Author Question: Hikers are attempting to cross the Arizona desert with a small supply of water. The temperatures ... (Read 78 times)

haleyc112 · **on:** Jun 25, 2018

Hikers are attempting to cross the Arizona desert with a small supply of water. The temperatures cause them to sweat profusely and become dehydrated. The hikers are experiencing:

a. heat cramping.
b. heat exhaustion.
c. heat stroke.
d. malignant hyperthermia.

Question 2

When the nurse is discussing the patient's cyclical temperature fluctuation occurring on a daily basis, what term should the nurse use?

a. Thermogenesis cycle
b. Thermoconductive phases
c. Adaptive pattern
d. Circadian rhythm

qytan · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

ANS: B
Heat exhaustion results from prolonged high core or environmental temperatures, which cause profound vasodilation and profuse sweating, leading to dehydration, decreased plasma volumes, hypotension, decreased cardiac output, and tachycardia. Symptoms include weakness, dizziness, confusion, nausea, and fainting. Heat cramping is severe, spasmodic cramps in the abdomen and extremities that follow prolonged sweating and associated sodium loss. Heat cramping usually occurs in those not accustomed to heat or those performing strenuous work in very warm cli-mates. Heat stroke is a potentially lethal result of an overstressed thermoregulatory center. With very high core temperatures (>40 C; 104 F), the regulatory center ceases to function, and the body's heat loss mechanisms fail. Malignant hyperthermia is a potentially lethal complication of a rare inherited muscle disorder that may be triggered by inhaled anesthetics and depolarizing muscle relaxants.

Answer to Question 2

ANS: D
Temperature fluctuation is related to circadian rhythm, not the thermogenesis cycle, thermocon-ductive phases, or adaptive patterns.