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Updated: Feb 23, 2026

The Intra-Aortic Balloon Pump
Published on: February 5, 2021
Percutaneous Balloon Dilation of Discrete Subaortic Stenosis: A Futile Exercise
Nagaraja Moorthy1, Rajiv Ananthakrishna, Dattatreya P V Rao
1Department of Cardiology, Sri Jayadeva Institute of Cardiovascular Sciences and Research, Bangalore, India 560069. drnagaraj_moorthy@yahoo.com.
Abstract:
Discrete subaortic stenosis (DSS) is a progressive obstruction of left ventricular outflow tract (LVOT) resulting in the development of aortic regurgitation in its natural course. Hence, early intervention is recommended. Percutaneous balloon dilation of DSS has been reported and can substantially reduce LVOT pressure gradient. The response to balloon dilation of DSS is transient and may complicate with chordal or papillary muscle rupture. Hence, balloon dilation of DSS should be discouraged.
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