Why the study?
Does septal myotomy and myectomy impair left ventricular systolic function at rest and during exercise in patients with IHSS?
Does septal myotomy and myectomy impair left ventricular systolic function at rest and during exercise in patients with IHSS?
Septal myotomy and myectomy in patients with IHSS relieves outflow obstruction and symptoms without causing clinically important impairment of global left ventricular systolic function.
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Modest EF decline accompanies gradient relief after myectomy; supports procedural safety in IHSS while leaving open need for randomized confirmation.
Borer et al. (1979) studied this question.
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