Do relaxation techniques help a patient in a cardiac rehabilitation program?

Relaxation: Relaxation techniques are excellent for dealing with responses to psychological stressors so as to blunt the physiologic chemical response to such a stimulus thus decreasing the "flight or fight" increase in heart rate and blood pressure inherent to such.

Yes I think so: Relaxation and biofeedback help lower adrenaline levels, which is beneficial for a cardiac patient. Likewise, cardiac rehabilitation improves physiology and lowers overall sympathetic nervous system activity. This reduces risk for heart attack, stroke, and arrhythmias.