Effect of coronary artery occlusion on regional arterial and venous O2 saturation, O2 extraction, blood flow, and O2 consumption in the dog heart.
نویسندگان
چکیده
منابع مشابه
THE EFFECT OF ARTERIAL O2 SATURATION AND HE ART RATE ON BLOOD PRESSURE DURING HYPOXIA
A periodic increase in blood pressure (BP) occurs during apneic episodes in patients with obstructive sleep apnea (OSA). Several factors including hypoxemia and an increase in heart rate (HR) were reported to be responsible for this increased BP. To examine the contribution of these two factors in increasing BP, 35 healthy male subjects (mean age±SD= 23.64±3.80) were studied in three experi...
متن کاملArterial CO2, myocardial O2 consumption, and coronary blood flow in the dog.
We determined the effect of changes in arterial Pco2 on the relationship between O2 delivery (DO2) and consumption (MVO2) by the myocardium of anesthetized dogs. Left anterior descending coronary blood flow (CVF), arterial and great cardiac vein O2 content (GCVO2), and arterial pressure were measured. MVO2 was raised by infusing various doses of isoproterenol (ISO) or norepinephrine (NE) into t...
متن کاملeffects of pain relief on arterial blood o2 saturation
background pain management with the use of sedatives and analgesics has several advantages and few complications or side effects. objectives in this study, we planned to evaluate the effects of pain control on oxygen saturation independent of other factors, such previous cardio-pulmonary conditions or respiratory rate. patients and methods sixty-seven adult patients with direct trauma to extrem...
متن کاملthe effect of arterial o2 saturation and he art rate on blood pressure during hypoxia
a periodic increase in blood pressure (bp) occurs during apneic episodes in patients with obstructive sleep apnea (osa). several factors including hypoxemia and an increase in heart rate (hr) were reported to be responsible for this increased bp. to examine the contribution of these two factors in increasing bp, 35 healthy male subjects (mean age±sd= 23.64±3.80) were studied in three experiment...
متن کاملEndotoxemia decreases matching of regional blood flow and O2 delivery to O2 uptake in the porcine left ventricle.
Heterogeneity of regional coronary blood flow is caused in part by heterogeneity in O(2) demand in the normal heart. We investigated whether myocardial O(2) supply/demand mismatching is associated with the myocardial depression of sepsis. Regional blood flow (microspheres) and O(2) uptake ([(13)C]acetate infusion and analysis of resultant NMR spectra) were measured in about nine contiguous tiss...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Circulation Research
سال: 1980
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.47.3.400