A rectifier for an alternating current generator is provided. The ground conductors each include a body that is to be mounted on an outer conductor of a cable, and an arm that is disposed on the body and to be connected to a ground contact of a cable connector. The sensed ventricular pressure signal and the sensed EGM signal are used to derive landmark points such as an estimated pulmonary diastolic pressure, a mean pulmonary artery pressure, a peak right ventricular pressure, and various time intervals used in computing an area or a pulse contour integral. With all call processing performed on the host computer, telephone sets attached to the host need have no native intelligence. The signaling message data may be used to determine the cause of signaling link utilization problems. Its design facilitates introduction of the suture component of the graft into the tensioning process by simplifying retention of the suture.