👉 The term "preaggravate" is a medical term used to describe an increase in the rate of heart rate before a cardiac event, such as a heart attack or a stroke. It can be defined as: 1. A decrease in the rate of heart rate before a cardiac event. 2. The process by which the heart's activity increases before a specific event occurs, such as when a person has an episode of angina, where the heart is contracting faster than normal. 3. The