كافي است ؟ مطالعه قند و ليپيد تهران JNC-VI آيا فشارخون سيستولي براي طبقه بندي پرفشاري خون براساس معيارهاي

Is systolic blood pressure sufficient for classification of blood pressure and determination of hypertension based on JNC-VI in Iranian adult population? Tehran Lipid and Glucose Study

Introduction: The purpose of this study was to determine if systolic blood pressure (SBP) value by itself is sufficient for the classification of blood pressure of Tehran adult population based on JNC-Vl (Sixth Report of The Joint National Committee on Detection, Evaluation, and Treatment of High Blood Pressure). Materials and Methods: Clinically, SBP and DBP are sometimes in different stages in the same individual and the higher stage is considered to classify blood pressure level. The prevalence of disparate levels of SBP and DBP has come to attention only recently. Some researchers have reported the importance of SBP, and not DBP, in determining the appropriate classification of hypertension even in those undergoing treatment. Data were collected for 3823 men and 5159 women aged 20-69 years who were not using antihypertensive medication in Tehran Lipid and Glucose Study (TLGS), cross-sectional phase of a large epidemiological study first established in 1999. The study used mean of two separate blood pressure measurements in each individual. High blood pressure was defined according to the highest level of systolic or diastolic blood pressure. Results: In 86.3% of subjects blood pressure stage was determined according to SBP and in 90.0% of them according to DBP. In 77.4% of subjects (75.7% of men and 78.7% of women), SBP determined BP in the same stage as DBP did. The role of SBP was most prominent in age groups 20-29 years and 60-69 years (91.4% and 90.8%, respectively) and the least in age group 40-49 years (80.4% of subjects). DBP had a more prominent role in younger ages and the least significance in older ages. Conclusions: SBP has a more prominent role than DBP in determining blood pressure stage according to JNC-Vl only in 60-69 year-old people and the role of DBP is more prominent in other age groups.