Evaluating the effect of laryngotracheal spray with Mckenzie method for the ease of pediatric rigid bronchoscopy

Abstract

Tabriz Children's Hospital is a referral center for rigid bronchoscopy that uses intravenous or inhaled drugs for anesthesia. The use of local anesthetic solution will reduce the cost and the dose of intravenous-inhaled drugs and facilitate bronchoscopy. We decided to investigate the effects of anesthesia on laryngotracheal space with Mckenzie method to facilitate pediatric rigid bronchoscopy.Materials and Methods: In the present double-blind clinical trial study, 64 patients who underwent rigid bronchoscopy in Tabriz Children's Hospital were randomly divided into two groups: one group under local spray by Mckenzie method with lidocaine and the second group under local spray by Mckenzie method with normal saline , Demographic information (age and sex), weight, cause of bronchoscopy, blood pressure, heart rate, arterial oxygen saturation before and after induction, immediately after spraying and the first, second, third and fourth 15 minutes after Spray, rigid bronchoscopic indications, ease of bronchoscopy, frequency of straining and coughing during bronchoscopy and number and dose of intravenous propofol after induction of both groups in the operating room were recorded and compared.Results: In this double-blind clinical trial study, 32 children in the case group and 32 patients in the control group underwent rigid bronchoscopy. Between the two groups in terms of age (P value = 0.642), sex (P value = 0.656), weight (P value = 0.412), indication of bronchoscopy (P value = 1.000) There was no statistically significant difference, but in the ease of bronchoscopy (P value = 0.017), frequency of straing or cough (P value = 0.000), the need for additional dose of propofol during bronchoscopy (P value = 0.001), diastolic blood pressure 45 minutes after spray (P value = 0.019) Arterial oxygen saturation after induction (P value = 0.016) showed a statistically significant difference.There was no significant difference in comparison of changes in hemodynamic parameters including systolic blood pressure (P value: 0.486), diastolic blood pressure (P value: 0.631), heart rate (P value: 0.749) and arterial oxygen saturation (P value: 0.557) between two groups.