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Anesthesia-Thermoregulation

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disulfidebond007's version from 2016-08-12 05:01

Section

Question Answer
What is Hypothermia?Core body temp less than 36 C
What are the mechanisms of heat loss?Radiation, Conduction, Convection, Evaporation
Phases of heat lossPhase 1- redistribution phase, 1st hour of surgery, 1-3 degree drop. Phase 2-Linear phase, 2-3 hours into surgery, gradual, linear decline of heat. Phase 3-Plateau phase-equilibrium, minimal heat loss
What mechanism results in the greatest amount of heat loss in the OR?Radiation, ambient room temperature
What factors contribute to heat loss? *ambient room temperature, length of procedure, type of anesthesia (general or regional), type of surgery, anesthesia technique, age/habitus
What is the most effective waay to prevent hypothermia?Increase ambient room temp, 70F/21C
When is body temperature loss the greatest?During the first hour of surgery (Phase 1)
What is the best method to avoid perioperative heat loss?Forced warm air
What temp do PRBCs need to be at to avoid hypothermia?37 C
When should you monitor temp?Monitor changes that are; 1. Anticipated 2. Intended 3. Suspected 4. Pediatriac
What physiological changes occur as a result of hypothermia?metabolic depression, altered cardiac function, change in LOC, longer half life of drugs
What is the difference between general anesthesia and regional anesthesia in regard to heat loss?General- The core is vasoconstricted and the periphers are vasodilated. Regional- Core is dilated and peripheries are constricted
Ways to evaluate core temp?pulmonary artery, distal esophageal, tympanic, nasopharnyx
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