Liverpool Hospital
Intensive Care: Learning Packages
Intensive Care Unit
Pacemaker Learning Package
LH_ICU2016_Learning_Package_Pacemaker_Learning_Package
43 |
P a g e
Over sensing
Inhibition of the pacemaker by events the pacemaker should ignore,
e.g. EMI, T-waves, and myopotential
Causes
Inappropriate sensitivity setting
Myopotential inhibition
EMI
T-waves outside of refractory period
Dislodged/fractured lead
Electromagnetic Interference (EMI)
Radiated or conducted energy – either
electrical or magnetic
which can interfere with the function of the pacemaker in the
Demand mode
Figure 25: Dual Chamber Temporary Pacing. Operations & Troubleshooting
Should
have
paced
EMI