Physio-Control LIFEPAK 15 - Manual (Page 147)

THERAPY
5
©2007-2013 Physio-Control, Inc. LIFEPAK 15 Monitor/Defibrillator Operating Instructions
5-33
Noninvasive Pacing Warnings
Demand and Nondemand Pacing
The LIFEPAK 15 monitor/defibrillator can be used for either demand or nondemand (asynchronous
or "fixed rate") pacing.
Demand mode is used for most patients. In demand mode, the LIFEPAK 15 pacemaker inhibits
pacing output when it “senses” the patient’s own beats (intrinsic QRSs). In demand mode, if the
ECG SIZE is set too low to detect the patient’s beats, or if an ECG lead becomes detached so that
the ECG rhythm is not present, the pacemaker generates pacing pulses asynchronously. This means
that the pacemaker generates pacing pulses at the selected rate regardless of the patient’s ECG
rhythm.
Nondemand mode can be selected if noise or artifact interferes with proper sensing of QRS
complexes. Press OPTIONS to access nondemand mode. For more information, see "Options" on
page 3-23.
Noninvasive Pacing Procedure
ECG monitoring during pacing is performed with the ECG electrodes and patient ECG cable.
Therapy electrodes are not capable of monitoring ECG and delivering pacing current at the same
time.
Be sure to place the QUIK-COMBO therapy electrodes in the proper locations. Improper placement
of the electrodes may make a difference in the capture threshold. For example, if the electrode
placement is reversed, more pacing current may be needed to achieve capture.
WARNING
POSSIBLE INABILITY TO PACE
Using other manufacturers’ combination therapy electrodes with this device could
cause a decrease in pacing efficacy or the inability to pace because of unacceptably
high impedance levels and invalidate the safety agency certifications. Use only the
therapy electrodes that are specified in these operating instructions.
WARNING
POSSIBLE INTERRUPTION OF THERAPY
Observe the patient continuously while the pacemaker is in use. Patient response to
pacing therapy (for example, capture threshold) may change over time.