Patients lie on a padded table in a treatment room as shown in the adjoining picture. Three electrodes are applied to the chest to record a constant ECG reading. A finger sensor, called a plethysmograph, records a tracing that represents blood pressure. A set of cuffs is wrapped around the calves, thighs, buttocks and arms. The system uses an ECG signal to electronically synchronise the inflation and deflation of the cuffs. Patients experience a sensation of a strong "hug" moving upwards from the calves to thighs to buttocks during inflation followed by the rapid relief of pressure on deflation. During IECP® treatment, a display shows an ECG signal and a blood pressure tracing. An IECP® therapist uses these readings to time Counterpulsation and monitors treatment.