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Variables Grade Group F Group N P-value
(n=31)(n=31)
PONV

0-2 hours

(0/1/2/3)

(19/2/8/2)

(18/5/8/0)

0.425

2-6 hours

(0/1/2/3)

(23/4/4/0)

(23/6/2/0)

0.640

6-12 hours

(0/1/2/3)

(26/5/0/0)

(27/3/1/0)

0.707

12-24 hours

(0/1/2/3)

(28/3/0/0)

(31/0/0/0)

0.238

Ondansetron 4mg

0-2 hours

(Yes/No)

(10/21)

(8/23)

0.780

Metoclopramide 10mg

0-2 hours

(Yes/No)

(2/29)

(0/31)

0.492


Table 4Comparison of difference on postoperative nausea and vomiting, and antiemetics

There were 4 levels of PONV (0-none, 1-mild, 2-moderate, 3-severe). 0: absence of nausea and vomiting, 1: light nausea symptom, 2: 1-2 gag reflexes without actual vomiting and require of antiemetics (ondansetron 4mg) and 3: experience of vomiting and continuous nausea in spite of use ondansetron 4mg. When the PONV was 3, metoclopramide 10 mg was intravenously injected. PONV – postoperative nausea and vomiting. (F - Fentanyl and N – Nefopam)