Disease-Based Criteria vs BMI Level for Prioritization of Metabolic Surgery
摘要
BMI is widely used as a primary criterion for prioritizing candidates for metabolic surgery. However, it may not fully capture disease severity or mortality risks associated with comorbidities such as type 2 diabetes (T2D) and cardiovascular disease (CVD). This study aimed to assess whether BMI accurately reflects disease burden and risk in patients undergoing metabolic surgery.
MethodsA retrospective audit included 723 adult candidates for primary metabolic surgery at a tertiary care center between January 2014 and December 2022. Patients undergoing revisional surgeries were excluded. Clinical data, including demographics, comorbidities, and disease severity indicators (e.g., ASA score, Charlson Comorbidity Index [CCI], medication usage, and estimated 10-year survival), were analyzed. Patients were grouped by BMI (< or ≥ 50 kg/m2), T2D, and CVD status for comparison.
ResultsPrevalence rates for T2D, BMI ≥ 50 kg/m2, and CVD were 41.6%, 37.3%, and 16.2%, respectively. Patients with BMI ≥ 50 kg/m2 were generally younger, had fewer comorbidities, lower CVD prevalence, and better estimated 10-year survival than those with BMI < 50 kg/m2. In contrast, patients with T2D and CVD had significantly higher ASA and CCI scores, greater medication usage, and reduced 10-year survival (p < 0.001 for T2D; p < 0.01 for CVD).
ConclusionHigher BMI levels do not reflect greater disease burden and mortality risk among candidates for bariatric/metabolic surgery. These findings do not support the use of high BMI-based thresholds (e.g., ≥ 50 kg/m2) as criteria for expedited access. Clinically relevant measures of baseline disease burden should be used to determine the urgency of access to surgical treatment of obesity and T2D.