- The patient is a 56 year old male who was referred for an exercise stress thallium due
- to LBBB (left bundle branch block).
- He exercised for 7 minutes and had no chest pain. His peak heart rate was 157 BPM
- ( > 85% of his predicted maximal HR). There were EKG changes with exercise.
|
|
- The thallium scan above shows a mild septal defect with significant
- redistribution in the rest scans, consistent with ischemia.
- Since LBBB can cause a false positive scan with exercise, the patient underwent
- a persantine stress test (a pharmacologic stress test). The chance of a false
- positive scan with persantine in a patient with LBBB is much less.
|
|
- The thallium scan above shows no septal defect suggesting that the original septal
- defect with exercise is a false positive scan due to the LBBB.
|
| |
| |
