NHSGGC - Orthostatic Hypotension (OH)
What is Orthostatic Hypotension?
Orthostatic Hypotension (OH), also known as postural hypotension, is a condition in which a person's blood pressure drops significantly upon standing up from a sitting or lying position. This condition can lead to dizziness, lightheadedness, or even fainting. It is particularly common among older adults and people with certain medical conditions.
Causes of Orthostatic Hypotension
OH can be caused by a variety of factors, including dehydration, prolonged bed rest, heart problems, diabetes, and certain medications. When you stand up, gravity pulls blood into your legs, and your body must compensate by narrowing blood vessels and increasing your heart rate. If this compensation mechanism fails, OH can occur.
Symptoms of Orthostatic Hypotension
Common symptoms of OH include dizziness, lightheadedness, blurred vision, weakness, and fainting. These symptoms typically occur within a few minutes of standing up and may improve when sitting or lying down. Severe cases can result in falls, which pose a significant health risk, particularly for elderly patients.
Diagnosis and Treatment
Diagnosis of OH is usually determined through a physical examination and patient history. Doctors may conduct a tilt table test to measure blood pressure changes upon standing. Treatment may involve lifestyle changes such as increased fluid and salt intake, wearing compression stockings, or adjusting medications that contribute to the condition. In some cases, medication may be prescribed to help manage symptoms.
Managing Orthostatic Hypotension
Management of OH often focuses on lifestyle modifications. Ensuring adequate hydration, rising slowly from seated or lying positions, and avoiding prolonged standing can help mitigate symptoms. Patients are encouraged to consult with their healthcare provider at the NHS Greater Glasgow and Clyde (NHSGGC) for personalised advice and treatment plans.
Frequently Asked Questions
What is orthostatic hypotension?
Orthostatic hypotension (OH) is a condition where your blood pressure drops significantly when you stand up from sitting or lying down, leading to dizziness or lightheadedness.
What are the common symptoms of orthostatic hypotension?
Common symptoms include dizziness, lightheadedness, blurred vision, weakness, fatigue, and in severe cases, fainting when standing up.
What causes orthostatic hypotension?
Orthostatic hypotension can be caused by dehydration, prolonged bed rest, certain medications, and underlying medical conditions like diabetes, heart failure, and Parkinson's disease.
How is orthostatic hypotension diagnosed?
Diagnosis typically involves measuring your blood pressure while lying down and then again after standing up. A significant drop in blood pressure confirms the diagnosis.
What lifestyle changes can help manage orthostatic hypotension?
Increasing fluid and salt intake, wearing compression stockings, and avoiding standing up too quickly can help manage symptoms. It's important to consult your doctor before making these changes.
Can medications be used to treat orthostatic hypotension?
Yes, medications such as fludrocortisone or midodrine may be prescribed to manage orthostatic hypotension, but treatment is individualised based on the patient's condition.
Is orthostatic hypotension dangerous?
While it can cause discomfort and increase the risk of falls, it is usually manageable with lifestyle changes and medication. However, severe cases can indicate an underlying health issue that needs treatment.
What should I do if I feel dizzy after standing up?
If you feel dizzy, sit or lie down immediately to prevent falling. Drink water if dehydrated and seek medical advice if symptoms persist.
Can dehydration cause orthostatic hypotension?
Yes, dehydration can reduce blood volume, leading to a drop in blood pressure and causing orthostatic hypotension.
How does orthostatic hypotension differ from other types of hypotension?
Orthostatic hypotension specifically refers to a drop in blood pressure upon standing, whereas other types of hypotension may not be related to changes in posture.
Is orthostatic hypotension more common in certain age groups?
Yes, it is more common in older adults due to age-related changes in blood pressure regulation and an increased likelihood of chronic conditions and medications that affect blood pressure.
Can orthostatic hypotension be a side effect of medications?
Yes, certain medications, including diuretics, antidepressants, and medications for Parkinson’s disease, can cause orthostatic hypotension.
How can compression stockings help with orthostatic hypotension?
Compression stockings can help by improving blood flow and preventing blood from pooling in the legs, which reduces the risk of a sudden drop in blood pressure upon standing.
Should I avoid caffeine if I have orthostatic hypotension?
Caffeine can temporarily raise blood pressure, but it can also cause dehydration. It’s best to consult your doctor regarding caffeine intake if you have orthostatic hypotension.
Can orthostatic hypotension be prevented?
While it may not be entirely preventable, steps like staying hydrated, moving slowly from sitting to standing, and managing underlying health conditions can reduce the risk and severity of symptoms.
Useful Links
Useful links from: How to take someone's blood pressure
- NHS - How to check your blood pressure This NHS page provides detailed instructions on how to check your blood pressure at home, including what you need, how to prepare, and the correct technique.
- Blood Pressure UK - Measuring your blood pressure at home Guide from Blood Pressure UK, a British charity, on how to measure blood pressure at home, including tips on selecting and using a home monitor.
- British Heart Foundation - How to check your blood pressure The British Heart Foundation provides a straightforward guide on how to check your blood pressure, what the readings mean, and why it is important.
- NHS Inform - How to measure blood pressure NHS Inform offers an easy-to-follow guide on measuring blood pressure, including preparation steps, correct posture, and how to read the results.
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