Ace the EMT Challenge 2026 – Elevate Your Emergency Skills!

Diastolic blood pressure refers to the pressure within the blood vessels when the heart is in the relaxation phase, specifically when the heart's ventricles are filling with blood. This phase occurs between heartbeats, and during this time, the pressure in the arteries decreases because the heart is not actively pumping blood. It is crucial to monitor this pressure as it provides important information about the cardiovascular health of an individual. Understanding diastolic blood pressure helps assess the heart's efficiency in filling and the resilience of blood vessels under varying conditions.