<![CDATA[Chronic obstructive pulmonary disease (COPD) is a progressive respiratory disorder frequently accompanied by systemic complications, including sarcopenia, which may reduce physical capacity and worsen clinical outcomes. This study aimed to determine the prevalence of sarcopenia and identify its associated predictors among patients with stable COPD. A cross-sectional study was conducted among 67 patients with stable COPD who attended the Pulmonology Outpatient Clinic at Universitas Sumatera Utara Hospital. Muscle mass was assessed using bioelectrical impedance analysis and expressed as the skeletal muscle index, while muscle strength was measured using a handgrip strength test. Descriptive, bivariate, and receiver operating characteristic (ROC) analyses were performed. The results showed that 55.2% of participants had reduced muscle strength, 38.8% had low muscle mass, and 29.9% met the diagnostic criteria for sarcopenia. Older age and lower body mass index (BMI) were significantly associated with sarcopenia. An age threshold of >66 years predicted sarcopenia with 75.0% sensitivity and 66.0% specificity, whereas a BMI threshold of <23 kg/m² demonstrated 76.6% sensitivity and 85.0% specificity. In conclusion, sarcopenia was prevalent even among clinically stable COPD patients. Routine assessment of age, BMI, muscle mass, and handgrip strength may support early detection and facilitate timely nutritional and rehabilitative interventions to prevent functional decline and improve patient outcomes.]]>
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