Latar Belakang: Hipertensi merupakan salah satu penyebab utama kematian di seluruh dunia. Salah satu faktor yang mempengaruhi peningkatan tekanan darah adalah status IMT abnormal. IMT berlebih atau obesitas memiliki risiko yang lebih tinggi menderita hipertensi. Tujuan: Penelitian ini bertujuan untuk mengetahui rata-rata tekanan darah dan perbedaan kejadian hipertensi berdasarkan IMT di Wilayah Kerja Puskesmas II Denpasar Barat. Metode: Penelitian ini menggunakan pendekatan cross-sectional study komparatif. Populasi dalam penelitian ini adalah masyarakat yang berusia 19-59 tahun di Desa Pemecutan Kelod pada tanggal 6-27 September 2024 dengan jumlah sampel 385 responden yang diperoleh dengan teknik probability sampling tipe cluster random sampling. Instrumen pada penelitian ini yaitu lembar data demografi responden, timbangan badan, stature meter, dan sphygmomanometer. Data yang diperoleh dianalisis menggunakan analisa univariat dan uji chi-square. Hasil: Total 385 responden yang mayoritas perempuan 199 (51,7%) responden. Rata-rata tekanan darah yaitu 138/87 mmHg. Mayoritas responden dengan tekanan darah normal/pre-hipertensi sebanyak 232 (60,3%) responden dan sebagian besar mengalami kegemukan/obesitas sebanyak 223 (57,9%) responden. Hasil uji chisquare menemukan bahwa terdapat perbedaan kejadian hipertensi berdasarkan IMT di Wilayah Kerja Puskesmas II Denpasar Barat (p-value 0,001) Kesimpulan: IMT abnormal mempengaruhi peningkatan tekanan darah. Oleh karena itu, menerapkan perilaku hidup sehat seperti menjaga asupan makanan dan melakukan aktifitas fisik secara teratur sebagai upaya pencegahan kenaikan IMT dan tekanan darah. Kata Kunci: Rata-Rata Tekanan Darah, Kejadian Hipertensi, Indeks Massa Tubuh (IMT)

Background. Hypertension is one of the leading causes of death worldwide. One of the factors that affect the increase in blood pressure is abnormal Body Mass Index (BMI) status. Excess BMI or obesity has higher risk of suffering from hypertension. Aim. To determine the average of blood pressure and the difference in the incidence of hypertension based on BMI in the Working Area of Public Health Center II West Denpasar. Method. This study employed comparative cross-sectional approach. The population in this study was people aged 19-59 years in Pemecutan Kelod Village and conducted in September 6th-27th, 2024 with number of sample 385 respondents obtained by cluster random sampling technique. The data were collected using sheets of respondent’s demographic data, body scales, stature meters, and sphygmomanometers. The data were analysed using univariate analysis and Chi- Square test. Finding. The findings showed that the majority of respondents were female 199 respondents (51.7%). The average of blood pressure was 138/87 mmHg. The majority of respondents with normal blood pressure/pre-hypertension were 232 respondents (60.3%) and most of them were overweight/obese 223 respondents (57.9%). Furthermore, the results of the Chi-Square test indicated that there was difference in the incidence of hypertension based on BMI in the Working Area of Public Health Center II West Denpasar (p-value 0.001). Conclusion: Abnormal BMI affects the increase in blood pressure. Therefore, implementing healthy lifestyle such as maintaining food intake and doing regular physical activity is an effort to prevent an increase in BMI and blood pressure. Keywords: Average Blood Pressure, Hypertension Incidence, Body Mass Index (BMI)