Peripheral Vasoconstriction During Mental Stress and Adverse Cardiovascular Outcomes in Patients With Coronary Artery Disease

Author:

Kim Jeong Hwan1,Almuwaqqat Zakaria1,Hammadah Muhammad1,Liu Chang12,Ko Yi-An2,Lima Bruno1,Sullivan Samaah3,Alkhoder Ayman1,Abdulbaki Rami1,Ward Laura23,Bremner J. Douglas45,Sheps David S.6,Raggi Paolo7,Sun Yan V.3,Shah Amit J.135,Vaccarino Viola13,Quyyumi Arshed A.1

Affiliation:

1. From the Division of Cardiology, Department of Medicine (J.H.K., Z.A., M.H., C.L., B.L., A.A., R.A., A.J.S., V.V., A.A.Q.), Emory University School of Medicine, Atlanta, GA

2. Department of Biostatistics and Bioinformatics (C.L., Y.-A.K., L.W.), Rollins School of Public Health, Emory University, Atlanta, GA

3. Department of Epidemiology (S.S., L.W., Y.V.S., A.J.S., V.V.), Rollins School of Public Health, Emory University, Atlanta, GA

4. Department of Psychiatry and Behavioral Sciences (J.D.B.), Emory University School of Medicine, Atlanta, GA

5. Atlanta VA Medical Center, Decatur, Georgia (J.D.B., A.J.S.)

6. Department of Epidemiology, University of Florida College of Medicine, Gainesville (D.S.S.)

7. Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Canada (P.R.).

Abstract

Rationale: Excessive vasoconstriction in response to mental stress may be a potential mechanism by which acute psychological stress leads to adverse cardiac events. Objectives: We investigated whether excessive digital vasoconstriction during acute mental stress predicts adverse cardiovascular outcomes among patients with coronary artery disease. Methods and Results: Five hundred forty-nine patients with stable coronary artery disease (age 63±9, 76% male, 29% black) underwent mental stress testing with a standardized public speaking stressor and followed prospectively for cardiovascular end points. Digital pulse wave amplitude was continuously measured using peripheral artery tonometry (PAT, Itamar Inc). Stress/rest PAT ratio (sPAT) of pulse wave amplitude during mental stress/baseline was calculated and dichotomized by the median value into low and high sPAT ratio groups. Upon 3-year follow-up, Fine and Gray’s subdistribution hazard ratios were used to examine the association between sPAT ratio and the composite end point of cardiovascular death, myocardial infarction, revascularization, and hospitalization for heart failure. The median sPAT ratio was 0.68 (interquartile range, 0.48–0.88), indicating 32% vasoconstriction with mental stress. Men were more likely to have low sPAT ratio than women (odds ratio, 1.79; P =0.007) while those on β-blockers were less likely to have low sPAT ratio (odds ratio, 0.52; P =0.003). After adjusting for demographic and cardiovascular risk factors, medications, and rate-pressure product change during mental stress, those with low sPAT ratio were at significantly higher risk of adverse outcomes (subdistribution hazard ratio, 1.77 [95% CI, 1.12–2.80]). Conclusions: Greater peripheral vasoconstriction with mental stress, denoted by a low sPAT ratio, is associated with a higher risk of adverse cardiovascular outcomes in patients with coronary artery disease.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Cardiology and Cardiovascular Medicine,Physiology

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