Latar Belakang : Diabetes melitus merupakan penyakit kronis yang memerlukan perawatan jangka panjang (PJP). Berbagai komplikasi dapat terjadi, salah satunya hipoglikemia. Hipoglikemia menyebabkan terjadinya dehidrasi, koma, sesak napas, bahkan kematian. Oleh karena itu penderita DM harus memiliki pemahaman yang tepat untuk mencegah terjadinya komplikasi hipoglikemia. Tujuan : Penelitian ini bertujuan untuk mengetahui pengaruh pendidikan kesehatan terhadap pengetahuan penderita diabetes melitus tipe 2 tentang pencegahan kegawatdaruratan hipoglikemia di Puskesmas I Denpasar Selatan. Metode : Penelitian ini menggunakan desain pra eksperimental dengan rancangan one group pretest-posttest design. Teknik sampling menggunakan purposive sampling. Jumlah sampel sebanyak 22 responden. Data dikumpulkan menggunakan instrumen kuesioner pengetahuan, sebelum dan sesudah diberikan pendidikan kesehatan. Selanjutnya data dianalisa menggunakan uji nonparametrik Dependent-T Test. Hasil : Hasil penelitian menunjukkan sebelum diberikan pendidikan kesehatan (pre test) pengetahuan kurang sebanyak 59,1%, cukup 31,8%, dan baik sebanyak 9,1%. Setelah diberikan pendidikan kesehatan (post test) pengetahuan baik sebanyak 63,6%, cukup 36,4%, dan kurang 0%. Terdapat pengaruh yang signifikan antara pendidikan kesehatan terhadap pengetahuan penderita diabetes melitus tipe 2 tentang pencegahan kegawatdaruratan hipoglikemia dengan PJP di Puskesmas I Denpasar Selatan (p

Background. Diabetes mellitus (DM) is a chronic disease that requires long-term care (LTC). Various complications can occur, one of which is hypoglycemia. Hypoglycemia causes dehydration, coma, shortness of breath, and even death. Therefore, patients with DM must have a good understanding to prevent complications of hypoglycemia. The purpose of this study was to determine the effect of health education on the knowledge of patients with type 2 diabetes mellitus about preventing hypoglycemia emergencies at Public Health Centre I South Denpasar. Method. This study employed a pre-experimental design with a one-group pretest-posttest design. In this study, 22 respondents were recruited as a sample through the purposive sampling technique. Data were collected using a knowledge questionnaire instrument, before and after being given health education. Furthermore, data were analyzed using the nonparametric Dependent-T Test. Results. Findings indicated that before being given health education (pre-test), the majority of respondents had poor knowledge (59.1%), 31.8% of respondents had a moderate knowledge level, and 9.1% had a good knowledge level. After being given health education (post-test), the majority of respondents had good knowledge (63.6%), 36.4% had a moderate knowledge level, and none had poor knowledge. There was a significant effect between health education on the knowledge of type 2 diabetes mellitus sufferers about preventing hypoglycemia emergencies with LTC at Public Health Center I South Denpasar (p