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Patients with adrenal zona fasciculata 11-hydroxylase deficiency show different blood pressure readings at home versus in clinic. This variability highlights the importance of considering measurement location for accurate hypertension diagnosis.
Area of Science:
- Nephrology
- Endocrinology
- Cardiovascular Medicine
Background:
- Renovascular hypertension and partial deficiency of adrenal zona fasciculata 11-hydroxylase are distinct hypertensive conditions.
- Understanding blood pressure variability is crucial for accurate diagnosis and management.
Purpose of the Study:
- To compare blood pressure variability between patients with renovascular hypertension and those with partial 11-hydroxylase deficiency.
- To investigate the influence of measurement setting (home vs. clinic) on blood pressure readings in these groups.
Main Methods:
- Comparative study involving two groups of eight hypertensive patients each.
- Home and outpatient clinic blood pressure measurements were recorded.
- Systolic and diastolic blood pressure, mean blood pressure, and heart rate were analyzed.
Main Results:
- Patients with renovascular hypertension had higher home blood pressure than those with 11-hydroxylase deficiency.
- No significant difference in blood pressure was observed between groups in the clinic.
- Patients with 11-hydroxylase deficiency showed a marked increase in blood pressure from home to clinic measurements.
Conclusions:
- The enzymatic impairment in 11-hydroxylase deficiency may contribute to the discrepancy in blood pressure readings between home and clinic settings.
- Measurement setting significantly impacts blood pressure assessment in patients with partial 11-hydroxylase deficiency, necessitating careful consideration during clinical evaluation.
Abstract:
Blood pressure variability was studied in eight patients with renovascular hypertension (group 1) and eight patients with hypertension and partial deficiency of adrenal zona fasciculata 11-hydroxylase (group 2). Systolic, diastolic and mean blood pressure were found to be higher in group 1 than in group 2 when measured at home (P less than 0.001), while no difference was measured when blood pressure was taken in the outpatient clinic. Heart rate was higher in group 1 than in group 2 both at home and in the clinic (P less than 0.005 and P less than 0.05, respectively); a significant increase was observed only in the hospital clinic for group 2 (P less than 0.001). No difference in systolic function and left ventricular mass was found between the two groups. Finally, group 2 exhibited a significant increase (P less than 0.0001) in systolic, diastolic and mean blood pressure in the clinic, compared with that found at home, while group 1 showed a poor increase (P less than 0.05) in systolic blood pressure only. It is suggested that the enzymatic impairment of adrenal glands in group 2 may play a role in the disparity of blood pressure levels determined at home and in the outpatient clinic. Furthermore, our data suggest that differences in blood pressure measurement at home and in the hospital clinic should be taken into account when screening patients with partial deficiency of 11-hydroxylase.