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

The etiology and clinical significance of asynchronous relaxation of the left ventricle during isovolumic relaxation period was studied. Fifty patient with angina pectoris, 50 with myocardial infarction, 40 with normal heart, 20 with mitral stenosis and 10 with mitral prolapse syndrome were investigated. Asynchronous relaxation was observed in the following order: 72% in angina pectoris, 46% in myocardial infarction, 30% in mitral valve prolapse and 10% in both pure mitral stenosis and normal heart. In left anterior descending coronary artery disease, asynchronous relaxation was observed in 80%. Asynchronous relaxation seen before aortocoronary bypass graft to the left anterior descending coronary artery either disappeared or decreased after surgery. The contractility of the site, where asynchronous relaxation was seen, was normal in most cases and akinetic in none. The results of this study suggest the possibilities that asynchronous relaxation is at least partially related to localized myocardial ischemia and that it may be an early phenomenon of the effect of myocardial ischemia. With regard to asynchronous relaxation and hemodynamic alterations, force-velocity lissajous was analysed. Distortion of the lissajous in relaxation phase was seen in 73% who showed asynchrony. This distortion can be interpreted as indication of ununiformity of the left ventricular relaxation.
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PMID:Asynchronous relaxation of the ischemic left ventricle. 697 48

Ventricular tachycardia (VT) is found usually in patients with structural heart disease. Its symptomatology depends on haemodynamic manifestations. ECG criteria for the diagnosis of VT are known. For the classification of VT we use morphological criteria (monomorphous and polymorphous), duration of arrhythmia (non-and sustained VT) and the pathomechanism of VT (re-entry, increased automation and triggered activity). The clinical impact of VT and the therapeutic approach depend to a great extent on the basic disease. The therapeutic results and prognostic estimates assembled in ischaemic heart disease cannot be mechanically applied in non-ischaemic heart disease. The authors mention the prevalence of VT and the approach to its treatment in dilatative cardiomyopathy, in prolapse of the mitral valve, in hypertrophic cardiomyopathy, in arrhythmogenic right ventricular dysplasia and in patients with a "normal" heart. Only collection of the necessary data and their analysis will help us to achieve better therapeutic results. In the treatment authors focus attention first of all on the pharmacological approach. They emphasize the need of thorough and comprehensive examination of the patient, draw attention to proarrhythmia. In the prevention of relapses of VT most frequently beta-blockers and amiodarone are used (either alone or combined).
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PMID:[Ventricular tachycardia in non-ischemic heart disease]. 757 85

The many changes in classification of cardiovascular disease during the twentieth century reflect changing etiology of diseases, clinical comprehension and technological advances. In particular, the etiology of valvular heart disease has changed dramatically in the last five decades. The significant reduction of acute rheumatic fever and its sequelae, and the recognition of non-rheumatic causes of valvular disease are responsible for the metamorphosis in the etiology of valvular disorders. Valvular heart disease can be classified as follows: 1) Heritable-congenital causes of valvular heart disease e.g., floppy mitral valve with mitral valve prolapse, bicuspid aortic valve, and the Marfan syndrome; 2) Inflammatory-immunologic causes such as rheumatic fever, acquired immune deficiency syndrome, endocardial proliferative disorders, and antiphospolipid syndrome; 3) Myocardial dysfunction-ischemic cardiomyopathy, dilated or hypertrophic cardiomyopathy-resulting in valvular heart disease; 4) Diseases and disorders of other organs as causes of valvular heart disease, e.g., chronic renal failure and carcinoid heart disease; 5) Valvular heart disease related to aging: calcific aortic stenosis and mitral annular calcification; 6) Valvular disease following interventions such as valvuloplasty, valve reconstructive surgery and valve replacement; and 7) Valvular disease related to drugs and physical agents, such as chronic ergotamine use, radiation therapy and trauma. In clinical practice the most common causes of mitral regurgitation are floppy mitral valve with mitral valve prolapse, ischemic heart disease, dilated cardiomyopathy and mitral annular calcification, while the most common cause of mitral stenosis is rheumatic fever. The most common causes of isolated aortic regurgitation are bicuspid aortic valve and floppy aortic valve, while the most common causes of isolated aortic stenosis are related to the bicuspid aortic valve and the development of calcific senile aortic stenosis. The most common causes of tricuspid regurgitation are dilated cardiomyopathy, ischemic cardiomyopathy, floppy tricuspid valve with tricuspid valve prolapse and infectious endocarditis. Combined mitral and tricuspid regurgitation occur with heritable connective tissue disorders, dilated or ischemic cardiomyopathy, while the most common cause of mitral stenosis plus aortic regurgitation is rheumatic fever. Statistics obtained from cardiac surgery and necropsy may underestimate the true incidence of certain valvular diseases by selection bias. This is particularly so with valvular disease associated with significant ventricular dysfunction, or in the elderly who may not be surgical candidates, or in cases where the valvular disease is not severe enough to require surgical intervention. Recent advances in hemodynamic and imaging technology allow clinicians to define valvular structure and function and to accurately classify valvular heart disease in clinical practice.
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PMID:Valvular heart disease: the influence of changing etiology on nosology. 800 Jun 16

A 56-year-old female had pure regurgitation in all cardiac valves. Color Doppler echocardiography showed a regurgitant jet in all cardiac valves. The severity of regurgitation due to the prolapse in all valves was moderate. The patient had no history of rheumatic fever, ischemic heart disease, endocarditis or hypertension. Physical characteristics of the patient were neither of Marfan's nor Ehlers-Danlos' syndrome. The etiology of regurgitation in all cardiac valves of this patient may be due to multiple valve prolapse.
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PMID:An adult case with multiple cardiac valve prolapse and regurgitation. 832 22

From January 1987 to July 1994, 299 consecutive patients ranging from 4 to 80 years of age underwent mitral repair for pure valve insufficiency due to degenerative disease (59%), rheumatic disease (23%), endocarditis (12%) or ischemic heart disease (6%). During the initial period, a variety of reparative methods were used following the principles originally described by Carpentier. More recently, in our institution other surgical techniques have been introduced: specifically, prolapse of the anterior leaflet was corrected either by replacing the chordae with polytetrafluoroethylene (PTFE) sutures or simply by anchoring the prolapsing free edge to the facing edge of the posterior leaflet ("edge-to-edge" technique). Chordal transposition has also been used occasionally to correct the prolapse of the anterior leaflet. The hospital mortality rate was 1.3%. According to actuarial methods, the overall survival rate was 94% at 7 years, and freedom from reoperation was 86%. Significant incremental risk factors for reoperation were: no use of prosthetic ring, correction of the prolapse of the anterior leaflet by triangular resection or chordal shortening and ischemic etiology of the mitral insufficiency (freedom from reoperation at 7 years was 61%, 56% and 51%, respectively). In the late postoperative period (mean follow-up 3.6 years), 95% of the patients were in NYHA class I or II; four patients had thromboembolic episodes, two hemorrhagic complications and two endocarditis. No patient in whom the prolapse of the anterior leaflet was corrected by the recently introduced technique has required reoperation. The anterior mitral leaflet prolapse was therefore neutralized as an incremental risk factor for reoperation and this has contributed to the improved overall results of mitral valve repair.
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PMID:Improved results with mitral valve repair using new surgical techniques. 875 Dec 50

The medical record linkage system for the Rochester Epidemiology Project provided the means to identify 1,444 incidence cases of ischemic stroke and age- and sex-matched controls from the population from 1960 to 1984 to conduct a case-control study nested in the population. A multiple logistic-regression model permitted the estimation of odds ratios of ischemic stroke for each risk factor while adjusting for confounding variables. The final model, in addition to age and date of stroke, included transient ischemic attacks, hypertension, current smoking, atrial fibrillation, ischemic heart disease, mitral valve disease (other than prolapse), and diabetes mellitus. The process identified interactions showing that ischemic stroke incidence for persons with transient ischemic attacks was higher in women than in men and that the risk decreased with increasing age; that the risk of stroke with hypertension and also with current cigarette smoking decreased with increasing age; and that the risk of ischemic stroke with intermittent or persistent atrial fibrillation was similar when hypertension was present, but without hypertension the risk of stroke was more than seven times greater with persistent than with intermittent atrial fibrillation. None of the odds ratios differed over the five quinquennia of the study, and no effect of antihypertensive treatment on stroke incidence could be demonstrated in the population.
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PMID:A population-based model of risk factors for ischemic stroke: Rochester, Minnesota. 896 Jul 21

Surgical therapy in high-risk patients with advanced symptomatic pelvic floor defects sometimes mandates a compromise in the extent of proposed and desired repairs in favor of procedures that can be performed more rapidly. An 80-year-old woman with disabling genuine stress urinary incontinence and stage IV uterovaginal prolapse who was unable to retain a pessary was at high surgical risk due to ischemic heart disease. Uterovaginal prolapse was treated by LeFort partial colpocleisis, and stress urinary incontinence by transvaginal needle suspension with symptomatic cure and without significant perioperative morbidity. Operating time was 29 minutes and estimated blood loss was 50 ml. The patient was discharged on the second postoperative day with adequate spontaneous voiding and without urinary retention. A combination of partial colpocleisis with transvaginal needle suspension worked well in this case and may represent an effective and rapid surgical option for similar women.
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PMID:Transvaginal needle suspension with LeFort colpocleisis for stress incontinence and advanced uterovaginal prolapse in a high-risk patient. 956 74

We reviewed our clinical and echocardiographic experience in 70 consecutive patients with 73 cardiac myxomas, diagnosed over an 11 year period. There were 21 males and 49 females, ages ranged from 18 to 80 years. Only in 5.7% cases was the diagnosis of myxomas made clinically. 88.6% cases were initially diagnosed as having: mitral valve disease (70%), tricuspid valve disease (10%), ischemic heart disease (5.7%), cardiomyopathy (2.9%), and the remaining 5.7% were detected during family screening and follow-up. The mean duration of symptoms was 10.6 months. The commonest symptom was dyspnoea (80%), followed by constitutional symptoms (45.7%), embolization (30%), palpitation (25.7%), syncope (15.7%), pedal oedema (15.7%) and pain chest (12.9%). The sites of myxomas were as follows: left atrium, 58; right atrium, 9; and, biatrium, 3. All myxomas except 3 were attached to the interatrial septum. The site, size, shape, attachment, mobility, prolapse into ventricle, and surface characteristic of myxomas were accurately assessed by 2D-echocardiography and confirmed in all (65 of 70) who underwent surgery. When the morphological characteristic of myxomas were studied and correlated with clinical features large left atrial myxoma size was closely related with constitutional symptoms, congestive heart failure, with syncope and auscultatory findings suggestive of mitral valve disease, whereas smaller myxoma size and irregular surface were associated with embolization. Constitutional symptoms were only present in left atrial myxoma. Post-operative mean echocardiographic follow-up of 60 months showed no recurrence except in 2 with familial myxoma. We conclude that the majority of myxomas mimic many cardiovascular diseases and were detected in symptomatic patients, so a high index of clinical suspicion is important for its early and correct diagnosis. The size and appearance of the myxomas correlated with the presenting symptoms.
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PMID:Cardiac myxomas: clinical and echocardiographic profile. 957 52

Systolic anterior motion of the mitral valve (MV) with dynamic left ventricular (LV) outflow tract obstruction is a well known phenomenon in hypertrophic cardiomyopathy, or other forms of hyperdynamic LV function associated with hypovolemic states, or LV hypertrophy. We report three patients with MV prolapse in the absence of the above predisposing factors, who developed an LV outflow dynamic gradient during acute transient myocardial ischemia. An interaction between structural abnormalities of the mitral apparatus and ischemia-dependent LV shape deformity most likely accounted for the outflow gradient.
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PMID:Dynamic Left Ventricular Outflow Tract Obstruction During Myocardial Ischemia in Mitral Valve Prolapse Syndrome. 1117 71

Effective valve repair in patients with mitral regurgitation (MR) demands an understanding of its mechanism. In patients with ischemic heart disease and functional MR, which doubles late mortality, normal leaflets are apically displaced. This reflects an altered balance of forces acting on the leaflets: increased tethering forces restricting closure, resulting from an altered geometry of leaflet attachments, and decreased ventricular forces acting to close the leaflets. Extensive evidence confirms a central and predominant role of tethering as the final common pathway inducing functional MR; left ventricular (LV) pressure dynamically modulates the orifice area. Because ischemic MR is a disease of the entire mitral complex, including the remodeling LV, reducing annular size alone is often ineffective. Undersizing rings attempts to compensate for tethering; new and potentially more effective strategies directly address tethering by infarct plication, papillary muscle repositioning with a localized patch, or basal chordal cutting to increase coaptational surface area without prolapse. A comprehensive understanding of the valve in its ventricular context, therefore, provides new opportunities for successful valve repair in patients.
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PMID:Mechanistic insights into functional mitral regurgitation. 1182 35


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