NCLEX Question for earliest sign of malignant hyperthermia

NCLEX Review Question

Which of the following manifestations is often the earliest sign of malignant hyperthermia?

a.Tachycardia (heart rate above 150 beats per minute)
b.Hypotension
c.Elevated temperature
d.Oliguria

Correct Answer: A
Tachycardia (heart rate above 150 beats per minute)
Rationale: Tachycardia is often the earliest sign of malignant hyperthermia.

Hypotension
Rationale: Hypotension is a later sign of malignant hyperthermia.

Elevated temperature
Rationale: The rise in temperature is actually a late sign that develops rapidly.

Oliguria
Rationale: Scant urinary output is a later sign of malignant hyperthermia.

Posted in: MSN NCLEX