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[Treatment of arterial hypertension in children]
Insights
Understanding pediatric hypertension requires evaluating cardiac output, peripheral vascular resistance, and blood volume. Treatment strategies for hypertensive crises in children vary based on the underlying cause, differentiating between hypervolemia and vasoconstriction.
Area of Science:
- Pediatric Nephrology
- Cardiovascular Physiology
- Pharmacology
Context:
- Pediatric hypertension etiology is multifactorial, involving cardiac output, peripheral vascular resistance, and blood volume.
- Key factors include increased peripheral vascular resistance (renin-dependent) and increased blood volume (sodium-dependent).
- Specific conditions like acute glomerulonephritis (hypervolemia) and renal segmental hypoplasia (vasoconstriction) highlight distinct pathophysiological mechanisms.
Purpose:
- To outline a therapeutic approach for acute hypertensive crises in children.
- To review commonly used antihypertensive medications in pediatric practice.
- To detail mechanisms of action, indications, dosages, and side effects of pediatric antihypertensives.
Summary:
- Blood pressure regulation involves cardiac output, peripheral vascular resistance, and blood volume.
- Hypertension in children can stem from increased resistance or volume, necessitating individualized assessment.
- Diuretics are for hypervolemia, while antihypertensives target vasoconstriction; treatment schemes for acute crises are presented.
Impact:
- Provides a framework for managing pediatric hypertensive emergencies.
- Offers essential pharmacological information for clinicians treating children with hypertension.
- Facilitates evidence-based therapeutic decisions in pediatric nephrology and cardiology.
Abstract:
The blood pressure is the resultant of the relationship of three different factors: cardiac output, peripheral vascular resistance and blood volume. The etiology of hypertension in children is variable; however increased peripheral vascular resistance (renin dependent) and increased blood volume (sodium dependent), play a role in a variable degree in most cases of hypertension. Increased blood volume is the predominant factor in some cases of (acute glomerulonephritis), whereas vasoconstriction is the most important mechanism in others (renal segmental hypoplasia). Therefore, it becomes important to evaluate each individual case in order to approach therapy. Diuretics are indicated in patients with hypertension secondary to hypervolemia, while antihypertensives are more useful in cases with vasoconstriction. The scheme of treatment for acute hypertensive crises followed in the Department of Nephrology of the Hospital Infantil de Mexico is presented by the authors. A review of the most commonly antihypertensives used in Pediatrics is made, regarding mainly mechanisms of action, indications, recommended doses and side effects.