Cardiac Output by Echocardiography: Systolic Frame Time Ratio (Echocardiographic Measure)

What This Test Measures

Echocardiography uses ultrasound waves to create images of your heart’s structure and function. This specific test focuses on the timing of your heart’s contractions (systolic phase) to calculate how efficiently blood is pumped out of the heart chambers. The frame time ratio compares how quickly the heart contracts with overall cardiac output, which can indicate how well your heart is performing its pumping role.

How the Test Works

During the test, a technician applies gel to your chest and moves a small device (probe) over your skin to capture images of your heart. These images are analyzed to measure the duration of each heartbeat cycle (systolic frame time) and relate it to your heart’s pumping ability. No blood draw is needed, and the procedure is quick and painless.

Why It’s Done

Doctors may order this test if you have symptoms like shortness of breath, fatigue, or swelling, which could signal heart problems. It’s also used to monitor heart conditions like heart failure, valve disorders, or after heart surgery to ensure proper function.

Common Reasons for Testing

This test is particularly useful for evaluating how well your heart is maintaining blood flow to your body. It helps identify issues like abnormal heart rhythms, weakened pumping ability, or structural problems that may affect circulation.