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ARTICLE
Year : 1978  |  Volume : 24  |  Issue : 4  |  Page : 237-239

An unusual instance of mitral valve prolapse in endomyocardial fibrosis


1 Department of Cardiology, Seth G.S. Medical College and K.E.M. Hospital, Parel, Bombay 400012, India
2 Department of Pathology, Seth G.S. Medical College and K.E.M. Hospital, Parel, Bombay 400012, India
3 Department of Medicine, Seth G.S. Medical College and K.E.M. Hospital, Parel, Bombay 400012, India

Correspondence Address:
J J Dalal
Department of Cardiology, Seth G.S. Medical College and K.E.M. Hospital, Parel, Bombay 400012
India
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PMID: 745154

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 :: Abstract 

This is a report of an unusual case showing a mitral valve prolapse in the presence of a biventricular endomyocardial fibrosis (EMF). The EMF was strongly suspected on left ventricular angiography and later proved at autopsy. The prolapse of the mitral valve was detected at echocardiography.
To the best of our knowledge this is the first report of a case of EMF associated with mitral valve prolapse.



How to cite this article:
Dalal J J, Vengsarkar A S, Mondkar A M, Kinare SG, Nair K G. An unusual instance of mitral valve prolapse in endomyocardial fibrosis. J Postgrad Med 1978;24:237-9

How to cite this URL:
Dalal J J, Vengsarkar A S, Mondkar A M, Kinare SG, Nair K G. An unusual instance of mitral valve prolapse in endomyocardial fibrosis. J Postgrad Med [serial online] 1978 [cited 2014 Nov 24];24:237-9. Available from: http://www.jpgmonline.com/text.asp?1978/24/4/237/42655



 :: Introduction Top


Considerable knowledge of endomyo­cardial fibrosis (EMF) has accumulat­ed [1],[4] since its recognition by Davies and his associates. [3] EMF is not an uncommon entity in India, particularly in the Southern areas of the country. [6],[7]

The syndrome of mitral valve prolapse with its multiple etiological factors is now well established. [2] The essence of the pathology of EMF is ventricular fibrosis involving the papillary muscles which would prevent a prolapse of the mitral valve into the left atrium. The presence of both these features in this case is undoubted. but the explanation is difficult. It is postulated that patchy in­volvement results in an uneven distribu­tion of tension in the mitral apparatus resulting in a prolapse.


 :: Case report Top


Mr. V. G... a 21 year old student presented with a history of progressively increasing dysponea over a period of three years along with exertional palpitations. He had suffered two episodes of moderate haemoptysis. There was no history of systemic embolization or con­gestive heart failure. He gave no history of rheumatic fever.

General examination revealed an averagely built man with a regular pulse rate of 90/min. and a blood pressure of 130/80 mm Hg. Pro­minent `a' and `v' waves were present in the jugular pulse. There was no cyanosis or club­bing. Precordial examination revealed an apex in the 6th left intercostal space in the anterior axillary line along with a marked right ventri­cular lift. On auscultation, a grade 4/6 pansystolic murmur was present at the apex and conducted towards the left axilla. There was no click at the apex. There was evidence of severe pulmonary hypertension.

The electrocardiogram showed a QRS axis of + 120 o (degrees) with biventricular hyper­trophy.

The X-ray showed an enlarged heart (C.T, ratio 0.7) with a prominent main pulmonary artery and pulmonary venous congestion. The E.S.R. and the W.B.C. count were normal.

The echocardiogram

The echocardiogram was performed using a Unirad Diagnostic Ultrasound Unit Model 902 The transducer used was a 2.25 MHz, non-focus type with a repetition rate of 1000/sec. The re­cording was made on a photographic film roll 400 ASA, 120 size using a Hewlett Packard 191 A Camera.

The echocardiogram showed presence of left ventricular volume overload. The mitral valve excursions were brisk and a mid-late systolic prolapse of both the leaflets was present See [Figure 1] on page 236B.

Catheterization and angiography

The catheterization data is depicted in [Table 1]. A left ventricular angiogram in the R.A.O position See [Figure 2] on page 236B showed pros. mitral regurgitation and an irregular left ventricular cavity strongly suggestive of an EMF Right ventricular angiography was not under taken as there was no clinical indication for it.

The patient received a Bjork Shiley prosthetic valve and was discharged following an unevent­ful post-operative period. One month later he was readmitted with severe breathlessness thought to be due to a paravalvular leak and died before a surgical re-exploration could be attempted.

The autopsy showed presence of EMF involv­ing both the ventricles. The mitral valve leaflets were not thickened and did not reveal any myxomatous degenerative change.


 :: Discussion Top


Mitral valve involvement is not unusual in left sided EMF [5] and is usually based on the distortion of the mitral apparatus due to fibrosis of the endocardium and papillary muscles. In contrast to the usual feature of tethering of the mitral leaflets to the left ventricle, this case had prolapse of the valve into the left atrium. Though the literature on mitral valve prolapse is voluminous [2] and the etiologi­cal factors multiple and diverse, EMF has, to our knowledge, not yet been as­sociated with a prolapse of the mitral valve.

Though the autopsy has confirmed the diagnosis of EMF, it has not been of help in explaining the prolapse. The possibi­lity of unequal fibrosis and uneven dis­tribution of tension as a cause of the pro­lapse remains unproven, but the fact that M.V.Y. can exist with EMF has been shown unequivocally.


 :: Acknowledgements Top


We wish to thank the Dean, K.E.M. Hospital and Seth G.S. Medical College, Bombay for permission to publish this data. Thanks are also due to Mr. Sorab for technical assistance.

 
 :: References Top

1.Chew, C. Y. C., Ziady, G. M., Raphael, M. J., Nellen, M. and Oakley, C. M.: Pri­mary restrictive cardiomyopathy. Non­tropical endomyocardial fibrosis and hypereosinophilic heart disease. Brit. Heart J., 39: 399-413, 1977.  Back to cited text no. 1    
2.Criley, J. M. and Kissel, G. L.: Prolapse of the mitral valve-The Click and Late systolic murmur syndrome. In, "Progress in Cardiology" (Editors-Yu, P. N. and Goodwin, J. F.) Vol. 4 Lea and Febiger. Philadelphia, 1975, pp. 23-36.  Back to cited text no. 2    
3.Davies, J. N. P.: Endocardial fibrosis in Africans. East African Med. J., 25: 10-14, 1948: cited by Falase ett al. in ref. 4.  Back to cited text no. 3    
4.Falase, A. 0., Kolawole, T. M. and Lagundoye, S. B.: Endomyocardial fibrosis: Problems in differential diagnosis. Brit. Heart J., 38: 369-374, 1976.  Back to cited text no. 4    
5.Fowler, J. M. and Somers, K.: Left ven­tricular endomyocardial fibrosis and mitral incompetence: a new syndrome. Lancet, 1: 227-228, 1968.  Back to cited text no. 5    
6.Nair, D. V.: Endomyocardial fibrosis in Kerala. Ind. Heart J., 23: 182-190, 1971.  Back to cited text no. 6    
7.Reddy, D. J., Omer, S., Prabhakar, V., Shyamsundar, P. and Rao, K. S.: Endo­myocardial fibrosis. J. Ind. Med. Assoc., 45: 440, 1965.  Back to cited text no. 7    


    Figures

  [Figure 1], [Figure 2]
 
 
    Tables

  [Table 1]



 

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