Atrial function left. Medical search

The hemodynamic and electrophysiological action of the LEFT ATRIUM.

The hemodynamic and electrophysiological action of the HEART ATRIA.

The hemodynamic and electrophysiological action of the RIGHT ATRIUM.

The chambers of the heart, to which the BLOOD returns from the circulation.

Abnormal cardiac rhythm that is characterized by rapid, uncoordinated firing of electrical impulses in the upper chambers of the heart (HEART ATRIA). In such case, blood cannot be effectively pumped into the lower chambers of the heart (HEART VENTRICLES). It is caused by abnormal impulse generation.

Measurement of intracardiac blood flow using an M-mode and/or two-dimensional (2-D) echocardiogram while simultaneously recording the spectrum of the audible Doppler signal (e.g., velocity, direction, amplitude, intensity, timing) reflected from the moving column of red blood cells.

Echocardiography applying the Doppler effect, with velocity detection combined with range discrimination. Short bursts of ultrasound are transmitted at regular intervals and the echoes are demodulated as they return.

Surgical excision (total or partial) of a portion of the pericardium. Pericardiotomy refers to incision of the pericardium.

An electrical current applied to the HEART to terminate a disturbance of its rhythm, ARRHYTHMIAS, CARDIAC. (Stedman, 25th ed)

The hemodynamic and electrophysiological action of the left HEART VENTRICLE. Its measurement is an important aspect of the clinical evaluation of patients with heart disease to determine the effects of the disease on cardiac performance.

Contractile activity of the MYOCARDIUM.

Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic.

Examinations used to diagnose and treat heart conditions.

Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues using a transducer placed in the esophagus.

The hemodynamic and electrophysiological action of the HEART VENTRICLES.

The amount of BLOOD pumped out of the HEART per beat, not to be confused with cardiac output (volume/time). It is calculated as the difference between the end-diastolic volume and the end-systolic volume.

The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material).

A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.

The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.

A condition in which the LEFT VENTRICLE of the heart was functionally impaired. This condition usually leads to HEART FAILURE; MYOCARDIAL INFARCTION; and other cardiovascular complications. Diagnosis is made by measuring the diminished ejection fraction and a depressed level of motility of the left ventricular wall.

Enlargement of the LEFT VENTRICLE of the heart. This increase in ventricular mass is attributed to sustained abnormal pressure or volume loads and is a contributor to cardiovascular morbidity and mortality.

Effects of pacing-induced and balloon coronary occlusion ischemia on left atrial function in patients with coronary artery disease. (1/343)

OBJECTIVES: The aim of this study was to compare left atrial (LA) function in 16 patients with distal left anterior descending (LAD) and in 16 patients with proximal left circumflex (LCx) coronary artery stenosis at rest and immediately after pacing-induced tachycardia (LAD-pacing [P] and LCx-P) or coronary occlusion (LAD-CO and LCx-CO). BACKGROUND: During left ventricular (LV) ischemia, compensatory augmentation of LA contraction enhances LV filling and performance. The left atrium is supplied predominantly by branches arising from the LCx. Therefore, we hypothesized that one mechanism for the loss of atrial contraction may be ischemic LA dysfunction. METHODS: Left ventricular and LA pressure-area relations were derived from simultaneous double-tip micromanometer pressure recordings and automatic boundary detection echocardiograms. RESULTS: Immediately after pacing or after coronary occlusion, LV end-diastolic pressure, LV relaxation, LA mean pressure and LV stiffness significantly increased in all patients. However, the area of the A loop of the LA pressure-area relation, representing the LA pump function, significantly decreased in groups LCx-P and LCx-CO (from 14+/-3 to 9+/-2, and from 16+/-4 to 9+/-2 mm Hg.cm2, respectively, p < 0.05), whereas it increased in groups LAD-P and LAD-CO (from 12+/-3 to 54+/-10, and from 16+/-3 to 49+/-8 mm Hg.cm2, respectively, p < 0.001). CONCLUSIONS: In patients with LAD stenosis, LV supply or demand ischemia is associated with enhanced LA pump function. However, in patients with proximal LCx stenosis who develop the same type and degree of ischemia, LA branches might have been affected, rendering the LA ischemic and unable to increase its booster pump function. (+info)

Pulmonary venous flow in hypertrophic cardiomyopathy as assessed by the transoesophageal approach. The additive value of pulmonary venous flow and left atrial size variables in estimating the mitral inflow pattern in hypertrophic cardiomyopathy. (2/343)

AIMS: This study was conducted to assess the characteristics of the pattern of pulmonary venous flow and to document the interaction of this flow and left atrial function with the pattern of mitral inflow in hypertrophic cardiomyopathy. METHODS AND RESULTS: Pulmonary venous and mitral flows were evaluated by the transoesophageal approach in 80 patients with hypertrophic cardiomyopathy. Left atrial size and function were measured by the transthoracic approach. Their values were compared with those obtained from 35 normal controls. Twelve patients showed significant (> 2+) mitral regurgitation. As a group, hypertrophic cardiomyopathy patients showed increased atrial reversal flow and longer deceleration time of the diastolic wave, but a wide variability of pulmonary venous flow patterns were observed. Thirty patients (37.5%) had pseudonormal mitral flow patterns. Stepwise multilinear regression analysis identified the ratio of systolic to diastolic pulmonary venous flow velocity, the ratio of velocity-time integrals of both flow waves at atrial contraction, the left atrial minimal volume and the systolic fraction as independent predictive variables of the mitral E/A wave velocity ratio (r = 0.82). By logistic regression, the former three variables were selected as independent predictive covariates of a pseudonormal mitral flow pattern (sensitivity: 83%, specificity: 90%). The ratio of velocity-time integrals of both atrial waves was the most important predictive variable in both analyses. CONCLUSIONS: The observed variability in the configuration of pulmonary venous flow velocity waveform is related to what occurs in transmitral flow in patients with hypertrophic cardiomyopathy. Significant mitral regurgitation is not an independent correlate of pseudonormal mitral inflow patterns in these patients. Our results further emphasize the complementary, additive value of the pulmonary venous flow velocity pattern and left atrial size in the interpretation of the mitral flow velocity pattern, and indirectly suggest the underlying increased left ventricular filling pressures of patients with hypertrophic cardiomyopathy and pseudonormal mitral flow patterns. (+info)

Doppler sonographic evaluation of left atrial function after cardioversion of atrial fibrillation. (3/343)

Restoration of sinus rhythm is not always followed by immediate return of effective atrial contraction. Left atrial mechanical function can be assessed by Doppler echocardiography; in the present study we measured the atrial ejection force, which is a noninvasive Doppler-derived parameter that measures the strength of atrial contraction. The aim of the present study was to evaluate the influence of clinical and echocardiographic parameters: duration and cause of atrial fibrillation, different modality of cardioversion, and left atrial size with respect to the delay in the return of effective atrial contraction after cardioversion. Seventy patients were randomly chosen to undergo cardioversion by either direct current shock or intravenously administered procainamide hydrochloride. The 52 patients who had sinus rhythm restored underwent a complete Doppler echocardiographic examination 1 h after the restoration of sinus rhythm and after 1 day, 7 days, and 1 month. The relation between clinical variables and atrial ejection force was tested. Atrial ejection force was greater immediately and 24 h after cardioversion in patients who underwent pharmacologic therapy compared to patients treated with direct current shock (11.3+/-3 versus 5+/-2.9 dynes; P<0.001). In both groups atrial ejection force increased over time. The mode of cardioversion was significantly associated with recovery of left atrial mechanical function by day 1 in univariate and multivariate analysis (odds ratio, 0.14; 95% confidence interval, 0.02-1.2). The other variable associated with the delay in the recovery of atrial function was a dilated left atrium (odds ratio, 0.16; 95% confidence interval, 0.12-1.6). Atrial ejection force is a noninvasive parameter that can be easily measured after cardioversion and gives accurate information about the recovery of left atrial mechanical function. The recovery of left atrial function was influenced by the mode of cardioversion and left atrial size. (+info)

Importance of left atrial appendage flow as a predictor of thromboembolic events in patients with atrial fibrillation. (4/343)

AIM: The purpose of this study was to investigate the role of transoesophageal echocardiography in predicting subsequent thromboembolic events in patients with atrial fibrillation. METHODS AND PATIENTS: Transoesophageal echocardiography was performed in 88 patients with documented paroxysmal (n=53) or chronic atrial fibrillation (n=35) to assess morphological and functional predictors of thromboembolic events. Prospective selection was from patients with non-valvular atrial fibrillation who had undergone transoesophageal echocardiography because of previous thromboembolism (n=30); prior to electrical cardioversion (n=31); or for other reasons (n=27). All patients were followed up for 1 year. RESULTS: During the period of follow-up new thromboembolic events occurred in 18 of 88 patients (20%/year); 16 of these patients had a stroke and two a peripheral embolism. Univariate analysis revealed that previous thromboembolism (P<0.005; odds ratio 5.3 [CI 1.9, 12. 1]), history of hypertension (P<0.01; odds ratio 4.0 [CI 1.4, 10.4), presence of left atrial spontaneous echo contrast (P<0.025; odds ratio 3.5 [CI 1.2, 10.0]), and presence of left atrial appendage peak velocity +info)

Short-term effect of atrial fibrillation on atrial contractile function in humans. (5/343)

BACKGROUND: Conversion of chronic atrial fibrillation (AF) is associated with atrial stunning, but the short-term effect of a brief episode of AF on left atrial appendage (LAA) emptying velocity is unknown. The purpose of this study was to determine whether a short episode of AF affects left atrial function and whether verapamil modifies this effect. METHODS AND RESULTS: The subjects of this study were 19 patients without structural heart disease undergoing an electrophysiology procedure. In 13 patients, LAA emptying velocity was measured by transesophageal echocardiography in the setting of pharmacological autonomic blockade before, during, and after a short episode of AF. During sinus rhythm, the baseline LAA emptying velocity was measured 5 times and averaged. AF was then induced by rapid right atrial pacing. After either spontaneous or electrical conversion, LAA emptying velocity was measured immediately on resumption of sinus rhythm and every minute thereafter. The mean duration of AF was 15.3+/-3.8 minutes. The mean baseline emptying velocity was 70+/-20 cm/s. The first post-AF emptying velocity was 63+/-20 cm/s (P=0.02 versus baseline emptying velocity). The post-AF emptying velocity returned to the baseline emptying velocity value after 3.0 minutes. The mean percent reduction in post-AF emptying velocity was 9.7+/-21% (range, 15% increase to 56% decrease). A second group of 6 patients were pretreated with verapamil (0.1-mg/kg IV bolus followed by an infusion of 0.005 mg. kg-1. min-1). In these patients, the first post-AF emptying velocity, 58+/-14 cm/s, was not significantly different from the pre-AF emptying velocity, 60+/-13 cm/s (P=0.08). CONCLUSIONS: In humans, several minutes of AF may be sufficient to induce atrial contractile dysfunction after cardioversion. When atrial contractile dysfunction occurs, there is recovery of AF within several minutes. AF-induced contractile dysfunction is attenuated by verapamil and may be at least partially mediated by cellular calcium overload. (+info)

Left atrial relaxation and left ventricular systolic function determine left atrial reservoir function. (6/343)

BACKGROUND: Determinants of left atrial (LA) reservoir function and its influence on left ventricular (LV) function have not been quantified. METHODS AND RESULTS: In an open-pericardium, paced (70 and 90 bpm) pig model of LV regional ischemia (left anterior descending coronary constriction), with high-fidelity LV, LA, and RV pressure recordings, we obtained the LA area with 2D automated border detection echocardiography, LA pressure-area loops, and Doppler transmitral flow. We calculated LV tau, LA relaxation (a-x pressure difference divided by time, normalized by a pressure), and stiffness (slope between x and v pressure points of v loop). Determinants of total LA reservoir (maximum-minimum area, cm(2)) were identified by multiple regression analysis. Different mean rates of LA area increase identified 2 consecutive (early rapid and late slow) reservoir phases. During ischemia, LV long-axis shortening (LAS, LV base systolic descent) and LA reservoir area change decreased (7.3+/-0.3 [SEM] versus 5.6+/-0.3 cm(2), P<0.001) and LA stiffness increased (1.6+/-0.3 versus 3.1+/-0.3 mm Hg/cm(2), P=0.009). Early reservoir area change depended on LA mean ejection rate (LA area at ECG P wave minus minimum area divided by time; multiple regression coefficient=0.9; P<0.001) and relaxation (coefficient=4.9 cm(2)xms/s; P<0.001). Late reservoir area change depended on LAS (coefficient=8 cm/s; P<0.001). Total reservoir filling depended on LA stiffness (coefficient=-0.31 cm(4)/mm Hg; P=0. 001) and cardiac output (coefficient=0.001 cm(2)xmin/L; P=0.002). The strongest predictor of cardiac output was LA reservoir filling (coefficient=301 L/minxcm(2); P<0.001). The v loop area was determined by cardiac output, LV ejection time, tau, and early transmitral flow. CONCLUSIONS: Two (early and late) reservoir phases are determined by LA contraction and relaxation and LV base descent. Acute LV regional ischemia increases LA stiffness and impairs LA reservoir function by reducing LV base descent. (+info)

Noninvasive assessment of left atrial maximum dP/dt by a combination of transmitral and pulmonary venous flow. (7/343)

OBJECTIVES: The study assessed whether hemodynamic parameters of left atrial (LA) systolic function could be estimated noninvasively using Doppler echocardiography. BACKGROUND: Left atrial systolic function is an important aspect of cardiac function. Doppler echocardiography can measure changes in LA volume, but has not been shown to relate to hemodynamic parameters such as the maximal value of the first derivative of the pressure (LA dP/dt(max)). METHODS: Eighteen patients in sinus rhythm were studied immediately before and after open heart surgery using simultaneous LA pressure measurements and intraoperative transesophageal echocardiography. Left atrial pressure was measured with a micromanometer catheter, and LA dP/dt(max) during atrial contraction was obtained. Transmitral and pulmonary venous flow were recorded by pulsed Doppler echocardiography. Peak velocity, and mean acceleration and deceleration, and the time-velocity integral of each flow during atrial contraction was measured. The initial eight patients served as the study group to derive a multilinear regression equation to estimate LA dP/dt(max) from Doppler parameters, and the latter 10 patients served as the test group to validate the equation. A previously validated numeric model was used to confirm these results. RESULTS: In the study group, LA dP/dt(max) showed a linear relation with LA pressure before atrial contraction (r = 0.80, p < 0.005), confirming the presence of the Frank-Starling mechanism in the LA. Among transmitral flow parameters, mean acceleration showed the strongest correlation with LA dP/dt(max) (r = 0.78, p < 0.001). Among pulmonary venous flow parameters, no single parameter was sufficient to estimate LA dP/dt(max) with an r2 > 0.30. By stepwise and multiple linear regression analysis, LA dP/dt(max) was best described as follows: LA dP/dt(max) = 0.1 M-AC +/- 1.8 P-V - 4.1; r = 0.88, p < 0.0001, where M-AC is the mean acceleration of transmitral flow and P-V is the peak velocity of pulmonary venous flow during atrial contraction. This equation was tested in the latter 10 patients of the test group. Predicted and measured LA dP/dt(max) correlated well (r = 0.90, p < 0.0001). Numerical simulation verified that this relationship held across a wide range of atrial elastance, ventricular relaxation and systolic function, with LA dP/dt(max) predicted by the above equation with r = 0.94. CONCLUSIONS: A combination of transmitral and pulmonary venous flow parameters can provide a hemodynamic assessment of LA systolic function. (+info)

The pulmonary venous systolic flow pulse--its origin and relationship to left atrial pressure. (8/343)

OBJECTIVES: The purpose of this study was to determine the origin of the pulmonary venous systolic flow pulse using wave-intensity analysis to separate forward- and backward-going waves. BACKGROUND: The mechanism of the pulmonary venous systolic flow pulse is unclear and could be a "suction effect" due to a fall in atrial pressure (backward-going wave) or a "pushing effect" due to forward-propagation of right ventricular (RV) pressure (forward-going wave). METHODS: In eight patients during coronary surgery, pulmonary venous flow (flow probe), velocity (microsensor) and pressure (micromanometer) were recorded. We calculated wave intensity (dP x dU) as change in pulmonary venous pressure (dP) times change in velocity (dU) at 5 ms intervals. When dP x dU > 0 there is a net forward-going wave and when dP x dU < 0 there is a net backward-going wave. RESULTS: Systolic pulmonary venous flow was biphasic. When flow accelerated in early systole (S1), pulmonary venous pressure was falling, and, therefore, dP x dU was negative, -0.6 +/- 0.2 (x +/- SE) W/m2, indicating a net backward-going wave. When flow accelerated in late systole (S2), pressure was rising, and, therefore, dP x dU was positive, 0.3 +/- 0.1 W/m2, indicating a net forward-going wave. CONCLUSIONS: Pulmonary venous flow acceleration in S1 was attributed to a net backward-going wave secondary to a fall in atrial pressure. However, flow acceleration in S2 was attributed to a net forward-going wave, consistent with propagation of the RV systolic pressure pulse across the lungs. Pulmonary vein systolic flow pattern, therefore, appears to be determined by right- as well as left-sided cardiac events. (+info)

There are several risk factors for developing AF, including:

1. Age: The risk of developing AF increases with age, with the majority of cases occurring in people over the age of 65.
2. Hypertension (high blood pressure): High blood pressure can damage the heart and increase the risk of developing AF.
3. Heart disease: People with heart disease, such as coronary artery disease or heart failure, are at higher risk of developing AF.
4. Diabetes mellitus: Diabetes can increase the risk of developing AF.
5. Sleep apnea: Sleep apnea can increase the risk of developing AF.
6. Certain medications: Certain medications, such as thyroid medications and asthma medications, can increase the risk of developing AF.
7. Alcohol consumption: Excessive alcohol consumption has been linked to an increased risk of developing AF.
8. Smoking: Smoking is a risk factor for many cardiovascular conditions, including AF.
9. Obesity: Obesity is a risk factor for many cardiovascular conditions, including AF.

Symptoms of AF can include:

1. Palpitations (rapid or irregular heartbeat)
2. Shortness of breath
3. Fatigue
4. Dizziness or lightheadedness
5. Chest pain or discomfort

AF can be diagnosed with the help of several tests, including:

1. Electrocardiogram (ECG): This is a non-invasive test that measures the electrical activity of the heart.
2. Holter monitor: This is a portable device that records the heart's rhythm over a 24-hour period.
3. Event monitor: This is a portable device that records the heart's rhythm over a longer period of time, usually 1-2 weeks.
4. Echocardiogram: This is an imaging test that uses sound waves to create pictures of the heart.
5. Cardiac MRI: This is an imaging test that uses magnetic fields and radio waves to create detailed pictures of the heart.

Treatment for AF depends on the underlying cause and may include medications, such as:

1. Beta blockers: These medications slow the heart rate and reduce the force of the heart's contractions.
2. Antiarrhythmics: These medications help regulate the heart's rhythm.
3. Blood thinners: These medications prevent blood clots from forming and can help reduce the risk of stroke.
4. Calcium channel blockers: These medications slow the entry of calcium into the heart muscle cells, which can help slow the heart rate and reduce the force of the heart's contractions.

In some cases, catheter ablation may be recommended to destroy the abnormal electrical pathway causing AF. This is a minimally invasive procedure that involves inserting a catheter through a vein in the leg and guiding it to the heart using x-ray imaging. Once the catheter is in place, energy is applied to the abnormal electrical pathway to destroy it and restore a normal heart rhythm.

It's important to note that AF can increase the risk of stroke, so anticoagulation therapy may be recommended to reduce this risk. This can include medications such as warfarin or aspirin, or in some cases, implantable devices such as a left atrial appendage closure device.

In conclusion, atrial fibrillation is a common heart rhythm disorder that can increase the risk of stroke and heart failure. Treatment options depend on the underlying cause and may include medications, cardioversion, catheter ablation, or anticoagulation therapy. It's important to work closely with a healthcare provider to determine the best course of treatment for AF.

There are several potential causes of LVD, including:

1. Coronary artery disease: The buildup of plaque in the coronary arteries can lead to a heart attack, which can damage the left ventricle and impair its ability to function properly.
2. Heart failure: When the heart is unable to pump enough blood to meet the body's needs, it can lead to LVD.
3. Cardiomyopathy: This is a condition where the heart muscle becomes weakened or enlarged, leading to impaired function of the left ventricle.
4. Heart valve disease: Problems with the heart valves can disrupt the normal flow of blood and cause LVD.
5. Hypertension: High blood pressure can cause damage to the heart muscle and lead to LVD.
6. Genetic factors: Some people may be born with genetic mutations that predispose them to developing LVD.
7. Viral infections: Certain viral infections, such as myocarditis, can inflame and damage the heart muscle, leading to LVD.
8. Alcohol or drug abuse: Substance abuse can damage the heart muscle and lead to LVD.
9. Nutritional deficiencies: A diet lacking essential nutrients can lead to damage to the heart muscle and increase the risk of LVD.

Diagnosis of LVD typically involves a physical exam, medical history, and results of diagnostic tests such as electrocardiograms (ECGs), echocardiograms, and stress tests. Treatment options for LVD depend on the underlying cause, but may include medications to improve cardiac function, lifestyle changes, and in severe cases, surgery or other procedures.

Preventing LVD involves taking steps to maintain a healthy heart and reducing risk factors such as high blood pressure, smoking, and obesity. This can be achieved through a balanced diet, regular exercise, stress management, and avoiding substance abuse. Early detection and treatment of underlying conditions that increase the risk of LVD can also help prevent the condition from developing.

LVH can lead to a number of complications, including:

1. Heart failure: The enlarged left ventricle can become less efficient at pumping blood throughout the body, leading to heart failure.
2. Arrhythmias: The abnormal electrical activity in the heart can lead to irregular heart rhythms.
3. Sudden cardiac death: In some cases, LVH can increase the risk of sudden cardiac death.
4. Atrial fibrillation: The enlarged left atrium can lead to atrial fibrillation, a common type of arrhythmia.
5. Mitral regurgitation: The enlargement of the left ventricle can cause the mitral valve to become incompetent, leading to mitral regurgitation.
6. Heart valve problems: The enlarged left ventricle can lead to heart valve problems, such as mitral regurgitation or aortic stenosis.
7. Coronary artery disease: LVH can increase the risk of coronary artery disease, which can lead to a heart attack.
8. Pulmonary hypertension: The enlarged left ventricle can lead to pulmonary hypertension, which can further strain the heart and increase the risk of complications.

Evaluation of LVH typically involves a physical examination, medical history, electrocardiogram (ECG), echocardiography, and other diagnostic tests such as stress test or cardiac MRI. Treatment options for LVH depend on the underlying cause and may include medications, lifestyle changes, and in some cases, surgery or other interventions.

Theodorakis GN, Panou F, Markianos M, Fragakis N, Livanis EG, Kremastinos DT (February 1997). "Left atrial function and atrial ... That's due to increase in left atrial pressure and left ventricular filling pressure, which is due to decreased cardiac output ... and decreased left atrial total emptying fraction associated with ventricular pacing. The loss of physiologic timing of atrial ... Ventricular pacing is associated with elevated right and left atrial pressures, as well as elevated pulmonary venous and ...

https://en.wikipedia.org/wiki/Pacemaker_syndrome

Normal atrial function is essential for embryogenesis, as inactivation of the MYL7 gene was embryonic lethal at ED10.5-11.5. ... Importantly, overexpression of ALC-1 was shown to attenuate heart failure in pressure-overloaded animals, by enhancing left ... Huang C, Sheikh F, Hollander M, Cai C, Becker D, Chu PH, Evans S, Chen J (December 2003). "Embryonic atrial function is ... Atrial Light Chain-1 (ALC-1), also known as Essential Light Chain, Atrial is a protein that in humans is encoded by the MYL4 ...

https://en.wikipedia.org/wiki/MYL4

... is a function of atrial contraction. The ratio between e' and a' is also a measure of diastolic function, in addition to the ... is a measure of left ventricular diastolic function, and has been shown to be relatively independent of left ventricular ... Before the advent of tissue Doppler, systolic function was usually assessed with ejection fraction (EF), and diastolic function ... this pressure difference is both a function of the pressure drop during early relaxation and the initial atrial pressure. In ...

https://en.wikipedia.org/wiki/Tissue_Doppler_echocardiography

... left and right atrial size (which predicts the likelihood that AF may become permanent), left ventricular size and function, ... Diastolic dysfunction is also associated with AF, which increases left atrial pressure, left atrial volume, size, and left ... the lack of an organized atrial contraction can result in some stagnant blood in the left atrium (LA) or left atrial appendage ... Al-Saady, N. M.; O. A. Abel; A. J. Camm (1999). "Left atrial appendage: structure, function, and role in thromboembolism". ...

https://en.wikipedia.org/wiki/Atrial_fibrillation

The AV node connects the atrial and ventricular chambers. It functions to carry the electrical impulse from the atria to the ... While the left abdominal air sac is large and lies to the left of the mesentery. The connection from the main mesobronchi to ... The ureters leave the ventral caudomedial surface and continue caudally, near the midline into the opening of the urodeum of ... For example, they use their wings to cover the naked skin of the upper legs and flanks to conserve heat, or leave these areas ...

https://en.wikipedia.org/wiki/Common_ostrich

... atrial function MeSH G09.330.582.075.100 - atrial function, left MeSH G09.330.582.075.200 - atrial function, right MeSH G09.330 ... ventricular function MeSH G09.330.582.962.800 - ventricular function, left MeSH G09.330.582.962.900 - ventricular function, ...

https://en.wikipedia.org/wiki/List_of_MeSH_codes_(G09)

Effects of balloon mitral valvuloplasty on left atrial function in mitral stenosis as assessed by pressure-area relation. J Am ... Assessment of left atrial pressure-area relation in humans by means of retrograde left atrial catheterization and ... He subsequently made studies on the elastic properties of aorta and the function of left atrium. A large part of his research ... Aortic function in arterial hypertension determined by pressure-diameter relation: Effects of diltiazem. Circulation. 1997 Sep ...

https://en.wikipedia.org/wiki/Christodoulos_I._Stefanadis

The main function of ANP is causing a reduction in expanded extracellular fluid (ECF) volume by increasing renal sodium ... ANP-deficient mice were found to have a large increase in heart and left ventricular weight in response to volume overload, ... Atrial natriuretic peptide (ANP) or atrial natriuretic factor (ANF) is a natriuretic peptide hormone secreted from the cardiac ... These cells contain volume receptors which respond to increased stretching of the atrial wall due to increased atrial blood ...

https://en.wikipedia.org/wiki/Atrial_natriuretic_peptide

RAI = right atrial area / left atrial area. These measurements are made from the apical four chamber view.[citation needed] ... developed several Doppler echocardiographic numeric parameters over the last two decades to assess cardiac diastolic function. ... 2011; 124: A11559 Right atrial to left atrial area ratio on early echocardiography predicts long-term survival after acute ... from the standard transthoracic Doppler echocardiogram measurements of the right atrial area divided by the left atrial area. ...

https://en.wikipedia.org/wiki/Relative_Atrial_Index

Parallel to "diastolic function", the term "systolic function" is usually referenced in terms of the left ventricular ejection ... diastolic intervals consist of early rapid filling E-waves followed by diastasis and followed by atrial systole-generated A- ... The most established index to describe left ventricular diastolic function is Tau, left ventricular diastolic time constant. ... To better understand diastolic function, it is crucial to realize that the left ventricle is a mechanical suction pump at, and ...

https://en.wikipedia.org/wiki/Diastolic_function

Elevated right atrial pressure (>12mmHg), Moderate pulmonary hypertension, Normal systolic function, Poor diastolic function, ... cite journal}}: Cite journal requires ,journal= (help) Pollak, A; Falk, R H (1993-08-01). "Left ventricular systolic ... Vasodilators are also typically ineffective because systolic function is usually preserved in cases of RCM. Heart failure ... Patients will demonstrate normal systolic function, diastolic dysfunction, and a restrictive filling pattern. 2-dimensional and ...

https://en.wikipedia.org/wiki/Restrictive_cardiomyopathy

"Atrial Size and Function in Athletes". International Journal of Sports Medicine. 36 (14): 1170-1176. doi:10.1055/s-0035-1555780 ... Mitral regurgitation: the backflow of blood from the left ventricle into the left atrium, owing to insufficiency of the mitral ... Also left atrium diameter was larger in athletes with mitral regurgitation. Stenosis Valvular heart disease Arsalan, Mani; ... Regurgitant fraction is the percentage of blood that regurgitates back through the aortic valve to the left ventricle due to ...

https://en.wikipedia.org/wiki/Regurgitation_(circulation)

"Thyroid function abnormalities during amiodarone therapy for persistent atrial fibrillation". The American Journal of Medicine ... O'Sullivan, Anthony J.; Lewis, Mridula; Diamond, Terrance (April 2006). "Amiodarone-induced thyrotoxicosis: left ventricular ...

https://en.wikipedia.org/wiki/Amiodarone_induced_thyrotoxicosis

Mutations in MYH10 have been identified in patients with left atrial enlargement. NM-IIB is 228.9 kDa protein composed of 1976 ... Various functions of NM-IIB require the phosphorylation of the regulatory light chain MLC20, including cell migration and cell ... Single nucleotide polymorphisms in MYH10 were detected in patients with left atrial enlargement. MYH10 was identified to be a ... Insights into the function of NM-IIB specifically have come from studies employing transgenic animals. NM-IIB is clearly ...

https://en.wikipedia.org/wiki/MYH10

Left atrial flutter is considered atypical and is common after incomplete left atrial ablation procedures. Atypical atrial ... Prolonged atrial flutter with fast heart rates may lead to decompensation with loss of normal heart function (heart failure). ... A blood clot in the left atrial appendage is particularly important as the left side of the heart supplies blood to the entire ... Similar to the abnormal heart rhythm atrial fibrillation, atrial flutter also leads to poor contraction of the atrial chambers ...

https://en.wikipedia.org/wiki/Atrial_flutter

Less common findings include left ventricular hypertrophy, premature atrial and ventricular contractions, atrial fibrillation, ... It can alter cardiac function, with increased heart rate, increased left ventricular mass index, increased cardiac ... Studies of thyroid function and immune parameters in patients with hyperthyroid Graves' disease in remission. Murakami M, ... January 2009). "Thyroid function abnormalities and cognitive impairment in elderly people: results of the Invecchiare in ...

https://en.wikipedia.org/wiki/Signs_and_symptoms_of_Graves'_disease

Often, reverse remodeling, or improvement in left ventricular function, will also be seen.[citation needed] Anatomy portal Dor ... However, atrial natriuretic peptide is thought to be cardio-protective. Remodeling of the heart is evaluated by performing an ... Ventricular mass and volume increase, which together adversely affect cardiac function. Eventually, diastolic function, or the ... "Sustained Reverse Left Ventricular Structural Remodeling With Cardiac Resynchronization at One Year Is a Function of Etiology ...

https://en.wikipedia.org/wiki/Ventricular_remodeling

Mild left atrial enlargement: the test will help to determine if the left atrium is enlarged due to alternate blood flows Right ... and functioning of left ventricle. The ECG can also be used to determine the rhythm of the heart to determine if there is an ... This is caused by blood flowing from left atrium to the right atrium causing a higher left atrial pressure and leading to ... pulmonary vascular congestion, marked left atrial enlargement: the test will help to determine if there is a sign of MS and ...

https://en.wikipedia.org/wiki/Lutembacher's_syndrome

... rapid atrial and ventricular pacing, and left bundle branch block. The types of SVT associated with TIC include atrial ... Studies show that left ventricular function often improves within 1 month of treatment of the tachyarrhythmia, and ... Previously normal left ventricular ejection fraction or left ventricular systolic dysfunction out of proportion to a patient's ... In addition to decreased left ventricular ejection fraction, studies indicate that patients with TIC may have a smaller left ...

https://en.wikipedia.org/wiki/Tachycardia-induced_cardiomyopathy

Long-term therapy with pilsicainide is successful in treating chronic atrial fibrillation). It functions by blocking the fast ... of pilsicainide effectively restores normal sinus rhythm in patients with recent-onset atrial fibrillation and a healthy left ... It is especially effective in the treatment of atrial fibrillation. Atrial fibrillation is the most common type of arrhythmia. ... "Determination of refractory periods and conduction velocity during atrial fibrillation using atrial capture in dogs: direct ...

https://en.wikipedia.org/wiki/Pilsicainide

This appears to "function as a decompression chamber during left ventricular systole and during other periods when left atrial ... The body of the left atrial appendage is anterior to the left atrium and parallel to the left pulmonary veins. The left ... The case of a disappearing left atrial appendage thrombus: direct visualization of left atrial thrombus migration, captured by ... 1999). "Left atrial appendage: structure, function, and role in thromboembolism: Review". Heart. 82 (5): 547-554. doi:10.1136/ ...

https://en.wikipedia.org/wiki/Atrium_(heart)

Diastole ends with atrial contraction, which ejects the final 30% of blood that is transferred from the left atrium to the left ... During diastole, a normally-functioning mitral valve opens as a result of increased pressure from the left atrium as it fills ... It is on the left side of the heart and allows the blood to flow from the left atrium into the left ventricle. ... The pulmonary valve has left, right, and anterior cusps. The aortic valve has left, right, and posterior cusps. The tricuspid ...

https://en.wikipedia.org/wiki/Heart_valve

... early-to-atrial left ventricular filling ratio), the E (early left ventricular filling) deceleration time, and the isovolumic ... Left ventricular diastolic function can be determined through echocardiography by measurement of various parameters such as the ... In systolic dysfunction, the ejection fraction is decreased, leaving an abnormally elevated volume of blood in the left ... In left-sided heart failure edema can occur in the lungs - this is called cardiogenic pulmonary edema. This reduces spare ...

https://en.wikipedia.org/wiki/Pathophysiology_of_heart_failure

Impaired left ventricular forward function can lead to symptoms of poor systemic perfusion such as dizziness, confusion, and ... It is now used in only a small number of people with refractory symptoms, who are in atrial fibrillation, and/or who have ... Reverse insufficiency can be divided into the failure of the left atrium, the left ventricle, or both within the left circuit. ... Left-sided heart failure is the more common. The left side of the heart takes oxygen-rich blood from the lungs and pumps it to ...

https://en.wikipedia.org/wiki/Heart_failure

In the left atrium, the junction is at the pulmonary veins. Low pressure baroreceptors are involved in regulation of the blood ... Type B receptors are activated by wall stretch, which develops by atrial filling during ventricular systole. In the right ... 2022, https://www.ncbi.nlm.nih.gov/books/NBK538172/. Linden, R. J. (September 1973). "Function of Cardiac Receptors". ... Type A receptors are activated by wall tension, which develops by atrial contraction during ventricular diastole. ...

https://en.wikipedia.org/wiki/Low_pressure_receptors

... in particular using TEE during procedures such as insertion of a left atrial appendage occlusion device. Cardiac MRI utilizes ... of function. The heart is a muscle that squeezes blood and functions like a pump. The heart's systems can be classified as ... Atrial fibrillation and atrial flutter resulted in 112,000 deaths in 2013, up from 29,000 in 1990. Sudden cardiac death is the ... Supraventricular tachycardias include atrial fibrillation, atrial flutter, and paroxysmal supraventricular tachycardia. ...

https://en.wikipedia.org/wiki/Cardiology

... preservation of systolic function, and/or rate control for atrial fibrillation with a rapid ventricular response. Heart Failure ... Other species of Lepidoptera eat the leaves, including the lesser yellow underwing. Digitalis is an example of a drug derived ... atrial fibrillation. Digitalis is hence often prescribed for patients in atrial fibrillation, especially if they have been ... and increasing with impaired kidney function), whereas digitoxin's is about 7 days and not affected by kidney function. Both ...

https://en.wikipedia.org/wiki/Digitalis

Thus, the timing between the atrial and ventricular contractions, as well as between the septal and lateral walls of the left ... can have negative effects on heart function. It has been associated with increased risk of atrial fibrillation, heart failure, ... as in atrial fibrillation. The equivalent atrial pacing mode is AAI or AAIR which is the mode of choice when atrioventricular ... where a supraventricular tachycardia such as atrial fibrillation or atrial flutter is tracked by the pacemaker and produces ...

https://en.wikipedia.org/wiki/Artificial_cardiac_pacemaker

These patients will have left atrial enlargement, and many will have a reduced left ventricular ejection fraction that ... Yip G, Wang M, Zhang Y, Fung JW, Ho PY, Sanderson JE (February 2002). "Left ventricular long axis function in diastolic heart ... and many have left atrial enlargement due to the elevated pressures in the left heart. Grade III and IV diastolic dysfunction ... Left atrial and pulmonary venous pressure increases in HFpEF due to diastolic insufficiency thus increasing pulmonary artery ...

https://en.wikipedia.org/wiki/Heart_failure_with_preserved_ejection_fraction

... balloon pumping to stabilize patients with cardiogenic shock Ventricular assist device to aid in the function of the left ... Temporary cardiac pacing catheters for atrial, ventricular, or dual-chamber pacing Intra-aortic ... These can include tests to evaluate blood flow and gas exchange in the body, or to assess the function of organs such as the ... cardiography to monitor fluid status and heart function Ultrasound to evaluate internal structures including the heart, lungs, ...

https://en.wikipedia.org/wiki/Intensive_care_medicine

One individual was reported to have been born with a skin tag on the left cheek. Four affected individuals who did not survive ... Two individuals who did not survive to term had a patent foramen ovale, a specific type of atrial septal defect, as well as ... suggesting the severity may depend on the presence of mutations in other genes that perform similar functions to or otherwise ... A minority of those affected have been born with an atrial septal defect, a type of congenital heart defect. One affected ...

https://en.wikipedia.org/wiki/Strømme_syndrome

31 Depressed ventricular function Unstable angina Stenosis of the left main stem Triple vessel disease WiLLiaM MaRRoW:p. 31 W ... 32 Atrial contraction Systole (ventricular contraction) Klosure (closure) of tricuspid valve, so atrial filling Maximal atrial ... 1 Aortic arch gives rise to: Brachiocephalic trunk Left Common Carotid Left Subclavian Toilet Paper My Ass, or They Pay Me ... Sternal depression LEft sided murmurs louder with Expiration RIght sided murmurs louder with Inspiration.p. 32 SCRIPT:p. 32 ...

https://en.wikipedia.org/wiki/List_of_cardiology_mnemonics

The Effects of Caloric Restriction- and Exercise-Induced Weight Loss on Left Ventricular Diastolic Function. American Journal ... Manson McGuire A, Hagley MT, Hall AF, Kovács SJ, Jr.: Relationship of the fourth heart sound to atrial systolic transmitral ... In addition, kinematic characterization of diastolic function has advanced understanding of form and function via the ... load-independent index of diastolic function' (LIIDF) problem, and to the realization that left ventricular volume at diastasis ...

https://en.wikipedia.org/wiki/Sándor_J._Kovács

The structure and function of the epithelial cells lining the lumen change during the course of the nephron, and have segments ... The glomerular filtrate leaves the Bowman's capsule at the renal tubule at the urinary pole. The glomerulus is the network ... Atrial natriuretic peptide causes the distal convoluted tubule to secrete more sodium. A part of Distal nephron. This is the ... As much as three-quarters of the water from urine can be reabsorbed as it leaves the collecting duct by osmosis. Thus the ...

https://en.wikipedia.org/wiki/Nephron

... defect Atrial septal defect Cor triatriatum Dextro-Transposition of the great arteries Double aortic arch Double inlet left ... The Unity of form and Function (3rd ed.). Mc Graw-Hill. p. 680. ISBN 0-07-242903-8. Olshansky, Brian; Sandesara, C; Quick, A; ... Atrial fibrillation Atrial fibrillation with rapid ventricular response Atrial flutter Atrial tachycardia Bifascicular block ... Lange-Nielsen syndrome Junctional escape beat Junctional rhythm Left bundle branch block Left anterior fascicular block Left ...

https://en.wikipedia.org/wiki/List_of_circulatory_system_conditions

... as a result of the inability of the left heart to pump enough blood to sustain normal organ function. In fetal life, this is ... A balloon atrial septostomy is also done. This ensures that there is enough of a connection between the two atria of the heart ... Fetal aortic stenosis impairs left ventricular development, which can lead to hypoplastic left heart syndrome. If untreated, ... If the fetal aortic stenosis is critical it may lead to hypoplastic left heart syndrome. Hypoplastic Left Heart Syndrome (HLHS ...

https://en.wikipedia.org/wiki/Fetal_aortic_stenosis

For example, a left-to-right atrial septal defect will show a marked increase in oxygen saturation in the right atrium, ... along with pulmonary function testing and other testing should be done to confirm pulmonary hypertension prior to having ... Typically, these devices are placed in the left upper chest and enter the left subclavian vein and electrodes are placed in the ... Angioplasty balloons Atherectomy lasers and rotational devices Left atrial appendage occlusion devices Electrophysiology:[ ...

https://en.wikipedia.org/wiki/Cardiac_catheterization

Birla S, Aggarwal S, Sharma A, Tandon N (2014). "Rare association of acromegaly with left atrial myxoma in Carney's complex due ... Carney complex is most commonly caused by mutations in the PRKAR1A gene on chromosome 17 (17q23-q24) which may function as a ... atrial myxomas, and blue nevi. NAME refers to nevi, atrial myxoma, myxoid neurofibromas, and ephelides. Testicular cancer, ...

https://en.wikipedia.org/wiki/Carney_complex

In 1982, he was first admitted to a hospital for Atrial Fibrillation, and presented symptoms of left/ right confusion, nominal ... According to this theory, if an area of the brain is damaged, the function that the area is responsible for may decline as well ... After further examination, it was discovered that ELM had a Cortical Lesion in his left hemisphere in the temporal lobe. ELM ... For example, patient JB suffered extensive damage to the parietal-occipital areas to the left cerebral hemisphere leading to ...

https://en.wikipedia.org/wiki/Apperceptive_agnosia

... and travels inferiorly separating the left atrium and left ventricle. The location of the left coronary sulcus is marked by the ... The right coronary sulcus separates the right atrium and its atrial appendage from the right ventricle inferiorly. The right ... Function and Metabolism", in Caballero, Benjamin (ed.), Encyclopedia of Human Nutrition (Third Edition), Waltham: Academic ... There are two coronary sulci in the heart, including left and right coronary sulci. The left coronary sulcus originates ...

https://en.wikipedia.org/wiki/Coronary_sulcus

The flow rates were for each frame, from left to right: 0, 100, 200, 300 and 400 ml per second. The opening of the cusps of ... In view of these changes in those valves, how did some of the porcine and pericardial valves continue to function well beyond ... The so-called 'risk factors' for embolisation, with the exception of atrial fibrillation, can be called, at best, 'scientific ... In summary, the excellent haemodynamic function of the pericardial valve is one of its great advantages and sets it aside from ...

https://en.wikipedia.org/wiki/Pericardial_heart_valves

2005). "Left Atrial Appendage Occlusion Study (LAAOS): results of a randomized controlled pilot study of left atrial appendage ... Abnormal Renal/Liver Function, Stroke, Bleeding History or Predisposition, Labile INR, Elderly, Drugs/Alcohol Concomitantly) ... 2003). "Left Atrial Appendage Occlusion Study (LAAOS): a randomized clinical trial of left atrial appendage occlusion during ... 2006). "The PROTECT AF (WATCHMAN Left Atrial Appendage System for Embolic PROTECTion in Patients with Atrial Fibrillation) ...

https://en.wikipedia.org/wiki/Management_of_atrial_fibrillation

An ectopic pacemaker located in the atria is known as an atrial pacemaker and can cause the atrial contraction to be faster. An ... 2007). "Tbx3 controls the sinoatrial node gene program and imposes pacemaker function on the atria". Genes & Development. 21 (9 ... which can cause the rate of impulse to slow SA node blockage so that impulses never leave the atria AV node blockage (3rd ... "Disturbances in Atrial Rhythm and Conduction Following the Surgical Creation of an Atrial Septal Defect by the Blalock-Hanlon ...

https://en.wikipedia.org/wiki/Ectopic_pacemaker

The left and right bundle branches, and the Purkinje fibers, will also produce a spontaneous action potential at a rate of 30- ... If the SA node does not function, or the impulse generated in the SA node is blocked before it travels down the electrical ... within the atrial septum. If the AV node also fails, Purkinje fibers are occasionally capable of acting as the default or " ... By doing so, the artificial pacemaker takes over from the primary SA node pacemaker to regulate the function of the heart's ...

https://en.wikipedia.org/wiki/Cardiac_pacemaker

If left undisturbed, microbial plaque calcifies to form calculus, which is commonly called tartar. Calculus above and below the ... Harada, Masahide; Van Wagoner, David R.; Nattel, Stanley (2015). "Role of Inflammation in Atrial Fibrillation Pathophysiology ... immune functioning, neutrophil activity, and cytokine biology. As dental plaque or biofilm accumulates on the teeth near and ... which leaves behind a smooth and glassy surface, which is not a requisite for periodontal healing. Therefore, RSI is now ...

https://en.wikipedia.org/wiki/Periodontal_disease

In Turner syndrome, there is a lower incidence of developmental delays, left-sided heart defects are constant and the ... January 2007). "Germline gain-of-function mutations in SOS1 cause Noonan syndrome". Nature Genetics. 39 (1): 70-4. doi:10.1038/ ... This includes pulmonary valvular stenosis (50-60%), atrial septal defects (10-25%), ventricular septal defects (5-20%) and ... Accommodations for lessening handwriting demands will improve performance and save long-term hand function. Periodic follow up ...

https://en.wikipedia.org/wiki/Noonan_syndrome

... there will be bulge of the left atrial appendage. On CT and MRI scans, similar findings as chest X-ray can be shown. The left ... Both of these layers function in lubricating the heart to prevent friction during heart activity. The visceral serous ... The left phrenic nerve passes over the pericardium of the left ventricle. Pericardial arteries supply blood to the dorsal ... When it happens, it is usually occurs on the left side. Those affected usually do not have any symptoms and they are usually ...

https://en.wikipedia.org/wiki/Pericardium

Asymptomatic atrial septal defects; In the heart the right ventricular (RV) can have a volume overload which ultimately ... Cytochrome b plays a major part in the correct fabrication and function of complex III.[citation needed] This mutation occurred ... Hypertrophic cardiomyopathy or cardiomyopathy from recent myocarditis Active or suspected myocarditis or pericarditis Low left- ... The exercise intolerance is associated with reduced pulmonary function that is the origin of CF. Bronchiectasis Post-exertional ...

https://en.wikipedia.org/wiki/Exercise_intolerance

... executive functioning, motor functioning, attention and hyperactive problems, social skills, sensory processing disorder, ... Ventricular septal defect, atrial septal defect, tetralogy of Fallot, coarctation of the aorta, and/or cardiac rhythm ... leptomeningeal heterotopia covering the left hemisphere. In 1977, Dr. Clarren described a second infant whose mother was a ... Fetal tissues are quite different from adult tissues in function and purpose. For example, the main detoxicating organ in ...

https://en.wikipedia.org/wiki/Fetal_alcohol_spectrum_disorder

Experiments in chick embryos found an association between ACTC1 knockdown and a reduction in the atrial septa. Polymorphisms in ... The E101K missense mutation has been associated with Hypertrophic Cardiomyopathy and Left Ventricular Noncompaction. Another ... which are responsible for muscle contraction and generation of force to support the pump function of the heart. Cardiac alpha ... left ventricular non-compaction, and septal defects". European Heart Journal. 28 (16): 1953-61. doi:10.1093/eurheartj/ehm239. ...

https://en.wikipedia.org/wiki/ACTC1

KCNA5 Atrial septal defect 4; 611363; TBX20 Atrial septal defect 5; 612794; ACTC1 Atrial septal defect 6; 613087; TLL1 Atrial ... LDB3 Left ventricular noncompaction 4; 613424; ACTC1 Left ventricular noncompaction 5; 613426; MYH7 Left ventricular ... rate of decline of lung function in; 606963; MMP1 Coproporphyria; 121300; CPOX Cornea plana congenita, recessive; 217300; KERA ... TF Atrial fibrillation; 608583; GJA5 Atrial fibrillation, familial, 3; 607554; KCNQ1 Atrial fibrillation, familial, 4; 611493; ...

https://en.wikipedia.org/wiki/List_of_OMIM_disorder_codes

The majority of studies of KCNE4 function, structure-function relationships and effects of pathological gene sequence variants ... Ma KJ, Li N, Teng SY, Zhang YH, Sun Q, Gu DF, Pu JL (January 2007). "Modulation of KCNQ1 current by atrial fibrillation- ... KCNE4 strongly inhibits Kv1.1 and Kv1.3 channels when co-expressed in HEK cells and in Xenopus laevis oocytes, while leaving ... KCNE4 often, but not always, acts as an inhibitory subunit to suppress potassium channel function, but this varies depending on ...

https://en.wikipedia.org/wiki/KCNE4

In the new world, there is a big tree that bears leaves in the form of a heart, and lacks fruit. It has two barks, one [is] ... In people with atrial fibrillation, conduction defects, or heart block, quinine can cause heart arrhythmias, and should be ... Ring opening in the indole heterocyclic ring could generate new amine and keto functions. The new quinoline heterocycle would ... it is said that it bears leaves in the form of a heart, and that it bears no fruit. This tree has a thick bark, very solid and ...

https://en.wikipedia.org/wiki/Quinine

Renal artery stenosis (RAS) may be associated with a localized abdominal bruit to the left or right of the midline (unilateral ... An exception to this is those with very high blood pressure readings especially when there is poor organ function. With the ... Long-term high blood pressure, however, is a major risk factor for stroke, coronary artery disease, heart failure, atrial ... It may also show whether there is thickening of the heart muscle (left ventricular hypertrophy) or whether the heart has ...

https://en.wikipedia.org/wiki/Hypertension

Left untreated, ventricular fibrillation is rapidly fatal as the vital organs of the body, including the heart, are starved of ... Atrial fibrillation Electric shock Flatline HMR 1883 Osborn wave Re-entry ventricular arrhythmia Ventricular flutter Baldzizhar ... including analysis of heart rate variability and assessment of cardiac function, as well as in imaging and acoustics. Myofibre ... a term that he seems to have used to describe both atrial and ventricular fibrillation. John A. MacWilliam, a physiologist who ...

https://en.wikipedia.org/wiki/Ventricular_fibrillation

Pre-operative severe left ventricular hypertrophy is a contributing factor to morbidity. The risk of dying as a result of ... can be used to verify that the new valve is functioning properly. Pacing wires are usually put in place, so that the heart can ... aortic cannulation by a cannula placed on the aorta and a venous canulation by a single atrial venous cannula inserted through ... Some surgeons also opt to place a vent in the left ventricle through the right superior pulmonary vein, because this helps to ...

https://en.wikipedia.org/wiki/Aortic_valve_replacement

The left and right ventricles (lower chambers of the heart) do not fill properly due to the irregular contraction of the left ... Atrial fibrillation is a type of arrhythmia characterized by rapid and irregular heart rhythms due to irregular atrial ... loss of reflexes or proper bodily functions, and many others. Diabetic nephropathy. Excessive amounts of certain solutes ... Atrial fibrillation is associated with an increase in risk of having a stroke especially if the embolus travels to the brain. ...

https://en.wikipedia.org/wiki/Complication_(medicine)

... but no significant effect on left-ventricular end-diastolic diameter, left atrial diameter, systolic blood pressure, or ... and increased left ventricular function and arterial flexibility. There are several problems with linking this evidence to ... increased heart rate and increased left ventricular function there are several problems with linking this evidence to alleged ... Sweating removes an insignificant amount of toxins from your body and can be counter productive to the function of the body's ...

https://en.wikipedia.org/wiki/Infrared_sauna

After 20 months in service, he left active duty at the rank of captain. Following his military service, he did a year of work ... A stake's high priest quorum now consists of current members of stake presidencies, high councils, bishoprics and functioning ... on an adult with an atrial septal defect. Nelson was also the director of the University of Utah thoracic surgery residency ...

https://en.wikipedia.org/wiki/Russell_M._Nelson

Association of left atrial structure and function and incident cardiovascular disease in patients with diabetes mellitus: ... Association of left atrial structure and function and incident cardiovascular disease in patients with diabetes mellitus: ... Clot Lysis Time Predicts Stroke During Anticoagulant Therapy in Patients with Atrial Fibrillation. Canadian Journal of ... Our findings demonstrate that in atrial fbrillation patients treated with vitamin K antagonists, impaired fibrinolysis ...

https://www.growkudos.com/publications/10.1093%252Fehjci%252Fjew332/reader

Quantitative left atrial function allows optimized prediction of cardiovascular events following myocardial infarction: a ... The association of left ventricular sphericity with left ventricular volumes and function and myocardial scar: The ALLSTAR ... Association between different cardiac MRI parameters with electro-anatomical substrate and NT-proANP levels in atrial ...

https://esc365.escardio.org/presentation/177426

Left-atrial volume reduction reflects improvement of cardiac sympathetic nervous function in patients with severe aortic ... Cardiac sympathetic nervous (CSN) function and left atrial (LA) volume are both important prognostic factors in patients with ... CSN function was assessed by performing 123I-metaiodobenzylguanidine (MIBG) scintigraphy before and 6 months after TAVR, and ... This retrospective observational study aimed to assess the correlation between CSN function and LA volume in 48 symptomatic ...

https://pesquisa.bvsalud.org/saudepublica/resource/pt/mdl-36928668

Contribution of sarcomere gene mutations to left atrial function in patients with hypertrophic cardiomyopathy *Hyemoon Chung ... Instead of scoring all TTN truncating variants equally and assuming an underlying loss-of-function mechanism, we only score TTN ... All other settings were left as default and no additional evidence was uploaded. We compared both the final classifications and ... loss of function; MAF, minor allele frequency; CGG, Imperial Cardiovascular Genetics and Genomics; ESP, NHLBI Exome Sequencing ...

https://www.nature.com/articles/gim2017258?error=cookies_not_supported&code=59a9b186-f0ef-419c-921a-01dd4fa9de9b

Cognitive function was assessed using the Patient-Reported Outcomes Measurement Information System (PROMIS) Cognitive Function ... and cognitive function in patients with persistent atrial fibrillation (AF) undergoing electrical cardioversion, compared to ... or cognitive function between patients with persistent AF and controls. The restoration of sinus rhythm was not significantly ... as well as parameters of neuroimaging and cognitive function, were compared between the groups. Neuroimaging was performed ...

https://www.mdpi.com/1422-0067/24/3/2902

Stress cardiomyopathy depresses left atrial function compared to acute anterior myocardial infarction: left atrial size and ... Stress cardiomyopathy depresses left atrial function compared to acute anterior myocardial infarction: left atrial size and ... Little is known about the left atrium (LA) in acute left ventricular (LV) dysfunction. Left atrial systolic function is ... Stress cardiomyopathy depresses left atrial function compared to acute anterior myocardial infarction: left atrial size and ...

https://jcmr-online.biomedcentral.com/articles/10.1186/1532-429X-12-S1-P196

Index: AIM (Africa) Main subject: Echocardiography / Case-Control Studies / Atrial Function, Left / Metabolic Syndrome / Egypt ... Index: AIM (Africa) Main subject: Echocardiography / Case-Control Studies / Atrial Function, Left / Metabolic Syndrome / Egypt ... Strain-strain rate imaging of impaired left atrial function in patients with metabolic syn ... Strain-strain rate imaging of impaired left atrial function in patients with metabolic syndrome ...

https://search.bvsalud.org/aimafro/resource/en/biblio-1272756

... unrelated participants from controls and early-onset atrial fibrillation patients without evidence of heart failure and a left ... Figure 3.. Loss of function variants in TTN among early-onset atrial fibrillation cases and controls. Loss-of-function (LOF) ... Association Between Titin Loss-of-Function Variants and Early-Onset Atrial Fibrillation Seung Hoan Choi 1 , Lu-Chen Weng 1 2 , ... Association Between Titin Loss-of-Function Variants and Early-Onset Atrial Fibrillation Seung Hoan Choi et al. JAMA. 2018. . ...

https://www.ncbi.nlm.nih.gov/pubmed/30535219

Coronary artery disease is associated with impaired atrial function regardless of left ventricular filling pressure. Sharifov ... Obesity and postoperative atrial fibrillation in patients undergoing cardiac surgery: Systematic review and meta-analysis. * ... Predictive ability of HAS-BLED, HEMORR2HAGES, and ATRIA bleeding risk scores in patients with atrial fibrillation. A French ... Gender specific profiles of white coat and masked hypertension impacts on arterial structure and function in the SardiNIA study ...

https://www.internationaljournalofcardiology.com/issue/S0167-5273

Studies may include, for example, the impact of changes in left atrial size and other atrial structural changes on increasing ... shortening of atrial refractory period; depressed sinoatrial and atrioventricular nodal function; increased sinoatrial and ... It has been suggested that the left atrium enlarges, stiffens, and develops fatty infiltrations - especially within the atrial ... Novel interventions (e.g., interventions to prevent left atrial enlargement) could be tested in an efficient manner. Such ...

https://grants.nih.gov/grants/guide/pa-files/PA-99-035.html

Early detection of left atrial and bi-ventricular myocardial strain abnormalities by MRI feature tracking in normotensive or ... hypertensive T2DM patients with preserved LV function Previous studies have found that impaired global myocardial systolic ... However, the effect of hypertension (HT) on left atrial (LA), right ventri... ...

https://www.biomedcentral.com/collections/cvdmanagement

Prognostic value of left atrial function in systemic light-chain amyloidosis: a cardiac magnetic resonance study.. Mohty D; ... 1. Independent prognostic value of left ventricular mass index in patients with light-chain amyloidosis.. Huang H; He H; Qin Y ... Left ventricular assessment in patients with systemic light chain amyloidosis: a 3-dimensional speckle tracking transthoracic ... Prognostic value of right ventricular systolic function in cardiac amyloidosis.. Bodez D; Ternacle J; Guellich A; Galat A; Lim ...

https://pubmedhh.nlm.nih.gov/biomarkers/search.php?id=36196999&mod=related&page=1&from=&outid=&proj=

The hemodynamic and electrophysiological action of the LEFT ATRIUM.. Terms. Atrial Function, Left Preferred Term Term UI ... The hemodynamic and electrophysiological action of the LEFT ATRIUM.. Entry Term(s). Left Atrial Function Previous Indexing. ... Left Atrial Function Term UI T048516. Date05/03/1990. LexicalTag NON. ThesaurusID NLM (1991). ... Atrial Function, Left Preferred Concept UI. M0024878. Scope Note. ...

https://meshb.nlm.nih.gov/record/ui?ui=D016279

Learn the questions your healthcare provider will ask and the tests you may get to diagnose and screen for atrial fibrillation ... left atrium) and how well it is working. This information can help determine if there is a risk for complications from atrial ... Echocardiography (ultrasound) looks at the heart valves, chamber sizes and heart pumping function. This test may show heart ... If you had a stroke and there is no clear cause, your provider may recommend screening for atrial fibrillation with a Holter or ...

https://www.nhlbi.nih.gov/health/atrial-fibrillation/diagnosis

... how this procedure is performed to stop taking anticoagulants if you have atrial fibrillation. Learn more about this procedure ... The atrial appendage is a small cavity located at the top of the left atrium of the heart. Its function is to act as a kind of ... What is atrial appendage closure?. Left atrial appendage closure is a procedure that has gained relevance in recent years. This ... Postoperative follow-up of left atrial appendage closure. Follow-up after atrial appendage closure is critical to ensure the ...

https://www.cun.es/en/diseases-treatments/treatments/left-atrial-appendage-closure

... left ventricular systolic and diastolic functions, left ventricular and atrial compliance, left ventricular hypertrophy and ... However in the presence of significant leaflet calcification, severe left atrial dilatation or distortion of the valve anatomy ...

https://heart.bmj.com/content/99/4/219

... analysis of left ventricular and left-atrial function from intracardiac ultrasound pullback sequences, and non-invasive ... known that the geometric decay of wavelet coefficients in a given subtree is determined by the local regularity of the function ...

http://vlado.fmf.uni-lj.si/sreda/t/17maj00.txt

Left-to-right shunting. Clinical effects of isolated atrial septal defects are usually related to left-to-right shunting. The ... About 15-30% of healthy adults have an unfused foramen ovale in which the valve functions normally but has failed to fuse. In ... Secundum atrial septal defects comprise just over 90% of all atrial septal defects, whereas sinus venosus and primum atrial ... the superior attachments of the flap valve of the foramen ovale lie on the left atrial roof, well to the left of the septum ...

http://emedicine.medscape.com/article/889394-overview

Secondary end points included the risk for incident heart failure, diabetes, atrial fibrillation, dementia or cognitive ... function decline, nephropathy, revascularization, death from any cause, angina, transient ischemic attacks, development of left ...

https://www.renalandurologynews.com/home/departments/commentary/important-lessons-from-ontarget/

... increased left atrial volume, and altered diastolic function. Current characterization of cardiac structure and function in ... the additive effect of left atrial size, and the presence of mitral regurgitation. We also propose to evaluate the clinical and ... Correlation with Echocardiographic-derived Indices of Left Ventricular Function. Alan Waggoner, Victor Davila-Roman, Lisa de ... To meet this goal, it becomes essential to accurately measure myocardial pump function, which has been out of the grasp of ...

https://www.asecho.org/projectsummaries/

Atrial Function G9.330.190.75 G9.330.40 Atrial Function, Left G9.330.190.75.100 G9.330.40.100 Atrial Function, Right G9.330. ... Ventricular Function, Left G9.330.190.962.800 G9.330.955.800 Ventricular Function, Right G9.330.190.962.900 G9.330.955.900 ... 190.75.200 G9.330.40.200 Atrial Pressure G9.330.190.75.600 G9.330.40.600 Atrial Remodeling G9.330.190.75.800 G9.330.40.800 ... Atrial Natriuretic Factor D12.776.543.750.120.500 D12.776.543.750.700.500 Receptors, Autocrine Motility Factor D12.776.543.750. ...

https://decs.bvs.br/E/mnchg2017.txt

Resveratrol reduced infarct size and improved left systolic and diastolic function following myocardial ischemia in rats, ... possibly by reducing atrial natriuretic peptide and transforming growth factor beta1, both of which protect the heart from ... Improved cognitive function was positively correlated to improvements in leptin and HbA1c; the latter suggesting improved ... Metabolism is dependent on intestinal microflora and hepatic function for sulfation.1, 2, 5, 58 The plasma pharmacokinetics of ...

https://www.drugs.com/npp/resveratrol.html

https://meshb-prev.nlm.nih.gov/record/ui?ui=D016279

... with measures of left ventricular (LV) and left atrial mechanical function on cardiac magnetic resonance at 10-year follow-up ( ... lower LV systolic function, and reduced left atrial function over long-term follow-up. These findings provide potential ... MeSH Terms: Aged; Aged, 80 and over; Atrial Function, Left*; Biomarkers/blood; Female; Fibroblast Growth Factors/blood*; Heart ... and lower left atrial total emptying fraction (β coefficient per 1 SD higher, -0.52 [95% CI, -1.02 to -0.02], P=0.04). These ...

https://tools.niehs.nih.gov/portfolio/index.cfm?do=portfolio.publicationDetail&id=4010845

... atrial fibrillation, depressed left ventricle systolic function, pregnancy, some drugs, carcinoma, systemic diseases, defects ... Other causes of coronary embolism include atrial fibrillation, left atrial tumours, bacterial endocarditis, atrial and ... Left atrial dimension and risk of systemic embolism in patients with a prosthetic heart valve. Department of Veterans Affairs ... However, in transoesophageal echocardiography, there was a semi-mobile thrombus on the left atrial surface of the valve ...

https://www.emro.who.int/emhj-volume-17/volume-17-issue-11/article-15.html

Your provider may also recommend healthy lifestyle changes to help you lower your risk of developing atrial fibrillation. (nih.gov)

Most patients have an atrial septal defect or a patent foramen ovale, which allows predominant right-to-left shunting at the atrial level. (medscape.com)
4] In 1958, Hunter and Lillihei described a technique of surgical repair that involved plication of the atrialized right ventricle, closure of the atrial septal defect, and tricuspid valve annuloplasty. (medscape.com)
Patients who simultaneously have the first three types of atrial septal defect, as described below, are said to have common atrium. (medscape.com)
The most common yet least serious type of atrial septal defect is an ostium secundum defect. (medscape.com)

Angiography showed that the left coronary system was normal but the distal portion of the right coronary artery was totally occluded by a thrombus ( Figure 1 ). (who.int)

Other causes of coronary embolism include atrial fibrillation, left atrial tumours, bacterial endocarditis, atrial and ventricular mural thrombus, syphilis and pulmonary vein thrombosis [7]. (who.int)
The most important members of this family include atrial natriuretic peptide (ANP) and B- type natriuretic peptide (BNP) and their amino terminal fragments NT-proANP and NT-proBNP. (acc.org)

In the Posterior left pericardiotomy for the prevention of atrial fibrillation after cardiac surgery (PALACS) trial, posterior pericardiotomy was associated with a significant reduction in postoperative atrial fibrillation (POAF) after cardiac surgery. (qxmd.com)

Atrial fibrillation patients who develop heart failure have a three-fold increased risk of death, while in heart failure patients, the risk of death is two-fold higher when atrial fibrillation is also present. (dicardiology.com)
ESC Guidelines on atrial fibrillation recommend the procedure to reverse left ventricular dysfunction in atrial fibrillation patients when tachycardia-induced cardiomyopathy is highly probable. (dicardiology.com)

Left atrial systolic function is reported as normal in Acute Myocardial Infarction (AMI), but its relationship to the degree of LV dysfunction is unknown. (biomedcentral.com)

A high incidence of atrial and ventricular arrhythmia, including an association with Wolff-Parkinson-White Syndrome, occurs in these patients. (medscape.com)
Atrial fibrillation is the most common cardiac arrhythmia seen in clinical practice today. (nih.gov)
Your healthcare provider may order other tests to record abnormal heart rhythms that occur under specific conditions or outside of the clinic, confirm whether you have atrial fibrillation or another arrhythmia , and find the best treatment. (nih.gov)
Atrial fibrillation is the most common arrhythmia (heart rhythm disturbance). (cun.es)
With this type of arrhythmia, the blood remains stagnant in the left atrial appendage, which favors the formation of embolisms that can detach to other blood vessels, such as those in the brain, reducing blood flow and causing a stroke. (cun.es)
One of the most common causes of this problem is atrial fibrillation (AF) , a cardiac arrhythmia that causes irregular contractions of the atria, affecting millions of people worldwide. (cun.es)
Dr. Natale also is the Senior Medical Director at Pacific Atrial Fib and Arrhythmia Center in San Francisco. (jafib.com)
These include potentially life-threatening forms of arrhythmia called atrial fibrillation and ventricular fibrillation. (medlineplus.gov)

14. Associations of Electrocardiographic Parameters with Left Ventricular Longitudinal Strain and Prognosis in Cardiac Light Chain Amyloidosis. (nih.gov)
Atrial fibrillation and heart failure often coexist.2 It is estimated that approximately 30% of patients with heart failure will develop atrial fibrillation and patients with atrial fibrillation have a five-fold increased risk of developing heart failure.3 Each condition aggravates the prognosis of the other. (dicardiology.com)
ObjectiveTo summarize data on the prevalence/incidence, risk factors and prognosis of atrial fibrillation (AF) in patients with acute coronary syndromes (ACS).MethodsMEDLINE, Embase, and Web of Science were searched to identify all published studies providing relevant data through August 23, 2020. (ox.ac.uk)

The score is based on four parameters: QRS width above 120 milliseconds (2 points), known aetiology (2 points), paroxysmal atrial fibrillation (1 point) and severe atrial dilation (1 point). (dicardiology.com)
Assessment of Left Atrial Function in Patients with Paroxysmal, Persistent, and Permanent Atrial Fibrillation Using Two-Dimensional Strain. (krakow.pl)

11. Prognostic value of left atrial function in systemic light-chain amyloidosis: a cardiac magnetic resonance study. (nih.gov)
15. Left ventricular assessment in patients with systemic light chain amyloidosis: a 3-dimensional speckle tracking transthoracic echocardiographic study. (nih.gov)

The aim of this study was to evaluate the specific neurologic biomarkers, neuroimaging findings, and cognitive function in patients with persistent atrial fibrillation (AF) undergoing electrical cardioversion, compared to control subjects. (mdpi.com)

This process is referred to referred to Al-Azhar University Hospital Outpatient as, diastolic function (3) . (who.int)
Conclusion: PWA did not adversely affect echocardiographic parameters of left atrial function or left ventricular systolic or diastolic function when compared to other types of ablation. (jafib.com)

Little is known about the left atrium (LA) in acute left ventricular (LV) dysfunction. (biomedcentral.com)
This downward displacement of the leaflets reduces the distal chamber of the right ventricle, leaving part of the ventricle above the valve as an extension of the right atrium. (medscape.com)
Cardiac magnetic resonance imaging (MRI) and other imaging tests may be performed in some cases so your provider can see the structure of the left upper chamber of the heart (left atrium) and how well it is working. (nih.gov)
The hemodynamic and electrophysiological action of the LEFT ATRIUM . (nih.gov)
When the heart does not beat efficiently, blood may stagnate in the left atrium. (cun.es)
During embryonic and fetal life, the central portion of the septum primum billows into the left atrium due to the normal right to left shunting at the atrial level. (medscape.com)
If atrial fibrillation occurs when there is a large atrium, for example in mitral stenosis, then this is a predisposing factor to the development of thromboembolism. (gpnotebook.com)

Charles and colleagues reported that coronary embolism occurs in the left coronary artery in 75% of cases and three-quarters of them present with ST elevation myocardial infarction, whereas the rest present with non-ST elevation myocardial infarction [8]. (who.int)

CONCLUSION: Diastolic parameters of left atrial function possibly are more important markers of AF risk than left atrial dilation in HFpEF. (nih.gov)

3 , 4 However they are influenced by many variables such as heart rate, cardiac output, left ventricular systolic and diastolic functions, left ventricular and atrial compliance, left ventricular hypertrophy and concomitant valve disease. (bmj.com)

1) Stress Cardiomyopathy has a direct depressive effect on LA function in addition to its negative effect on the left ventricle. (biomedcentral.com)
myocardial strain in the left and the right ventricle, Even more with the change of the modern lifestyle avoiding the angular sensitivity of tissue Doppler and diet structure, incidence of MS increased year by echocardiography (5) . (who.int)

endocarditis, atrial and ventricular mu- ing treatment of coronary embolism. (who.int)

Methods: We selected patients who had pre and post ablation echocardiogram at our institution.Parameters assessed were: Left ventricular outflow tract velocity time integral (VTI), left ventricular ejection fraction (LVEF), atrial Doppler velocity across mitral valve (A), E/E', and deceleration time. (jafib.com)
The researchers retrospectively identified patients with heart failure, impaired LVEF and atrial fibrillation who had an ablation procedure at eight centers in Europe. (dicardiology.com)

Recent data from the Cardiovascular Health Study suggest that age, male gender, clinical cardiovascular disease, and left atrial size are all important risk factors for AF. (nih.gov)
The talk will concentrate on three cardiovascular applications in which imaging, quantification, and visualization in close-to-real time play an important role: Geometrically correct fusion of intravascular ultrasound and biplane angiography, analysis of left ventricular and left-atrial function from intracardiac ultrasound pullback sequences, and non-invasive assessment of cardiovascular system status via brachial artery flow-mediated dilatation approach. (uni-lj.si)
Sensitive measures of cardiovascular structure and function may provide mechanistic insight behind the associations of FGF23 with various cardiovascular diseases. (nih.gov)

They will have tests of their cognitive function. (nih.gov)

Atrial fibrillation incidence, prevalence, predictors, and adverse outcomes in acute coronary syndromes: A pooled analysis of data from 8 million patients. (ox.ac.uk)

However in the presence of significant leaflet calcification, severe left atrial dilatation or distortion of the valve anatomy, it can be very challenging to obtain a perfect geometric alignment at the MV leaflet tips in a parasternal short-axis view using two-dimensional (2D) echocardiography. (bmj.com)

Left atrial appendage closure. (cun.es)
What is atrial appendage closure? (cun.es)
Left atrial appendage closure is a procedure that has gained relevance in recent years. (cun.es)
To understand the procedure for atrial appendage closure of the heart, it is first necessary to understand what the atrial appendage is and what its function is. (cun.es)
Atrial appendage closure of the heart is performed by a minimally invasive procedure known as percutaneous closure. (cun.es)
Before performing an atrial appendage closure, the physician will perform a series of tests to determine whether the patient is suitable for this treatment. (cun.es)
These tests include transesophageal echocardiography and computed tomography to analyze the anatomy of the atrial appendage and to rule out the presence of clots prior to the procedure. (cun.es)
Through a catheter, a closure device (such as the Watchman) is inserted into the left atrial appendage. (cun.es)

8. Clinical features and predictors of atrial fibrillation in patients with light-chain or transthyretin cardiac amyloidosis. (nih.gov)

Echocardiography (ultrasound) looks at the heart valves, chamber sizes and heart pumping function. (nih.gov)
soesophageal echocardiography, there encountered rarely, it is an important Angiography showed that the left coro- was a semi-mobile thrombus on the left and serious complication. (who.int)
However, in transoesophageal echocardiography, there was a semi-mobile thrombus on the left atrial surface of the valve measuring 5 × 5 mm ( Figure 2 ). (who.int)

We compared the effect of PWI versus non-PWI methods (CPVA + linear lesions) on echocardiographic parameters of left atrial and left ventricular function. (jafib.com)

METHODS: In MESA (the Multi-Ethnic Study of Atherosclerosis), we evaluated the associations of baseline serum FGF23 (2000-2002) with measures of left ventricular (LV) and left atrial mechanical function on cardiac magnetic resonance at 10-year follow-up (2010-2012). (nih.gov)
Atrial fibrillation is a supraventricular tachyarrhythmia characterised by ineffective, chaotic, irregular and rapid (300 to 600 beats per minute) atrial activity resulting in the deterioration of atrial mechanical function (1). (gpnotebook.com)

Cardiac sympathetic nervous (CSN) function and left atrial (LA) volume are both important prognostic factors in patients with aortic stenosis (AS) after TAVR. (bvsalud.org)
1. Independent prognostic value of left ventricular mass index in patients with light-chain amyloidosis. (nih.gov)

Hemodynamic studies conducted in patients with normal left ventricular function produced, following intravenous isradipine administration, increases in cardiac index, stroke volume index, coronary sinus blood flow, heart rate, and peak positive left ventricular dP/dt. (nih.gov)

Pulsed Wave Doppler (PWD) or Continuous Wave Doppler abnormal cardiac function and diagnosing valvular stenosis and (CWD). (nih.gov)

Left-atrial volume reduction reflects improvement of cardiac sympathetic nervous function in patients with severe aortic stenosis after transcatheter aortic valve replacement. (bvsalud.org)

ed about warfarin and possible adverse that coronary embolism occurs in the We administered unfractionized reactions with other drugs and followed left coronary artery in 75% of cases and heparin and tirofiban (glycoprotein regularly. (who.int)

Flow Cytometric Assessment of Endothelial and Platelet Microparticles in Patients With Atrial Fibrillation Treated With Dabigatran. (krakow.pl)

All subjects underwent conventional echocardiographic examination and assessment of LA function by speckle tracking. (bvsalud.org)
The objectives of these studies are to understand the role that cell cycle-related changes play in the development of cardiomyopathy and the ability of sophisticated echocardiographic measurements of myocardial motion to detect changes in ventricular function during that progression. (asecho.org)

He has pioneered a new circumferential ultrasound vein-ablation system to correct atrial fibrillation and performed the procedure on the world's first five patients. (jafib.com)

Background: Posterior wall isolation(PWI)in addition to circumferential pulmonary vein isolation (CPVA) requires more ablation of left atrial tissue. (jafib.com)

RESEARCH OBJECTIVES Atrial fibrillation (AF) is recognized as a condition which causes significant morbidity, disability, and mortality related to heart disease and stroke. (nih.gov)

CSN function was assessed by performing 123I-metaiodobenzylguanidine ( MIBG ) scintigraphy before and 6 months after TAVR, and the delayed heart -to- mediastinum ratio (dHMR) and washout rate (WR) were calculated. (bvsalud.org)
Metabolic syndrome (MS) predisposes to left ventricular dysfunction and heart failure , however, alterations in left atrial (LA) function in MS are unknown. (bvsalud.org)
IMPACT OF AGING ON DEVELOPMENT OF ATRIAL FIBRILLATION Release Date: January 8, 1999 PA NUMBER: PA-99-035 P.T. National Institute on Aging National Heart, Lung, and Blood Institute PURPOSE The goal of this program announcement (PA) is to foster research that will enhance our understanding of age-related structural and functional changes in the atria and their impact on the development of atrial fibrillation (AF) in older persons. (nih.gov)
This PA, Impact of Aging on Development of Atrial Fibrillation, is related to the priority area of heart disease and stroke. (nih.gov)
Your provider will ask about your eating and physical activity habits, family history, and other risk factors for atrial fibrillation and heart disease. (nih.gov)
To diagnose atrial fibrillation, your provider will likely do one or more heart or blood tests . (nih.gov)
In approximately one half of patients with left atrioventricular (AV) valve underdevelopment (ie, hypoplastic left heart syndrome or Shone complex), the superior attachments of the flap valve of the foramen ovale lie on the left atrial roof, well to the left of the septum secundum. (medscape.com)
BACKGROUND: Although FGF23 (fibroblast growth factor 23) is associated with heart failure and atrial fibrillation, the mechanisms driving these associations are unclear. (nih.gov)
This condition affects the function of the sino-atrial (SA) node, which is an area of specialized cells in the heart that functions as a natural pacemaker. (medlineplus.gov)
AIMS: To determine if markers of diastolic dysfunction are associated with atrial fibrillation (AF) development among patients with heart failure with preserved ejection fraction (HFpEF). (nih.gov)
79% white) with HFpEF from the Treatment of Preserved Cardiac Function Heart Failure With an Aldosterone Antagonist Trial (TOPCAT) who were free of baseline AF. (nih.gov)

Examine the relationship between LA and LV with respect to size and function in the setting of acute LV dysfunction. (biomedcentral.com)

Further evidence is needed to help stratify and identify those patients who will most likely benefit from atrial fibrillation ablation. (dicardiology.com)

This initiative is intended to foster clinically-related research, including integrative biomedical research, some of which may incorporate the tools of molecular and cell biology in the study of function and clinical outcome. (nih.gov)
(5-7) ANP is rapidly released into the circulation in response to atrial wall stretch, but due to its extremely short-half life (2-5 min) is not a useful tool in a clinical setting. (acc.org)

We aimed to use strain / strain rate (SR) imaging to investigate the effect of MS on LA function. (bvsalud.org)
In these aims, we will determine the ability of myocardial tissue motion, strain, and strain rate using velocity-vector imaging to provide insight into early and more subtle abnormalities of dysregulated myocardial function. (asecho.org)

3) Little correlation exists between atrial and ventricular function in either disease state. (biomedcentral.com)
Partial correlation and multiple stepwise regression analyses were used to determine the risk factors for impaired LA function. (bvsalud.org)

This information can help determine if there is a risk for complications from atrial fibrillation. (nih.gov)

Atrial septal defects (ASDs) are a prevalent form of CHD. (medscape.com)
Four basic types of atrial septal defects are known. (medscape.com)

However, they may also check for symptoms of atrial fibrillation as part of your regular medical care. (nih.gov)

0.05 for all), with no difference in the mean peak late diastolic SR. Central obesity , hypertension , dyslipidemia and uncontrolled diabetes were independent risk factors for impaired LA function. (bvsalud.org)
If you have atrial fibrillation, your provider will also look for any disease that may be causing it and assess your risk of developing dangerous blood clots. (nih.gov)
Your healthcare provider may screen you for atrial fibrillation only when you have risk factors. (nih.gov)
Increasing values of the E/A ratio [per 0.1 increase: hazard ratio (HR) = 1.11, 95% confidence interval (CI) = 1.06-1.17], left atrial volume (per 5 mL increase: HR = 1.13, 95% CI = 1.03-1.23), and left atrial area (per 5 cm2 increase: HR = 1.51, 95% CI = 1.03-2.22) were associated with greater risk of AF. (nih.gov)
The risk of AF was not materially altered when peak A wave velocity was further adjusted for left atrial volume (HR = 0.83, 95% CI = 0.71-0.96) and area (HR = 0.83, 95% CI = 0.71-0.96). (nih.gov)

However, it is not known whether MS is also function in patients with metabolic syndrome by 2D associated with abnormal cardiac function. (who.int)

Anatomy1

Diseases3

Analytical, Diagnostic and Therapeutic Techniques and Equipment10

Phenomena and Processes9

Health Care1

Effects of pacing-induced and balloon coronary occlusion ischemia on left atrial function in patients with coronary artery disease. (1/343)

Pulmonary venous flow in hypertrophic cardiomyopathy as assessed by the transoesophageal approach. The additive value of pulmonary venous flow and left atrial size variables in estimating the mitral inflow pattern in hypertrophic cardiomyopathy. (2/343)

Doppler sonographic evaluation of left atrial function after cardioversion of atrial fibrillation. (3/343)

Importance of left atrial appendage flow as a predictor of thromboembolic events in patients with atrial fibrillation. (4/343)

Short-term effect of atrial fibrillation on atrial contractile function in humans. (5/343)

Left atrial relaxation and left ventricular systolic function determine left atrial reservoir function. (6/343)

Noninvasive assessment of left atrial maximum dP/dt by a combination of transmitral and pulmonary venous flow. (7/343)

The pulmonary venous systolic flow pulse--its origin and relationship to left atrial pressure. (8/343)

Atrial Function, Left

Atrial Function

Atrial Function, Right

Heart Atria

Atrial Fibrillation

Echocardiography, Doppler

Echocardiography, Doppler, Pulsed

Pericardiectomy

Electric Countershock

Ventricular Function, Left

Myocardial Contraction

Echocardiography

Heart Function Tests

Echocardiography, Transesophageal

Ventricular Function

Stroke Volume

Observer Variation

Blood Flow Velocity

Hemodynamics

Ventricular Dysfunction, Left

Hypertrophy, Left Ventricular

Effects of pacing-induced and balloon coronary occlusion ischemia on left atrial function in patients with coronary artery disease. (1/343)

Pulmonary venous flow in hypertrophic cardiomyopathy as assessed by the transoesophageal approach. The additive value of pulmonary venous flow and left atrial size variables in estimating the mitral inflow pattern in hypertrophic cardiomyopathy. (2/343)

Doppler sonographic evaluation of left atrial function after cardioversion of atrial fibrillation. (3/343)

Importance of left atrial appendage flow as a predictor of thromboembolic events in patients with atrial fibrillation. (4/343)

Short-term effect of atrial fibrillation on atrial contractile function in humans. (5/343)

Left atrial relaxation and left ventricular systolic function determine left atrial reservoir function. (6/343)

Noninvasive assessment of left atrial maximum dP/dt by a combination of transmitral and pulmonary venous flow. (7/343)

The pulmonary venous systolic flow pulse--its origin and relationship to left atrial pressure. (8/343)

Pacemaker syndrome

MYL4

Tissue Doppler echocardiography

Atrial fibrillation

Common ostrich

List of MeSH codes (G09)

Christodoulos I. Stefanadis

Atrial natriuretic peptide

Relative Atrial Index

Diastolic function

Restrictive cardiomyopathy

Regurgitation (circulation)

Amiodarone induced thyrotoxicosis

MYH10

Atrial flutter

Signs and symptoms of Graves' disease

Ventricular remodeling

Lutembacher's syndrome

Tachycardia-induced cardiomyopathy

Pilsicainide

Atrium (heart)

Heart valve

Pathophysiology of heart failure

Heart failure

Low pressure receptors

Cardiology

Digitalis

Artificial cardiac pacemaker

Heart failure with preserved ejection fraction

Intensive care medicine

Strømme syndrome

List of cardiology mnemonics

Sándor J. Kovács

Nephron

List of circulatory system conditions

Fetal aortic stenosis

Cardiac catheterization

Carney complex

Apperceptive agnosia

Coronary sulcus

Pericardial heart valves

Management of atrial fibrillation

Ectopic pacemaker

Cardiac pacemaker

Periodontal disease

Noonan syndrome

Pericardium

Exercise intolerance

Fetal alcohol spectrum disorder

ACTC1

List of OMIM disorder codes

$Heart failure with preserved ejection fraction$ Heart failure with preserved ejection fraction