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After installation of central venous catheter in patients under general anesthesia, paired sample of central venous blood and right external jugular venous blood will be collected and send to central laboratory for blood gas analysis. Correlation between central venous blood and right external jugular venous blood oxygen saturation will be determined as primary outcome.
All patients undergoing surgery under general anesthesia and superior vena cava central venous catheter installation anticipated are eligible. Immediate after central venous installation, 1 ml of venous blood sample is taken from right external jugular vein and central venous catheter and send for blood gas analysis. Correlation between central venous blood and right external jugular venous blood oxygen saturation and partial pressure of carbon dioxide will be determined and prediction equation for central venous saturation is created.
Central Venous Oxygen Saturation
Department of Anesthesiology, Ramathibodi Hospital
Not yet recruiting
Published on BioPortfolio: 2019-07-16T10:38:34-0400
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The determination of oxygen-hemoglobin saturation of blood either by withdrawing a sample and passing it through a classical photoelectric oximeter or by electrodes attached to some translucent part of the body like finger, earlobe, or skin fold. It includes non-invasive oxygen monitoring by pulse oximetry.
The blood pressure in the central large VEINS of the body. It is distinguished from peripheral venous pressure which occurs in an extremity.
Impaired venous blood flow or venous return (venous stasis), usually caused by inadequate venous valves. Venous insufficiency often occurs in the legs, and is associated with EDEMA and sometimes with VENOUS STASIS ULCERS at the ankle.
A vascular anomaly characterized by a radial or wedge-shaped arrangement of dilated VEINS draining into a larger vein in the brain, spinal cord, or the meninges. Veins in a venous angioma are surrounded by normal nervous tissue, unlike a CENTRAL NERVOUS SYSTEM CAVERNOUS HEMANGIOMA that lacks intervening nervous tissue. Drainage of venous angioma is fully integrated with the body's venous system, therefore, in most cases there is no clinical signs and rare bleeding.
Anesthesia is the loss of feeling or sensation in all or part of the body. It may result from damage to nerves or can be induced by an anesthetist (a medical professional) using anesthetics such as thiopental or propofol or sevoflurane during a surgical ...
Surgery is a technology consisting of a physical intervention on tissues. All forms of surgery are considered invasive procedures; so-called "noninvasive surgery" usually refers to an excision that does not penetrate the structure being exci...
An anesthesiologist (US English) or anaesthetist (British English) is a physician trained in anesthesia and perioperative medicine. Anesthesiologists are physicians who provide medical care to patients in a wide variety of (usually acute) situations. ...