High Altitude and Diving Flashcards
What is chronic mountain sickness (CMS)?
polycythemia with PHTN due to high altitude resistance
What is the tx for decompression sickness/the bends?
recompression in a hyperbaric chamber
Atmospheric (or barometric) pressure increases by 1 atm for every ____ meters of depth in sea water.
10
What are the s/s of Acute Mountain Sickness (AMS)?
- headache
- nausea
- malaise
- insomnia
- anorexia
What is pulmonary barotrauma?
pneumomediastinum or pneumothorax caused by gas pushed into the interstitium
What are the s/s of High Altitude Cerebral Edema (HACE)?
- ataxia
- confusion/combativeness
- hallucinations
- coma
- (presents similarly to intoxication)
What are the s/s of pneumomediastinum?
- substernal chest pain
- cough
One of the earliest physiological changes that occurs when humans are exposed to acute hypoxia is to ____.
increase blood flow (cardiac output)
What is the value of water vapor pressure?
47
In High Altitude Pulmonary Edema (HAPE) a main feature is _____ in response to acute hypoxia.
pulmonary hypertension (PHTN)
Increased VE can last for _____, and is thus the most useful short term adaptive response to high altitude exposure.
days and weeks
This is a non-cardiogenic pulmonary edema- a life threatening complication of altitude exposure.
High Altitude Pulmonary Edema (HAPE)
What are the s/s of pneumothorax?
- dyspnea
- unilateral chest pain
- cough
_____ can last for days and weeks, and is thus the most useful short term adaptive response to high altitude exposure.
Increased VE
This is pneumomediastinum or pneumothorax caused by gas pushed into the interstitium.
pulmonary barotrauma
What is shallow water blackout?
breath holding dives that result in loss of consciousness
What is the barometric pressure in Denver?
630
What is High Altitude Pulmonary Edema (HAPE)?
- a non-cardiogenic pulmonary edema
- a life threatening complication of altitude exposure
The longer and deeper the dive, the more concern for _____.
decompression sickness/the bends
______ is caused by an increase in brain volume in response to hypoxia that may be due to cerebral edema and/or increased cerebral blood flow/intravascular volume.
Acute Mountain Sickness (AMS)