Latar Belakang: Hipertensi merupakan salah satu masalah kesehatan yang dilaporkan terus menerus meningkat secara nasional. Self-care management hipertensi merupakan salah satu penatalaksanaan yang efektif untuk membantu penderita hipertensi mengelola tekanan darah. Pengetahuan memiliki peran penting dalam mengontrol tekanan darah pada lansia hipertensi dan mengelola self-care management. Tujuan: Untuk mengetahui hubungan pengetahuan dengan self-care management hipertensi pada lansia yang membutuhkan perawatan jangka panjang di wilayah kerja Puskesmas III Denpasar Selatan. Metode: Penelitian ini menggunakan desain analitik korelasi dangan pendekatan cross-sectional. Populasi dalam penelitian ini yaitu lansia menderita hipertensi yang ada di wilayah kerja Puskesmas III Denpasar Selatan dengan jumlah sampel sebanyak 120 responden dipilih menggunakan convenience sampling. Alat pengumpulan data berupa kuesioner baku pada pengetahuan dengan nilai cronbach alpha 0.938. Pada self-care management menggunakan kuesioner self-care management hipertensi dengan nilai cronbach alpha berkisar 0,67 dan 0,82. Data dianalisis menggunakan univariat dan bivariat. Hasil: Hasil penelitian menunjukkan bahwa 70 responden (58.3%) memiliki pengetahuan yang baik sebanyak 116 reponden (96,7%) memiliki self-care management yang baik, (p-value (0.001)

Background: Hypertension is one of the health problems that is reportedly increasing nationally. Self-care is one of the most powerful ways of helping people with hypertension control their blood pressure. Knowledge is essential when it comes to control blood pressure and self-care in elderly with hypertension. Purpose: To determine the correlation between knowledge and self-care management in elderly with hypertension requiring long-term care in the working area of Public Health Center III South Denpasar. Method: This study employed correlative analytics design with cross-sectional approach. The population of this study were elderly with hypertension in the working area of Public health center III South Denpasar. There were 120 respondents recruited as sample of the study which were selected by using convenience sampling technique. The data were collected by using questionnaire of knowledge with a Cronbach alpha value of 0.938 and hypertension self-care management questionnaire with Cronbach alpha values ranging from 0.67 and 0.82 The data were analyzed by using univariate and bivariate analysis. Result: The finding showed that there were 70 respondents (58.3%) had good knowledge, there were 116 respondents (96.7%) had good self-care management with (p-value (0.001)