Philips Expression MR400 - Minimizing ECG Waveform Noise

5‐18MonitoringECGExpressionMR400InstructionsforUse
Minimizing ECG Waveform Noise
NoisecanrenderanECGwaveformunusable,asshownintheexamplebelow.
ManycausescanresultinanoisyECGwaveform,including:
•Useofalcohol‐basedproductsduringpatientprep.
•UseofaQuadtrodeelectrodethatisexpiredordried‐out.
•UseofwrongordamagedECGcableleads.
•Improperplacementof
theQuadtrodeelectrode.
•PlacingtheMR400inside the5000gaussline.
•PlacingthewECGmoduleinsidethebore.
•MRvibrationsaffectingthewECGmodule.
• Incorrectnotchfiltersetting;seepage5‐22.
6 Selectthedesiredleadviewsetting.
I
II
III
AVL
AVR
AVF
Thesettingischanged.
Note
When presented with poor gating or heart rate performance, it may
be necessary to use the Pediatric ECG setting; see page 5-32.
7Ifthe amplitudedidnotimprove,repeatstep5andcyclethrough
theremainingleadviewsettingsuntila1mVsignalamplitudeis
attained.
8Ifthe amplitudedidnotimprove,removetheECGleadcableand
theQuadtrodeelectrode.Thenpreptheapplicationsiteagainand
applya
newQuadtrodeelectrode.
Step Action