Comparison of Intubation with Chula Formula Method and Manubrium Sternal Joint (MSJ) Formula against Oxygenation and Sore Throat in General Anaesthesia at Dr. Soetomo General Hospital

Abstract

Yoppie Prim Avidar, Hamzah1*, Christya Lorena G, Bambang Pujo Semedi, Ruth Theresia, Ruben Timothy Abednego, Akhyar Nur Uhud, Arinanda Lalilta Hayu

Intubation is a way to free the airway during general anesthesia procedures, but some severe complications can arise from this procedure, such as desaturation up to the cardiac arrest and brain damage. Another complication that can arise from ETT insertion is a sore throat. Optimal Endotracheal Tube (ETT) depth is a significant concern because of complications associated with ETT malposition. By using the right formula, the incidence of sore throat and desaturation can be minimized. This study compared the Chula formula's intubation method and the Manubrium sternal Joint (MSJ) formula against oxygenation and sore throat under general anesthesia. This research is a prospective comparative analytical study carried out on 50 people aged ≥ 18- ≤ 65 years, with the American Society of Anesthesiology (ASA) I-III, Malampari score I-II and conducted in Dr. Soetomo General Hospital Surabaya's surgical room from September-October 2020. Subjects were divided into two treatment groups: those with ETT depth measurements using the formula Chula and groups with Manubrium Sternal Joint (MSJ). Assessment of ETT tip distance to the carina using a Fiberoptic Laryngoscope (FOL), while oxygenation measured by pulse oxymetry and sore throat using a questionnaire. This study showed optimal oxygenation and minimal sore throat incidence in the Chula formula was better than the MSJ technique. Statistical analysis used the Kolmogorov-Smirnov test. The analysis results showed statistically significant differences (p<0.05). This research concludes that the use of the Chula formula results in optimal oxygenation and minimal sore throat.