Hammond-Henry Hospital

Testing and Monitoring

Stress Testing

A stress test is used to record the heartbeat during exercise. This helps a doctor determine how well your heart can handle work. This test can be used to diagnose and monitor a number of heart problems. (Read about "Stress Test" and "The Heart & Cardiovascular System")

Thallium Stress Test (nuclear stress test)

A thallium stress test (or nuclear stress test) shows the working of the heart muscle. A small amount of radioactive material is injected into a vein and a camera shows how well blood flows to the heart muscle. It's usually done in conjunction with an exercise stress test on a treadmill or bicycle. (Read about "Stress Test")

Holter Monitoring

A Holter monitor is a type of EKG that continuously records your heart's rhythms. The monitor is worn for a period of time, such as 24 hours, while you go about your normal activities.

At the start of the testing time period, electrodes attached to the monitor are connected to your chest. The monitor records your heart's electrical activity during the period of time. Meanwhile, you should be keeping a log of the things you're doing while wearing the monitor. After the period of time is up, you go back to your doctor, who will look at the records and see if there have been any irregular heart rhythms. 

A Holter monitor can be used to monitor a patient after a heart attack (Read about "Heart Attack"), to monitor the effectiveness of heart medications or to check for irregularities in heart rhythm (Read about "Arrhythmia").

30-Day Event Monitor

Event monitors can be similar to Holter monitors, but they are used by patients over a longer period of weeks or months. Electrodes attached to the monitor can be connected to your chest. The monitor is always on but it will record your heart rhythm only when it is activated. The monitor stores the rhythm for review by your doctor. An event monitor can be used to check for irregularities in heart rhythm while you're having symptoms (Read about "Arrhythmia").


Hammond-Henry Hospital Cardiopulmonary Services 
600 North College Avenue
Geneseo, IL  61254
(309) 944-9169