Umar et al reported an obstetric early warning score (EWS) for use in a low resource setting. This can help to identify a woman at increased of deterioration. The authors are from the Liverpool School of Tropical Medicine.
Patient selection: obstetrical patient
Parameters:
(1) body temperature in °C
(2) pulse rate in beats per minute
(3) respiratory rate in breaths per minute
(4) systolic blood pressure in mm Hg
(5) urine volume in mL per hour
(6) mode of birth
(7) consciousness level (AVPU)
Parameter
Finding
Points
body temperature
< 35°C
2
35 to 35.9°C
1
36 to 37.9°C
0
>= 38°C
2
pulse rate
< 40 beats/min
2
40 to 49 beats/min
1
50 to 99 beats/min
0
100 to 120 beats/min
1
> 120 beats/min
2
respiratory rate
<= 10 breaths/min
2
11 to 20 breaths/min
0
21 to 30 breaths/min
1
> 30 breaths/min
2
systolic blood pressure
< 90 mm Hg
2
90 to 99 mm Hg
1
100 to 149 mm Hg
0
150 to 160 mm Hg
1
> 160 mm Hg
2
urine output
< 20 mL/h
2
20 to 30 mL/h
1
> 30 mL/h
0
mode of birth
vaginal
0
cesarean
2
consciousness
alert (A)
0
responds to voice (V)
1
responds to pain (P)
2
unresponsive to pain (U)
2
total score =
= SUM(points for all 7 parameters)
Interpretation:
• minimum score: 0
• maximum score: 14
• A score >= 5 was associated with severe maternal outcome.
Performance:
• The area under the ROC curve is 0.92.
To read more or access our algorithms and calculators, please log in or register.
