Failure to confirm high blood pressures in pediatric care-quantifying the risks of misclassification

Area of Science:

• Pediatric Medicine
• Cardiovascular Health
• Clinical Practice Guidelines

Background:

• Current pediatric practice guidelines recommend repeating elevated office blood pressure (BP) readings during the same visit.
• However, limited data exist to support this recommendation for accurate hypertension diagnosis in children.

Purpose of the Study:

• To evaluate the impact of repeating elevated BP readings on the accuracy of pediatric hypertension classification.
• To assess the rate of sustained hypertension after an initial elevated reading in children.

Main Methods:

• Retrospective analysis of electronic medical records for 186,732 children aged 3-17 years with an initial BP reading ≥95th percentile.
• Comparison of visit outcomes based on initial BP reading versus the mean of two BP readings.
• Analysis of hypertension diagnosis and staging in subsequent visits.

Main Results:

• Failure to repeat an initial elevated BP reading (≥95th percentile) resulted in a false "hypertensive" visit classification in 54.1% of children.
• Sustained hypertension (Stage I or II) was observed in 2.3% and 11.3% of youth, respectively, after an initial elevated reading.
• Only about half of pediatric patients were correctly classified based on their initial BP reading alone.

Conclusions:

• Repeating elevated BP readings during the same visit is essential for accurate pediatric hypertension diagnosis.
• Emphasizing this guideline can prevent unnecessary follow-up visits and reduce misdiagnosis rates in children.
• Accurate classification based on repeated measurements improves patient management and resource allocation.