Ischemic Heart Disease Flashcards
1
Q
When is dipyrimadole or adenosine thallium stress test or dobutamine echo the answer?
A
When patients cannot exercise to target heart rate >85% of maximum: COPD amputation deconditioning weakness/previous stroke lower extremity ulcer dementia obesity
2
Q
When is exercise thallium test or stress echocardiogram the answer?
A
When EKG is unreadable for ischemia: left bundle branch block digoxin use pacemaker in place left ventricular hypertrophy Any baseline abnormality of ST segment in EKG
3
Q
When is sestamibi nuclear stress testing use?
A
Use in obese patients and those with large breast due to its ability to penetrate tissue.
4
Q
What is the mechanism of thallium?
A
It binds to Na/K ATPase. It’s like potassiu. This means that lower uptake=damage; because the tissue is dead and can take up potassium/thallium.
