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Exploring the blood volume amplitude and pulse transit time during anger recall in patients with coronary artery
I-Mei Lin1, Sheng-Yu Fan2, Ye-Hsu Lu3
1Department of Psychology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
Insights
Patients with coronary artery disease (CAD) show heightened blood volume amplitude (BVA) reactivity and impaired recovery during anger recall, suggesting a link between anger, autonomic imbalance, and CAD.
Area of Science:
- Cardiology
- Psychophysiology
- Autonomic Nervous System Research
Background:
- Cardiac autonomic imbalance is a proposed mechanism linking anger to coronary artery disease (CAD).
- Blood volume amplitude (BVA) and pulse transit time (PTT) serve as indirect markers of autonomic activation, reflecting peripheral arterial elasticity and cardiac conduction.
- Understanding these markers' reactivity during emotional stress is crucial for CAD psychopathology research.
Purpose of the Study:
- To investigate the relationship between BVA and PTT in CAD patients.
- To examine the reactivity and recovery of BVA and PTT during an anger recall task in CAD patients compared to healthy controls.
Main Methods:
- 112 patients with CAD and 93 healthy controls participated.
- BVA and PTT measurements were taken at baseline, during neutral and anger recall episodes, and post-episode recovery.
- Statistical analyses compared reactivity and recovery patterns between groups.
Main Results:
- Significant positive correlations between BVA and PTT were observed across all participants.
- CAD patients exhibited greater BVA reactivity during anger recall and lower BVA recovery compared to controls.
- While controls showed full PTT recovery, CAD patients did not recover PTT to baseline levels after neutral or anger episodes.
Conclusions:
- BVA and PTT dynamics during anger recall are linked to cardiac autonomic regulation.
- Peripheral vasoconstriction and altered pulse transit times during anger, coupled with impaired recovery, may underlie the psychopathological mechanisms of CAD.
- These findings highlight the physiological impact of anger on cardiovascular function in CAD patients.
Background And Purpose:
One psychopathological mechanism that links anger to coronary artery disease (CAD) is cardiac autonomic imbalance. Blood volume amplitude (BVA) and pulse transit time (PTT) are related to peripheral arterial elasticity and cardiac conduction, which are used as indirect markers for autonomic activation. The purposes of this study were to examine the relationships between BVA and PTT, and the reactivity of BVA and PTT during the anger recall task in patients with CAD.
Methods And Subjects:
A total of 112 patients with CAD and 93 healthy controls were recruited; BVA and PTT were collected during baseline, the neutral episode, the anger episode, and after recovery.
Results:
There were significant positive correlations between BVA and PTT in all participants. BVA reactivity during the anger episode was greater in patients with CAD than in healthy controls, and there were also lower BVA recovery values after the neutral and anger episodes. However, there was no significant difference in BVA reactivity between the two groups in the neutral episode. PTT recovered to baseline levels after the neutral and anger episodes in healthy controls, but not in the patients with CAD.
Conclusion:
BVA and PTT were associated with peripheral vascular elasticity and cardiac conduction that were regulated by the cardiac autonomic system. Peripheral vasoconstriction and changes in travel time between left ventricular and peripheral vasculature during the anger episode, and impaired recovery to baseline levels may relate to the psychopathological mechanisms of CAD.