Tan et al reported a risk score for postoperative nausea and vomiting following cesarean delivery. The authors are from Duke University and University of California San Francisco.
Patient selection: cesarean delivery with intrathecal morphine
Parameters:
(1) smoking status
(2) history of postoperative nausea and vomiting (PONV) after Cesarean delivery and/or morning sickness
Parameter
Finding
Points
smoking status
nonsmoker
1
smoker
0
PONV after CS or morning sickness
no
0
yes
1
score =
= SUM(points for both parameters)
Interpretation:
• minimum score: 0
• maximum score: 2
Score
PONV
0
22%
1
45%
2
63%
Performance:
• The area under the ROC curve is 0.63 and was slightly better than the Apfel score.
The authors recommended routine prophylactic anti-emetic therapy for patients since predictive scores are suboptimal.
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