Regulation of ocular blood flow during increases of arterial blood pressure.

Regulation of choroidal blood flow during combined changes in intraocular pressure and arterial blood pressure.

PURPOSE To test the hypothesis that human choroidal blood flow (ChBF) may depend, not only on ocular perfusion pressure (OPP), but also on absolute mean arterial pressure (MAP) and intraocular pressure (IOP). METHODS There were two study days in an open design. On the first day, OPP was varied by elevating IOP during a squatting-induced increase in MAP (28 subjects). On the second day, only t...

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...

Central regulation of arterial blood pressure.

Interpretation of Arterial Blood Gas

تجزیه و تحلیل گازهای خون اطلاعات مهمی را در مورد اکسیژناسیون شریانی و تعادل اسید - باز در دست ما قرار می دهد. در ک این داده ها بخشی اساسی از مراقبت پرستاری در اکثر بیماران است. هنوز برای بسیاری از پرستاران، تفسیر نتایج گازهای خون شریانی همانند یک جدول پیچیده بوده و در مواقعی که بررسی تمام نتایج در اسرع وقت مورد نیاز باشد، این مشکل بیشتر نمایان می شود.

Arterial Blood Oxygen Saturation during Blood Pressure Cuff-induced Hypoperfusion

Pulse oximetry has been one of the most significant technological advances in clinical monitoring in the last two decades. Pulse oximetry is a non-invasive photometric technique that provides information about the arterial blood oxygen saturation (SpO2) and heart rate, and has widespread clinical applications. When peripheral perfusion is poor, as in states of hypovolaemia, hypothermia and vaso...