The NHS has a general guide that can tell you if your reading is within the normal range: Low blood pressure: under 89/59mmHg. Normal blood pressure: between 90/60 mmHg and 120/80 mmHg. High-normal blood pressure: between 120/80 mmHg and 140/90 mmHg - you may be at risk of high blood pressure in the future.
For most adults, a normal blood pressure is usually less than 120/80 mm Hg. Low blood pressure is blood pressure that is lower than 90/60 mm Hg.
FAQs About Low Blood Pressure
A reading below 90/60 mmHg, especially with symptoms like fainting or chest pain, is considered dangerous and requires immediate medical attention.
An ideal blood pressure for most adults is lower than 120/80 mm Hg (millimeters of mercury). This means your systolic (top) number is below 120 and your diastolic (bottom) number is below 80. But blood pressure that's too low may be a cause for concern. Hypotension is blood pressure below 90/60 mm Hg.
Yes, low blood pressure (hypotension), especially sudden drops or chronic low levels, can increase stroke risk by reducing blood flow and oxygen to the brain, leading to ischemic strokes, particularly "watershed strokes" in vulnerable brain areas. While high blood pressure is a primary stroke risk, very low blood pressure, often due to underlying issues like dehydration, heart problems, or certain medications, can be dangerous, causing clots to form or preventing sufficient blood from reaching the brain, making it crucial to manage BP in both high and low ranges.
A dangerously low blood pressure (hypotension) is generally below 90/60 mmHg, especially when accompanied by symptoms like dizziness, fainting, confusion, or blurry vision, indicating vital organs aren't getting enough oxygen and requiring urgent care. While low readings (under 90/60 mmHg) might be normal for some, a sudden, significant drop (even 20 mmHg) or severe symptoms can signal a serious issue like shock, infection, or bleeding, making immediate medical attention crucial.
Other signs and symptoms may include:
Symptoms of low blood pressure may include:
The lower number indicates how much pressure the blood is exerting against artery walls while the heart is at rest between beats. When an individual is approaching death, the systolic blood pressure will typically drop below 95mm Hg. However, this number can vary greatly as some individuals will always run low.
(Finger or wrist monitors are not considered reliable.) The blood pressure cuff needs to fit well, since cuffs that are too small will give falsely elevated readings. "I have a patient who was getting very high readings that were different in both arms," Dr. Cannon says.
Treatments can range from simple IV fluids to antibiotics to surgery or even a heart transplant. Some people with low blood pressure need a hospital stay.
A number of studies have provided strong evidence for reduced cognitive performance in hypotension, particularly in the domains of attention and memory. EEG studies have demonstrated that the hypotension-related poorer mental ability is also reflected in diminished cortical activity.
There are several lifestyle changes that someone with low diastolic blood pressure can make to manage their condition:
Constantly low blood pressure can be dangerous if it causes signs and symptoms such as:
Call an ambulance or go to a hospital emergency department if you have symptoms of low blood pressure and: chest pain. breathlessness. a racing heart.
Changes to breathing
Breathing changes as death approaches. It may slow down or become quick and shallow. Sometimes breathing may stop for several seconds at a time and then start again. An irregular breathing pattern, called Cheyne-Stokes respirations, is common in people who are dying.
Yes, severe low blood pressure (hypotension) can be fatal, as it starves vital organs like the brain and heart of oxygen, leading to shock, organ failure, stroke, heart attack, or death, especially if it's a sudden, drastic drop from serious conditions like severe bleeding, infection, or allergic reaction. While mild cases are often harmless, extreme hypotension requires immediate medical attention to prevent life-threatening complications.
5 tips to try if you have low blood pressure
Yes, low blood pressure (hypotension), especially sudden drops or chronic low levels, can increase stroke risk by reducing blood flow and oxygen to the brain, leading to ischemic strokes, particularly "watershed strokes" in vulnerable brain areas. While high blood pressure is a primary stroke risk, very low blood pressure, often due to underlying issues like dehydration, heart problems, or certain medications, can be dangerous, causing clots to form or preventing sufficient blood from reaching the brain, making it crucial to manage BP in both high and low ranges.
You could also try:
The danger zone for low blood pressure is below 90 mmHg systolic or 60 mmHg diastolic.
Even without obvious symptoms, silent strokes raise the risk of future strokes and can lead to cognitive decline or vascular dementia. Key warning signs include sudden mood changes, memory issues, balance problems, and cognitive difficulties — but only MRI or CT scans can confirm a silent stroke.
Trouble speaking or understanding. Problems with vision, such as dimness or loss of vision in one or both eyes. Dizziness or problems with balance or coordination. Problems with movement or walking.
Pre-strokes or mini strokes are the common terms used to describe a transient ischemic attack (TIA). Unlike a full blown stroke, a TIA only lasts a few minutes and does not cause permanent damage. Nevertheless it is a warning sign that a possible stroke may be coming in the future.