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Query: UMLS:C0033377 (prolapse)
 11,717 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The gross criteria for diagnosing prolapsing mitral valve are: 1. interchordal hooding of the involved leaflets, 2. hooding or doming of leaflets towards the left atrium, 3. elongation of the involved leaflets resulting in an increase in valve area, 4. dilatation of the valve annulus in patients with severe mitral regurgitation. The posterior leaflet is most frequently affected. The involved leaflets, in general, are thickened, soft, greyish white and have a smooth atrial surface. Chordae tendineae are described as elongated, tortuous and attenuated or thinned. Deviations from normal chordal insertion have recently been observed which possibly appear to represent the underlying abnormality. Microscopic findings include significant thickening of the spongiosa and the fibrosa, changes in dense collagen fibers in the atrialis layer, occasionally, with fibrin platelet deposits. Histochemical characterization of changes in the spongiosa may also be helpful in the diagnosis. Ultrastructurally, there may be changes in collagen and elastic fibers as well as myxoid areas. On comparison of findings in surgically-removed mitral valves with those of control specimens from autopsy patients with no cardiac abnormalities, the length of the anterior and posterior leaflet as well as the annular ring diameter was larger in the valves with prolapse. Two-dimensional echocardiography accurately assessed leaflet length when compared to morphologic measurements, however, the annular diameter during systole or diastole was smaller. In patients with mitral regurgitation requiring surgery, mitral valve prolapse is the most common cause. Annular ring dilatation and chordae tendineae rupture appear to contribute substantially to incurrence of the mitral regurgitation. The heart weight is increased in the majority of patients with symptomatic mitral valve prolapse but normal, however, in those without symptoms. The most frequent complication of mitral valve prolapse is mitral regurgitation with or without congestive heart failure. Patients with redundant leaflets may be at high risk of sudden death. Young women with abnormal resting ECG, prolonged Q-T interval, family history of sudden death or complex ventricular arrhythmias may also be at a greater risk of sudden death. The incidence of infective endocarditis appears higher in those with redundant than in those with nonredundant valves. The incidence of cerebral ischemic events is low.(ABSTRACT TRUNCATED AT 400 WORDS)
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PMID:The pathology of mitral valve prolapse. 304 84

The clinical presentation, diagnosis, and surgical treatment of 63 patients with doubly committed subarterial ventricular septal defects (DCVSD) were analyzed retrospectively. The patients were divided into three groups. Thirty-one patients had severe congestive heart failure in infancy and presently have a large ventricular septal defect that has no tendency to close or to produce aortic valve regurgitation (Group 1). Ideally, these defects should be closed in infancy, and the transpulmonary approach is recommended to achieve closure. In the first group, there was one death in a patient with a hypoplastic right ventricle. In Group 2, nineteen patients had aortic valve prolapse or aortic valve regurgitation. The DCVSD were moderately large or small. A number of DCVSD in Group 2 patients had maintained the normal offsetting of the arterial valves. These defects must be closed by the time mild aortic valve regurgitation has occurred. In Group 2, there was one late death in a patient who developed subacute bacterial endocarditis. The two patients who had severe aortic valve regurgitation required aortic valve replacement and underwent multiple surgical procedures to replace calcified bioprostheses. Group 3 comprised 13 patients who were diagnosed with tetralogy of Fallot. All of these patients had a large DCVSD with aortic valve overriding. All Group 3 patients survived radical repair of the defect, which required a transannular patch in most cases (76%).
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PMID:Surgical management of doubly committed subarterial ventricular septal defects. 318 Apr 5

The Kearns-Sayre syndrome is a mitochondrial myopathy characterised by ptosis, chronic progressive external ophthalmoplegia, abnormal retinal pigmentation, and cardiac conduction defects. A unique case is reported in which there was rapid development of progressive congestive cardiac failure that required cardiac transplantation. A review of published reports of mitochondrial myopathy shows that a minority of cases (less than 20%) have cardiac involvement. This had previously been limited to abnormalities of cardiac conduction with progressive heart block. Myocardial biopsy has, however, shown ultrastructural evidence of a generalised mitochondrial disorder which hitherto has not been associated with a functional deficit.
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PMID:Cardiomyopathy in the Kearns-Sayre syndrome. 337 Jan 84

Three patients with mitral regurgitation (MR) associated with aortitis syndrome are presented. All had multiple lesions of the large sized arteries, calcification of the aorta, mild inflammatory findings, a chronic course, and congestive heart failure. MR was observed by ventriculography in all 3 patients. Case 1 had mitral valve prolapse and secondary systemic hypertension. Case 2 showed mildly thickened mitral valve leaflets and had moderate aortic regurgitation (AR). Case 3 had massive AR. The grade of MR was moderate in Cases 1 and 2, and massive in Case 3. The left ventricle was moderately dilated in Cases 1 and 2 but contracted sufficiently and symmetrically in all 3 patients. Other than the prolapse, no significant mitral valve deformity or left ventricular asynergy was evident by ventriculography. The incidence of MR was 3.1% of 128 patients with aortitis syndrome observed in our clinic. MR may be found in the late stage of aortitis syndrome. It may be caused by a mild valvular lesion related to aortitis syndrome and be exacerbated by increased hemodynamic loads such as those which occur in secondary hypertension and AR.
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PMID:Mitral regurgitation associated with aortitis syndrome. 613 11

A case of rhabdomyosarcoma of the left atrium and left ventricle demonstrated by echocardiography was reported. A 31-year-old man was admitted to our hospital for evaluation of recently developed exertional dyspnea. A holosystolic murmur and a protodiastolic sound were audible at the apex. A chest X-ray showed pulmonary congestion without cardiomegaly. The two-dimensional echocardiogram showed a dense stratified mass of echoes occupying the medial half of the left ventricular cavity, and a part of the abnormal mass of echoes was observed to move toward the left ventricular outflow tract during systole. Another small mass attached to the anterior mitral leaflet was also observed to prolapse partly into the left atrium during systole. The interatrial septum showed a thick and hard band of echo in the short-axis view. Right cardiac catheterization revealed pulmonary hypertension and the levogram of the pulmonary angiography showed left atrial and left ventricular filing defects. The repeated echocardiographic study showed the growth of the abnormal mass. The patient underwent operation, but he died of congestive heart failure thereafter. The necropsy diagnosis was rhabdomyosarcoma of the heart, involving the left atrium and left ventricle.
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PMID:[Rhabdomyosarcoma of the heart involving the left ventricle and left atrium]. 664 8

The tricuspid valve was studied in 143 subjects using two dimensional echocardiography. The groups studied were 40 normal subjects, 31 patients with mitral valve prolapse, 22 with clinically probable tricuspid valve prolapse, 20 with congestive cardiac failure, and 30 with miscellaneous cardiac conditions but no features of right heart disease. Using multiple views it was possible to record all three leaflets in 74.8% of cases and anterior and septal leaflets in 95%. Prolapse of the tricuspid valve was recognised in 13 patients: six (19.5%) of the group with mitral valve prolapse and seven (6%) of the remaining patients. Prolapse of all three leaflets was shown in one patient, anterior and septal prolapse in six patients, anterior and posterior in three patients, septal leaflet prolapse alone in two patients, and anterior alone in one patient. Two dimensional echocardiography allows definition of individual tricuspid leaflets and prolapse of any or all leaflets can be diagnosed. Tricuspid valve prolapse is commonly associated with prolapse of mitral valve leaflets but isolated cases are recognised.
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PMID:Two dimensional echocardiography and the tricuspid valve. Leaflet definition and prolapse. 683 36

Congenital fistulas of the internal mammary artery to the pulmonary circulation are rare, with only 12 patients described in the world literature. Two additional patients are now described who have an associated prolapse of the mitral valve, one of whom had mitral insufficiency. In most instances, the arteriovenous fistula is essentially asymptomatic and is often discovered when a continuous murmur is heard on routine chest examination. The definitive diagnosis is made best by selective arteriography. The embryologic origin of these fistulous communications may be the maldevelopment of accessory bronchial arteries arising from the internal mammary artery. In view of the potential risks of congestive heart failure as well as proximal dilation and degeneration of the parent artery, secondary hypertension, and endocarditis, operative closure of the arteriovenous fistula is recommended.
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PMID:Syndrome of congenital internal mammary-to-pulmonary arteriovenous fistula associated with mitral valve prolapse. 728 1

We have experienced a mitral valve plasty for mitral regurgitation combined with dilated cardiomyopathy in a 21-year-old male patient with Noonan's syndrome, who had suffered from recurrent congestive heart failure. In echocardiography, severe mitral regurgitation and prolapse of the posterior mitral leaflet were noted. The left ventricle was dilated and the function was severely deteriorated. The plasty consisted of plication of the prolapsed posterior leaflet and annuloplasty with Carpentier ring. Intraoperative biopsy of the myocardium of the left ventricle showed an appearance consisting with dilated cardiomyopathy. Postoperatively the mitral regurgitation disappeared and the patient returned to his ordinary life.
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PMID:[Successful mitral valve plasty for mitral regurgitation combined with dilated cardiomyopathy in Noonan's syndrome]. 761 41

Twenty-six patients with moderate and severe ischemic mitral regurgitation due to papillary muscle dysfunction underwent mitral valve replacement (MVR) or mitral annuloplasty (MAP) using modified Kay method. Emergent operation was performed in 12 patients of whom 11 had severe congestive heart failure even under IABP, 5 had cardiogenic shock and 9 needed respiratory care with intubation preoperatively. Elective operation was performed in 14 patients of whom 6 had history of congestive heart failure and 1 had episodes of ventricular tachycardia. As intraoperative findings of mitral valve, mural annular dilatation in 84.6%, prolapse of anterior leaflet in 23.1%, papillary muscle scar in 15.4%, chordal elongation in 15.4% and chordal rupture in 3.8% were seen separately or in combination. In 22 patients MAP using modified Kay method and CABG were performed, but in 4 patients MVR was needed because of the prominent prolapse of the anterior leaflet. Fourteen patients who underwent MAP with CABG and one MVR with CABG survived. Hospital mortality was higher in emergent (58.5%) than elective operation (28.6%). In the 15 survivors, mitral regurgitation decreased below Sellers 2, pulmonary wedge pressure decreased significantly (p < 0.01) and NYHA functional class improved to I or II postoperatively. During the follow up period of 15-100 (mean 38.7 +/- 21.6) months, 2 MAP+CABG patients died suddenly, but the remaining 13 patients were in NYHA class I or II and no progression of MR was seen. These results indicated that MAP+CABG is recommendable in the treatment of ischemic mitral regurgitation due to papillary muscle dysfunction, in order to preserve cardiac function and to reduce valve related complications.
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PMID:[Mitral valve repair for the treatment of ischemic mitral regurgitation]. 764 9

According to a 3-year collaborative study estimating maternal mortality rates from 41 hospitals affiliated with teaching centers in India, maternal mortality was 721 per 100,000 live births. Community studies in rural areas of Sirur, Pachod, and Ambula reported maternal mortality as 210-253 per 100,000. Cohort studies conducted by the Indian Council of Medical Research reported maternal mortality as 530 per 100,000 based on data from rural areas of Varanasi, 460 per 100,000 in urban Delhi, and 450 per 100,000 in urban Madras. The Ministry of Health gave the rate as 460 per 100,000 in 1984, while UNICEF gave a figure of 400 per 100,000 for 1980-91. India has 1 out of 4 of the world's maternal deaths, or 1 every 6 minutes. The risk of maternal death has been calculated to be one in 64. Risk is unevenly distributed geographically. Risk is low in Kerala compared to Uttar Pradesh or Madya Pradesh. In 1992 maternal mortality was calculated to be 1320 per 100,000 births based on 5 district hospitals. The cause of maternal deaths was anemia in 25% of cases. 75% of cases were accounted for by eclampsia, sepsis, hemorrhage, and abortion. Anemia (pre-existing the pregnancy) is acerbated by the demands of pregnancy and causes congestive heart failure and death. Blood losses of greater than 150 ml (due to hemorrhages of pregnancy and labor) can be fatal. During 1982-89 anemia was responsible for 17-24% of all maternal deaths in rural areas. Morbidity from pregnancy-related causes included obstetric fistulae, pelvic inflammatory disease, anemia, genital prolapse, and urinary incontinence. Quality of maternal care is an important factor in reducing maternal mortality and morbidity. Societal factors such as illiteracy and malnutrition, early marriage, poorly supervised pregnancies, and lack of transportation during emergencies are other determinants of mortality and morbidity. About 10% of maternal deaths are attributed to unsafe abortion. The government aim for the year 2000 of 100% prenatal care and care during delivery will require professional commitment and thousands more midwives in rural areas.
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PMID:How safe motherhood in India is. 765 33


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