Intended use–ecg – Welch Allyn Vital Signs Monitor, Propaq Encore - Quick Reference Guide User Manual
Page 36
30
Patient monitoring
Welch Allyn Propaq Encore Vital Signs Monitor
Intended use–ECG
The Propaq Encore is intended for ECG monitoring of either a five-lead or three-lead
configuration, including the Marriott configuration 1 (MCL1 requires all three electrodes).
The five lead configuration can derive one of seven user-selected signals, Lead I, II, III,
aVR, aVL, aVF, or V.
The monitor will automatically determine if only three lead wires are connected, and will
automatically reduce the number of selectable leads to three (I, II, III). If four-wire ECG
cables are used, they will be handled as if they were three-wire cables.
The Propaq Encore 200 series does not have automated ST segment monitoring,
although with ECG set for extended bandwidth, ST segments may be accurately
displayed and printed.
The Propaq Encore ECG’s bandwidth is 0.5-40 Hz in Monitor Mode and 0.05-40 Hz in
Extended Mode. Monitor Mode is useful to minimize baseline wander due to respiration
or other artifact. However, in Monitor Mode, ST segments can be distorted, potentially
causing underestimation of ST elevation and overestimation of ST depression. Always use
Extended Mode when observing ST segment morphology on the display or printer.
The Propaq Encore can be used during procedures using electrosurgical machines and
defibrillators. However, even though the ECG channel contains electrosurgical
interference suppression (ESIS) circuitry, noise artifact may be displayed on the ECG trace
while an electrosurgical device is in use. This will vary depending on ECG electrode
placement and the operative site.
Even though the Propaq Encore contains fully isolated patient-connected circuitry, it has
not been specially designed for direct cardiac application.
The Propaq Encore can be used on patients with pacemakers. See
Encore with pacemaker patients”
WARNING The Propaq Encore monitor does not have automated arrhythmia
analysis, therefore, some ventricular tachycardias and ventricular fibrillation may
not be interpreted correctly and may display an inaccurate heart rate.
WARNING High-intensity radio frequency (RF) energy from external sources,
such as an improperly connected electrosurgical unit, can induce heat into
electrodes and cables which can cause burns on the patient. Reading errors and
damage to equipment may also result. This hazard can be reduced by (1) avoiding
the use of small ECG electrodes, (2) selecting ECG electrode attachment points
remote from the surgical site and from the electrosurgical return electrode, (3)
using electrosurgical return electrodes with the largest practical contact area, and
(4) assuring proper application of the electrosurgical return electrode to the
patient.
WARNING Verify patient mode. Incorrect patient mode may result in inaccurate
heart rates and inappropriate alarm settings.