Orthostatic Hypotension

Orthostatic hypotension, also known as postural hypotension, occurs when a person's blood pressure falls when suddenly standing up from a lying or sitting position. ... Severe drops in blood pressure can lead to fainting, with a possibility of injury. Orthostatic hypotension is defined as a fall in systolic blood pressure of at least 20 mmhg and/or in the diastolic blood pressure of at least 10 mmhg between the supine reading and the upright reading.

SYMPTOMS

• Feeling lightheaded or dizzy after standing up.
• Blurry vision.
• Weakness.
• Fainting (syncope)
• Confusion.
• Nausea.

CAUSES

Mild dehydration can cause symptoms of orthostatic hypotension, such as weakness, dizziness and fatigue. Heart problems. Some heart conditions that can lead to low blood pressure include extremely low heart rate (bradycardia), heart valve problems, heart attack and heart failure.