Cardiac pt 2 Flashcards
what can identify coronary plaque burden or vulnerable plaques
MRI
CT
what is chronic ischemic cardiomyopathy typically due to
slow, progressive ddeath of myocytes from chronic ischemia
what is the most common cause of CHD
atherosclerosis
if you want to assess the L side of the heard with a catheter, what artery do you insert it in
brachial artery (goes to aorta)
what type of angina is unrelated to causes of increased myocardial oxygen demand
prinzmetal/vasospastic
what do st segment changes indicate
injury and ischmeia
what does a coronary angiography do
visualizes coronary arteries with florescent dies
patients with transient myocardial ischemia present clinically with:
stable angina pectoris
ischemic cardiomyopathy
what type of angina is characterized by a fixed coronary obstruction blocking response to increased O2 demand
stable
how does atherosclerosis cause cardiac ischemia
thrombus formation
coronary vasospasm
endothelial cell dysfunction
what are acute coronary syndromes
acute changes in plaque morphology
what are the 3 ECG changes indicating and MI
ST depression
ST elevation
T wave inversion
what do people with ACS present with
unstable angina
myocardial infarction
what were MIs and unstable angina typically distingused by
the prescence of absense of serum biomarker levels
what arteries does atherosclerosis typically develop in
large and medium sized arteries
what are some isoforms that are released when cardiomyocytes are damaged
CK-MB
troponin
what is a STEMI
total occlusion of main coronary BV
elevated levels of what is a highly specific indactor of MI
CK-MB
what is cardiac ischemia
oxygen supply is insufficient to meet metabolic demands
what are the 3 patterns of angina pectoris
stable/typical
vasospastic/prinzmetal
unstable/crescendo
what are some signs an symptoms of MI
pain
nausea
diaphoresis
vomiting
if the ECG shows an st elevation, it is a
STEMI
what test can provide estimations of EF and ventricular sys and dia function
echocardiography
what do you need to identify acute and chronic MI
contrast media with MRI
what are chronic coronary syndromes typically due to
chronic obstruction from STABLE atherosclerotic plaques