15-10
FM5000C - FM5000PLUS
Maternal/Fetal Monitor
User Manual
For 12-lead ECG cable, the available calculation channel includesI,II,V1, V2, V3, V4, V5 and V6.
(a) Select ECG parameter areaand the [ECG SETUP] menu will be displayed;
(b) Select[HR CHANNEL]and select the lead from the pop-up list box.
15.6.6
Setting the Notch
Notch inhibits the 50Hz or 60Hz frequency components of signals collected. When the filter mode is not the
diagnostic mode, the system automatically enables the notch; while when filter mode is the diagnostic mode,
the user should select to enable or disable the notch fucntionaccording to the need.
(a) Select ECG parameter areaand the [ECG SETUP] menu will be displayed;
(b) Select [NOTCH] and select [ON] or [OFF] to enable or disable the notch function respectively.
15.7 ST Segment Analysis
15.7.1
About ST Segment Analysis
The normal heart beat and atrioventricular pacing are used for ST segment analysis. The monitor analyzes
these heart beats and calculates the elevation and depression of the ST segment. The monitor can display the
information in ST numerical form. It can continuously monitor all available leads. For ST-segment analysis,
the ECG waveform is not required to be displayed on the monitor. For ST analysis,it usually uses a special
filter which ensures diagnostic quality. If you use the diagnostic filter mode to monitoring ECG, the ST
segment of the ECG wave will be slightly different from the ST segment in the ST fragment with the
same waveform. In order to diagnostically assess the ST-segment, please always switch to ST filter mode.
You can also select the monitor or surgical filter mode, but ST-segment data will have a serious distortion.
ST segment analysis can measure the elevation or depression of the specified ST-segment of a lead.
Meaning of ST-segment measurement: A positive number indicates the elevation, a negative number
indicates depression
Measurement range of the ST segment: -2.0 ~ +2.0 mV.
15.7.2
Impact on ST-segment
Some clinical conditions makeit difficult to get reliable ST monitoring, such as:
Unable to obtain the leads with low noise;
The irregular baseline resulting from arrhythmia such as atrial fibrillation / atrial flutter;
The patient is continuous ventricular pacing
