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Fixed Rate Pacing: A pacing stimulus is delivered to the myocardium at a programmed fixed
rate regardless of the underlying rate and rhythm. This is also known as
asynchronous ventricular pacing.
Electromagnetic Interference (EMI): Radiated or conducted energy – either electrical or magnetic – which can
interfere with the function of the pacemaker.
Fusion Beat: Is a spontaneous cardiac depolarisation which occurs coincidentally with a
paced depolarisation. The paced and natural depolarisation waveforms
collide or fuse, causing distortion of the surface ECG complex.
Intrinsic: Inherent; belonging to or originating from the heart itself, (e.g., an intrinsic
beat refers to a naturally occurring heart beat).
Inhibited: Is any pacemaker which, after sensing a spontaneous depolarization,
withholds its pacing stimulus. Examples are AAI, VVI
Millivolt: One one-thousandth of one volt. A unit of measure for low levels of voltage.
Spontaneous, intrinsic P-waves and R-waves are measured in millivolts.
Millisecond: One one-thousandth of one second. Most pacemaker timing functions, e.g.,
pulse width and pacing intervals, are expressed in milliseconds.
No Output: Is the absence of energy delivery to the heart.
Output: The electrical stimulus or energy generated by a pulse generator and
intended to trigger a depolarization in the chamber of the heart being
paced.
Liverpool Hospital
Intensive Care: Learning Packages Intensive Care Unit
Pacemaker Learning Package LH_ICU2016_Learning_Package_Pacemaker_Learning_Package
