Oxygen delivery from a distance
نویسندگان
چکیده
منابع مشابه
Oxygen delivery to tissues.
For health, well perfused tissues, oxygen uptake is determined primarily by metabolic need rather than by oxygen supply. Tissue hypoxia supervenes when tissue oxygen tension (PO2) falls below a critical point, and the point where this occurs can be predicted from the systemic oxygen delivery or extraction ratio. A growing body of evidence suggest that tissue oxygen extraction may be impaired in...
متن کاملOxygen delivery through capillaries.
During physical exertion the consumption rate increases and some cells suffer from the lack of oxygen. The time-wise evolution of hypoxia is analyzed mathematically under the condition the perfusion of each capillary is constant. The domain used contains multiple non-homogeneous capillaries of different solute out. Cells surrounding capillaries may consume or preserve more oxygen than are neces...
متن کاملTranstracheal oxygen delivery.
Conventional tracheostomies have been used for many years to deliver oxygen with the patient breathing spontaneously or in conjunction with positive pressure ventilators. The insertion of a transtracheal catheter specifically to deliver oxygen, however, dates only from Heimlich's studies published in 1982.' He showed that in dogs and man a normal oxygen saturation could be maintained by the del...
متن کاملOxygen delivery and consumption: a macrocirculatory perspective.
Severe sepsis is a leading cause of death and resource use throughout the world. This article examines the relationship of oxygen delivery to oxygen use under varying conditions. Topics reviewed include the concept of the critical dissolved oxygen, concerns over shared measurement errors in obtaining estimates of oxygen consumption, seminal articles in this area, and the practice of early goal ...
متن کاملDistance Delivery: Impact on Learning
Among the various differences between asynchronous interactions and face-to-face classroom communication, one vital difference involves those that possibly affect the student’s ability to learn. The effectiveness of courses in facilitating instruction and learning is a key concern of all educators involved in or contemplating conducting distance courses. This manuscript explores the impact on l...
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ژورنال
عنوان ژورنال: Anaesthesia
سال: 2003
ISSN: 0003-2409
DOI: 10.1046/j.1365-2044.2003.03207_20.x