Effect of Heart Irregularity on Left Ventricular and Arterial Peak Systolic Pressures in Aortic Stenosis

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Abstract
In aortic stenosis, systemic arterial peak systolic pressure may remain relatively steady in the face of marked, arrhythmia-induced, variations in left ventricular peak systolic pressure. A possible basis for this phenomenon is presented. It is suggested that beat-to-beat variations in the systolic pressure gradient across the aortic valve region may not always reflect variations in stroke volume.

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