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A pulse oximeter probe applied to a person's finger. A pulse oximeter is a medical device that indirectly monitors the oxygen saturation of a patient's blood (as opposed to measuring oxygen saturation directly through a blood sample) and changes in blood volume in the skin, producing a photoplethysmogram that may be further processed into other measurements. [4]
Normal arterial blood oxygen saturation levels in humans are 96–100 percent. [1] If the level is below 90 percent, it is considered low and called hypoxemia. [2] Arterial blood oxygen levels below 80 percent may compromise organ function, such as the brain and heart, and should be promptly addressed.
People who are predisposed to develop high-altitude pulmonary edema may present a reduction in urine production before respiratory symptoms become apparent. [ 15 ] Humans have survived for two years at 5,950 m (19,520 ft, 475 millibars of atmospheric pressure), which is the highest recorded permanently tolerable altitude; the highest permanent ...
An adult (age 15+) can have a heart rate of 60–100 bpm. ... Average respiratory rates vary between ages, but the normal reference range for people age 18 to 65 is ...
Hypoxia is a condition in which the body or a region of the body is deprived of adequate oxygen supply at the tissue level. [1] Hypoxia may be classified as either generalized, affecting the whole body, or local, affecting a region of the body. [2]
The share of people older than 50 who say they do not expect to retire has steadily increased. It was 23% in January 2022 and 24% that July, according to the study, which is conducted twice a year.
About 1 in 50 climbers who ascended Denali [6,194 metres or 20,322 feet] developed pulmonary edema, and as high as 6% of climbers ascending rapidly in the Alps [4,559 metres or 14,957 feet]. [9] In climbers who had previously developed HAPE, re-attack rate was up to 60% with ascent to 4,559 metres (14,957 ft) in a 36-hour time period, though ...
Story at a glance A new poll carried out by the University of Michigan underscores the important role adults over 50 play in providing care for seniors. Fifty-four percent of those polled said ...