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Hypertension in valvar aortic stenosis
Insights
Hypertension is common in patients with aortic stenosis, affecting over 40% of cases. Elevated blood pressure correlates with age and complicates the assessment of aortic stenosis severity, increasing left ventricular workload.
Area of Science:
- Cardiology
- Hypertension Research
- Valvular Heart Disease
Background:
- Aortic stenosis is a common valvular heart disease.
- Hypertension is a prevalent comorbidity in the general population.
- The interplay between aortic stenosis and hypertension requires further investigation.
Purpose of the Study:
- To determine the prevalence of hypertension in patients with aortic stenosis.
- To investigate the relationship between blood pressure and age in this cohort.
- To understand how hypertension impacts the assessment of aortic stenosis.
Main Methods:
- Retrospective analysis of 50 patients with catheter-proven aortic stenosis.
- Indirect arterial blood pressure measurements were taken.
- Hypertension was defined using standard clinical thresholds (140/90mmHg).
Main Results:
- Over 40% of patients exhibited some form of hypertension (borderline, mild, or severe).
- Systolic and diastolic blood pressures showed a significant positive correlation with age.
- The rate of blood pressure increase with age was similar to the normal population, except in individuals over 70.
Conclusions:
- Hypertension is a frequent finding in aortic stenosis patients.
- Elevated blood pressure complicates the accurate clinical and hemodynamic assessment of aortic stenosis.
- The combined effects of aortic stenosis and hypertension increase the systolic burden on the left ventricle.
Abstract:
The indirect arterial blood pressure in 50 cases of catheter-proven aortic stenosis without significant incompetence was examined. Defining the upper limit of normal blood pressure as 140/90mmHg, 14 percent had borderline, 18 percent had mild and 8 percent had severe hypertension. There was a significant positive correlation of systolic and diastolic blood pressure with age; ie pressures rose with age. The rate of increase was virtually identical with that of the normal population except for those over 70. Hypertension interferes with reliable clinical and haemodynamic quantitation of the valve lesion. The two lesions summate to increase the systolic burden on left ventricle.