BRENT M. PARKER, M.D.
Eighteen patients with idiopathic hypertrophic muscular subarotic stenosis (IHSS) have been followed for an average period of 4 years. During follow-up there has been improvement or no change in 17 patients. Two patients have improved with propranolol. No patient has had surgery, and none has died. This result is contrasted with a 19% mortality in reported surgical cases. Some of the surgical survivors have potentially serious complications, and follow-up data are sparse.
The results of this study suggest that IHSS is a disease of slow progression in most patients and that surgery should be reserved for those patients who have disabling symptoms that do not respond to medical therapy.
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PARKER BM. The Course in Idiopathic Hypertrophic Muscular Subaortic Stenosis. Ann Intern Med. 1969;70:903-911. doi: 10.7326/0003-4819-70-5-903
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Published: Ann Intern Med. 1969;70(5):903-911.
Cardiology, Valvular Heart Disease.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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