Mitral Valve Stenosis
www.ihimontanafoundation.org/Heart.../Heart.../HVDMitral_St...
Severe mitral valve obstruction may lead to the development of pulmonary ... Surgically ***separating or shaving back valve leaflets*** (a commissurotomy) can ...

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Note added at 1 hr (2014-11-02 16:14:35 GMT)
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HVD-Pulmonary Valve Disease - The International Heart ...
www.ihimontanafoundation.org/Heart.../Heart.../HVDPulmonary...
Surgically separating or shaving back valve leaflets (a commissurotomy) can eliminate pulmonary stenosis and improve blood flow. If the lesion is too severe to ...

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Note added at 1 hr (2014-11-02 16:20:46 GMT)
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http://www.proz.com/kudoz/russian_to_english/medical_cardiol...



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Note added at 1 hr (2014-11-02 16:24:59 GMT)
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http://www.texheartsurgeons.com/Valves.htm

Surgical Treatment of Diseased Heart Valves
Heart Valve Surgical Repair
Repairing the valve can be done by one of three ways: commissurotomy, valvuloplasty, or valve replacement. Commissurotomy and valvuloplasty are repair procedures, whereas valve replacement involves surgical implantation of a new valve.
When a patient has a stenosed or narrow valve, which limits the blood flow, the flap-like doors (cusps or leaflets) may thicken and adhere to one another. The cardiovascular surgeon cuts or shaves the points where the cusps meet (commissures) to address this problem.
Valvuloplasty is a procedure that reinforces the cusps to provide more support and permit proper closure of the valve that has regurgitation (back flow leakage). In order to accomplish this, the cardiovascular surgeon attaches a ring-like device to the outside of the valve.


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Note added at 1 hr (2014-11-02 16:27:44 GMT)
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http://slovar-vocab.com/english-russian/new-medical-vocab/co...

COMMISSUROTOMY
1) комиссуротомия 2) срединная миелотомия, комиссуральная миелотомия


I don't do German or Russian, but I do translate cardiology texts.

Good luck and wait for other colleagues to help here too!

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Note added at 1 hr (2014-11-02 16:29:24 GMT)
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Ah
see
The Aortic Valve: To Dilate, Repair, or Replace That Is the ...
www.annalsthoracicsurgery.org/article/0003-4975(96)00157-9/...
that aortic valve repair is still possible after disruption of the aortic ... Creative techniques including leaflet repair, **leaflet shaving**, and **commissurotomy** were used.

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Note added at 1 hr (2014-11-02 16:31:49 GMT)
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possibly useful for differentiating between "leaflet shaving" and "commissurotomy" per se:

http://forum.dearheart.ru/93/3015/20.htm