Which group has the lowest normal blood pressure reading range?

The group characterized by the lowest normal blood pressure reading range is preschoolers. Blood pressure levels naturally tend to be lower in younger children due to smaller body size and lower blood volume compared to older populations.

Preschoolers, typically ages 3 to 5, have a unique physiological profile that influences their blood pressure readings, resulting in lower normal ranges, often reflecting values around 90-110 systolic and 50-70 diastolic. As children grow older and their body size increases, their blood pressure readings generally increase as well.

In contrast, the other groups, which include elementary students, middle school students, and high school students, generally have higher blood pressure ranges as they age, reach greater body size and develop more muscle mass. Understanding these physiological differences is crucial for assessing and interpreting blood pressure readings appropriately for various age groups.