Low Blood Pressure


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By Medicover Hospitals / 26 Feb 2021
Home | symptoms | low-blood-pressure
  • Low blood pressure, also called hypotension, is blood pressure low enough that blood flow to the body's organs is inadequate and signs of low blood flow develop. Low blood pressure alone, without symptoms or signs, is not harmful to health.
  • Article Context:

    1. What is Low Blood Pressure?
    2. Causes
    3. Diagnosis
    4. Treatment
    5. When to visit a Doctor?
    6. Prevention
    7. FAQ's

    What is Low Blood Pressure?

  • Hypotension is low blood pressure. Your blood pushes against your arteries with each beat. And the pushing of blood against the walls of the arteries is called blood pressure. Low blood pressure or hypotension is most often defined as any reading below 90 mmHg above 60 mmHg.
  • Low blood pressure, though, can make you feel exhausted or dizzy. In those cases, hypotension may be a sign of an underlying condition that needs to be treated.
  • Blood pressure is measured when the heart beats and in the rest periods between beats. The measurement of the pumping of blood through the arteries when the heart's ventricles contract called systolic pressure or systole. The measure of rest periods is called diastolic pressure or diastole.
  • Systole supplies blood to your body, and diastole supplies blood to the heart by filling the coronary arteries. Blood pressure above the diastolic number is written for the systolic number. Hypotension in adults is defined as a blood pressure of 90/60 or less.
  • Types of Migraine:

  • Hypotension is divided into several classifications based on when the blood pressure drops.
  • Orthostatic:

  • Orthostatic hypotension is the drop in blood pressure that occurs when you go from sitting or lying down to standing. It is common among people of all ages. As the body adjusts to the change in position, there may be a brief period of dizziness. This is what some people call "seeing stars" when they rise.
  • Postprandial:

  • Postprandial hypotension is a drop in blood pressure that occurs immediately after eating. It is a type of orthostatic hypotension. Older adults are more likely to experience postprandial hypotension, especially those with Parkinson's disease.
  • Neurally mediated:

  • Since standing for a long time, neurally induced hypotension exists. More commonly than adults, children undergo this type of hypotension. Emotionally disturbing incidents can also cause this decrease in blood pressure.
  • Severe:

  • Severe hypotension is related to shock. Shock occurs when your organs don't get the blood and oxygen they need to function properly. If not treated immediately, serious hypotension can be life-threatening.
  • Causes:

  • Everyone's blood pressure drops at one point or another. And it also causes no visible signs at all. Certain disorders can induce extended hypotension cycles that, if left unchecked, can become harmful. These conditions include:
    • pregnancy, due to increased demand for blood from both the mother and the growing fetus
    • large amounts of blood loss from injuries
    • impaired circulation caused by heart attacks or faulty heart valves
    • weakness and shock sometimes accompanying dehydration
    • anaphylactic shock, a severe form of an allergic reaction
    • bloodstream infections
    • endocrine disorders such as diabetes, adrenal insufficiency, and thyroid disease
    • medicines can also lower blood pressure. Beta-blockers and nitroglycerin, which are used to treat heart disease, are the common culprits. Diuretics, tricyclic antidepressants, and erectile dysfunction medications may also cause hypotension.
  • For unexplained causes, certain persons have low blood pressure. This form of hypotension, called chronic asymptomatic hypotension, is usually not harmful.
  • Diagnosis:

  • There are different types of blood pressure monitors available. It's best to take multiple readings to see if the problem continues.
  • Devices used by healthcare professionals in a healthcare setting may require them to listen to pressure changes with a stethoscope while reading a mercury meter.
  • A doctor may also ask the client about his or her medical history and any symptoms. They may do other tests to rule out an underlying problem.
  • Diagnosis can help balance blood pressure. Your doctor can prescribe basic tests, such as:
    • blood tests to check hormone levels, blood sugar levels, and to detect infections
    • an electrocardiogram (ECG) or Holter monitor to check the rhythm and function of the heart
    • an echocardiogram to check your heart health
    • a stress test to monitor your heart health
    • a tilt table test to monitor low blood pressure because of changes in body position
    • the valsalva maneuver, a breathing test to detect the nervous system causes of low blood pressure


  • There's no need for medication for most people with low blood pressure. However, if hypotension starts suddenly or results from an underlying condition, a doctor will provide treatment. Options for treatment will depend on the cause. It Involves:
    • Use more salt: Doctors suggest reducing salt in your diet because sodium will, often significantly, increase blood pressure. For people with low blood pressure, that can be a good thing. But because too much sodium can lead to heart failure, especially in older adults, it's important to check with your doctor before increasing the salt in your diet.
    • Drink more water: Fluids improve the flow of blood and help reduce dehydration, all of which are essential for hypotension care.
    • Wear compression stockings: Stretch stockings commonly used to relieve pain and swelling from varicose veins can help reduce blood pooling in the legs. Some people tolerate elastic abdominal girdles better than compression stockings.
    • Medicines: Various medications can treat low blood pressure that occurs when you stand up (orthostatic hypotension). For example, to relieve this type of low blood pressure, the medication fludrocortisone, which raises blood flow, is sometimes used.
    • When to visit a Doctor?

      • A person should seek medical advice if their blood pressure drops suddenly, is very low, or is significantly lower than normal.
      • They should also seek advice if they have other symptoms, such as excessive urination, fever, or fatigue, as they could show an underlying condition.
      • With very low blood pressure, insufficient blood and oxygen can reach the brain and other vital organs. Emergency medical attention may be necessary.
      • If a person shows signs of anaphylaxis, whoever is with them should act immediately. If the person has an autoinjector, a bystander can help administer it.


    • A variety of lifestyle measures can help prevent low blood pressure. These include:
      • get up from a sitting or lying position
      • use blocks to raise the head of the bed 6 inches
      • eat small meals frequently and rest after eating
      • increase fluid intake
      • avoid prolonged periods of sitting or standing
      • avoid suddenly changing posture or position
      • moderate alcohol intake
      • refrain from drinking caffeinated beverages at the end of the day
      • wear support stockings

      Frequently Asked Questions:

    • For adults, average blood pressure is normally in the range of 90/50 to 120/90 mm Hg. Hypotension is abnormally low blood pressure, usually below 90/50 mm Hg.
    • Try eating canned soup, smoked fish, cottage cheese, pickles, and olives. Caffeine. Caffeinated coffee and tea can temporarily increase blood pressure by stimulating the cardiovascular system and increasing the heart rate.
    • Sleep on your stomach to lower your blood pressure.
    • In some patients, drinking water raises systolic blood pressure by 100 mm Hg, which can lead to dangerously high blood pressure in the supine position.
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