Prevalence and risk factors for obstructive sleep apnea in a multiethnic population of patients presenting for bariatric surgery in Singapore

Assessment of Obstructive Sleep Apnea in Adults Undergoing Bariatric Surgery in the Longitudinal Assessment of Bariatric Surgery-2 (LABS-2) Study

“…Thus, it is diffi cult to conclude whether actual prevalence of OSA in the LABS-2 cohort is closer to 53%, as determined in the entire cohort from a combination of assessment methods, or 81%, as determined in the subsample who had past-year AHI available. It is interesting to note that this prevalence of OSA in the subsample with past-year AHI is consistent with several small single-center studies that determined OSA status via PSG (prevalence range: 72-98%), [3][4][5][6][7][8] while the prevalence in the group without a known past-year AHI is in line with a large cohort study in which OSA prevalence (41%) was determined with a set of screening questions. 9 Self-reported PAP compliance (i.e., use among those with OSA), which was similar between participants with and without past-year AHI (83.0% and 81.2%, respectively), was higher than objectively determined compliance reported in the general population, which is between 40% and 60% one year after starting PAP.…”

“…1 Although the reported prevalence of obstructive sleep apnea (OSA) in bariatric surgery patients has been highly variable (ranging from 41% to 98%), [2][3][4][5][6][7][8][9] it is clearly substantially higher than the 2% to 4% prevalence in the general adult population. 10,11 There is evidence to suggest that OSA is independently associated with increased risk of perioperative and postoperative complications, 12,13 including following bariatric surgery.…”

Evaluation of obstructive sleep apnea in obese patients scheduled for bariactric surgery

“…Our data were similar to the study of Lettieri et al 14 who evaluated the polysomnographic results of 24 obese individuals before and one year after the bariatric surgery, finding OSA diagnosis for all and severe OSA for 71%. Other studies also showed high prevalence of OSA in pre-operative bariatric surgery, varying from 58.3% to 100%, but only 15% to 19% were diagnosed previously 15,16,18,[20][21][22]24 .…”

“…The bariatric surgery was recommended for obesity treatment and its comorbidities in this population and the risks of OSA have been studied by several authors 14,15,[18][19][20][21][22][23][24] . OSA increases the morbidity as well as perioperative and post-operative mortality rate during the bariatric surgery 15,25,26 .…”

Influence of Neck Circumference on Respiratory Endurance and Muscle Strength in the Morbidly Obese

“…The classification was as follows: the group of obese with higher fat content-waist-hip ratio greater or equal to 0.95 (WHR≥ 0.95) and those with lower fat content-waist-hip ratio less than 0.95 (WHR<0.95) [11]. They, according with previous studies [14,15] and after had been evaluated an appropriated cutoff on receiver operating characteristics (ROC) curve, were also classified according to neck circumference: greater than or equal to 43 cm (NC≥43) and less than 43 cm (NC< 43). This value shows on predictive cutoff a sensitivity of 50% and specificity of 76%.…”