Fluke Biomedical MPS450 - Manual (Page 48)

MPS450
Operators Manual
2-16
Table 2-10. Numeric Codes for PVC-Waveform Settings
PVC-Waveform Setting Numeric Code
PVC1 LEFT VENT 037
PVC1 LV EARLY 038
PVC1 LV R ON T 039
RIGHT VENT 040
PVC2 RV EARLY 041
PVC2 RV R ON T 042
Multifocal PVCS
A sequence that includes a left-focus PVC, followed by two normal beats, followed by a
right-focus PVC, followed by a normal rhythm at 80 BPM
Multifocal PVCs are premature ventricular contractions that originate in different
ectopic-pacemaker sites throughout the ventricles. These PVCs, which exhibit different
size and shape elements, are characterized by the absence of a P wave (due to the lack of
any atrial-pacemaker activity).
To simulate a multifocal-PVC condition, the MPS450 alternates the PVCs between type
1 (left focus) and type 2 (right focus), with a sequence occurring as a one-time event: a
left-focus PVC, followed by two normal beats, followed by a right-focus PVC, followed
by normal rhythm at 80 BPM.
Action in the Menu-Control Mode
1. Press the top-menu key labeled ARRHY.
2. Select PREM.
3. Scroll to the LCD screen MULTIFOCAL PVCS.
4. Select RUN. On the LCD screen, RUN flashes to indicate that the sequence for a
multifocal-PVC simulation is running as a one-time event. When the simulation
completes, the command INSRT displays on the screen.
5. To repeat the sequence, select INSRT.
Alternatively, in the Numeric-Control Mode, press the number keys 043, and select
RUN. (To repeat the sequence, select RUN again.)
PVCS: 6, 12, or 24 Per Minute
PVCs scattered among normal beats AT 80 BPM, so that PVCs take place 6, 12, or 24
times every minute.
Premature ventricular contractions may occur independently (even in healthy
individuals), as well as in groups and/or for a number of times every minute.
The MPS450 sets the number of PVCs that occur per minute during an otherwise-normal
sinus rhythm (80 BPM), to simulate conditions of six PVCs per minute, twelve PVCs per
minute, or twenty-four PVCs per minute. In this category the MPS450 simulates all
PVCs as type 1, left-ventricular focus, within a normal sinus QRS.
Action in the Menu-Control Mode
1. Press the top-menu key labeled ARRHY.
2. Select VENT to display the following LCD screen: