ICL 5.4: Cardiac Imaging Flashcards
which tests are used to evaluate the heart electrical system?
- EKG
- holter.event recorder/ILR
- electrophysiology study/ablation
which tests are used to evaluate chest orientation/size?
CXR
which tests are used to evaluate the coronary arteries?
- stress testing
- CT coronary anatomy
- MRI
- cardiac catheter
which tests are used to evaluate the heart valves and muscles?
- echo
- TEE
- CT
- MRI
which tests are used to evaluate the heart vasculature?
- ultrasound
- MRA
- angiography
what are the indications to get an EKG?
- chest pain/possible myocardial Ischemia
- palpitations/Arrhythmias
- unexplained syncope/preSyncope
- MI
- CHF (systolic and diastolic)
- antiarhythmic drug evaluation
- permanent paceMaker (PPM) or internal cardiac defibrillator (ICD) evaluation
- cardiomyopathy
what are Holter monitors?
ambulatory motors that check heart rhythm 24/7 for 1-3 days –> if you need to measure for longer use an event recorder which works for up to 30 days
you’re not recording a 12 lead EKG but you still will see a P,T and QRS
it’s the snow above grass, fire above coal, chocolate in the middle – white on right
what is an ILR?
ILR = internal loop recorder that’s a subcutaneous implant over the heart tissue that monitors heart rhythm 24/7 and sends info to a website
this is used when symptoms occur less than monthly
also use them in people who have had a cryptogenic stroke aka we don’t know why it happened so you put them in to see if Afib might have bee the reason
can use up to 3 years
what is an electrophysiology study?
we want to check the conduction system in the heart which sits in the endomyocardium
we can put catheters in the high RA kind of mimicking the SA nodes
then we put a second catheter right where the AV node is to find where the His bundle depolarization is
then the third catheter goes into the coronary sinus
what will you see on a CXR of a HF patient?
- wide mediastinum
- fluid in alveoli
- curly B lines coming off the ribs
- pulmonary edema = fluff
what are the indications to get an echocardiography?
- chest pain
- symptoms of HF: DOE or SOB at rest
- palpitations/Arrhythmias
- syncope
- murmur
- abnormal ECG
- suspect LV structural changes/damage
helps you evaluate LV and RV function
what are the special indications for the use of an echo?
- masses, tumors, myxoomas
- embolic source for stroke or TIA
- endocarditis
- congenital heart disease
- cardiac device evaluation
- screen 1st degree relative of cardiomyopathy
what is the continuity equate in a closed flow system?
A1 x V1 = A2 x V2
done with a doppler echo
what are the indications for the use of a TEE?
- further valve assessment
- embolic source for cause of stroke or TI because great view of left atrial appendage
- further asses PFO, ASD, VSD
if someone has palpitations or syncope what test do you do?
ECG and 30 day event recorder before ILR