Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
High-Output Heart Failure as a Cause of Pulmonary Hypertension
Hiroyuki OKURAYoshiki TAKATSU
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1994 Volume 33 Issue 6 Pages 363-365


Two cases of high-output heart failure associated with pulmonary hypertension are presented. In a 32-year-old man with hyperthyroidism, pulmonary hypertension subsided after antithyroid therapy. Increased pulmonary blood flow and elevated left ventricular end-diastolic pressure were suspected as the causes of pulmonary hypertension. In a 51-year-old man with cardiac beriberi, the pulmonary hypertension improved after thiamine administration. We suspect that increased pulmonary blood flow, elevated left ventricular end-diastolic pressure, and probably pulmonary vasoconstriction were the causes of pulmonary hypertension. Thus, high-output heart failure should be considered as a possible cause of pulmonary hypertension and right ventricular failure.
(Internal Medicine 33: 363-365, 1994)

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