1/16. The use of pulsatile perfusion during aortic valve replacement in pregnancy.Cardiac operations are occasionally required during pregnancy. Despite a low maternal mortality, fetal mortality remains high. Previous reports have suggested maintenance of high perfusion pressure and flow rate as protective measures to maintain fetal viability. Recent experimental data suggest pulsatile perfusion may help preserve placental hemodynamic function. The successful use of pulsatile bypass to replace the aortic valve in a 25-year-old female at 14 weeks gestation, with both maternal and fetal survival, is presented.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
2/16. Rheumatic valvulitis and constrictive pericarditis. Report of case.A 13-year-old girl was admitted with congestive heart failure, edema, ascites, and jaundice. There was an apical pansystolic murmur of mitral insufficiency and marked cardiomegaly. Her venous pressure was elevated. Despite medical treatment her condition deteriorated, hepatic and renal failure as well as disseminated intravascular coagulation ensued, leading to her death. At post mortem she was found to have rheumatic mitral valvulitis and constrictive pericarditis. The pathologic picture of pericarditis was nonspecific, but in presence of a positive skin test for tuberculosis the latter is considered to be the most likely cause of the pericarditis, nevertheless, rheumatic etiology of pericarditis in this case cannot be excluded. The presence of rheumatic heart disease and cardiomegaly may have led to the exacerbation of symptoms and signs of constrictive pericarditis and severe right heart failure.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
3/16. thromboembolism associated with pigtail catheters.Three incidents of asymptomatic arterial thromboembolism associated with polyurethane pigtail catheters occurred during 1,417 cases of left ventricular angiocardiography. No similar incident occurred with polyethylene pigtail or (dacron) Eppendorf and Gensini (style) catheters. in vitro comparison of hydraulic characteristics of polyurethane (Cordis) and polyethylene (Cook) pigtail catheters showed higher flow-pressure transmission through the tip of the Cordis polyurethane catheter favoring dislodgment of any existing clot. The problem of thrombogencity of polyethylene compared with polyurethane remains unsettled. Our experience with polyurethane pigtail catheters has resulted in limitation of their use in our laboratory.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
4/16. "Low pressure" left ventricular tamponade in a patient with rheumatic mitral stenosis and hiv-related acute pericarditis.A case report of isolated left ventricular tamponade in a patient with rheumatic mitral stenosis and effusive pericarditis is presented. The haemodynamics and management of this under-diagnosed pathology is discussed.- - - - - - - - - - ranking = 4keywords = pressure (Clic here for more details about this article) |
5/16. Percutaneous mitral valvuloplasty in a mid-term pregnant woman with severe rheumatic mitral stenosis.A 28-year-old woman with severe mitral stenosis underwent percutaneous mitral valvuloplasty at 26 weeks' gestation. Balloon dilation using a double 18-18 mm balloon resulted in improvement in mean mitral pressure gradient (32 to 8 mmHg) and in calculated mitral valve area (0.9 to 2.4 cm2) without complications and any evidence of fetal distress during procedures with an estimated radiation exposure to the fetus of 0.13 rem. This procedure resulted in the disappearance of symptoms of congestive heart failure and allowed for normal full term spontaneous delivery of a 3.51 Kg boy without any complication.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
6/16. Severe rheumatic mitral stenosis with pericardial effusion causing left ventricular tamponade.A woman of 38 was admitted for urgent surgery of severe mitral stenosis causing pulmonary oedema. echocardiography showed a pericardial effusion with apparent distortion and collapse of the left ventricle. Urgent drainage of the effusion before mitral valve surgery led to an improvement in cardiac output with no detectable change in right heart pressures.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
7/16. Effect of left atrial compliance on pulmonary artery pressure: a case report.BACKGROUND: Left ventricular diastolic dysfunction, with secondary atrial pressure elevation, is a well-known concept. On the contrary, effect of left atrial compliance on pulmonary pressure is rarely considered. CASE PRESENTATION: We report the echocardiographic case of a 9-year-old child who presented severe rheumatic mitral valve regurgitation with a giant left atrium, in contrast to a normal artery pulmonary pressure, testifying of the high left atrial compliance. CONCLUSION: Left atrial compliance is an important determinant of symptoms and pulmonary artery pressure in mitral valve disease.- - - - - - - - - - ranking = 8keywords = pressure (Clic here for more details about this article) |
8/16. aneurysm of atrial septum associated with rheumatic mitral stenosis simulating tumour of right atrium.We present a case of aneurysm of interatrial septum associated with rheumatic mitral stenosis, which supports the theory that claims that the pressure gradient between the atriums plays an important part in its aetiology. The angiographic image of a filling defect in the right atrium may cause an erroneous diagnosis of atrial tumour. The levophase of right angiography and cross-sectional echocardiography confirmed the diagnosis of aneurysm of interatrial septum.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
9/16. Rheumatic tricuspid stenosis without involvement of the mitral valve.We describe a case of rheumatic tricuspid stenosis without involvement of the mitral valve. Rheumatic disease of the tricuspid valve is very rare in the absence of concomitant mitral valvar disease. We suggest that the closing pressure at the valve is not the only factor governing localization of the rheumatic process.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
10/16. Percutaneous mitral valvuloplasty in rheumatic mitral stenosis by isolated transarterial approach. A new and feasible technique.A highly symptomatic 20-year-old woman with rheumatic mitral valvular stenosis was referred for cardiac catheterization. Following the procedure it was decided to perform a mitral valvuloplasty with a balloon catheter. An isolated transarterial approach through the right femoral artery was used. A Sones catheter was introduced into the left atrium and through it a long teflon-coated guide wire was placed into this cavity. The Sones catheter was removed and an 18 mm diameter balloon catheter was placed under the mitral valve and inflated several times for about 15 sec each. The pulmonary wedge and pulmonary artery pressures were significantly lower than the pre-valvuloplasty ones. The angiograms showed better mitral valve opening.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
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