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- W2912092150 abstract "To the Editor: In the clinical conference on hypertrophic cardiomyopathy Chest (74:659-670, 1978), Dr. Goldstein states that: “Midsystolic closure of the aortic valve can occur in both hypertrophic cardiomyopathy and discrete subaortic stenosis and, hence, is not particularly useful in differentiating these two diseases” (p 661). This statement is inaccurate. In the obstructive form of hypertrophic cardiomyopathy the aortic valve reacts with a midsystolic partial closure to the diminishing flow through it.1Chahine BA Raizner AE Nelson J et al.Mid systolic closure of aortic valve in hypertrophic cardiomyopathy.Am J Cardiol. 1979; 43: 17-23Abstract Full Text PDF PubMed Scopus (13) Google Scholar In discrete subaortic stenosis, the aortic valve reacts to the jet passing through the opening in the membrane, not to the amount of stenosis. Thus, the typical echographic picture of the aortic valve in discrete subaortic stenosis (Fig 1) is an abrupt partial closure which occurs earlier in systole than the one found in obstructive hypertrophic cardiomyopathy2Krajcer Z Orzan F Pechacek LW et al.Early systolic closure of the aortic valve in patients with hypertrophic subaortic stenosis and discrete subaortic stenosis.Am J Cardiol. 1978; 41: 823-829Abstract Full Text PDF PubMed Scopus (17) Google Scholar and is even seen in müd cases. This is followed by a coarse flutter of both aortic valve leaflets, which lasts to the end of the systole. This kind of flutter is not seen in hypertrophic cardiomyopathy. Furthermore, it is most probably the cause of the development of aortic insufficiency in these patients, irrespective of the amount of obstruction.3Erijman M Glaser J Vidne B Pre- and postoperative echocardiograms in patients with discrete type subaortic stenosis.in: 3rd Symposium on Echocardiology, Rotterdam. June, 20-22, 1979Crossref Google Scholar" @default.
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- W2912092150 date "1980-03-01" @default.
- W2912092150 modified "2023-10-05" @default.
- W2912092150 title "Hypertrophic Cardiomyopathy" @default.
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- W2912092150 doi "https://doi.org/10.1378/chest.77.3.457-a" @default.
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