Please enable JavaScript.
Coggle requires JavaScript to display documents.
HIGH ALTITUDE (Acclimatisation exam Q: 3 adaptation. (Blood components…
HIGH ALTITUDE
-
highest human habitation : Andes, 18,000ft
sea level:
PAO2=104 mmHg, HB sat 97%
very high altitude 3050m:
PAO2=67mmHg, Hb sat 90%
extreme high >6000m:
PAO2=40mmHg, Hb sat 73%
Changes
AMS
-
Symptoms: headache, nausea & vomttg, LOA, poor judgement, fatigue, insomnia
self limiting, resolve after few days
HAPE
hypoxia -->VC of pulm. arterioles --> VC greater in some part than other parts of lung --> more pulm BFlow forced through fewer unconstricted pulm BV.--> increase pulm Hydrostatic capillary P.--> increase filtration out of capillaries --> edema.
increase capillary permeability also cause edema.
HACE
Hypoxic cerebral VD --> increase capill. hydrostatic P --> fluid leak to interstitial space --> edema
increase capillary permeability also cause edema.
-
O2 % in air still 21%, not changed
-
-
-
-