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
The printout lists the present parameter settings on which the diagram is
based and includes definitions of the lines, labels, and symbols used in the
diagram.
Interpreting the Diagram
Each Marker Channel Diagram is formed by a series of lines and symbols
that depict pacemaker operation. The pacing mode in effect is printed above
the ECG trace at the top of the chart.
Atrial and Ventricular Baselines — The diagram is formed along two
parallel baselines labeled “A” and “V.” Symbols depicting atrial activity
appear along the top side of baseline A; symbols depicting ventricular
activity appear along the bottom side of baseline V. Sloped lines appearing
between the two baselines depict the timing relationship between atrial and
ventricular events.
Pace and Sense Markers — Short vertical lines extending upward from
baseline A and downward from baseline V are the event markers received
via Marker Channel telemetry. Each marker is labeled according to the
event it represents.
P
(Pace) Output of a pacing stimulus.
S
(Sense) A sensed event.
R
(Refractory Sense) An event sensed within the refractory period.
ER
(Error) A marker that could not be decoded because of interference
or interrupted telemetry.
Supplemental Marker Labels — Supplemental labels indicate when a
marker is the result of one of the following conditions:
Act.
An activity-driven pace.
Safe
A ventricular safety pace.
PVC
A pacemaker-defined premature ventricular contraction.
NCAP
A non-competitive atrial pace.
P
P
P
P
P
P
P
P
A
V
P
P
A
V
P
P
Act.
5-16 Using the Programmer
P
P
A
V