Evaluating the underlying cause of low blood pressure, helps determine the correct treatment and identify any heart, brain, or nervous system problems that may be responsible.
Low blood pressure diagnosis tests
Doctors may recommend one or more of the following low blood pressure tests:
Hypotension blood tests: These can provide a certain amount of information about the overall health as well as whether have low blood sugar (hypoglycemia) or a low number of red blood cells (anemia), both of which can cause lower than normal blood pressure.
Electrocardiogram (ECG, EKG) for hypotension diagnosis: This non-invasive test, which can be performed in the doctor's office, detects irregularities in the heart rhythm, structural abnormalities in the heart, and problems with the supply of blood and oxygen to the heart muscle. It can also tell if having a heart attack or if have had a heart attack in the past. Sometimes patients may ask to wear a 24-hour Holter monitor to record the heart's electrical activities during daily routine.
Echocardiogram for low blood pressure diagnosis: Using the same technology that allows us to view a fetus in the womb, an echocardiogram uses sound waves to produce images of the heart that may show abnormalities in the heart muscle or valves.
Stress test for hypotension diagnosis: Some heart problems which can cause low blood pressure are easier to diagnose when the heart is working harder than when it is at rest. During a stress test, patient should exercise, such as walking on a treadmill. (Alternatively, may be given medication to make the heart work harder for those who unable to exercise.) When the heart is working harder, health professional will monitor the blood pressure and heart (with echocardiography).
Valsalva maneuver for low blood pressure test: This non-invasive test checks the functioning of the autonomic nervous system by analyzing the heart rate and blood pressure after several cycles of a type of deep breathing (take a deep breath and then force the air out through the lips, as if trying to blow up a stiff balloon.)
Tilt-table low blood pressure test: If have low blood pressure on standing, or from faulty brain signals (neurally mediated hypotension), doctor may suggest a tilt-table test, which evaluates how the body reacts to changes in position. During the test, patient should lie on a table that is tilting to raise the upper part of the body, which simulates the movement from a prone to a standing position.