DIFFICULT MASK VENTILATION IN OBESE PATIENTS: ANALYSIS OF PREDICTIVE FACTOR

American Society of Anesthesiologists (ASA), DMV is defined as the clinical situation. developing when it not possible for the anesthesiologist to provide adequate ventilation because of one or more of the following problems: inadequate mask seal, excessive gas lead or excessive resistance to the ingress or egress of gas.

Materials and Methods:-This is a prospective randomised observational study in patients with morbid obesity (n = 90body mass index[BMI] >30 kg/m2. Patients were preoperatively assessed for age, height, weight, BMI,modified Mallampati test results,mouth opening [inter- incisor gap (cm)], thyromental distance (cm), sternomental distance (cm), mandibular protrusion,mandibular length (ML), neck circumference (NC) by anesthesiologist. Mask ventilation was graded according to four point Han scale.

Conclusion:In conclusion, male sex, snoring history, NC ≥43 cm, ML ≥9 cm and NC/TMD <5 cm were correlated with DMV in obese patients.According to the current investigation the three predictive factors are strongly associated.In the present study we demonstrated that (a)age >49 years, (B)Neck circumference >43cm,and (C) and short neck are strongly associated with DMV in obese patients.