ABC of oxygen: Diving and oxygen
نویسندگان
چکیده
منابع مشابه
ABC of oxygen. Acute oxygen therapy.
Oxygen is widely available and commonly prescribed by medical and paramedical staff. When administered correctly it may be life saving, but oxygen is often given without careful evaluation of its potential benefits and side effects. Like any drug there are clear indications for treatment with oxygen and appropriate methods of delivery. Inappropriate dose and failure to monitor treatment can hav...
متن کاملABC of oxygen: oxygen at high altitude.
The number of people travelling to the high altitude regions, especially South America, Nepal, and India, has risen enormously in the past 10 years. Without special climbing ability these trekkers can be exposed to altitudes they will not have encountered in their home countries. For example, the height of Everest base camp is 5500 m whereas the top of Mount Blanc, the highest mountain in the A...
متن کاملOxygen and the diving seal.
Diving seals are extraordinary animals. They are able to avoid hypoxia and the effects of oxygen deprivation far more efficiently than the vast majority of mammals. One of the kings of the diving world is the elephant seal (Mirounga angustirostris). These animals are capable of performing dives of up to two hours in duration (1) and have been recorded diving to depths of 1.5 kilometers (2). Per...
متن کاملABC of oxygen Oxygen transport—2. Tissue hypoxia
Delivery to organs and tissues The mechanisms controlling oxygen distribution are incompletely understood but involve a series of convective and diffusive processes. Convective oxygen transport refers to the bulk movement of oxygen in air or blood and depends on active, energy consuming processes generating flow in the tracheobronchial tree and circulation. Diffusive transport refers to the pas...
متن کاملABC of oxygen Oxygen transport—1. Basic principles
Mammalian life and the bioenergetic processes that maintain cellular integrity depend on a continuous supply of oxygen to sustain aerobic metabolism. Reduced oxygen delivery and failure of cellular use of oxygen occur in various circumstances and if not recognised result in organ dysfunction and death. Prevention, early identification, and correction of tissue hypoxia are essential skills. An u...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: BMJ
سال: 1998
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.317.7164.996