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Prediction of primary vs secondary hypertension in children
Rossana Baracco1, Gaurav Kapur, Tej Mattoo
1Department of Pediatric Nephrology, Children's Hospital of Michigan, Wayne State University, Detroit, MI 48201, USA.
Insights
Diagnosing hypertension in children can vary. Younger children (5-12 years) with abnormal renal ultrasounds and high diastolic blood pressure are more likely to have secondary hypertension, requiring further evaluation.
Area of Science:
- Pediatric Nephrology
- Cardiovascular Health in Children
- Diagnostic Workup in Pediatrics
Background:
- Hypertension diagnosis in children lacks standardized workup protocols, leading to variability.
- Physician preferences significantly influence the diagnostic approach for pediatric hypertension.
Purpose of the Study:
- To compare diagnostic investigations for primary versus secondary hypertension in children.
- To identify risk factors and predictors for secondary hypertension in pediatric patients.
Main Methods:
- Retrospective analysis of hypertensive children aged 5 to 19 years.
- Comparison of abnormal laboratory and imaging test results between primary and secondary hypertension groups.
- Logistic regression and likelihood function analysis to evaluate risk factors.
Main Results:
- Secondary hypertension was more prevalent in younger children (5-12 years).
- Abnormal creatinine, renal ultrasound, and echocardiogram findings were more common in secondary hypertension.
- Abnormal renal ultrasound and younger age predicted secondary hypertension.
Conclusions:
- Children aged 5-12 with abnormal renal ultrasounds and elevated diastolic blood pressure have a higher risk of secondary hypertension.
- Targeted evaluation is crucial for identifying secondary causes of hypertension in at-risk pediatric populations.
Abstract:
Despite current guidelines, variability exists in the workup of hypertensive children due to physician preferences. The study evaluates primary vs secondary hypertension diagnosis from investigations routinely performed in hypertensive children. This retrospective study included children 5 to 19 years with primary and secondary hypertension. The proportions of abnormal laboratory and imaging tests were compared between primary and secondary hypertension groups. Risk factors for primary vs secondary hypertension were evaluated by logistic regression and likelihood function analysis. Patients with secondary hypertension were younger (5-12 years) and had a higher proportion of abnormal creatinine, renal ultrasound, and echocardiogram findings. There was no significant difference in abnormal results of thyroid function, urine catecholamines, plasma renin, and aldosterone. Abnormal renal ultrasound findings and age were predictors of secondary hypertension by regression and likelihood function analysis. Children aged 5 to 12 years with abnormal renal ultrasound findings and high diastolic blood pressures are at higher risk for secondary hypertension that requires detailed evaluation.
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