Low B.P is the force of blood pushing against the walls of the arteries as the heart pumps out blood. Blood pressure is indicated by two numbers, the systolic blood pressure (top number) and the diastolic blood pressure (bottom number), which are the maximum and minimum blood pressures, respectively. A systolic blood pressure of fewer than 90 millimeters of mercury (mm Hg) or diastolic of less than 60 mm Hg is generally considered to be hypotension. Different numbers apply to children. However, in practice, blood pressure is considered too low only if noticeable symptoms are present.
Blood pressure is measured when your heartbeats, and in the periods of rest between heartbeats. The measurement of your blood pumping through your arteries when the ventricles of the heart squeeze are called systolic pressure or systole. The measurement for the periods of rest is called diastolic pressure, or diastole. Hypotension is the opposite of hypertension, which is high blood pressure. It is best understood as a physiological state rather than a disease. Severely it can deprive the brain and other vital organs of oxygen and nutrients, leading to a life-threatening condition called shock.
It can be caused by low blood volume, hormonal changes, widening of blood vessels, anemia, heart problems, or endocrine problems. Some medications can also lead to hypotension. There are also syndromes that can cause hypotension in patients including orthostatic hypotension, vasovagal syncope, and other rarer conditions.
Treatment of low b.p high pulse may include the use of intravenous fluids or vasopressors. When using vasopressors, trying to achieve a mean arterial pressure (MAP) of greater than 70 mm Hg does not appear to result in better outcomes than trying to achieve a MAP of greater than 65 mm Hg in adults.
Symptoms of Low B.P
- Chest pain
- Shortness of breath
- Irregular heartbeat
- Fever higher than 38.3 °C (101 °F)
- Stiff neck
- Severe upper back pain
- Cough with sputum
- Prolonged diarrhea or vomiting
- Dyspepsia (indigestion)
- Dysuria (painful urination)
- Acute, life-threatening allergic reaction