1. Understanding the Definitions and Stages of Hypertension
Pediatric hypertension is categorized differently than in adults. According to the 2017 AAP guidelines, for children 12 years and under, hypertension is defined as a blood pressure greater than or equal to the 95th percentile for age, sex, and height across three clinic visits. For those 13 and older, a blood pressure of 130/80 or higher is considered hypertensive. It’s essential to ensure proper measurement technique, with a cuff covering 40% of the upper arm’s circumference, to avoid misclassification.
2. Recognizing Hypertensive Crisis
A hypertensive crisis can be categorized as either an emergency (with symptoms of end-organ damage) or urgency (elevated BP without significant symptoms). Symptoms to watch for include headache, vision changes, seizures, congestive heart failure, and acute kidney injury. Clinical judgment is key, as urgency can quickly escalate to an emergency. While blood pressures exceeding the 99th percentile are concerning, a child’s baseline and presenting symptoms should guide your management.
3. Treatment Approach: Safely Lowering Blood Pressure
When managing hypertensive crises, the goal is to reduce blood pressure gradually to prevent hypoperfusion and organ damage.* In the first 6-8 hours, aim for a 25% reduction of the total BP decrease needed, with further reductions over 24-48 hours. IV medications in bolus form (labetalol or hydralazine) or a drip (labetalol or nicardipine) are commonly used in emergencies, while oral agents like nifedipine or clonidine are appropriate for less severe cases. Always consider the child’s underlying condition when choosing medications to avoid complications like rebound hypertension or worsening organ perfusion.
*Ensure no intracranial pathology
Editor’s Note: Want more on hypertensive emergencies in the Pediatric ER? Check Out PEMBlog’s recent post here! ~JB
Note: This post is based on a presentation given by Dr. Abby Basalely at the Annual Pediatric Emergency Medicine Symposium held by Cohen Children’s Medical Center. For more information about attending future symposiums, please email Dr. Josh Rocker at jrocker@northwell.edu
Dr. Abby Basalely, MD, is a Pediatric Nephrologist at Cohen Children’s Medical Center. She can be reached at ABasalely@northwell.edu.
