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Year : 1979  |  Volume : 25  |  Issue : 4  |  Page : 195

M-mode echocardiography

Department of Cardiology, K.E.M. Hospital and Seth G. S. Medical College, Parel, Bombay-400 012, India

Correspondence Address:
A S Vengsarkar
Department of Cardiology, K.E.M. Hospital and Seth G. S. Medical College, Parel, Bombay-400 012
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Source of Support: None, Conflict of Interest: None

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How to cite this article:
Vengsarkar A S. M-mode echocardiography. J Postgrad Med 1979;25:195

How to cite this URL:
Vengsarkar A S. M-mode echocardiography. J Postgrad Med [serial online] 1979 [cited 2023 Mar 30];25:195. Available from:

One has witnessed, in the last decade, a surge of non-invasive heart investiga­tions of all manner. Isotopic 'imaging, cat scanning, and echocardiography were the high points in this endeavour; they have already been recognised as very useful supplementaries to the conven­tional heart catheterization and angio­graphy; in some situations they proved superior to the latter. Completion of newer projects like Earl Wood's dynamic spatial reconstructor may, in time to come, provide the apex to this new move­ment in cardiology.

This collection of papers serves to illustrate the K.E.M. Hospital experience in M-mode echocardiography over the last four years. The early Edlerian ap­plication of this technique in valvar disease provided the greatest stimulus; and a large experience in the subject soon revealed the uses as well as the limitations of valvar echoes in rheumatic heart disease; that in mitral stenosis it has qualitative value but it fails to quan­tify the lesion, especially in the severe grades; that in mixed mitral lesions, and in aortic valvar disease, cardiac cathe­terization may continue to play a deci­sive role; that the technique provides an accurate measurement of the aortic root and the mitral annulus, of value in re­placement surgery; that the Flint rumble may now be assessed better with echo­cardiography.

Left atrial dimensions are most accu­rately assessed by echocardiography. It is conclusively proved by measurements of this chamber in Indian normal subjects that its size is smaller than the reported Western values for identical age groups. This should eliminate erroneous assess­ment of left atrial size in clinical situa­tions, especially mitral heart disease.

Apart from its application in rheumatic hearts, echocardiography has found a vast range of applications; indeed the listing never does seem to come to an end; in certain areas like IHSS, myxo­mas, ventricular volume overload, mitral valve prolapse, prosthetic valve dysfunc­tion. and pericardial effusion, it has assumed diagnostic importance. In tuberculosis pericardial effusion, experi­ence at this hospital suggests that echo­cardiography may detect constriction at an early stage of the disease.

The future holds great promise for ultrasonic's. Perfection of computerized ultrasound, particularly the phased array system, will open a new vista in heart investigation, in that it will offer direct anatomic visualization of the heart akin to angiography. This may well be the major advance in this field, and it seems to have arrived already.


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Online since 12th February '04
© 2004 - Journal of Postgraduate Medicine
Official Publication of the Staff Society of the Seth GS Medical College and KEM Hospital, Mumbai, India
Published by Wolters Kluwer - Medknow