Journal
JOURNAL OF TRAUMATIC STRESS
Volume 34, Issue 2, Pages 384-393Publisher
WILEY
DOI: 10.1002/jts.22637
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Funding
- National Institute on Aging (NIA) Training Grant [T32-AG000029]
- Department of Veterans Affairs (VA) Northwest Network MIRECC
- U.S. Department of Veterans Affairs, Clinical Science Research and Development Service [IK2CX001774]
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Research suggests that interventions for posttraumatic stress disorder (PTSD) may improve cardiovascular physiological outcomes, particularly cardiovascular reactions to trauma cues. However, current studies have limitations in terms of heterogeneity, small sample sizes, and lack of control conditions, highlighting the need for additional methodologically rigorous research.
Posttraumatic stress disorder (PTSD) is linked to both altered physiological functioning and poorer cardiovascular health outcomes, including an increased risk for cardiovascular disease and cardiovascular-related mortality. An important question is whether interventions for PTSD might ameliorate the risk for poorer health by improving cardiovascular physiological intermediaries. To begin to characterize the literature addressing this question, we conducted a systematic review of empirical studies examining the impact of PTSD interventions on cardiovascular physiological intermediaries, including blood pressure (BP), heart rate (HR), cardiac impedance, and subclinical atherosclerosis. Outcomes included both tonic (i.e., resting) cardiovascular functioning and cardiovascular reactivity (CVR). A total of 44 studies met the inclusion criteria. There was mixed evidence regarding whether PTSD treatment improved tonic cardiovascular functioning. There was stronger evidence that PTSD treatments reduced CVR to trauma-related stressors, particularly for higher-quality studies of cognitive behavioral interventions. No studies examined cardiac impedance or subclinical atherosclerosis. The studies had a high degree of heterogeneity in the populations sampled and interventions tested. Moreover, they generally included small sample sizes and lacked control conditions. Interventions for PTSD may improve cardiovascular physiological outcomes, particularly CVR to trauma cues, although additional methodologically rigorous studies are needed. We outline changes to future research that would improve the literature regarding this important question, including the more frequent use of control groups and larger sample sizes.
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