Final answer:
Hypertension, or high blood pressure, is characterized by consistently elevated blood pressure readings of 140/90 mm Hg or above. It can lead to various health complications. Individuals with a known history of Stage 3 hypertension typically exhibit blood pressure readings that consistently exceed 140/90.
Step-by-step explanation:
Hypertension, also known as high blood pressure, is defined as chronically elevated blood pressure readings of 140/90 mm Hg or above. This means that individuals with a known history of Stage 3 hypertension typically exhibit blood pressure readings consistently exceeding 140/90. Hypertension can lead to serious health complications such as heart attack, stroke, aneurysm, peripheral arterial disease, chronic kidney disease, and heart failure.