Heart Rate Recovery
Abnormal heart rate recovery is defined as a heart rate decrease of less than ——- in the first minute after exercise compared to your peak heart rate.
[A] 8 beats per minute
[B] 10 beats per minute
[C] 12 beats per minute
[D] 16 beats per minute
Abnormal HR recovery after exercise – <12 beats per minute at 1 minute [indicates Chronotropic incompetence]
Heart rate recovery -reflects cardiac autonomic function
Heart rate recovery – defined as the difference between heart rate at the immediate cessation of exercise and heart rate at a later time interval [at 60 seconds or 120 seconds]
Heart rate recovery = heart rate at [peak exercise] − heart rate at [1 or 2 minutes post exercise]
Normal heart rate recovery after exercise stress testing is considered to be ≥12 beats/min with stress ECG (where a cool-down period is performed postexercise).
During exercise echocardiography during which there is no cool-down period, a heart rate recovery of ≥18 beats/min within the first minute is considered normal.
Abnormal HRR can predict about
- – Microvascular dysfunction
- – Endothelial dysfunction
