User's Manual
52 Operator’s Manual ZM-940PA/941PA
Position 3
In this position, the respiration waveform is optimum, but the ECG lead is unusual.
R or RA F or LL
Right midaxillary at the
horizontal level of V4
Fifth intercostal space on the
left midaxillary line, V6
Position 4
Inthisposition,therespirationmeasurementisinuencedbytheimpedancevariationofthe
abdomen, so the cardiac pulse wave included in the respiration wave is reduced. Note that the
waveform is inverted in phase compared with the chest movement (the waveform goes down during
inspiration).ItisdifculttomeasuretheECGatthesametime.
R or RA F or LL
Lowest rib on the right
anterior axillary line
Lowest rib on the left anterior
axillary line