Accuracy of Sternomental Distance for Screening Difficult Tracheal Intubation among Patients Under General Anesthesia: A Systematic Review
Keywords:
Sternomental distance, General Anesthesia, Systematic reviewAbstract
A systematic review aimed to consider accuracy of SMD for screening difficult tracheal intubation. The published research articles were searched from databases including Cochrane library, PubMed, Scopus, CINHAL, DARE, TCI, and other sources such as Google scholar and BJA. All articles that were retrieved from searching were screened based on eligibility criteria, extracted data, assessed risk of bias using QUADAS-2, and conducted Meta-analysis using HSROC model. Our results found that 35 included studies (14,417 participants) indicated that sensitivity and specificity of SMD were 34% (95% CI, 22 to 48) and 91% (95% CI, 85 to 95) and area under curve of SROC was 76% (95% CI, 72 to 80). When cut-of-point of SMD was between 13 to 13.5 centimeters, its’ sensitivity and specificity were 13% (95% CI, 4 to 36) and 96% (95% CI, 85 to 99), and area under curve of SROC was 63 (95% CI 59 to 67).
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