Basic principles of noninvasive blood pressure measurement in infants.

Correct measurement of blood pressure in infants is essential because blood pressure is an important indicator of cardiovascular status. This article provides a review of the fundamental principles of blood pressure measurement. Formulas to estimate mean arterial pressure are discussed along with an overview of pulse pressure. The advantages, challenges, and accuracy of the widely used oscillometric method of noninvasive blood pressure measurement are discussed. A step-by-step guide to noninvasive blood pressure measurement is outlined along with pragmatic strategies to ensure appropriate technique, thereby improving accuracy.