Hypotension Low blood pressure, or hypotension, occurs when the blood pressure during and after each heartbeat is much lower than usual, which means that the heart, brain, and other parts of the body do not receive enough blood.


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  • 1 Description
  • 2 Causes
  • 3 Symptoms
  • 4 Diagnosis
  • 5 Types of hypotension
  • 6 Sources


The hypotension (low pressure) is the state of the systolic and diastolic blood pressure below normal. It is usually considered a normal blood pressure when it is above 90/60 mm Hg. However, it must be considered that what, for one person is low blood pressure, for another may be normal.

When the blood pressure is too low, there is an inadequate flow of blood to the heart , brain and other vital organs , which can cause various pathologies because, together with the blood, not enough oxygen and nutrients reach the cells .


The causes can vary according to the person’s age and sex , as well as according to the specific characteristics of the symptom, such as quality, duration, aggravating factors, relieving factors, and associated diseases.

When the heart pumps blood into the arteries , the force of the blood flow puts pressure on the arterial walls.

Blood pressure may be decreased when the heart pumps slower or less forcefully (expels less blood), when blood is lost ( dehydration or bleeding ), or blood vessels dilate . Other causes include: shock. Stress, nervousness, or trauma .

Blood vessel response to vagus nerve stimulation, called vasovagal syncope (common fainting). Sudden change in body position, usually from lying down to standing up ( orthostatic hypotension ).

Allergic reaction to drugs. Anaphylaxis (allergic reaction that threatens the patient’s life). Drugs , alcohol toxicity, anesthesia , anxiolytics, or medications, such as hypertensive agents, calcium channel blockers, diuretics, general anesthetics, antiarrhythmics , monoamine oxidase inhibitors, narcotic pain relievers , tranquilizers, and vasodilators.


There may be dizziness or vertigo , confusion, blurred vision, and even fainting. These fainting spells can occur after intense physical exercises, when the heart rate drops but the vessels remain dilated.

A typical picture of hypotension occurs when a person sits up quickly and most of the blood volume is concentrated in the legs. Compensatory mechanisms usually fix the situation, but occasionally they are too slow.


If repeated fainting occurs , the causes that determine the fall should be considered.

the pressure : heart or lung abnormalities base volume are searched urine daily, ingested medication.

Likewise, it is evaluated how the episodes are, if they present alarm signs, with what procedures the person’s recovery is achieved.

Healthy people who have had a hypotensive fainting episode generally don’t need too much testing or treatment.

The symptoms described here corresponding to this disease can be confused with those of other pathologies.

To establish a proper diagnosis , always consult your Doctor. The objective of Expert Doctors is to inform and educate, so the descriptions of the diseases provided here are not a substitute for a professional consultation.

Types of hypotension

  • Postural hypotension
  • Ocular hypotension
  • Severe hypotension
  • Arterial hypotension


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