| Literature DB >> 5432370 |
R D Woodson, J D Torrance, S D Shappell, C Lenfant.
Abstract
The relation between degree of cardiac functional impairment and changes in hemoglobin-oxygen affinity and 2,3-diphosphoglycerate (2,3-DPG) has been studied in 39 patients with noncyanotic heart disease. A progressive decline in hemoglobin-oxygen affinity was found with worsening cardiac function as assessed by cardiac index, arteriovenous oxygen (A-V O(2)) difference, and cardiac symptoms; this alteration in hemoglobin-oxygen binding represents a significant mechanism for adaptation to the limited oxygen supply imposed by the cardiac lesion. The highly significant correlation of mixed venous blood oxygen saturation (S[unk]V(VO2)) with 2,3-DPG and the position of the oxygen dissociation curve suggests that the level of deoxygenated hemoglobin is an important in vivo regulator of hemoglobin-oxygen affinity.Entities:
Mesh:
Substances:
Year: 1970 PMID: 5432370 PMCID: PMC322607 DOI: 10.1172/JCI106351
Source DB: PubMed Journal: J Clin Invest ISSN: 0021-9738 Impact factor: 14.808