What is a hemodynamic test?

A hemo (blood)-dynamic (flow) test is a nuclear imaging procedure that evaluates the function of the heart and circulation. The test may also be called a technetium (pronounced tek-nee-see-um) hemodynamic test.

What is syncope?

Syncope (pronounced "sin ko pea") is the brief loss of consciousness and posture caused by a temporary decrease in blood flow to the brain. Syncope may be associated with a sudden fall in blood pressure, a decrease in heart rate or changes in blood volume or distribution. The person usually regains consciousness and becomes alert right away, but may experience a brief period of confusion.

Syncope is often the result of an underlying medical condition that could be related to your heart, nervous system or blood flow to the brain.

The hemodynamic test results — along with the results from a blood volume test, heart rate and blood pressure monitoring — help your doctor determine the cause of syncope or certain circulation disorders. The test results also will help your doctor plan a course of treatment.

Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy