Objective: With the rate of obesity increasing worldwide, patients with lymphoedema with and without a concomitant diagnosis of severe obesity (SO) were compared in regard to their baseline demographics, health related characteristics, treatment plans, and patient outcomes.
Methods: This was a retrospective observational cohort study. The IBM MarketScan database was examined (2013 - 2019) for patients with a new diagnosis of lymphoedema. Of 60 284 patients with lymphoedema identified, 6 588 had SO defined by a body mass index > 40 kg/m. The demographics and other characteristics of SO were compared with patients with lymphoedema without SO.
Results: SO and lymphoedema diagnosis increased two fold from 2013 to 2019. The lymphoedema SO+ group was younger (57.8 vs. 60.8 years, p < .001) and with a higher proportion of men (37.7% vs. 24.9%, p < .001) than the lymphoedema SO- group. More comorbidities were observed in the lymphoedema SO+ group than the lymphoedema SO- group: diabetes 46.0% vs. 24.9 % (p < .001), heart failure 18.3% vs. 7.4% (p < .001), hypertension 75.0% vs. 47.6% (p < .001), and renal disease 24.8% vs. 11.9% (p < .001). Use of diuretics in the lymphoedema SO+ group was greater: 57.6% vs. 38.0% (p < .001). Patients with lymphoedema SO+ had higher risk of cellulitis: 34.5% vs. 13.5% (p < .001). Specific lymphoedema treatment was given more often to lymphoedema SO-: 66.3% vs. 64.3% (p = .003). This was significant for manual lymphatic drainage (46.6% vs. 40.0%; p < .001) and physical therapy (55.4% vs. 51.6%; p<.001), but not for compression garments (18.2% vs. 17.7%; p = .38). However, more patients with lymphoedema SO+ received pneumatic compression device treatment: 20.9% vs. 13.7% (p < .001).
Conclusion: There was an increase in SO associated lymphoedema. Patients with lymphoedema SO+ have over a two and half fold increase in cellulitis incidence, with a significant increase in medical resource use and cost. Despite this, patients with lymphoedema and SO receive less specific therapy such as compression, which has proven to reduce cellulitis incidence.
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