Normal and nephrectomized SpragueDawley rats were treated with CoCI2 at three dose levels, 10, 20, and 25 tm/ 100 g body weight. The effects of this drug on acid-base balance were related to the production of erythropoietin. Within 6 hr after the administration of CoCI2 to normal rats, a dose-related respiratory alkalosis occurred associated with an increase in the affinity of hemoglobin for ox...

The effect of cortical spreading depression (CSD) on oxygen demand (extracellular K(+)), oxygen supply (cerebral blood flow - CBF) and oxygen balance (mitochondrial NADH) was studied by a special multiprobe assembly (MPA), during hypoxia and partial ischemia. The MPA was constructed and applied to monitor the CSD wave from its front line until complete recovery, continuously and simultaneously....

1. Oxygen consumption of A. aegypti larvae, about 210 fi\ g" tissue wet weight h, does not change when the salinity of the environment is changed. 2. The number of mitochondria in the anal papillae, a salt-absorbing epithelium, increases as the external medium is diluted. 3. There is no difference in oxygen consumption between isolated anal papillae in o, 2 and 20% sea water. The papillae repre...

Patients with aortic stenosis are susceptible to myocardial ischemia during hemodynamic stress, which may be caused by two mechanisms. First, vascular abnormalities inherent in myocardial hypertrophy may impair coronary vasodilation, limiting the ability to increase coronary blood flow to meet increased metabolic demands. Second, aortic stenosis itself may cause an imbalance between oxygen supp...

BACKGROUND Despite new anesthetic drugs and antiemetics, particularly 5-hydroxytryptamines, the incidence of postoperative nausea or vomiting remains between 20% and 70%. The authors tested the hypothesis that supplemental perioperative oxygen administration reduces the incidence of postoperative nausea or vomiting. METHODS Patients undergoing colon resection were anesthetized with fentanyl a...

Abstract The generation of spatters during laser powder bed fusion (L-PBF) Alloy 718 is known to be detrimental for the re-use feedstock and quality final product. In this study, dedicated sampling from different positions within build chamber was performed. results clearly indicate importance surface-to-volume ratio built components on degradation, as demonstrated by analysis using capsules fi...