Table 4. Incidence of Postoperative Side Effects and Oxygen Administration after Repetitive Subarachnoid Sufentanil Application
Data are number of patients. Chi-square test.
RD = respiratory depression < 8 min−1; O2= patients with oxygen insufflation; time 1 = end of surgery until 1st injection (162 ± 79 min); time 2 = 1st until 2nd injection (198 ± 70 min); time 3 = 2nd until 3rd injection (115 ± 72 min); time 4 = 3rd until 4th injection (114 ± 55 min).