Final answer:
The condition associated with increased cardiovascular mortality in nocturnal ambulatory blood pressure is increased blood pressure. Hypertension during the night suggests a higher cardiovascular risk, linked to poor outcomes such as stroke and heart attack.
Step-by-step explanation:
The finding associated with increased cardiovascular mortality in nocturnal ambulatory blood pressure is increased blood pressure. Hypertension, or high blood pressure, is known to increase the risk of cardiovascular diseases such as stroke and heart attack. Blood pressure is the force exerted by circulating blood upon the walls of blood vessels, and normal levels are necessary for the healthy functioning of the body. Increased nocturnal ambulatory blood pressure suggests that there is an abnormal rise in blood pressure during the night, which is often a bad prognostic sign, as it indicates a higher cardiovascular risk. Indeed, a non-dipping or reverse-dipping pattern (where blood pressure does not decrease or increase at night, respectively) has been linked with worse cardiovascular outcomes. High diastolic pressure can indicate that blood vessels are not properly dilating, which can place a strain on the heart as it tries to pump blood, potentially leading to cardiovascular events. Moreover, chronic high systolic pressure is a significant risk factor for stroke and heart attack.