نتایج جستجو برای: right ventricular physiology

تعداد نتایج: 490140  

Journal: :Critical care medicine 2008
Clifford R Greyson

Right ventricular failure may be defined as the inability of the right ventricle of the heart to provide adequate blood flow through the pulmonary circulation at a normal central venous pressure. Critical care specialists encounter right ventricular failure routinely in their practice, but until recently right ventricular failure as a primary clinical entity received scant consideration. Indeed...

Journal: یافته 2005
fereidon Sabzi , hasan Teimori ,

Background: It has not been yet developed a ost suitable method to treat right ventricular failure due to pulmonar artery hypertention resulted from ventricular arrhythia. Though some case reports about patients ready to heart transplant using left assist device or biventral assist device as bridge have been published in Journals, but nocase concerning application of centrifugal pump for treatm...

Journal: :Revista espanola de cardiologia 2010
Rafael Alonso-González Konstantinos Dimopoulos Siewyen Ho José M Oliver Michael A Gatzoulis

Right ventricular dysfunction is not uncommon in adults with congenital heart disease. In congenital heart disease, unlike acquired heart disease, the right ventricle is not always the subpulmonary ventricle: it may support the systemic circulation as it does in patients with transposition complexes. The result is chronic right ventricular pressure overload. In contrast, pulmonary valve regurgi...

Introduction:  In patients who underwent surgery to repair Tetralogy of Fallot, right ventricular dilation from pulmonary regurgitation may be result in right ventricular failure, arrhythmias and cardiac arrest. Hence, pulmonary valve replacement may be necessary to reduce right ventricular volume overload. The aim of present study was to assess the effects of pulmonary valve replacement on rig...

رنجبرنژاد اصفهانی, حسن ,

Pulmonary artery pressure can be estimated from right ventricular-right atrial pressure gradient in patients with tricuspid regurgitation. The most common approach is to estimate pulmonary artery systolic pressure from right ventricular pressure (assuming no pulmonic stenosis) determined as the sum of the right ventricular-right atrial pressure gradient and either an assumed or clinically deter...

Journal: :journal of cardio-thoracic medicine 0
ali eshraghi cardiologist, mashhad university of medical sciences, mashhad, iran mahmoud mohammadzadeh shabestri cardiologist, atherosclerosis prevention research center, imam reza hospital, faculty of medicine, mashhad university of medical sciences, mashhad, iran majid jalalyazdi cardiologist, mashhad university of medical sciences, mashhad, iran zahra alizadeh sani cardiologist, mashhad university of medical sciences, mashhad, iran

introduction: the correlation between right and left ventricular ejection fractions (rvef and lvef, respectively) has been studied in only a small number of patients with a marked decrease in rvef and lvef. the aim of the present study was to compare lvef and rvef in patients with ischemic heart disease. rvef and lvef were measured by cardiovascular magnetic resonance (cmr) imaging. materials a...

Journal: :Arquivos brasileiros de cardiologia 2003
Silvia Meyer Cardoso Nelson Itiro Miyague

OBJECTIVE To assess right ventricular diastolic function in the intermediate postoperative period of repair of tetralogy of Fallot. METHODS We carried out a case-control study with 60 patients divided into 2 groups as follows: 1) group I - 30 patients who had undergone repair of tetralogy of Fallot and 2) group II - 30 healthy children. The 2 groups were paired for age, sex, and body surface....

2006
Maurizio Cecconi Edward Johnston Andrew Rhodes

Right ventricular failure (RVF) is an underestimated problem in intensive care. This review explores the physiology and pathophysiology of right ventricular function and the pulmonary circulation. When RVF is secondary to an acute increase in afterload, the picture is one of acute cor pulmonale, as occurs in the context of acute respiratory distress syndrome, pulmonary embolism and sepsis. RVF ...

Journal: :the journal of tehran university heart center 0
hassan teimouri shahid madani hospital, lorestan university of medical sciences, lorestan, iran. feridoun sabzi imam ali hospital, kermanshah university of medical sciences, kermanshah, iran. babak nasiri shahid madani hospital, lorestan university of medical sciences, lorestan, iran.

right ventricular failure due to right coronary artery disease, right ventricular hypertrophy, stunning, abnormal septal motion, myocardial infarction, or non-homogeneous distribution of cardioplegia is an uncommon but serious complication of open heart surgery. we report a patient with severe right ventricular hypertrophy secondary to severe mitral valve stenosis and another patient with detac...

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