In pacing, rate modulation refers to _____
a. the ability of a pacemaker to recognize and respond to intrinsic electrical activity
b. the minimum level of electrical current needed to consistently depolarize the myocardium
c. the ability of a pacemaker to increase the pacing rate in response to physical activity or metabolic demand
d. a pacing lead with a single electrical pole at the distal tip of the pacing lead through which the stimulating pulse is delivered.
C
Rate modulation refers to a pacemaker's ability to adapt its rate to meet the body's needs caused by increased physical activity and then increase or decrease the pacing rate accordingly. A pacemaker's rate modulation capability may also be referred to as rate responsiveness or rate adaptation.
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