Latar Belakang: Obesitas dapat meningkatkan risiko komplikasi selama dan sesudah anestesi. Sehingga terciptalah suatu skor untuk memprediksi risiko komplikasi yaitu skor Obesity Surgery Mortality Risk Score (OS-MRS), yang dikembangkan untuk operasi bariatrik dan berpotensi diterapkan pada operasi non bariatrik. Tujuan: Menilai risiko komplikasi pasca anestesi pada pasien obesitas yang menjalani operasi non bariatrik menggunakan skor OS-MRS. Metode: Penelitian ini menggunakan metode deskriptif kualitatif dengan pendekatan multiple case study. Data dikumpulkan melalui observasi dan dokumentasi medis di RSUD Wangaya Denpasar pada April-Mei 2025. Lima partisipan dipilih melalui teknik purposive sampling berdasarkan kriteria inklusi yang telah ditetapkan, yaitu pasien obesitas (IMT ≥ 27), usia 19–59 tahun, dan menjalani operasi non bariatrik dengan general anestesi. Hasil: Dua partisipan diklasifikasikan dalam risiko rendah (skor 0–1), dua dalam risiko sedang (skor 2–3), dan satu dalam risiko tinggi (skor 4–5). Komplikasi yang muncul meliputi keterlambatan pulih sadar, gangguan respirasi, serta mual dan muntah pasca operasi (postoperative nausea and vomiting). Pasien dengan skor OS-MRS lebih tinggi menunjukkan komplikasi pasca anestesi yang lebih signifikan dibandingkan pasien dengan skor rendah.. Kesimpulan: OS-MRS dapat digunakan sebagai alat bantu dalam menilai risiko komplikasi pasca anestesi dan membantu penata anestesi dalam merencanakan perawatan yang lebih aman dan efektif. Kata Kunci : Anestesi Umum, Obesitas, Operasi Non Bariatrik, OS-MRS, Pasca Anestesi, Risiko Komplikasi

Background: Obesity can increase the risk of complications intra and post anesthesia. Therefore, a scoring system was developed to predict the risk of complications such as Obesity Surgery Mortality Risk Score (OS-MRS), which was originally designed for bariatric surgery and has the potential to be applied to non-bariatric surgery as well. Purpose: To assess the risk of complication post anesthesia on obese patients who underwent non-bariatric surgery with OS-MRS Method: This study employed descriptive qualitative method with multiple case study. The data were collected by using observation and medical documentation in Wangaya Hospital in April-May 2025. Five participants were recruited by using purposive sampling technique based on inclusive criteria such as obese patients, aged 19-59 years old, and performing non-bariatric surgery with general anesthesia. Findings: The result showed that two participants were classified as low risk (score 0–1), two participants had moderate risk (score 2–3), and one participant had high risk (score 4–5). The complications were included delayed recovery of consciousness, respiratory disturbances, and postoperative nausea and vomiting (PONV). The patients with higher OS-MRS scores had more significant post operative complications compared to the patients with lower score. Conclusion: The OS-MRS can be used as a tool to assess the risk of post-anesthesia complications and to help the nurse anesthetist in planning safer and more effective care. Keywords : General Anesthesia, Obesity, Non-Bariatric Surgery, OS-MRS, Post Anesthesia, Risk of Complications