Specifications

7 x 9 inches (178 mm x 229 mm)
Medtronic Confidential
Refer to the “Reference man.” category in doc#163256 for Printing
Instructions.
196407001 Rev A
Single Chamber Hysteresis Operation
Programming Considerations
Hysteresis is intended for patients with a predominately normal sinus
rhythm without ventricular irritability. Some patients may experience
undesirable cardiac arrhythmias near the Hysteresis Rate (such as
bigeminal beats). Therefore, the clinician should verify adequate cardiac
support at the programmed Hysteresis Rate before programming. The
difference between the Hysteresis Rate and the programmed Lower Rate is
typically not greater than 30 ppm.
14-12 Understanding Pacemaker Operations
Hysteresis Rate Interval
V
P
V
S
V
P
V
P
V
P
Parameters:
Modes = VVI
Pacing Rate = 70 ppm (857 ms)
200 ms
Ventricular Refractory Period = 300 ms
Hysteresis Rate = 60 ppm (1000 ms)
Lower Rate Interval
Lower Rate Interval
9879EN-14_9501043EN/CTC.qxd 5/10/99 11:31 Page 14-12