Table 2 Comparative efficacy of PONV prevention strategies [1, 33, 41]
Intervention strategy | RRR (%) | NNT | Common adverse reactions | Level of evidence |
|---|---|---|---|---|
5-HT3 antagonist | 25–30 | 4–5 | Headache, constipation | Ia (Cochrane) |
Dexamethasone | 20–25 | 5–6 | High blood sugar and insomnia | Ia |
Acupressure (PC6) | 15–20 | 6–8 | Local skin irritation | Ib(RCT) |
Isopropanol infusion | 30–35 | 3–4 | Hypotension, injection pain | Ia |