between 68 and 73 degrees F with low humidity (20%-60%)
injecting gas or air into the cavity before surgery to separate organs and improve visualization
purpose of anesthesia
block nerve impulse transmission, suppress reflexes, promote muscle relaxation, achieve a controlled level of unconciousness.
reversible loss of consciousness induced by inhibiting nueronal impulses in several areas of the CNS.
Can be achieved with a single agent or a combination of agents.
**used most often in surgery of the head, neck, upper torso, and abdomen**
3 types of general anesthesia
Inhalation (most controllable), Intravenous, and Balanced
Begins in the skeletal muscle exposed to a specific agents, causing increased calcium levels in muscle cells and increased muscle metabolism. Serum calcium and potassium levels are increased, as is metabolic rate, leading to acidosis, dysrythmias, and high body temperature.
indications of MH
tachycardia, dysrythmia, muscle rigidity, hypotension, tachypnea, skin mottling, cyanosis, myoglobinuria, unexpected rise in the end tidal carbon dioxide level with a decrease in O2 saturation.