commissurotomy

commissurotomy
1. Surgical division of any commissure, fibrous band, or ring via an incision or disruption e.g., balloon inflation. 2. SYN: midline myelotomy.
- mitral c. opening the narrowed mitral orifice for the relief of mitral stenosis.

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com·mis·sur·ot·o·my .käm-ə-.shu̇(ə)r-'ät-ə-mē, -shə-'rät- n, pl -mies the operation of cutting through a band of muscle or nerve fibers specif separation of the flaps of a mitral valve to relieve mitral stenosis: VALVULOTOMY

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com·mis·sur·ot·o·my (kom″ĭ-shər-otґə-me) [commissure + -tomy] surgical incision or digital disruption of the component parts of a commissure to increase the size of the orifice; this was formerly commonly done to separate the adherent, thickened cusps of a stenotic mitral valve.

Medical dictionary. 2011.

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