Final answer:
Orthostatic hypotension is a drop in blood pressure that occurs when changing position, often caused by dehydration or medication. Blood pressure measurements consist of systolic and diastolic pressures, indicating heart activity and fluid balance.
Step-by-step explanation:
Orthostatic Hypotension:
When changing position from sitting or lying down to standing, blood pressure may drop temporarily, causing dizziness. This is known as orthostatic hypotension. It can be caused by factors such as dehydration, medications that affect fluid balance, or autonomic failure.
Blood Pressure:
Common blood pressure measurements consist of systolic and diastolic pressures. Systolic pressure refers to the pressure in the arteries when the heart beats, while diastolic pressure refers to the pressure when the heart is at rest. Both pressures have health implications and can indicate conditions like hypertension or fluid imbalances.