Huntleigh SonicaidTeam, Руководство оператора, Страница: 80 / 113

Sonicaid Team Operator’s Manual
80
7.5 Viewing trend data
To see a trend of the analysis results for up to the last four hours, press [TREND] in
the results display screen.
The Trend display screen returns to the fetal heart rate display after two minutes, or
when you press [EXIT].
T I M E 2 1 : 0 6 2 2 : 0 6 2 3 : 0 6 0 0 : 0 6
6 0 M I N B A S E L I N E 1 3 9 1 4 1 1 4 3 1 3 8
6 0 M I N S T V 7 . 8 8 . 6 8 . 1 8 . 0
6 0 M I N D E C E L 2 8 0 2 9 0 3 1 0 3 5 0
C O N F I D EN C E M H H H
U L T - Y EX I T >>>
For twins, the results shown are for the fetus on the currently selected audio channel
(ULT-Y or ULT-B/FECG). If no audio channel is selected, the default is ULT-Y.
7.6 Analysis parameters and calculations
The baseline
The analysis fits a baseline to the fetal heart rate trace through data points. Data
points are pulse intervals averaged over 1/16 minute. The baseline is fitted in such a
way as to follow slow, but not rapid, changes in the fetal heart rate.
The baseline is re-fitted at every analysis, as further information becomes available.
Confidence indicator
The confidence measure for baseline fit is based on points for possible errors:
Points Confidence
0 or 1 High
2 or 3 Medium
4 + Low
Note
: the confidence indicator defaults to Low for the first analysis at 15 minutes.