electrophysiology
how many chambers of the heart are there?
4
what is a syncopal episode?
fainting
What does you CBT have to be to have hypothermia
35 degree Celsius or less
how many bags are there on the stretcher (half mannequin doesn't count)
3
what is the equation for cardiac output
CO= stroke volume x heart rate
what are the 3 stages of heat injury from least to worst in severity
- heat cramps
- heat exhaustion
- heatstroke
what are the symptoms of deep frostbite
looks white, firm, cold, without sensation, excruciatingly painful.
when putting on a tourniquet what do you need to do
- cut pants
- state time of application
- check CSM
what is afterload?
pressure against which the heart contracts to eject blood
what does thermogenic and thermolytic mean
thermogenic- heat generating
thermolytic- heat liberating
what is the difference between wet water and dry water drowning
dry water: water enters mouth and nose
wet water: water enters lungs
what are the 4 properties of electrophysiology
2. excitability
3. conductivity
4.contracticility
how should you treat heat exhaustion
move patient to cool environment, remove excess clothing, place supine with legs elevated, hydration with sports drinks.
what is barotrauma
"squeeze"
pressure imbalance between gas- filled spaces in the body and the external atmosphere.
what are the 5 phases of action potential
phase 0: rapid depolarization
phase 1:early repolarization
phase 2:plateau
phase 3: rapid repolarization
phase 4:resting phase
what is basal metabolic rate
energy used to maintain basic physiological functions, such as breathing, circulating blood, and maintaining organ function.
what is Dalton's law
the total pressure of a mixture of gasses is equal to the sum of the partial pressure of each individual gas