Double Product and Obesity in Batam: A Descriptive Study

Author : A.M. Zahidin, A. Sutheno
Upload Date : 19-04-2018

Introduction: The double product (DP), the product of systolic blood pressure (SBP) and heart rate (HR), is an index of myocardial oxygen consumption. The DP was previously used during exercise testing in patients with coronary heart disease. Obesity is a risk factor for various subtypes of cardiovascular disease (CVD). Our aim is to find association between BMI and DP as predictor of morbidity of CVD.

Method: This descriptive study was conducted using questionnaire at Puskesmas Kabil Batam from April to June 2017. The inclusion criteria was a woman gender, and above 18 years old. The exclusion criteria were respondent who were pregnant, breastfeeding, and or had cardiovascular, renal, and lung disease. Average resting heart rate were measured using ambulatory blood pressure monitoring (ABPM) 5 days continuously in the morning. Statistical analysis was done using SPSS 25.0. The Data was analyzed for normal distribution, and the comparison of parameters were done by using one-way ANOVA and post-hoc by LSD.

Result: 98 subjects were included in this study, with mean age of 38.16±0.88 years old, mean BMI 25.31± 0.49, and mean DP  9265.61±202.54. Obesity was found to be the increasing factor of the double product value (p<0.05). There was statistically significant difference between obesity and normal weight women (p<0.05, MD 1376.97±499.23), and overweight women (p<0.05, MD 1375.966±659.2).

Conclusion: This study proved that there is a difference in DP between obesity, overweight, and normal weight women. Obesity women have higher prevalence of increased double product, which is the useful predictor for early identification of the risk of myocardial ischaemia. Further study is required to confirm the usefulness of the DP in risk stratification.

KEYWORDS : Cardiovascular Disease, Double Product, Heart Rate, Obesity, Women

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