OBJECTIVE: To test the hypothesis of a significant association between resting heart rate (RHR) and coronary artery calcium (CAC). METHODS: This is a cross-sectional study of a subset of women enrolled in the estrogen-alone clinical trial of the Women's Health Initiative (WHI). We used a longitudinal study that enrolled 998 postmenopausal women with a history of hysterectomy between the ages of 50 and 59 at enrollment at 40 different clinical centers. RHR was measured at enrollment and throughout the study, and CAC was determined approximately 7 years after the baseline clinic visit. RESULTS: The mean (standard deviation [SD]) age was 55 (2.8) years. With adjustment for age and ethnicity, a 10-unit increment in RHR was significantly associated with CAC (SD 1.18, 95% confidence interval [CI] 1.01-1.38), but this was no longer significant after adjustment for body mass index (BMI), income, education, dyslipidemia, diabetes, smoking, and hypertension (SD 1.06, 95% CI 0.90-1.25). In a fully adjusted multivariable model, however, there was a significant interaction (p=0.03) between baseline RHR and systolic blood pressure (SBP) for the presence of any CAC. Compared to women with an RHR < 80 beats per minute (BPM) and an SBP < 140 mm Hg, those who had an RHR ≥ 80 BPM and an SBP ≥ 140 mm Hg had 2.66-fold higher odds (1.08-6.57) for the presence of any CAC. CONCLUSIONS: Compared to those with normal BP and RHR, postmenopausal, hysterectomized women with an elevated SBP and RHR have a significantly higher odds for the presence of calcified coronary artery disease.
OBJECTIVE: To test the hypothesis of a significant association between resting heart rate (RHR) and coronary artery calcium (CAC). METHODS: This is a cross-sectional study of a subset of women enrolled in the estrogen-alone clinical trial of the Women's Health Initiative (WHI). We used a longitudinal study that enrolled 998 postmenopausal women with a history of hysterectomy between the ages of 50 and 59 at enrollment at 40 different clinical centers. RHR was measured at enrollment and throughout the study, and CAC was determined approximately 7 years after the baseline clinic visit. RESULTS: The mean (standard deviation [SD]) age was 55 (2.8) years. With adjustment for age and ethnicity, a 10-unit increment in RHR was significantly associated with CAC (SD 1.18, 95% confidence interval [CI] 1.01-1.38), but this was no longer significant after adjustment for body mass index (BMI), income, education, dyslipidemia, diabetes, smoking, and hypertension (SD 1.06, 95% CI 0.90-1.25). In a fully adjusted multivariable model, however, there was a significant interaction (p=0.03) between baseline RHR and systolic blood pressure (SBP) for the presence of any CAC. Compared to women with an RHR < 80 beats per minute (BPM) and an SBP < 140 mm Hg, those who had an RHR ≥ 80 BPM and an SBP ≥ 140 mm Hg had 2.66-fold higher odds (1.08-6.57) for the presence of any CAC. CONCLUSIONS: Compared to those with normal BP and RHR, postmenopausal, hysterectomized women with an elevated SBP and RHR have a significantly higher odds for the presence of calcified coronary artery disease.
Authors: J David Curb; Anne McTiernan; Susan R Heckbert; Charles Kooperberg; Janet Stanford; Michael Nevitt; Karen C Johnson; Lori Proulx-Burns; Lisa Pastore; Michael Criqui; Sandra Daugherty Journal: Ann Epidemiol Date: 2003-10 Impact factor: 3.797
Authors: Marie Therese Cooney; Erkki Vartiainen; Tiina Laatikainen; Anne Joulevi; Alexandra Dudina; Ian Graham Journal: Eur Heart J Date: 2010-07-23 Impact factor: 29.983
Authors: R Haberl; A Becker; A Leber; A Knez; C Becker; C Lang; R Brüning; M Reiser; G Steinbeck Journal: J Am Coll Cardiol Date: 2001-02 Impact factor: 24.094
Authors: Raimund Erbel; Stefan Möhlenkamp; Susanne Moebus; Axel Schmermund; Nils Lehmann; Andreas Stang; Nico Dragano; Dietrich Grönemeyer; Rainer Seibel; Hagen Kälsch; Martina Bröcker-Preuss; Klaus Mann; Johannes Siegrist; Karl-Heinz Jöckel Journal: J Am Coll Cardiol Date: 2010-10-19 Impact factor: 24.094
Authors: George T Kondos; Julie Anne Hoff; Alexander Sevrukov; Martha L Daviglus; Daniel B Garside; Stephen S Devries; Eva V Chomka; Kiang Liu Journal: Circulation Date: 2003-05-12 Impact factor: 29.690