• This study was divided into two phases, the first of which was designed to provide an age-appropriate set of normal diastolic Doppler echocardiographic data for children and adolescents and the second of which was to determine whether these Doppler techniques could be used to identify children with increased ventricular end-diastolic pressure (EDP). (nih.gov)
  • Complete echocardiographic studies focusing on Doppler variables of diastolic ventricular function were performed on 223 normal children. (nih.gov)
  • Reliable non-invasive evaluation of pulmonary pressure at present is still a problem as echocardiographic measurement of pulmonary hypertension relies on the presence of tricuspid regurgitation (TR). (banglajol.info)
  • The relationship between echocardiographic indicators of acute and chronic left ventricular (LV) filling pressure and LV dilation after acute myocardial infarction was assessed in 47 patients. (elsevierpure.com)
  • There have been no reports concerning postexercise systolic blood pressure (SBP) response in patients with ultrasound echocardiographic (UCG) LV hypertrophy and CAD. (umn.edu)
  • At rest, there were no differences in LV pressure and echocardiographic parameters between groups. (ewha.ac.kr)
  • Echocardiographic data, including the right ventricular end-diastolic diameter (RVEDD), were available for all patients. (cdc.gov)
  • Atrial premature complexes (APC), ventricular premature complexes (VPC), and supraventricular tachyarrhythmias are more prevalent than ventricular tachycardia, especially in women without structural heart disease. (hindawi.com)
  • Asystole, ventricular tachycardia (VT), ventricular fibrillation (VF), and pulseless electrical activity are the underlying rhythm disturbances in the pediatric age group. (thieme-connect.de)
  • Cardiac monitoring in the bay revealed ventricular tachycardia (a heart rhythm incompatible with life), and cardiopulmonary resuscitation (CPR) and advanced life support (ALS) were begun. (cdc.gov)
  • Adrenaline raises the systolic pressure and the heart rate, causing excitatory movements in the myocardium, palpitations and tachycardia, but these symptoms are transitory and not serious 29 . (bvsalud.org)
  • Background: Although exercise-induced electrocardiographic ST segment changes are used to detect coronary artery disease (CAD), their diagnostic value is markedly decreased in patients with left ventricular (LV) hypertrophy. (umn.edu)
  • Natriuretic peptide signaling has been implicated in a broad range of physiological processes, regulating blood volume and pressure, ventricular hypertrophy, fat metabolism, and long bone growth. (gene-tools.com)
  • The purpose of this study is to elucidate the effects of treprostinil on right ventricular systolic pressure (RVSP), right ventricular hypertrophy and vascular remodeling in a rat model of MCT-induced pulmonary hypertension. (umsystem.edu)
  • As expected, MCT exposure caused a significant increase in RVSP and right ventricular hypertrophy. (umsystem.edu)
  • Neither low-dose (10 ng/kg/min) nor high-dose (150 ng/kg/min) treprostinil therapy attenuated elevations of RVSP and right ventricular hypertrophy in pulmonary hypertensive rats. (umsystem.edu)
  • In conclusion, we demonstrated that increases in RVSP, right ventricular hypertrophy and vascular remodeling associated with MCT-induced pulmonary hypertension are not attenuated with treprostinil therapy. (umsystem.edu)
  • Pulmonary arterial hypertension (PAH) is a lethal vasculopathy characterized by pathogenic remodeling of pulmonary arterioles leading to increased pulmonary pressures, right ventricular hypertrophy, and heart failure. (biomedcentral.com)
  • Excess dietary intake of sodium increases blood pressure (1) and can increase the risk of cardiovascular disease, renal disease, gastric cancer, osteoporosis, and left ventricular hypertrophy (2,3). (cdc.gov)
  • 25.3 had evidence of left ventricular hypertrophy and 26.5 had various ventricular arrhythmias.Conclusion: Adult Nigerians presenting with hypertension for the first time have significant rhythm and structural abnormalities that should influence their clinical management and drug treatment choice. (bvsalud.org)
  • Three months after surgery, a CT scan revealed reduction of cerebral ventricular size. (unboundmedicine.com)
  • Hydrocephalus is accumulation of excessive amounts of cerebrospinal fluid, causing cerebral ventricular enlargement and/or increased intracranial pressure. (msdmanuals.com)
  • Materiales y método: revisión integradora de la literatura con búsqueda en las bases de datos LILACS, PubMed, Scopus, Web of Science, Cinahal y Google Académico, del 2013 al 2018. (bvsalud.org)
  • Likewise, models with longitudinally aligned fiber orientation required a lesser contractility for maintaining a target RVEF against elevated pressures. (johnshopkins.edu)
  • In addition to increased wall thickness and material stiffness (diastolic compensation), systolic mechanisms in the forms of myocardial fiber realignment and changes in contractility are likely involved in the overall compensatory responses to pressure overload. (johnshopkins.edu)
  • Important mechanisms to adapt to an increase in pressure include increased muscle mass and enhanced intrinsic myocyte contractility. (ersjournals.com)
  • the steeper the gradient the greater the ventricular contractility. (bmj.com)
  • It blocks the hyperpolarization-activated cyclic nucleotide-gated (HCN) channel responsible for the cardiac pacemaker I(f) 'funny' current, which regulates heart rate without any effect on ventricular repolarization or myocardial contractility. (medscape.com)
  • The main exposures were systolic and diastolic blood pressure (BP), pulse pressure, arterial stiffness by pulse wave velocity (PWV), volume status estimated by pulmonary pressures using echocardiogram and intradialytic weight gain. (johnshopkins.edu)
  • Liver stiffness measured by two-dimensional shear-wave elastography predicts hepatic vein pressure gradient at high values in liver transplant candidates with advanced liver cirrhosis. (amedeo.com)
  • Right ventricular (RV) diastolic stiffness is increased in pulmonary arterial hypertension (PAH) patients. (ersjournals.com)
  • They had their systolic and diastolic blood pressures measured at four different times: preoperative (M1), post-anesthesia (M2), post-extraction (M3) and at the end, after the suture (M4), with the aid of a digital tensiometer. (bvsalud.org)
  • Following treatment, blood pressure increased, and left ventricular ejection fraction decreased. (nih.gov)
  • The EF of the left heart, known as the left ventricular ejection fraction (LVEF), is calculated by dividing the volume of blood pumped from the left ventricle per beat (stroke volume) by the volume of blood collected in the left ventricle at the end of diastolic filling (end-diastolic volume). (wikipedia.org)
  • The EF of the right heart, or right ventricular ejection fraction (RVEF), is a measure of the efficiency of pumping into the pulmonary circulation. (wikipedia.org)
  • A heart which cannot pump sufficient blood to meet the body's requirements (i.e., heart failure) will often, but not invariably, have a reduced ventricular ejection fraction. (wikipedia.org)
  • Left ventricular (LV) diastolic dysfunction is known as an early marker of myocardial alterations in patients with diabetes. (biomedcentral.com)
  • However, a subset of patients do not improve, in which we suggest that concealed left ventricular dysfunction may play a causative role. (lu.se)
  • Oxidative stress and mitochondrial dysfunction are important mechanisms of ventricular remodeling, predisposed to the development of diabetic cardiomyopathy (DCM) in type 2 diabetes mellitus. (mdpi.com)
  • The disease is characterized by pulmonary vascular endothelial dysfunction and proliferative remodeling giving rise to increased pulmonary artery pressures and pulmonary vascular resistance. (biomedcentral.com)
  • Conversely, if the indication is prevention or treatment of left-ventricular dysfunction, a diuretic based regimen should be used, again irrespective of body size. (medicalxpress.com)
  • Results -Changes in urine flow, heart rate, mean arterial pressure, or peak positive and negative rate of change in ventricular pressure were not apparent. (avma.org)
  • Mean arterial pressure (MAP) and left ventricular volume were markedly decreased by candesartan cilexetil, however, simultaneous treatment with PD123319 had no additional effect on either parameter. (monash.edu)
  • Also, this case highlights the importance of close vigilance of arterial pressure tracings of patients with bigeminy PVCs which develop after SCA and should not be accepted as normal. (thieme-connect.de)
  • 3rd) Fuzzy system that has as input variables: heart rate (HR), mean arterial pressure (MAP), minimum pump flow, level of activity (patient) and medical condition (data from physician). (usp.br)
  • At baseline, the mean 6-minute walk distance was 401 meters, mean pulmonary arterial pressure was 53.9 mm Hg, mean pulmonary vascular resistance was 10.9 Wood units, and mean N-terminal pro-brain natriuretic peptide (NT-proBNP) level was 2345 pg/mL. (medscape.com)
  • Mean pulmonary arterial pressure at 6 months was -7.8 mm Hg vs -3.5 mm Hg, respectively. (medscape.com)
  • The useful work done by the left ventricle is the generation of pressure and flow within the circulation. (bmj.com)
  • Attempts to describe the contractile performance in the intact left ventricle in vivo extrapolate these relations, substituting intracavity pressure for tension and volume change for length change. (bmj.com)
  • Results: Each systolic, diastolic blood, and pulse pressure measurement was significantly associated with LVMI by linear regression regardless of dialysis unit BP or non-dialysis day BP measurements. (johnshopkins.edu)
  • mean systolic blood pressure was 192.78+38.4mmHg and the mean diastolic blood pressure was 116.6+16.9mmHg. (bvsalud.org)
  • Concerning the diastolic blood pressure measurement, there were statistical differences among all times except between M1xM4 and M2xM3. (bvsalud.org)
  • Our group recently reported exposure to PEPs induces adverse cardiovascular responses including hypertension and arrythmia via monitoring left ventricular pressure and electrocardiogram in rats. (cdc.gov)
  • Left Ventricular Assist Devices (LVAD) have been used to treat patients with heart failure (HF) as a Bridge to Transplantation or as Destination Therapy. (usp.br)
  • We searched on Pubmed for ventricular premature complexes (VPC) in pregnant women and found no case reporting increased incidence of this arrhythmia while supine. (hindawi.com)
  • Heart rate (a) and ventricular premature complexes (b) during 24-hour Holter monitoring. (hindawi.com)
  • Intriguingly, therapy-resistance bigeminy with premature ventricular contractions (PVCs) continued despite all these treatments. (thieme-connect.de)
  • Pressure overload is the most common etiology of RVF, but our understanding of the tissue structure remodeling and other biomechanical factors involved in RVF is limited. (johnshopkins.edu)
  • In this computational study, we hypothesized that, with other variables constant, fiber orientation alteration provides a quantifiable and distinct compensatory mechanism during RV pressure overload (RVPO). (johnshopkins.edu)
  • Numerical models were constructed using a rabbit model of chronic pressure overload RVF based on intraventricular pressure measurements, CINE magnetic resonance imaging (MRI), and diffusion tensor MRI (DT-MRI). (johnshopkins.edu)
  • This effect was more pronounced in response to pressure overload. (johnshopkins.edu)
  • Transient activation of AMPK preceding left ventricular pressure overload reduces adverse remodeling and preserves left ventricular function. (dataemia.com)
  • Loss of steroid receptor coactivator-2 (SRC-2) results in a reversal to the fetal gene program and disrupts the response to pressure overload, accompanied by prominent effects on metabolism and growth signaling, including increased AMPK activation. (dataemia.com)
  • The assessment of pulmonary artery pressure is important in clinical management and prognostic evaluation of patients with cardiovascular and pulmonary disease. (banglajol.info)
  • Abstract Background: Higher left ventricular mass (LV) strongly predicts cardiovascular mortality in hemodialysis patients. (johnshopkins.edu)
  • Evidence suggests that reducing the population's intake of sodium can enhance blood pressure control and reduce preventable cardiovascular events (2,6,7). (cdc.gov)
  • This paper investigates a data assimilation approach for non-invasive quantification of intracranial pressure from partial displacement data, acquired through magnetic resonance elastography. (wias-berlin.de)
  • This study aims to demonstrate the application of dual intracranial pressure (ICP) and infusion studies together with the novel shunt occlusion test in both a diagnostic and therapeutic role. (karger.com)
  • Hydrocephalus that develops only after the fontanelles have closed does not increase head circumference or cause the fontanelles to bulge but can markedly and rapidly increase intracranial pressure. (msdmanuals.com)
  • Conclusions: intracranial hypertension is an event of great clinical impact, whose complications can be minimized and control through specific Nursing interventions that encompass control of neuro- physiological and hemodynamic parameters and prevention of increased intracranial pressure related with the performance of procedures by the Nursing staff. (bvsalud.org)
  • The time varying elastance model of ventricular function 2 has been an advance, describing ventricular contractile performance in terms of the relations between pressure and volume during the cardiac cycle. (bmj.com)
  • This model defines the elastance of the ventricle at any instant in the cycle as the instantaneous pressure divided by volume. (bmj.com)
  • The elastance is greatest at the end of ventricular ejection and in a pure sense can be taken to define end systole. (bmj.com)
  • Under different loading conditions values of maximal elastance form a straight line on a graph of pressure as a function of volume, and the gradient of this relation (E max) is interpreted as a load independent measure of contractile function. (bmj.com)
  • A useful approximation, however, is to derive an arterial elastance (Ea) which is simply systolic pressure divided by the volume accommodated during a single ejection (the ventricular stroke volume). (bmj.com)
  • 3 One of the successes of the elastance model of ventricular function is the description of ventricular systolic function and the ventricular afterload in the same terms. (bmj.com)
  • The ratio between arterial and ventricular elastance is interpreted as an index of the coupling between the ventricle and its afterload, and an increase in this ratio is associated with increased efficiency of this coupling. (bmj.com)
  • The fluid dynamic characteristics of the arterial tree-the left ventricular afterload-are impossibly complex to describe mathematically. (bmj.com)
  • Objective: The purpose of this study was to determine whether right ventricular end diastolic diameter can predict the presence of pulmonary hypertension. (banglajol.info)
  • RESUMO A hidrocefalia é definida como a dilatação ventricular pelo aumento da pressão intraventricular e intracraniana quando não tratada ou por insucesso do tratamento. (bvsalud.org)
  • Methods and results A total of 21 patients (59 ± 10 years) underwent invasive LV pressure measurements and simultaneous echocardiography at rest and during submaximal supine bicycle exercise. (ewha.ac.kr)
  • There are many technical problems in the measurement of simultaneous ventricular pressure and volume in human subjects. (bmj.com)
  • a measure of ventricular contractile function) in PAH patients [ 1 - 6 ]. (ersjournals.com)
  • Indices of contractile function have thus been described from analysis of pressure-time relations (dp/dt max), or dimension-time relations (Vmax). (bmj.com)
  • However, the uniform observation that partial left ventriculotomy was associated with an increase in the value does suggest something about the overall effect of the procedure on ventricular contractile function. (bmj.com)
  • Efficacy of a polyphenolic supplement to reduce blood pressure in patients with Metabolic syndrome. (utah.edu)
  • 0.0001) in a model that included age, gender, body mass index, body surface area, blood pressure levels, and left ventricular mass index as confounding variables. (researchgate.net)
  • At rest, blood pressure was 128/74 mmHg and heart rate was 90 bpm. (hindawi.com)
  • The patient did not have adequate blood pressure measured by invasive arterial blood pressure monitoring while having bigeminy PVCs. (thieme-connect.de)
  • According to new research published Online First in the Lancet, body mass index may influence which blood pressure medications work best at reducing the major complications of high blood pressure (strokes, heart attacks, and death). (medicalxpress.com)
  • These findings could change the way high blood pressure (hypertension) is treated and should be of practical help to clinicians in selecting the type of combination treatment most likely to benefit individual patients", says Michael Weber from the State University of New York's Downstate Medical Center who led the research. (medicalxpress.com)
  • Weber and colleagues conducted a subanalysis of the international ACCOMPLISH trial that compared the impact of two single-pill drug combinations -benazepril ( ACE inhibitor ) plus the diuretic hydrochlorothiazide, and benazepril plus amlodipine ( calcium channel blocker )- on the long-term health of people with high blood pressure at high risk of heart disease. (medicalxpress.com)
  • These agents are used in heart failure to reduce heart rate and blood pressure. (medscape.com)
  • UNLABELLED: The aim of this study is to analyse the acute effect of water-pipe smoking on heart rate, blood pressure and the baroreflex control of heart rate. (who.int)
  • The Captain was never able to sustain a viable heart rhythm, pulse, or blood pressure despite the placement of a pacemaker and an intra-aortic balloon pump and extensive use of cardiac resuscitation medications. (cdc.gov)
  • Because of these reasons, they trigger a series of modifications that lead to changes in blood pressure and stress occurrences. (bvsalud.org)
  • This study aimed to monitor changes in blood pressure pre-, trans-, and postoperatively and assess whether the differences would be significant. (bvsalud.org)
  • There were statistically significant differences between systolic blood pressure changes among all times, except between M1 and M4. (bvsalud.org)
  • There were changes in blood pressure between different moments of extractions. (bvsalud.org)
  • Blood pressure (BP) is understood as that within arteries with communication to the walls. (bvsalud.org)
  • The current dental surgeries have a close relationship with blood pressure changes, since patients potentially correlate dental treatment with pain 4 , resulting in fear 24 , anxiety and stress, which is a body response to negative 27 and/or stress 19,22,26 stimuli many times imperceptible to the dentist. (bvsalud.org)
  • Consequently, one of the most evident effects in modifying the physiologic balance is the blood pressure change, resulting from the stress due to dental procedure 9 . (bvsalud.org)
  • It is also possible to cite "white coat hypertension", a condition of blood pressure change only noted in clinical practice, where the patient is anxious and stressed waiting to be seen by either the dentist or the doctor, but it is within normal range during other daily situations 16 . (bvsalud.org)
  • These vasoconstrictor drugs have been associated with anesthetic salts and have directly acted on the system of blood vessels of the area anesthetized, resulting in the vasoconstriction as main effect, but exerting a side effect on blood pressure and/or heart rate 3 , in addition to the pain and anxiety during anesthetic application 18 . (bvsalud.org)
  • Background :The aim of this study was to validate whether pulmonary capillary wedge pressure estimated using transoesophageal echocardiography in anaesthetised patients receiving mechanical ventilation can be comparable to gold standard method of estimating PCWP by using pulmonary artery catheter. (amrita.edu)
  • CFR was associated with LV filling pressure in patients with type 2 diabetes. (biomedcentral.com)
  • Therefore, we hypothesized that the microstructure of the CST in iNPH patients is altered by mechanical pressure resulting from ventricular enlargement. (ajnr.org)
  • Abstract Clinical research in the treatment of patients with congenital heart disease (CHD) is limited by the wide variety of CHD manifestations and therapeutic options as well as the generally low incidence of CHD. (techscience.com)
  • NYHA deteriorated in 9 patients, despite reduced right ventricular size. (lu.se)
  • Animal experiments have demonstrated that even a peak inspiratory pressure >30-40 cm H2O may cause pulmonary interstitial edema, elevated vascular permeability and inflammation, a picture that resembles acute lung injury (ALI) or its more severe form, acute respiratory distress syndrome (ARDS) [2]. (medscimonit.com)
  • In pulmonary arterial hypertension (PAH), pulmonary vascular remodelling leads to a typical fourfold increase in pulmonary artery pressure. (ersjournals.com)
  • ABSTRACT Orbital apex is a region involving bone, vascular and neural structures. (bvsalud.org)
  • Any intracardiac communication that allows high pulmonary blood flow will lead, over time, to irreversible pulmonary vascular injury, increased pulmonary artery pressures and, ultimately, to right-to-left intracardiac blood flow. (medscape.com)
  • Results from the normal group were then compared with Doppler values observed in a group of 24 children with catheterization-substantiated increases in ventricular EDP. (nih.gov)
  • Although PH can be detected invasively by right ventricular (RV) catheterization, accurate non-invasive assessment by echocardiography has many advantages. (banglajol.info)
  • In 1952, Bing and colleagues used a minor modification of Nylin's suggestion (EDV/SV) to assess right ventricular function using a dye dilution technique. (wikipedia.org)
  • Cardiac function improved to a greater degree in the PADN than in the sham group, including right atrial pressure (-1.7 mm Hg vs 0.4 mm Hg) and right ventricular fractional area change (10.4% vs -0.6%) but, particularly, tricuspid annular plane systolic excursion (4.3 mm vs -0.1 mm) and right ventricular global longitudinal strain (-2.9% vs -0.1%,), Chen observed. (medscape.com)
  • Heart failure develops when the heart, via an abnormality of cardiac function (detectable or not), fails to pump blood at a rate commensurate with the requirements of the metabolizing tissues or is able to do so only with an elevated diastolic filling pressure. (medscape.com)
  • Improvement of NYHA class was associated with reduced right ventricular systolic pressure but not with remodelling of the right heart. (lu.se)
  • In a recent issue of Heart , Popovic and colleagues describe some simple observations about changes in ventricular pressures and volumes before and after the Batista procedure. (bmj.com)
  • Conclusions and Clinical Relevance -Orally administered ecadotril reduced left ventricular filling pressures in these dogs by a mechanism that does not require a substantial diuretic effect. (avma.org)
  • Since peak inspiratory pressure is significantly lower during pressure-control ventilation (PCV) than during volume-control ventilation (VCV), one might expect PC modes of ventilation to be superior to VC modes [3]. (medscimonit.com)
  • 0.001) and right ventricular systolic pressure dropped significantly. (lu.se)
  • On the other hand, phenylephrine and noradrenaline can significantly raise both systolic (SP) and diastolic (DP) pressure. (bvsalud.org)
  • It runs along the side of the lateral ventricle and is presumably deformed by ventricular enlargement. (ajnr.org)
  • The right ventricle (RV) copes with this increased pressure by converting from a low-pressure to a high-pressure pump. (ersjournals.com)