Table 2.
Factors which affect the prevalence of postoperative nausea and vomiting.
| PONV incidence | |||
|---|---|---|---|
| Variables | Yes | No | Percentage (%) |
| Type of surgery | |||
| Abdominal surgery | 127 | 87 | 59.3 |
| Orthopaedics | 32 | 139 | 18.7 |
| Neurologic | 12 | 18 | 40 |
| Caesarian Section | 10 | 117 | 7.9 |
| Maxillofacial and ENT | 18 | 12 | 6 |
| Gynaecology | 22 | 23 | 48.9 |
| Urology | 6 | 20 | 23.1 |
| Type of anaesthesia | |||
| GA with ETT | 84 | 212 | 28.4 |
| SA | 143 | 204 | 41.2 |
| History of smoking | |||
| Yes | 20 | 121 | 14.1 |
| No | 207 | 295 | 41.2 |
| Motion sickness | |||
| Yes | 185 | 39 | 29.2 |
| No | 38 | 371 | 5.9 |
| Induction agent | |||
| Propofol | 44 | 40 | 6.9 |
| Ketamine | 29 | 119 | 4.6 |
| Thiopental | 0 | 15 | 0 |
| Ketofol | 10 | 35 | 1.6 |
| Others | 141 | 201 | 22.2 |
| Intraoperative opioid use | |||
| Yes | 205 | 276 | 32.3 |
| No | 20 | 133 | 3.2 |
| Duration of anaesthesia | |||
| >60 min | 207 | 383 | 32.6 |
| <60 min | 18 | 26 | 2.8 |
| Sex | |||
| Female | 142 | 167 | 22.4 |
| Male | 83 | 242 | 13 |
| ASA | |||
| ASA I | 76 | 149 | 12 |
| ASA II | 149 | 256 | 23.5 |
| ASA III | 0 | 4 | 0 |
| BMI | |||
| Normal | 187 | 316 | 29.5 |
| Underweight | 0 | 42 | 0 |
| Overweight | 38 | 51 | 5.9 |
ASA, American Society of Anesthesiologists; ENT, ear nose and throat surgery; ETT, endotracheal tube; GA, general anesthesia; PONV, postoperative nausea and vomiting.