Atrium Heart Atrium heart atria of the heart function ideas. Atrium heart chambers ideas. Atrium heart atrial fibrillation harvard health. Atrium Heart Atrium heart overview of atrial fibrillation free. Atrium heart atrium advanced cardio services download. Atrium heart about atrial fibrillation atrium vs ventricle anatomy. Atrium Heart ...
Arrhythmia, infarct: Heart Atrium, right, 1 mg. Tissue total protein is prepared from whole tissue homogenates and presents a consistent pattern on SDS-PAGE analysis.
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Detecting left atrial enlargement is frequently suspected in line with the presentation of signs and symptoms of the underlying cardiogenic condition. Once other tests addressing other complications are carried out to assist eliminate any potentially existence-threatening disorders, additional testing searching in the structure from the heart can be achieved to find out if left atrial enlargement exists.. Probably the most generally done test to identify left atrial enlargement is applying imaging methods known as echocardiograms. To control your emotions by utilizing seem waves to consider images of the center structures. Using other imaging tests, namely CT or MRI scans, may also be used to identify left atrial enlargement.. With respect to the underlying condition, treatment will normally follow. For instance, treating high bloodstream pressure calls for the effective use of bloodstream pressure medication for example beta-blockers and diuretics. Also, maintaining a healthy diet plan, ...
Looking for Pectinate muscles? Find out information about Pectinate muscles. the contractile tissue that effects the movement of and within the body. Muscle tissue in the higher animals is classified as striated, smooth, or cardiac,... Explanation of Pectinate muscles
Introduction: The development of improved diagnosis, management, and treatment strategies for human atrial fibrillation (AF) is a significant and important challenge in order to improve quality of life for millions and reduce the substantial social-economic costs of the condition. As a complex condition demonstrating high variability and relation to other cardiac conditions, the study of AF requires approaches from multiple disciplines including single-cell experimental electrophysiology and computational modeling. Models of human atrial cells are less well parameterized than those of the human ventricle or other mammal species, largely due to the inherent challenges in patch clamping human atrial cells. Such challenges include, frequently, unphysiologically depolarized resting potentials and thus injection of a compensatory hyperpolarizing current, as well as detecting certain ion currents which may be disrupted by the cell isolation process. The aim of this study was to develop a laboratory specific
The ionic mechanisms underlying many important properties of the human atrial action potential are poorly understood. Using specific formulations of the K+, Na+ and Ca2+ currents based on experimental data recorded from human atrial myocytes, along with representations of pump, exchange and background currents, Marc Courtemanche, Rafael J. Ramirez and Stanley Nattel developed a mathematical model of the action potential (see the figure below). This mathematical model builds mostly on the classical work of Luo and Rudy (see The Luo-Rudy Ventricular Model II (dynamic), 1994). Courtemanche et al effectively develop a working model of the human atrial action potential from the Luo-Rudy model which is based on guinea pig ventricular cells. Their primary goal was to develop a useful model of the action potential from which they could gain insights into experimental observations made on human atrial cells and tissues and make predictions regarding the behaviour of these cells under previously untested ...
Although isolated mitochondria experiments showed that aging-related dysfunction of mitochondrial respiration may prevent APC, isoflurane could still protect isolated intact aged human cardiomyocytes from stress-induced cell death. Indeed, pretreatment of MA myocytes with isoflurane improved cell survival during acute oxidative stress, whereas this effect was much less pronounced in OA myocytes, suggesting that aging-related changes in mitochondrial function could affect viability of MA and OA myocytes. The involvement of another potential effector of APC, the sarcKATPchannel,14 in human cardiomyocyte protection was tested using HMR-1098, the sarcKATPchannel blocker. HMR-1098 attenuated the protection by isoflurane, suggesting that in adult human atrial myocytes, protection from stress is mediated partly via sarcKATPchannel. The properties of single sarcKATPchannels from adult human right atrial myocytes, amplitude of unitary KATPcurrent, slope conductance at negative membrane potentials, and ...
Pectinate muscles make up the part of the wall in front of this, the right atrial Structure There are five total papillary muscles in the heart; three in the right.
A heartbeat is one cycle in which your hearts ventricles relax (diastole) and squeeze (systole) to pump blood. This cycle includes the opening and closing of the valves of your heart.. When your hearts ventricles relax, blood flows from the atria to the ventricles. Your hearts atria squeeze and pump blood into the ventricles. The atria then relax. Your hearts ventricles then squeeze, pumping blood out of your heart.. ...
When the upper chambers of the heart (atria) dont pump efficiently, as in atrial fibrillation, theres a risk of blood clots forming.. These blood clots may move into the lower chambers of the heart (ventricles), and get pumped into the blood supply to the lungs or the general blood circulation. Clots in the general circulation can block arteries in the brain, causing a stroke.. Atrial fibrillation increases the risk of a stroke by around four to five times. However, the risk depends on a number of factors, including age and whether you have high blood pressure (hypertension), heart failure, diabetes and a previous history of blood clots.. ...
When the upper chambers of the heart (atria) dont pump efficiently, as in atrial fibrillation, theres a risk of blood clots forming.. These blood clots may move into the lower chambers of the heart (ventricles), and get pumped into the blood supply to the lungs or the general blood circulation. Clots in the general circulation can block arteries in the brain, causing a stroke.. Atrial fibrillation increases the risk of a stroke by around four to five times. However, the risk depends on a number of factors, including age and whether you have high blood pressure (hypertension), heart failure, diabetes and a previous history of blood clots.. ...
When the upper chambers of the heart (atria) do not pump efficiently, as in atrial fibrillation, theres a risk of blood clots forming.. These blood clots may move into the lower chambers of the heart (ventricles) and get pumped into the blood supply to the lungs or the general blood circulation.. Clots in the general circulation can block arteries in the brain, causing a stroke.. Atrial fibrillation increases the risk of a stroke by around 4 to 5 times.. But the risk depends on a number of factors, including your age and whether you have high blood pressure (hypertension), heart failure, diabetes and a previous history of blood clots. ...
Stage B1 Chronic Degenerative Valve Disease (CDVD). CDVD is a condition in which the valves regulating blood flow through the small chambers of the heart (atria) and the larger pumping chambers of the heart (ventricles) undergo degenerative changes and no longer create a tight seal when the ventricles contract. These changes allow blood to "regurgitate", or leak back into the atria (see image to the right). The blood flowing across the leak creates the murmur that we hear. Some dogs have a leak only across the mitral valve on the left side of the heart, and some dogs have leaks across multiple heart valves.. Stage B1 refers to a patient that has developed a leak across its valve, but the condition has not yet caused enlargement, or "remodeling" of the heart. Stage B1 is therefore considered an early and mild form … Read More ». ...
Results Early death occurred in five (1.3%) and nine (2.5%) patients in the maze and the no-maze group, respectively (p=0.28). Freedom from AF at 5 years was 68.9% in the maze group and 9.6% in the no-maze group (p,0.001). After adjustment, the maze group showed a significantly lower risk of death (HR, 0.65; 95% CI 0.44 to 0.98; p=0.038), thromboembolic events (HR, 0.23; 95% CI 0.09 to 0.58; p=0.002) and composite adverse outcomes (death, congestive heart failure and valve-related complications; HR, 0.55; 95% CI 0.42 to 0.71; p,0.001) than the no-maze group. In subgroup analyses, MV surgery with the maze procedure resulted in higher survival and event-free survival in most risk subgroups than without the maze procedure. ...
Electrophysiological testing is a procedure used to provoke known, but infrequent, arrhythmias and to unmask suspected arrhythmias. Using local anesthesia, temporary electrode catheters are positioned in the hearts atria and/or ventricles and at strategic locations to record cardiac electrical signals and "map" the spread of electrical impulses during each heartbeat.. ...
Electrophysiological testing is a procedure used to provoke known, but infrequent, arrhythmias and to unmask suspected arrhythmias. Using local anesthesia, temporary electrode catheters are positioned in the hearts atria and/or ventricles and at strategic locations to record cardiac electrical signals and "map" the spread of electrical impulses during each heartbeat.. ...
Urodilatin (95-126) originally extracted from human urine that corresponds to the family of natriuretic-vasorelaxant peptides found earlier in heart atria. Infusion of this peptide is found to represent a concept for the treatment of therapy-resistant acute renal failure after liver transplantion. The use of NATR-004 is protected by patents.
Background: We sought to establish the predictive ability of left atrial (LA) volume index for stroke, heart failure (HF) hospitalization, and mortality, and to define its value in relation to left ventricular ejection fraction (LVEF) among outpatients with coronary artery disease.. Methods: We measured LA volume in 936 adults enrolled in the Heart and Soul Study without atrial fibrillation, flutter, or significant mitral valve disease. Outcomes for HF, stroke, and mortality were determined by blinded adjudication. Logistic regression was used to calculate odds ratios (OR) adjusted for age, sex, body mass index, race, systolic and diastolic blood pressure, past medical history, alcohol consumption, smoking, diastolic dysfunction, and LVEF.. Results: Mean LA volume index was 33 ± 11 ml/m2; mean LVEF was 62 ± 9.7%. There were 77 HF hospitalizations, 21 strokes, and 117 deaths at 3.5 years follow-up. By c-statistics, the unadjusted discriminative ability for LA volume index was 0.68 for HF, 0.60 ...
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Laboratory evaluation revealed a creatinine level of 1.4 mg per deciliter (124 µmol per liter), an albumin level of 3.6 g per deciliter, and a brain natriuretic peptide level of 526 pg per milliliter (normal range, 0 to 100 pg per milliliter); liver function was normal ...
Krzysztof Bartus; Radoslaw Litwinowicz; Boguslaw Kapelak; Grzegorz Filip; Karol Wierzbicki; Randall J. Lee DOI: 10.21470/1678-9741-2018-0390. ...
TY - JOUR. T1 - Apelin regulates the electrophysiological characteristics of atrial myocytes. AU - Cheng, Chen Chuan. AU - Weerateerangkul, Punate. AU - Lu, Yen Yu. AU - Chen, Yao Chang. AU - Lin, Yung Kuo. AU - Chen, Shih Ann. AU - Chen, Yi Jen. PY - 2013/1. Y1 - 2013/1. N2 - Backgroud: Apelin, a potential agent for treating heart failure, has various ionic effects on ventricular myocytes. However, the effects of apelin on the atrium are not clear. The purpose of this study was to investigate the acute effects of apelin on the electrophysiological characteristics of atrial myocytes. Method: Whole-cell patch-clamp techniques were used to investigate the action potential (AP) and ionic currents in isolated rabbit left atrial (LA) myocytes before and after the administration of apelin. Result: Apelin reduced LA AP duration measured at 90%, 50% and 20% repolarization of the amplitude by 11±3%, 24±5%, 30±7% at 1nM (n=11), and by 14±4%, 36±6% and 45±5% at 10nM (n=11), but not at 0·1nM. Apeline ...
We evaluated the relationship between susceptibility to arrhythmias caused by right atrial (RA) enlargement and alterations in transmembrane potentials and ultrastructure. RA enlargement was produced in eight dogs (TI) by excising the septal cusp of the tricuspid valve through a right atriotomy and constricting the pulmonary artery. This procedure resulted in RA dilation and hypertrophy. Four sham-operated dogs (S) also were studied. Neither TI nor S dogs developed spontaneous atrial arrhythmias. Atrial overdrive (OD) and premature stimulation (PS) were used to initiate and terminate arrhythmias. At 2 weeks and for 20 to 30 weeks after surgical preparation, TI dogs were more susceptible to arrhythmias than S dogs. The duration of arrhythmias exceeded 10 minutes more often in TI dogs than in S dogs. Sixty-one percent of all arrhythmias in the TI dogs had rates of 320-450 impulses/min, and electrogram and ECG characteristics of atrial flutter (type II rhythm), whereas no S dogs developed rhythms ...
This article provides a state-of-the-art perspective of left atrial anatomy and physiology. Left atrial structure and function can be used to reflect and quantify the physiologic state of complex disease processes. No single left atrial anatomi
Introduction. Hypertension plays a significant role in the etiology of various cardiovascular diseases. Pulse pressure (PP), defined as the difference between systolic blood pressure (SBP) and diastolic blood pressure (DBP), has a strong and independent association with cardiovascular morbidity and mortality.1. Atrial fibrillation (AF) is the most common sustained arrhythmia, for which the classical risk factors are age, diabetes, obesity, hypertension, left ventricular hypertrophy, coronary artery disease, heart failure and valvular disease.2 Previous studies have indicated that both high blood pressure (BP)3 and elevated PP independently predict development of AF.4 Additionally, increased PP is associated with left atrial (LA) enlargement, which is another known risk factor for AF.5 Although pathophysiologically it has been proposed that increased arterial stiffness can lead to increased left ventricular load by elevating PP, it has been determined that PP elevation is a more important risk ...
These flow visualisations in the normal human left atrium show that the right and left pulmonary venous inflows behave very differently through the cardiac cycle. The comparatively longer flow pathways of the left lower pulmonary venous inflow appear paradoxical, given that the vein enters in close proximity to the mitral annulus. Instead of first in, first out transit, the left sided inflows are incorporated and recirculate in vortices before finally moving into the left ventricle. The systolic and diastolic vortices result from the interaction of the disparate right and left pulmonary venous inflows with the atrial walls and with each other during the phases of the cardiac cycle when outflow from the atrium diminishes or stops. The residual atrial volume present in the chamber at the onset of those phases is entrained by the inflow and incorporated into the vortex, thereby avoiding complete deceleration. Inflow from the right pulmonary veins follows the vortex at its periphery, constrained ...
The right atrium is one of the four chambers of the heart. The heart is comprised of two atria and two ventricles. Blood enters the heart through the two atria and exits through the two ventricles. Deoxygenated blood enters the right atrium through the inferior and superior vena cava. The
LA dissection is a rare complication that occurs predominantly after mitral valve (MV) repair/replacement and occasionally after blunt cardiac trauma, acute myocardial infarction, prosthetic endocarditis, and aortic valve surgery.1-3 The dissection usually originates from the posterior mitral annulus to involve the posterior LA wall; it rarely originates from the anterior mitral annulus to involve the IAS.4 The dissection creates a large expanding cavity between the LA endocardium and the myocardium. In the acute setting, rapid expansion of this dissection cavity may encroach onto the adjacent structures and lead to a decrease in the size of the true LA cavity and obstruction of the LV inlet, pulmonary veins, or even rupture into the true LA cavity, RA, or pericardial cavity.1-4 In our case, the large LA posterior dissection cavity compressed the anterior, true LA cavity and encroached on the mitral prosthesis to cause obstruction of the LV inlet. It communicated with the LV via a small mitral ...
Atrial fibrillation (AF or AFib) is the most common type of heart arrhythmia. It occurs when the atria contract in a fast and erratic manner, making the muscle look like it is quivering. The atrias job is to push blood into the ventricles before they contract. If the atria are beating faster than the ventricles, the ventricles can not completely fill with blood. This can decrease the amount of blood available to push out to the body. Some people have AF without any symptoms. In those that have them, AF can cause palpitations, shortness of breath, lightheadedness, or cognitive impairment. If you have these symptoms, talk to your doctor. People with AF also have an increased risk of stroke or heart attack. Irregular contractions of the atria can cause blood to pool in the atria, which can lead to blood clots. These clots can travel to the brain and cause a stroke. The extra stress on the heart because of poor blood flow from the atria to the ventricle can also eventually lead to heart failure. ...
TY - JOUR. T1 - Best method in clinical practice and in research studies to determine left atrial size. AU - Lester, Steven Jay. AU - Ryan, Elizabeth W.. AU - Schiller, Nelson B.. AU - Foster, Elyse. PY - 1999/10/1. Y1 - 1999/10/1. N2 - Although the anteroposterior dimension of the left atrium is universally used in clinical practice and research, we hypothesized that it may be an inaccurate surrogate for volume because its use is based on the unlikely assumption that there is a constant relation among atrial dimensions. The following measurements of the left atrium were made at end ventricular systole: (1) M-mode-derived anteroposterior linear dimension from the parasternal long-axis view; (2) digitized planimetry of the left atrial (LA) cavity from the apical 4-chamber view; and (3) digitized planimetry of the LA cavity from the apical 2-chamber view. The following volume calculations were obtained from these digital measurements: (1) volume derived from the M-mode dimension assuming a ...
Figure 2-35 Various locations of left ventricular false tendons. A. Two false tendons arrows from posteromedial mitral papillary muscle PM to ventricular
Sigma-Aldrich offers abstracts and full-text articles by [Angela S Koh, Venkatesh L Murthy, Arkadiusz Sitek, Peter Gayed, John Bruyere, Justina Wu, Marcelo F Di Carli, Sharmila Dorbala].
The pericardium, myocardium and endocardium are the three tissues of the heart from the outside to the inside. The endocardium is the deep tissue in contact with the blood of the cavities of the two Atria and two ventricles;. The ventricles and Atria are the two pairs of Chambers of the heart. The left atrium receives the blood oxygenated through the lungs, it sends it to the left ventricle that extrudes it to all cells in the body via the aorta. The less oxygenated blood returns to the heart by the vena cava at the level of the right atrium. The blood is sent to the right ventricle and the pulmonary artery that sends the blood carry oxygen in the lungs.. To learn more about the anatomy of the heart muscle, read our article "the heart, this extraordinary pump".Heart failure is the inability of one or other of the ventricles to provide blood flow to the bodys needs. Antihypertensive drugs are used to restore a (TA) blood pressure normal blood pressure. This class of drugs includes a very large ...
ventricles - the main pumping chambers of the heart. These are thick walled and very muscular; they are the high pressure pumps. Blood is received from the lungs and body through the atria and then pumped forcibly out to the body and lungs. atrium (AY-tree-um) plural atria (AY-tree-ah) - the low pressure priming pumps of the heart. They recieve blood back from the lungs and the body and pump it into the ventricles. The atria are low pressure pumps, with thin walls. The pacemaker of the heart is found in the atria. aorta (ay-OR-tah) - main artery from the left side of the heart to the body pulmonary artery - main artery from the right side of the heart to the lungs vena cava (VEE-nah CAY-vah) - main return vein from the body to the heart; divided ...
The atrium and ventricles differ in location and function. The atria are located at the top of the heart, while the ventricles...
A rotor of a computed tomography apparatus has a rotatable mechanical support frame for mechanical retention of electrical components and electrical connection elements for electrical connection with
Im just going to link you to another post here, which I believe answers the same question. Its because the facilitation of the transient outward current if much more prominent in epicardial regions than in endocardial regions.. And the following citation, "Transient outward potassium current, Ito, phenotypes in the mammalian left ventricle: underlying molecular, cellular and biophysical mechanisms," provides some mechanistic insight.. To answer the rest of the question:. So in an ECG you have leads that record whether a charge is moving toward, or away from the lead. These net charges are reflected on the ECG as either positive or negative deflections. You have a signal from the sinoatrial node that causes a depolarization in the right atrium, then the left atrium (biphasic p wave). In each case, however, we see the positive p wave because in this depolarization the net charge is moving toward the electrodes. Studies on atrial repolarization note that yes, the atrial repolarization is ...
Process for controlling a double atrial triple chamber pacemaker having a right atrial electrode and a left atrial electrode connected to one and the same atrial circuit for the detection/stimulation of the atrium, as well as a ventricular electrode connected to a ventricular circuit for the detection/stimulation of the ventricle. The control process includes receiving at the input of the atrial circuit and the ventricular circuit a succession of depolarization signals, determining a possibly premature character of the depolarization signal sensed at the input of the atrial circuit, in case of determined prematurity, examining, during the duration of a predetermined window of listening, signals sensed at the input of the ventricular circuit and, in case of a ventricular signal reception, inhibiting all correlated atrial stimulation, and in the absence of sensing a ventricular signal, proceeding to an atrial stimulation at both atria at the end of the listening window duration, and, in the case of no
, Human Atrium, right (hypertension) tissue lysate, GTX25590, Applications: ELISA, IP, WB; ELISA, Immunoprecipitation, Western Blot (WB); CrossReactivity:
The cardiac silhouette is enlarged on the lateral view extending more than 2/3 the height of the thorax and occupying 4 ½ intercostal spaces. The trachea is elevated and runs nearly perpendicular to the spine. There is enlargement of the left atrium on the lateral view and bowing of the mainstem bronchi on the VD/DV view also indicating left atrial enlargement. The left ventricle also appears to be enlarged. On the VD/DV view, there is a focal dilation of the proximal descending aorta. There is also a dilation of the main pulmonary outflow. There is a prominent vascular pattern in the caudal dorsal lung fields and pulmonary veins appear larger than pulmonary arteries. ...
The normal pathway, through the AV Node, still exists.. Typically the extra pathway allows quicker transmission of the electrical signal, which originated up in the SA Node. Remember, the AV Node is kindve the gatekeeper to the ventricles. The electrical signals move slower through it, and it can let fewer through. This has important implications for some of the risks with WPW.. Patients with Wolf-Parkinson-White can develop re-entry tachycardia. While more complicated than this, it can basically be thought of that the electrical signal gets caught in "loop" between the normal pathway and the extra pathway, continually stimulating the ventricles more than they should be and causing them to contract quicker (causing the increased heart rate aka tachycardia).. Beyond that threat other dysrhythmias are possible with WPW. The biggest risk is probably atrial fibrillation. In this condition, the SA Node basically is dysfunctional. The electrical impulses generated in the two atria are just insane and ...
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Heres another mixed bag of last minute holiday downloads. The quick lowdown on these: Nathaniel Mayer is, well, Eli "Paperboy" Reed lite. The ladies probably dig him as some sort of dreamy soul dude version of Chris Issacs (he, in his Herb Ritts meets Roy Orbison thang). Personally, I like my guy soul singers with a little more grunt, but he does have a good voice. The next one, by El Vez, is a surprisingly good rockabilly song, easy on the usual El Vez shtick. The Dirtbombs cut is of interest, if for no other reason, because, its uncharacteristically mellow. Same goes for Rocket From the Crypt, although Id put in on anyways to give props to my homeboys, in my opinion one of the best bands ever to come out of San Diego (really, their rockin stuff is way better). The John Lennon song should be familiar to everyone (I really dig the "War is over, if you want it" background vocals). The Ramones cut woulda been better it it was on one of the first three albums, ifn you know what I mean. But, ...
Hollow muscle with 4 chambers surrounded by thick walls of tissue (septum). The atria are the 2 upper chambers; the ventricles are the 2 lower chambers.
The distinctive atrium at the entrance to the Women & Childrens Unit at the Princess Royal Hospital in Telford, Shropsh
The frog circulatory system consist of two atria and one single ventricle. It is the only organ within the coelom which has its own protective covering. The single ventricle is not divided into two compartments like a humans heart, but it is separated enough for the blood not to get mixed. This is done by the arrangement of the frogs heart, where the right atrium dips downward into the ventricle. Which causes oxygen-poor blood that is entering the right atrium to pass all the way down to the bottom of the ventricle. At the same time, oxygen-laden blood is received by the left atrium and enters the same single ventricle. The pool of oxygen-poor blood at the bottom of the ventricle holds up the oxygen -laden blood and prevents it from sinking to the bottom. Then the oxygen-poor blood flows from the ventricle into the vessels leading to the lungs and the oxygen-laden blood is forced into the arteries ...
In the uncommon anatomic variation of the course of the RCA, the mid and distal segments course through the atrial chamber. The clinical consequence is minimal except during any procedure where a wire is passed into or through the right atrium, w...
A heartbeat begins with a contraction of the hearts two upper chambers (the atria). The left atrium gets oxygen-rich blood from the lungs; the right atrium…
Heart What is your heart? Your heart is about the size of your held clench hand. It lies in the front and centre of your chest, behind and marginally to one side of your breastbone. It is a muscle that pumps blood to all parts of your body to give it the oxygen and supplements in necessities to work. Your heart has the privilege and left isolated by a divider. Each side has a little chamber called the chamber (articulated ay-tree-um), which leads into a huge pumping chamber called a ventricle (articulated even-tri-kl). There are 4 chambers: Right ventricle Right atrium Left ventricle Left atrium How to the heart works?…. ...
An electrical plug connector comprises a connection module having a plurality of contact elements for establishing an electrical connection to corresponding contact elements of a socket connector, and a terminal module having a plurality of terminal elements, each for connecting a conductor of a cable. The terminal module is adapted to be detachably connected to the connection module in order to establish an electrical connection between each of the terminal elements and a contact element. The connection module comprises a housing into which the terminal module can be inserted, and a strain relief which is connected to the housing and engages over the terminal module, wherein a cable connected to the terminal module is adapted to be fixed to the connection module by means of the strain relief.
This patent search tool allows you not only to search the PCT database of about 2 million International Applications but also the worldwide patent collections. This search facility features: flexible search syntax; automatic word stemming and relevance ranking; as well as graphical results.
The Best Western Hotel Atrium is a 3 star star hotel located in Arles and is perfect for a short break or a long weekend. Free Wifi available.
Book. The modern five-star Hotel Baltaci Atrium offers the highest level of the hotel service. In addition to luxury accommodation and catering are available also attractive premises of hotel, which provides the ideal rear for conferences, seminars, trainings, weddings or celebrations. ...
The red connections signify oxygenated blood and the blue connections signify deoxygenated blood. So deoxygenated blood is pumped from either the top or bottom of your body through your right atrium into your right ventricle from where it travels to the lungs to pick up oxygen. Once it has picked up oxygen from the capillaries in the alveoli it travels into your left atrium; through your left ventricle which transports it to the rest of your body where deoxygenated blood is picked up and the process starts all over again.. ...
LAntropologia -del grèc άνθρωπος (òme) e logos (conèissença)- es lestudi de lumanitat, e dels umans de totas las epòcas e totas las dimensions de lumanitat. Lo concèpte de cultura es fondamental en Antropologia. Se considèra que la cultura es un trach fondamental de la natura umana, e que lòme a la capacitat de concebre lo monde de manièra simbolica, daprendre e de transmetre de simbòls, e de transformar lo monde (e el meteis) en utilizant aquestes simbòls.. ...
TY - JOUR. T1 - Sarcoplasmic reticulum Ca2+ regulatory protein gene expression in human right atrium under hemodynamic overload. AU - Sadamatsu, Kenji. AU - Urabe, Yoshitoshi. AU - Tsutsui, Hiroyuki. AU - Tagawa, Hirofumi. AU - Maruoka, Fumio. AU - Igarashi-Saito, Keiko. AU - Takeda, Kotaro. AU - Kawachi, Yoshito. AU - Yasui, Hisataka. AU - Takeshita, Akira. PY - 1999/1/1. Y1 - 1999/1/1. N2 - Sarcoplasmic reticulum (SR) Ca2+-adenosine triphosphatase (ATPase) mRNA expression is reduced in the failing human myocardium. However, it is not known whether SR Ca2+-regulatory protein gene expression is altered in human myocardial tissue subjected to pressure overload or volume overload. We sought to determine whether SR Ca2+-regulatory protein gene expression is altered in human atrial tissue subjected to mechanical overload. We obtained right atrial myocardial tissue (about 250 mg) at open-heart surgery from three groups of patients: no hemodynamic overload to the right atrium (control group; 12 ...
TY - JOUR. T1 - Measurement of funny current (I(f)) channel mRNA in human atrial tissue. T2 - Correlation with left atrial filling pressure and atrial fibrillation. AU - Lai, Ling Ping. AU - Su, Ming Jai. AU - Lin, Jiunn Lee. AU - Tsai, Chang Her. AU - Lin, Fang Yue. AU - Chen, Yih Sharng. AU - Hwang, Juey Jen. AU - Stephen Huang, Shoei K.. AU - Tseng, Yung Zu. AU - Lien, Wen Pin. PY - 1999/1/1. Y1 - 1999/1/1. N2 - Introduction: The funny current (I(f)) contributes to phase IV spontaneous depolarization in cardiac pacemaker tissue. Enhanced I(f) activity in myocardial tissue may lead to increased automaticity and therefore tachyarrhythmia. We measured the amount of I(f) activity in the messenger ribonucleic acid (mRNA) in human atrial tissue and correlated the mRNA amount to left atrial filling pressure and atrial fibrillation (AF). Methods and Results: A total of 34 patients undergoing open heart surgery were included (15 men and 19 women, aged 55 ± 10 years). Atrial tissue was obtained from ...
Right atrial enlargement is less common, and harder to delineate on chest radiograph, than left atrial enlargement. Pathology Causes Enlargement of the right atrium can result from a number of conditions, including: raised right ventricular p...
Looking for atrial standstill? Find out information about atrial standstill. An interval in the cycle of a variable star during which its brightness remains nearly constant Explanation of atrial standstill
A fetal heart structure that is the bulging areas in the cardiac septum between the HEART ATRIA and the HEART VENTRICLES. During development, growth and fusion of endocardial cushions at midline forms the two atrioventricular canals, the sites for future TRICUSPID VALVE and BICUSPID VALVE ...
A fetal heart structure that is the bulging areas in the cardiac septum between the HEART ATRIA and the HEART VENTRICLES. During development, growth and fusion of endocardial cushions at midline forms the two atrioventricular canals, the sites for future TRICUSPID VALVE and BICUSPID VALVE.
The Perfect Storm: Pregnancy, Malignancy, and Embolic Complications-Multidisciplinary Approach to Right Atrial Mass in a Pregnant CML ...
TY - JOUR. T1 - NOX4-dependent hydrogen peroxide overproduction in human atrial fibrillation and HL-1 atrial cells. T2 - Relationship to hypertension. AU - Zhang, Jun. AU - Youn, Ji Youn. AU - Kim, Antony Y.. AU - Ramirez, Rafael J.. AU - Gao, Ling. AU - Ngo, Doan. AU - Chen, Peng. AU - Scovotti, Jennifer. AU - Mahajan, Aman. AU - Cai, Hua. PY - 2012/9/21. Y1 - 2012/9/21. N2 - Background/Objectives: Atrial fibrillation (AF) is the most common type of cardiac arrhythmia with patients dying frequently of stroke. In view of the unclear etiologies of AF and a potential role of oxidative stress, the present study examined cardiac reactive oxygen species production and NADPH oxidase (NOX) expression in AF patients. Methods and Results: Patients with AF were older than those without (58.8± 11.7 vs. 47.8±19.2, p = 0.047). Whereas total OZ.ast;~ production (determined by electron spin resonance) was similar in patients with and without AF, H2O2 production was more than doubled in AF patients (149.8 ...
Atrial fibrillation (AF) is already the most commonly occurring arrhythmia. Catheter pulmonary vein ablation has emerged as a treatment that is able to make the arrhythmia disappear; nevertheless, recurrence to arrhythmia is very frequent. In this study, it is proposed to perform an analysis of the electrical signals recorded from bipolar catheters at three locations, pulmonary veins and the right and left atria, before to and during the ablation procedure. Principal Component Analysis (PCA) was applied to reduce data dimension and Granger causality and divergence techniques were applied to analyse connectivity along the atria, in three main regions: pulmonary veins, left atrium (LA) and right atrium (RA). The results showed that, before the procedure, patients with recurrence in the arrhythmia had greater connectivity between atrial areas. Moreover, during the ablation procedure, in patients with recurrence in the arrhythmial both atria were more connected than in patients that maintained sinus rhythms
BioAssay record AID 88015 submitted by ChEMBL: Dissociation constant of H2 receptor antagonist activity against guinea pig atrium;NA means not active.
To obtain normal values for left atrial function noninvasively, volumes of the left atrium and ventricle were calculated in 52 volunteers by 2-dimensional echocardiography. A light pen digitizing and computation system, controlled by a microprocessor
p,Fibroblasts play a major role in heart physiology. They are at the origin of the extracellular matrix renewal and production of various paracrine and autocrine factors. In pathological conditions, fibroblasts proliferate, migrate and differentiate into myofibroblasts leading to cardiac fibrosis. This differentiated status is associated with changes in expression profile leading to neo-expression of proteins such as ionic channels. The present study investigates further electrophysiological changes associated with fibroblast differentiation focusing on the activity of voltage-gated sodium channels in human atrial fibroblasts and myofibroblasts. Using the patch clamp technique we show that human atrial myofibroblasts display a fast inward voltage gated sodium current with a density of 13.28 ± 2.88 pA pF(-1) whereas no current was detectable in non-differentiated fibroblasts. Quantitative RT-PCR reveals a large amount of transcripts encoding the Na(v)1.5 α-subunit with a fourfold increased ...
Some of the most common abnormal heart rhythms: - Atrial fibrillation or flutter atria (this is one of the most common cardiac arrhythmia, which accounts for about 10% of all supraventricular paroxysmal tachyarrhythmias Ono.is a frequent complication of surgery on open heart - mostly due to acute myocardial infarction THER causes atrial flutter -. pericarditis, chronic lung disease, rheumatic disease, thyrotoxicosis, sinus node dysfunction and other diseases that contribute to atrial dilation .repetanie atria may occur in patients of any age, however, from having heart disease it is more common atrial fibrillation or atrial fibrillation -.. is the most common heart rhythm disorder, is chaotic atrial rhythm when the atrial frequency waves can reach up to 350-600 beats per minute.If untreated, the frequency of ventricular contractions - 100-180 beats per minute.It characterized by disorganized electrical processes in the myocardium of the atria.Chaotic, asynchronous stimulation can cover ...
In patients with MS, several studies have demonstrated that LA enlargement is a marker of increased thromboembolic risk (4,6,7,9,11,25,26). However, the great majority of studies considered LA size or volume as an indicator of risk. This study aimed to look specifically at LA shape and not just LAVs and LA function in predicting stroke. As LA dilation may not occur in a uniform fashion, LA shape might be a better measure of the pattern of LA remodeling and a better predictor of embolic risk than absolute LAV.. The results of this study show that the atrial shape adds incremental value in predicting embolic events. Additionally, in agreement with a recently published study (27), we found that LA reservoir function was also associated with an increased risk for ECE. Although the LA has 3 major roles that affect LV filling, its reservoir function represents the most important component of the LA function in MS. LA contractile force cannot overcome the mechanical obstruction across the valve and ...
Above the ventricles are smaller chambers (sections) of the heart called atria. They contract (squeeze) during the last part of diastole, and send blood down to the larger, lower ventricles. The atria have valves that close after this so blood cannot flow backward into the atria. When the ventricles are filled and the valves to the atria are closed, the ventricles contract. So, the atria and ventricles contract in sequence. The left and right atria feed blood into the ventricles. Then, the left and right ventricles contract. The right ventricle pumps blood to the lungs, and the left ventricle pumps blood to the rest of the body. This is why we have a pulse. ...
The aim of the study is to compare levels of differnts types of microparticles circulating before and after percutaneous occluding of the left atrium by patients with atrial fibrillation and patients control.. Hypothesis is that prothesis implantation will decrease levels of microparticles circulating in blood circulation because of occluding of the left atrium . ...
This is a fascinating case, Dr. Smith, and your explication of the essential features is as usual brilliant. Thanks. The patient does seem to also have left atrial enlargement, probably a result of mitral valve disease (stenotic, severely regurgitant, or mixed); this is evidenced by p mitrale - seen in all the limb and augmented limb leads - and the biphasic and terminal negative p wave in V1. There is no evidence of AF in this ECG. Interestingly the PR interval appears a touch short to my eye in some of the leads, especially the lateral precordials. Is that a delta wave in V2? I wonder if the LA enlargement was related to the STEMI. Did he have any visible thrombi in the LA? ReplyDelete ...
What do I mean when I say, "rapidly conducting AF?". Explaining AF in a short blog is impossible. Massively thick books have been written, and week long symposium are routinely given on AF . That said, here is my best impression of Sal Khan, who can explain nearly anything in a 10 min video.. When in AF, the atria are beating (quivering) at 300-500 beats per min. The atria do not pump blood to the body; the ventricle accomplishes this. Ventricular rate (pulse rate) is determined by how fast the AV node conducts the AF impulses from north to south. The AV node acts as a road between the atria and ventricle. It has a certain refractory period which means it can conduct electrical impulses only so fast. The AV nodes speed of conduction varies greatly amongst individuals, and thus, so does the ventricular rate during AF. The inter-person variability of AV conduction is probably in great part genetically determined, whereas the intra-person variability is related to adrenaline levels. The AV node is ...
The E/A ratio is a marker of the function of the left ventricle of the heart. It represents the ratio of peak velocity flow in early diastole (the E wave) to peak velocity flow in late diastole caused by atrial contraction (the A wave). It is calculated using Doppler echocardiography, an ultrasound-based cardiac imaging modality. Abnormalities in the E/A ratio suggest that the left ventricle, which pumps blood into the circulation, cannot fill with blood properly in the period between contractions. This phenomenon is referred to as diastolic dysfunction and can eventually lead to the symptoms of heart failure. The heart is a biological pump designed to move blood through the brain and body. It has four chambers: two "upper" chambers, the atria (single:atrium), and two "lower" chambers (the ventricles). Anatomically, the atria sit more posterior to the ventricles, but for ease of understanding, are often drawn "above" them. The atria are separated from the ventricles beneath by the ...
Patient is in what is known as atrial fibrillation, or afib.. Atrial fibrillation is caused by the rapid, disorganized electrical signals that cause the atria to fibrillate, or, contract fast and irregularly. Rather than a signal coming from that of the SA node, the signal comes from the left atrium at sites of the pulmonary veins. This is a problem because the ventricles do not contract as fast as the atria do and this causes decreased blood flow into the ventricles and causes decreased cardiac output systemically. Patients with afib, due to the rapid rate at which the atrium contracts, tend to have blood pool in their atria. This is a dire problem because the patient becomes susceptible to clots which in turn can lead to a stroke.. There are several types of afib:. Paroxysmal: faulty signal types start and stop on their own. Typically last less than one week but usually resolve more so in 24-48 hours.. Persistent: Abnormal rhythm lasts more than a week but eventually stops on its own or with ...
ANATOMY AND PHYSIOLOGY Chronic Kidney Disease Cardiovascular System The cardiovascular system is sometimes called the circulatory system. It consists of the heart, which is a muscular pumping device, and a closed system of vessels called arteries, veins, and capillaries. As the name implies, blood contained in the circulatory system is pumped by the heart around a closed circuit of vessels as it passes again and again through the various "circulations" of the body. The Heart * The heart is enclosed by a sac known as the pericardium. There are three layers of tissues that form the heart wall. The outer layer of the heart wall is the epicardium, the middle layer is the myocardium, and the inner layer is the endocardium. The internal cavity of the heart is divided into four chambers: * Right atrium * Right ventricle * Left atrium * Left ventricle * The two atria are thin-walled chambers that receive blood from the veins. The two ventricles are thick-walled chambers that forcefully pump blood out of ...
BioAssay record AID 467401 submitted by ChEMBL: Negative chronotropic activity in guinea pig right atrium assessed as decrease in atrial rate at 50 uM relative to control.
Atrial fibrillation (AF), defined by disorganized atrial cardiac rhythm, is the most prevalent cardiac arrhythmia worldwide. Recent genetic studies have highlighted a major heritable component and identified numerous loci associated with AF risk, including the cardiogenic transcription factor genes TBX5, GATA4, and NKX2-5. We report that Tbx5 and Gata4 interact with opposite signs for atrial rhythm controls compared with cardiac development. Using mouse genetics, we found that AF pathophysiology caused by Tbx5 haploinsufficiency, including atrial arrhythmia susceptibility, prolonged action potential duration, and ectopic cardiomyocyte depolarizations, were all rescued by Gata4 haploinsufficiency. In contrast, Nkx2-5 haploinsufficiency showed no combinatorial effect. The molecular basis of the TBX5/GATA4 interaction included normalization of intra-cardiomyocyte calcium flux and expression of calcium channel genes Atp2a2 and Ryr2. Furthermore, GATA4 and TBX5 showed antagonistic interactions on an ...
Atrial fibrillation is an abnormal heart rhythm characterized by rapid and irregular activation of the upper chambers of the heart. Atrial fibrillation often shows a natural progression towards longer and more frequently occurring episodes and often occurs in patients with existing heart disease(s). Because atrial fibrillation is highly complex and evolves over time, it is very difficult and expensive to study comprehensively in experiments or in the clinic.. Predictive multiscale computational modeling has the potential to fill this research void. We have incorporated many aspects of atrial fibrillation to model some of its various disease states. Our computational model consists of millions of virtual atrial cells coupled together to form a realistic three-dimensional atrial anatomy. Simulations of this model show that disease-like modifications to cellular processes, as well as to the coupling between cells, perpetuate simulated atrial fibrillation by accelerating the rhythm and/or increasing ...
Press Release issued Sep 10, 2013: Atrial fibrillation (AF) is characterized by irregular and often rapid heart rate responsible for poor blood flow to the body and is one of the most common types of arrhythmia. It occurs in cases where the -hearts electrical signals cause the atria to fibrillate, i.e. contract irregularly and very fast. The risk of developing atrial fibrillation usually occurs in the geriatric population and its risk is high in patients with mitral valve diseases, coronary heart disorder, congenital heart disease, cardiomyopathy, etc. Atrial fibrillation is also characterized by collection of blood in the atria and as a result there is absence of synchronization between the upper and lower chambers of the heart thereby increasing the risk of stroke.
Atrial fibrillation (commonly referred to as "afib" is a chaotic electrical circuit that occurs in the top two chambers of the heart called the atria. Healthy atria contracts 60-80 times per minute but atria in afib quiver at 300-400 times per minute. Essentially the heart of an afib patient works as if its enduring a marathon even if the patient is relaxing. As you can imagine, this can cause extreme fatigue as well as feelings such as "flopping" or "pounding" in the chest.. The most devastating result of afib is a stroke. The quivering atria can lead to slow blood flow and clot formation which can eventually go to the brain.. Risk factor modification, prevention of stroke, and treatment of symptoms are all addressed in our afib clinic.. Learn More About Atrial Fibrillation. ...
Im 64 and have had lone atrial fibrillation for about a decade. My doctor wants me to take a blood thinner, but Id rather not do this. Should I follow…
Atria Senior Living is a leading operator of independent living, assisted living, supportive living, and memory care communities in 190 locations in 27 states and seven Canadian provinces. We are the residence of choice for more than 21,000 seniors, and the workplace of choice for more than 14,600 employees. We create vibrant communities where older adults can thrive and participate, know that their contributions are valued, and enjoy access to opportunities and support that help them continue making a difference in our world. Atria is an equal opportunity employer. Atria provides equal employment opportunities to all employees and applicants for employment without regard to race, color, religion, gender, sexual orientation, age, national origin, disability, veteran status, or any other classification protected by applicable law. Atria also does not condone or tolerate an atmosphere of intimidation or harassment based on these protected classifications. We require the cooperation of all ...
The function of the right side of the heart (see right heart) is to collect de-oxygenated blood, in the right atrium, from the body and pump it, via the right ventricle, into the lungs (pulmonary circulation) so that carbon dioxide can be dropped off and oxygen picked up (gas exchange). This happens through a passive process called diffusion. The left side (see left heart) collects oxygenated blood from the lungs into the left atrium. From the left atrium the blood moves to the left ventricle which pumps it out to the body. On both sides, the lower ventricles are thicker and stronger than the upper atria. The muscle wall surrounding the left ventricle is thicker than the wall surrounding the right ventricle due to the higher force needed to pump the blood through the systemic circulation. Starting in the right atrium, the blood flows through the tricuspid valve to the right ventricle. Here it is pumped out the pulmonary semilunar valve and travels through the pulmonary artery to the lungs. From ...
The function of the right side of the heart (see right heart) is to collect de-oxygenated blood, in the right atrium, from the body and pump it, via the right ventricle, into the lungs (pulmonary circulation) so that carbon dioxide can be dropped off and oxygen picked up (gas exchange). This happens through a passive process called diffusion. The left side (see left heart) collects oxygenated blood from the lungs into the left atrium. From the left atrium the blood moves to the left ventricle which pumps it out to the body. On both sides, the lower ventricles are thicker and stronger than the upper atria. The muscle wall surrounding the left ventricle is thicker than the wall surrounding the right ventricle due to the higher force needed to pump the blood through the systemic circulation. Starting in the right atrium, the blood flows through the tricuspid valve to the right ventricle. Here it is pumped out the pulmonary semilunar valve and travels through the pulmonary artery to the lungs. From ...
Elevation or depression of the PTa segment (the part between the p wave and the beginning of the QRS complex) can result from atrial infarction or pericarditis. If the p-wave is enlarged, the atria are enlarged. If the P wave is inverted, it is most likely an ectopic atrial rhythm not originating from the sinus node. ...
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Its 2018 and as I get older, Im starting to veer towards the conclusion that people are becoming desensitized to gratitude. As a whole, were becoming less thankful for the things we have and were always striving to have more. I dont see goals and dreams as a bad thing but if we cant be content with the beautiful things currently in our lives, how can we be content with lovely things, that are yet to come?. Last year, my brother, a London based, commercial finance consultant, was diagnosed with an extremely rare, congenital heart defect called Cor Tritriatum. The congenital heart condition accounts for an incredibly small percentage of the population in the United States and equates to 0.1-0.4%, of infants with congenital heart diseases.. To summarize it briefly, the human heart is divided into four chambers and two of those, are the atria. The two atria are separated from one another by a fibro-muscular wall of tissue, called the atrial septum. The ventricles are the other two chambers of ...
What Is Atrial Fibrillation? Atrial fibrillation is a heart rhythm disorder that causes a rapid and irregular heartbeat. The heart is a muscle that has four chambers through which blood flows. The two upper chambers are the atria. The two lower chambers are the ventricles. Atrial fibrillation affects the atria. Normally, the muscular walls of … Continue reading. ...
Atrial fibrillation is the most common heart rhythm disturbance.1 It is a serious, but very treatable heart condition. Many people have Atrial Fibrillation (called AFib or AF) but dont even realize it. If left untreated, the effects of AFib can be life threatening. To help improve public education and awareness, Congress passed two resolutions beginning in 2009, designating September as Atrial Fibrillation Awareness Month. The purpose is to educate more people about this condition and to help prevent the potentially devastating consequences if left unrecognized and untreated.. In AFib, there is a problem with the electrical system in the atria causing the heart to pump irregularly. This problem can cause the top chambers to quiver or jiggle, which is described as an irregular heartbeat or arrhythmia. When the heart doesnt pump normally, it causes blood to sit in the top chambers of the heart longer than it should. Blood sitting can lead to blood clots, stroke, heart failure and other ...
The heart consists of a specialised cardiac muscle with its blood supply and nerve supply, bound by a sheet of connective tissue.. The cardiac muscles surrounds four chambers, two atriums and two larger ventircles. On each side of the heart there is a upper atria and lower ventricle. Tendons bring blood to the atria and veins carry blood away from the ventricles.. The muscluar wall of the atria is thinner than the walls of the ventricles. The wall of the left ventricle is thicker than the wall of the right ventricle.. Deoxygenated blood returns to the body in two main veins, the superior and inferior vena cava. These veins carry blood to the right atrium, from where it flows into the right venticle to be pumped into the lungs via arteries.. Once oxygenated in the lungs, the blood returns to the heart through the pulmonary vein. The blood enters the left atrium, flows into the left ventricle and is pumped out of the heart via the aorta.. ...
A leader in Calgarys senior care sector, Bethany has over seventy years of experience and established dementia care expertise. With a need for developing dementia care in Calgary, Bethany has partnered with Rotary to create The Atrium.. The Rotary Bethany Atrium, a year-round indoor green space, will provide an area for Bethany residents, family, staff, volunteers, community visitors and Rotarians to gather and engage with each other. The Atrium will be one of the main features at Bethany Riverview, located in the heart of Calgarys newest dementia care facility. ...
Simultaneous left and right atrial surface electrograms were obtained from the right and left atria of 30 chick embryos. These were divided into 3 equal groups that were studied at 15 to 16, 10 to 11, and 5 to 7 days of incubation. The embryos were removed from the shell with their circulation intact and temperature maintained constant. In an early stage of development (5 to 6 days), the left atrium and its appendage were larger than the right, and left preceded right atrial depolarization. At and after 7 days of incubation, the right atrium and its appendage were larger than the left, and right preceded left atrial depolarization. The intervals for interatrial conduction and for atrio-ventricular conduction were about the same at all stages of development. Since the length and width of the heart at 15 to 16 days of incubation were about 3 times those of a heart at 5 to 7 days of incubation, it is proposed that the higher the stage of development of the chick embryo the greater must be the ...
ATRIUM is a C++ program that performs case-control association testing between a binary trait and an untyped SNP, based on genotype data from multiple typed SNPs that are in linkage disequilibrium with the untyped SNP, where information on the joint distribution of typed and untyped SNPs is obtained from an external reference panel. A special feature of ATRIUM is that both related and unrelated individuals can be included in the case-control sample. The user specifies a set of untyped SNPs on which external reference panel information is available, and the ATRIUM program computes a test statistic for association with each untyped SNP in the set. This test is suitable for case-control analysis in any outbred sample with related and/or unrelated individuals, including large pedigrees, provided that the relationships are known ...
The upper right chamber of the [[heart]]. The left atrium receives oxygenated [[blood]] from the [[lung]]s and pumps it down into the left ventricle which delivers it to the body. See also: [[Right Atrium]] [[Right ventricle ...
Treatment of atrial fibrillation is complex and depends on factors such as whether the patient is currently experiencing symptoms, how long the patient has been in atrial fibrillation, the overall health of the patient, and the size and function of the hearts chambers.
... (also known as AFib or AF) is the most common type of arrhythmia when the heart can beat too fast, too slow, or with an irregular rhythm. In a normal heart, the four chambers of the heart beat in a steady, rhythmic pattern. With AFib , the atria (upper chambers of the heart) fibrillate (contract very fast and irregularly - quiver or twitch quickly) and create an irregular rhythm. About 15-20 % of people who have strokes have this heart arrhythmia, and 10% have a heart attack, but prognostic influence is disputed and only 33% of AF patients think atrial fibrillation is a serious condition. ...
Obesity is a major risk factor for left atrial enlargement, which increases the risk of atrial fibrillation, stroke and death, a new study shows.
Chest x-ray of an elderly female patient with a previous mitral valve replacement demonstrates a calcified large left atrium. This patient presumably had mitral valve incompetence.