The Effect of Administration of Ketamine and Paracetamol Versus Paracetamol Singly on Postoperative Pain, Nausea and Vomiting After Pediatric Adenotonsillectomy.
BACKGROUND
Tonsillectomy is one of the most common surgeries in children and posttonsillectomy pain and agitation management is a great challenge for anesthesiologists.


OBJECTIVE
The aim of this study was to compare the efficacy of a single dose of ketamine combined with paracetamol with paracetamol alone in the management of postoperative pain in tonsillectomy.


METHODS
In this study, the subjects were randomly allocated into the two groups: the ketamine and control. Intravenous paracetamol infusion (15 mg/kg) was started 15 minutes before the end of surgery in both groups, continued with the IV injection of ketamine (0.25 mg/kg) in the ketamine group and an equal volume of saline in the control group. Using the children's hospital of eastern Ontario (CHEOPS) pain scale, pain and agitation score and also the incidence of nausea and vomiting after the surgery were recorded in 0.5, 6 and 12 hours after the operation. Data were analyzed using SPSS software version 16 and P value less than 0.05 was considered as statistically significant in all cases.


RESULTS
There was no significant difference between the two groups considering demographic data (age, sex distribution, weight and height). The CHEOPS pain scales were significantly lower in the ketamine group compared to the control group at 0.5 and 6 hours after the surgery (P = 0.003 and P = 0.023, respectively). There was no significant difference in the CHEOPS scale at 12 hours after the surgery, dose of adjuvant analgesic and the incidence of nausea and vomiting after the surgery between the two groups.


CONCLUSIONS
According to the results of the current study, postoperative analgesia in children was improved in the ketamine group. Therefore, for better management of posttonsillectomy pain, low-dose ketamine administration with paracetamol is recommended.
Department of Anesthesiology, Hamadan University of Medical Sciences, Hamadan, Iran.
Hosein
H
Kimiaei Asadi
Department of Anesthesiology, Hamadan University of Medical Sciences, Hamadan, Iran.
Mahshid
M
Nikooseresht
Department of Anesthesiology, Hamadan University of Medical Sciences, Hamadan, Iran.
Lida
L
Noori
Department of Otolaryngology, Hamadan University of Medical Sciences, Hamadan, Iran.
Fatholah
F
Behnoud
Ketamine; Pain; Paracetamol; Tonsillectomy