Abstract:
BACKGROUND:We investigated the association between heart rate and its variability with the parameters that assess vascular, renal and cardiac target organ damage. METHODS:A cross-sectional study was performed including a consecutive sample of 360 hypertensive patients without heart rate lowering drugs (aged 56 ± 11 years, 64.2% male). Heart rate (HR) and its standard deviation (HRV) in clinical and 24-hour ambulatory monitoring were evaluated. Renal damage was assessed by glomerular filtration rate and albumin/creatinine ratio; vascular damage by carotid intima-media thickness and ankle/brachial index; and cardiac damage by the Cornell voltage-duration product and left ventricular mass index. RESULTS:There was a positive correlation between ambulatory, but not clinical, heart rate and its standard deviation with glomerular filtration rate, and a negative correlation with carotid intima-media thickness, and night/day ratio of systolic and diastolic blood pressure. There was no correlation with albumin/creatinine ratio, ankle/brachial index, Cornell voltage-duration product or left ventricular mass index. In the multiple linear regression analysis, after adjusting for age, the association of glomerular filtration rate and intima-media thickness with ambulatory heart rate and its standard deviation was lost. According to the logistic regression analysis, the predictors of any target organ damage were age (OR = 1.034 and 1.033) and night/day systolic blood pressure ratio (OR = 1.425 and 1.512). Neither 24 HR nor 24 HRV reached statistical significance. CONCLUSIONS:High ambulatory heart rate and its variability, but not clinical HR, are associated with decreased carotid intima-media thickness and a higher glomerular filtration rate, although this is lost after adjusting for age. TRIAL REGISTRATION:ClinicalTrials.gov: NCT01325064.
journal_name
BMC Cardiovasc Disordjournal_title
BMC cardiovascular disordersauthors
García-García A,Gómez-Marcos MA,Recio-Rodríguez JI,Patino-Alonso MC,Rodríguez-Sánchez E,Agudo-Conde C,García-Ortiz L,Vaso-risk group.doi
10.1186/1471-2261-12-19subject
Has Abstractpub_date
2012-03-22 00:00:00pages
19issn
1471-2261pii
1471-2261-12-19journal_volume
12pub_type
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