What's a hypertensive crisis? If I notice a spike in my blood pressure, what should I do?
Answers from Sheldon G. Sheps, M.D.
A hypertensive crisis is a severe increase in blood pressure that can lead to a stroke. Extremely high blood pressure — a top number (systolic pressure) of 180 millimeters of mercury (mm Hg) or higher or a bottom number (diastolic pressure) of 120 mm Hg or higher — damages blood vessels. They become inflamed and may leak fluid or blood. As a result, the heart may not be able to pump blood effectively.
Causes of a hypertensive emergency include:
- Forgetting to take your blood pressure medication
- Heart attack
- Heart failure
- Kidney failure
- Rupture of your body's main artery (aorta)
- Interaction between medications
- Convulsions during pregnancy (eclampsia)
A hypertensive crisis is divided into two categories: urgent and emergency. In an urgent hypertensive crisis, your blood pressure is extremely high, but your doctor doesn't suspect you have any damage to your organs. In an emergency hypertensive crisis, your blood pressure is extremely high and has caused damage to your organs. An emergency hypertensive crisis can be associated with life-threatening complications.
Signs and symptoms of a hypertensive crisis that may be life–threatening may include:
- Severe chest pain
- Severe headache, accompanied by confusion and blurred vision
- Nausea and vomiting
- Severe anxiety
- Shortness of breath
If you experience a severe increase in your blood pressure, seek immediate medical attention. Treatment for hypertensive crisis may include hospitalization for treatment with oral or intravenous medications.
Aug. 05, 2014
- Hypertensive crisis. American Heart Association. http://www.heart.org/HEARTORG/Conditions/HighBloodPressure/AboutHighBloodPressure/Hypertensive-Crisis_UCM_301782_Article.jsp. Accessed June 30, 2014.
- Tulman DB, et al. Advances in management of acute hypertension: A concise review. Discovery Medicine. 2012;13:375.
- Kaplan NM. Malignant hypertension and hypertensive encephalopathy in adults. http://www.uptodate.com/home. Accessed July 1, 2014.
- Varon J, et al. Management of severe asymptomatic hypertension (hypertensive urgencies) in adults. http://www.uptodate.com/home. Accessed July 1, 2014.
- The seventh report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure. National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/guidelines/hypertension/. Accessed July 1, 2014.