What Blood Pressure Is Too Low Dangerous

Most doctors consider blood pressure too low only if it causes symptoms. Some experts define low blood pressure as readings lower than 90 mm Hg systolic or 60 mm Hg diastolic. If either number is below that, your pressure is lower than normal. A sudden fall in blood pressure can be dangerous.

What happens when your blood pressure drops to 70 over 40?

However, 70/40 is a rather low reading, and could definitely cause the need to sit down or feel a little lightheaded. Unusually low readings should be evaluated to rule out medical causes such as orthostatic hypotension, endocrine disorders, fainting, dehydration, severe infection and shock.

What is the lowest your blood pressure can go before death?

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.

Your ideal blood pressure is between 90/60 mmHg and120/80 mmHg. If it gets too low, then you have low blood pressure, or hypotension. You could go into shock from lack of blood and oxygen to your vital organs.