The Effect of Endotracheal Tube Size on Post-Extubation Sore-Throat and Hoarseness in Patients Undergoing Laparoscopic Surgeries: A Randomized Clinical Trial

Background: An endotracheal tube (ETT) plays a critical role in maintaining a secure and open airway, ensuring proper ventilation and oxygenation throughout the surgical procedure. Aim: The present study was conducted with aim to evaluate the impact of endotracheal tube size on post-intubation sore throat and hoarseness in patients undergoing laparoscopic surgeries. Method: This randomized clinical trial was conducted at Ghaem and Imam Reza hospitals in Mashhad, Iran. Patients were randomly allocated into four groups using block randomization: two intervention groups (۶.۵ mm for males, ۶ mm for females) and two control groups (۷.۵ mm for males, ۷ mm for females). We monitored the incidence of sore throat and hoarseness at ۱-, ۶-, and ۲۴-hours post-surgery. Results: A total of ۱۶۰ patients (with mean age ۴۵.۰۱ ± ۱۰.۳۳ years) were evaluated. Gender distribution was similar between the two groups (۲۵.۶% in control and ۲۵% in intervention group were female). There were no significant differences between the two groups in terms of gender, age, BMI, underlying diseases, duration of surgery, duration of anesthesia, Malampathi score, Cormack-Lehane grade, the use of NG tubes and oral airways, indicating homogeneity. The incidence of hoarseness one hour after surgery was significantly lower in the intervention group (۷.۵%) compared to the control group (۲۰%) (p<۰.۰۵). Additionally, the sore throat at ۶ hours post-surgery was significantly lower in the intervention group than in the control group (p<۰.۰۵), but was not significant at ۱ and ۲۴-h post-surgery. Implications for Practice: Using a smaller tracheal tube size reduces the incidence of sore throat and hoarseness after laparoscopic surgery.

کلیدواژه ها:

Postoperative hoarseness ، Postoperative Sore Throat ، Tracheal intubation ، Tracheal tube size