Related Experiment Videos
The effects of antihypertensive therapy on carotid vascular structure in man
J Mayet1, A V Stanton, A M Sinclair
1Peart-Rose Clinic, St. Mary's Hospital Medical School, Imperial College of Science, Technology and Medicine, London, UK.
Insights
Antihypertensive therapy significantly reduced carotid intima-media thickness (IMT) in hypertensive patients. This regression, likely due to blood pressure reduction, suggests potential benefits for cardiovascular health.
Area of Science:
- Cardiology
- Vascular Biology
- Hypertension Research
Background:
- Increased carotid intima-media thickness (IMT) is linked to cardiovascular risk factors like hypertension.
- Hypertension is a major contributor to cardiovascular disease, necessitating effective treatment strategies.
Purpose of the Study:
- To evaluate the impact of antihypertensive therapy on carotid intima-media thickness (IMT) in hypertensive patients.
- To determine if blood pressure reduction correlates with changes in IMT.
Main Methods:
- 13 hypertensive patients underwent carotid ultrasonography and echocardiography.
- Measurements were taken at baseline, 8 weeks, and 39 weeks after initiating ramipril and felodipine therapy.
Main Results:
- Significant regression of carotid intima-media thickness (IMT) was observed (0.1 mm reduction, P < 0.01).
- Left ventricular mass index also significantly decreased (25 g/m2 reduction, P < 0.01).
- IMT reduction was significantly correlated with mean arterial pressure reduction (r = 0.55, P = 0.05).
Conclusions:
- Antihypertensive therapy with ramipril and felodipine effectively reduces IMT in hypertensive individuals.
- Blood pressure reduction appears to be the primary mechanism driving IMT regression.
- Further large-scale prospective studies are needed to confirm if IMT reduction translates to decreased morbidity and mortality.
Objective:
An increased carotid intima-media thickness (IMT) has been found to be associated with a number of cardiovascular risk factors such as age, hypertension, cigarette smoking, hypercholesterolaemia and left ventricular hypertrophy. Our objective was to assess whether carotid intima-media thickness in hypertensive patients could be reduced by antihypertensive therapy.
Methods:
13 hypertensive patients, 10 previously untreated, were examined using carotid ultrasonography and echocardiography at baseline and then at 8 weeks and 39 weeks after commencement of antihypertensive therapy with ramipril and the second-line addition of felodipine.
Results:
By the end of the study significant regression of IMT (0.1(0.05-0.16) mm, F-value 10.2, P < 0.01) and left ventricular mass index had occurred (25(10.7-39.3) g/m2, F-value 9.7, P < 0.01). The reduction in IMT was significantly related to the reduction in mean arterial pressure, r = 0.55, P = 0.05).
Conclusion:
Antihypertensive therapy with ramipril and felodipine causes regression of IMT in hypertensive patients, probably chiefly through blood pressure reduction. Large prospective studies are required to assess whether a reduction in IMT results in a reduction in morbidity and mortality.