Answer to Question 1
B
Cold therapy is used to decrease blood flow to an area by promoting vasoconstriction and increases blood viscosity.
Answer to Question 2
A
Sinus bradycardia, a heart rate of 60 bpm or less, can be caused by conditions such as myocardial ischemia, electrolyte imbalances, or heart block. The condition is treated by administration of atropine or insertion of a permanent pacemaker.