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Two patients who had idiopathic hypertrophic subaortic stenosis (IHSS) and type A ventricular preexcitation were studied and showed variations of the subvalvular flow gradients. The increase in subvalvular gradient, occurring at a time when preexcitation developed, was associated with significant increase of the systolic murmur and the systolic anterior motion of the mitral valve. In patient 1, the significant increase in subvalvular gradient during ventricular preexcitation was also confirmed by catheterization of the left side of the heart. The increase of the gradient with the development of the ventricular preexcitation was apparently due to decreased end-diastolic volume. The importance of ventricular volume considered as a variable affecting outflow tract gradient in idopathic hypertrophic subaortic stenosis is emphasized.
N Z Kerin, and
R Blonder, and
W J Wajszczuk, and
M Rubenfire
June 1968,
Nordisk medicin,
N Z Kerin, and
R Blonder, and
W J Wajszczuk, and
M Rubenfire
April 1975,
Acta medica Scandinavica,
N Z Kerin, and
R Blonder, and
W J Wajszczuk, and
M Rubenfire
August 1968,
Kyobu geka. The Japanese journal of thoracic surgery,
N Z Kerin, and
R Blonder, and
W J Wajszczuk, and
M Rubenfire
January 1968,
Cardiovascular Research Center bulletin,
N Z Kerin, and
R Blonder, and
W J Wajszczuk, and
M Rubenfire
April 1963,
The Journal of the Arkansas Medical Society,
N Z Kerin, and
R Blonder, and
W J Wajszczuk, and
M Rubenfire
February 1962,
Schweizerische medizinische Wochenschrift,
N Z Kerin, and
R Blonder, and
W J Wajszczuk, and
M Rubenfire
March 1970,
Journal of the Mississippi State Medical Association,
N Z Kerin, and
R Blonder, and
W J Wajszczuk, and
M Rubenfire
January 1982,
Voenno-meditsinskii zhurnal,
N Z Kerin, and
R Blonder, and
W J Wajszczuk, and
M Rubenfire
January 1980,
Terapevticheskii arkhiv,
N Z Kerin, and
R Blonder, and
W J Wajszczuk, and
M Rubenfire
July 1981,
American family physician,
