[Influence of mixed venous blood PO2 on the pulmonary arterial pressure in chronic obstructive pulmonary disease (COPD): correlations in 128 patients].
Hypoxic vasoconstriction is one of the main determinants of pulmonary arterial hypertension in C.O.P.D. The authors study in two groups of respiratory insufficiency patients (82 C.O.P.D. and 46 non-C.O.P.D.) correlations between mean pulmonary arterial pressure (PAP) and gasometric values. They show that: --no correlation exists in the patients who suffer from a restrictive syndrome; --in the obstructive patients, correlations are poorer between PAP and PaO2 or PvO2 than between PAP and a factor made up of these two parameters, according to the percentage of their theoretical values.
D001794:Blood Pressure; D006801:Humans; D006976:Hypertension, Pulmonary / Q000503:physiopathology*; D008173:Lung Diseases, Obstructive / Q000097:blood / Q000503:physiopathology*; D010100:Oxygen / Q000097:blood*; D010313:Partial Pressure; D011651:Pulmonary Artery / Q000502:physiology; D014661:Vasoconstriction
D010100:Oxygen
Influence de la PO2 du sang veineux mêlé sur la pression artérielle pulmonaire dans les bronchopathies chroniques obstructives (B.P.C.O.): corrélations chez 128 malades.