Paravertebral blockade vs general anesthesia or spinal anesthesia for inguinal hernia repair.

One hundred and fifty-five patients scheduled for inguinal hernia repair (IHR) were given the choice of either general anesthesia (GA) (n = 53) or spinal anesthesia (SP) (n = 47) or nerve stimulator guided paravertebral blockade (PVB) (n = 55). The incidence of postoperative nausea and vomiting (PONV), duration of hospital stay and need for postoperative analgesia were recorded. Apart from a difference in the age of patients in the GA group who were found to be slightly younger, all groups were found similar with regard to weight, height, duration of surgery, sex, type of hernia and ASA class. The incidence of PONV (0%) v/s 19% and 21% was significantly reduced in patients treated with the PVB compared to patients receiving SA and GA respectively. The length of hospital stay was also found to be shorter in the PVB group (mean 1.2 days) v/s SA (mean 2.4 days) and GA (mean 2.9 days). The need for supplemental postoperative analgesics was also found to be higher in both SA and GA when compared to PVB patients who were managed without any analgesics during the first 24 postoperative hours. The described technique appears to be an attractive alternative method to provide adequate anesthesia for IHR.