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surgical incision or digital disruption of the components of a commissure to increase the size of the opening.
1. Surgical division of any commissure, fibrous band, or ring via an incision or disruption, for example, balloon inflation.
2. Synonym(s): midline myelotomy
commissurotomy/com·mis·sur·ot·o·my/ (-ot´ah-me) surgical incision or digital disruption of the components of a commissure to increase the size of the orifice; commonly done to separate adherent, thickened leaflets of a stenotic mitral valve.
n. pl. commissuroto·mies
Surgical incision of a commissure in the body, as one made in the heart to relieve constriction of the mitral valve or one made in the brain to treat seizure disorders.
Etymology: L, commissura, a connection; Gk, temnein, to cut
the surgical division of a fibrous band or ring connecting corresponding parts of a body structure. A commissurotomy is commonly performed to separate the thickened, adherent leaves of a stenosed mitral valve.
commissurotomySurgery The surgical splitting of a commissure–eg in the brain or cusps of heart valves. See Percutaneous transvenous mitral commissurotomy.
1. Surgical division of any commissure, fibrous band, or ring using surgery or a balloon catheter technique.
2. Synonym(s): midline myelotomy.
commissurotomyCutting of any COMMISSURE, especially the midline transverse nerve tract bundle that connects the two halves of the CEREBRUM.
surgical incision or digital disruption of the components of a commissure to increase the size of the orifice.
the breaking apart of the adherent leaves (commissure) of the mitral valve.