Physiology Questions and Answers
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Boyle's Law Definition - ANSWER-"Boyle's = Balloon = Barotrauma"
The pressure of a gas is inversely proportional to the volume of a gas at a constant
temperature.
P1V1 = P2V2
Boyle's Law Affects - ANSWER-ETT Cuffs
MAST trousers
Air Splints
IV drip rates (increases rate)
Boyle's Law Example - ANSWER-If the patient has a Pneumocephalus (air inside the
cranial vault after trauma, usually from a direct blow, associated with depressed skull
fractures) intracranial pressure will increase
Arterial Gas Embolism (AGE)
Dalton's Law Definition - ANSWER-"Dalton's Gang"
Law of Partial Pressures (this is an additive gas law)
The total pressure of a gas mixture is the sum of the partial pressures of all the gasses
in the mixture.
PT = P1 + P2 + P3 + ... +Pn
Dalton's Law Affects - ANSWER-Responsible for soft tissue swelling at altitude (uptake
of inert gasses into tissue)
Charles' Law Definition - ANSWER-"Charging Charles"
At a constant pressure, the volume of gas is directly proportional to the absolute
temperature of the gas.
V1 / T1 = V2 / T2