The purpose of this study was to investigate the potential responses of the cardiovascular system and regional blood flow to hypoxic hypoxia (BB) and to carbon monoxide (CO)-induced hypoxia (COH). Ten anesthetized cats were studied under two nonnoxic (control: CONT) and two hypoxic conditions. Four types of radioactive micro spheres were used to measure regional blood flow during CONT an...

It is well known that the metabolic factors play an important role in the regulation of angiogenesis. Increased metabolic activity leads to decreased oxygen levels and causes tissue hypoxia. Hypoxia starts different signals to stimulate angiogenesis and promotes oxygen delivery to tissues. It has been suggested that released adenosine from hypoxic tissues plays a vital role in angiogenesis. ...

Background: Hypoxic preconditioning refers to a certain intensity and time of hypoxic exposure before stress, which makes the body produce endogenous protection enhance body’s tolerance subsequent more severe hypoxia. However, there are few studies on effects combined with altitude training immune system athletes.

background: the rationale was to develop an ablation approach to destroy regions of tumor resistant to radiation and thus reduce the time required for whole tumor ablation, while improving overall tumor control after radiotherapy. materials and methods: the system is composed of a micro positron emission tomography (mpet), 7t magnetic resonance imaging (mri), and a customized mri-compatible foc...

BACKGROUND Hypoxia has a dual effect on ventilation: an initial period of hyperventilation, the acute hypoxic response, is followed after 3-5 min by a slow decline, the hypoxic ventilatory decline. Because of hypoxic ventilatory decline, subsequent acute hypoxic responses are depressed. In this study, the influence of a sedative concentration of propofol on ventilation was studied if hypoxia wa...

* Department of Pediatrics, Weill Cornell Medical College, New York, NY † Department of Public Health, Weill Cornell Medical College, New York, NY ‡ Department of Medicine, Weill Cornell Medical College, New York, NY § New York-Presbyterian Hospital, New York, NY ** Health Information Technology Evaluation Collaborative, New York, NY †† Weill Cornell Physicians Organization, New York, NY ‡‡ Tac...

One feature of the National Health Service Act, 1946, to receive almost unanimous approval from the medical profession, was the power given to local authorises to provide, equip and maintain health centres. So far no new health centre, Wit specifically for the purpose has been opened, and the health centre at Leinster Avenue which will come into operation this month (April 1952) will be the fir...

Effects of acute systemic hypoxia on the cardiovascular system (CYS) and respiration of spontaneously breathing cats were studied in two conditions. 1): Hypoxic air (6-8% 02 in N2) was given to the animal to induce systemic hypoxia for 20 minutes. Hyperventilation at this condition lowered arterial C02 tension (PaC02 hypocapnia). 2): In the second run, induction of hypocapnia was prevented ...