About this trial
This study aims to compare the effect of ondansetron lozenge and intravenous for prevention of shivering in tonsillectomy.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age from 4 to 15 years.
Both sexes.
American Society of Anesthesiology (ASA) physical status I-II.
Children undergoing tonsillectomy under general anesthesia.
Disqualifiers
Allergy to ondansetron.
History of sleep apnea.
Cardiac and respiratory diseases.
Upper respiratory tract infection.
Trial design
Parallel
Treatments tested in this trial
Ondansetron lozenge
DrugPatients will receive ondansetron lozenge 4 mg (Ondalenz ©), 2 hours before surgery.
Ondansetron intravenous
DrugPatients will receive 4 mg of ondansetron IV just before the surgery.
Treatment groups
Trial outcomes
Primary outcomes
Incidence of shivering
Incidence of shivering will be recorded and graded by using the scale validated by Crossley and Mahajan. Crossley and Mahajan grade 0, no shivering; grade 1, no visible muscle activity, but one or more of the following: piloerection, peripheral vasoconstriction, or peripheral cyanosis (other causes excluded); grade 2, muscular activity in only one muscle group; grade 3, moderate muscular activity in more than one muscle group but not generalized shaking; grade 4, violent muscular activity that involves the whole body.
Secondary outcomes
Incidence of postoperative nausea and vomiting
Incidence of postoperative nausea and vomiting (PONV) will be recorded.
Core temperature
Core temperature will be recorded.
Peripheral temperature
Peripheral temperature will be recorded.
Incidence of adverse effects
Incidence of adverse effects such as bradycardia, hypotension, respiratory depression, or any other complication will be recorded.
Sponsors and contacts
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