Stress response and antihypertensive treatment

Area of Science:

• Cardiovascular medicine
• Neuroscience
• Pharmacology

Background:

• The central nervous system influences sympathetic, metabolic, and hemodynamic effects in hypertension.
• Emotional and mental stress can trigger adrenergic responses in both normotensive and hypertensive individuals.
• Antihypertensive drugs have varied mechanisms and neurovegetative effects, necessitating differentiation in their impact on sympathetic activity.

Purpose of the Study:

• To evaluate the impact of stress on sympathetic reactivity using noninvasive psychophysiological methods.
• To identify individual cardioneurovegetative responses before and during antihypertensive treatment.
• To determine the differential effects of various antihypertensive treatments on cardioneurovegetative responses.

Main Methods:

• Utilized noninvasive psychophysiological techniques to assess extracardiovascular and hemodynamic responses to stressor agents.
• Standardized stress protocols to evaluate individual patient responses.
• Compared cardioneurovegetative responses before and during different antihypertensive therapies.

Main Results:

• Patients with a family history of hypertension and those who later developed hypertension showed impaired recovery after mental stress.
• Prolonged sympathetic activity post-mental stimulation may contribute to hypertension development.
• Nifedipine exacerbated sympathetic reactivity, whereas verapamil corrected abnormal neuroadrenergic responses. Verapamil combined with enalapril was effective for resistant hypertension.

Conclusions:

• Abnormal sympathetic reactivity to stimuli is significant in hypertensive patients.
• Mental stress-induced prolonged sympathetic activity may play a role in hypertension development.
• Pharmacological interventions differentially modulate sympathetic reactivity, with verapamil demonstrating a beneficial effect on neuroadrenergic responses.