Week 10 Flashcards
angina pain can be felt from __
ear lobe to epigastric
coronary flow reserve assessed using __
Glagov’s coronary remodeling hypothesis
how does stress test assess coronary flow reserve
exercise > increased HR & BP > hyperaemic response > augmented coronary flow
what happens during sub total occlusion of acute coronary syndrome
sub-total occlusion > sub-endocardial ischaemia > sub-endocardial infarction
what happens during total occlusion of acute coronary syndrome
total occlusion > transmural ischaemia > transmural infarction
what does ST elevation mean
transmural ischaemia
what does ST depression mean
subendocardial ischaemia
what does non-Q wave mean
subendocardial infarction
what does Q wave mean
transmural infarction
what are pharmacological interventions for acute coronary syndrome
anti-thrombotics
statins
beta-blockers
ACE-I/ARB
revascularization
what does MPI mean
myocardial perfusion imaging
where are the rhythmic contractile myocardial cells found
myocardium
BP formula
cardiac output x peripheral vascular resistance
systolic BP measured during __
ventricular contraction
diastolic BP measured during __
relaxation
preload is recorded __
volume at end diastole
afterload is recorded __
force needed for ejection
key arteries of the heart are __
- left anterior descending artery
- left circumflex artery
- right coronary artery
types of acute coronary syndrome
unstable angina = ischemia without infarction
NSTEMI = sub-endocardial infarction
STEMI = full-thickness infarction
what are the findings of aortic stenosis
murmurs, reduced valve area
what are the findings of mitral regurgitation
murmurs, left atrial enlargement
how to manage aortic stenosis
valve replacement
Transcatheter Aortic Valve Implantation
how to manage mitral regurgitation
repair
mitraclip
what are vasodilators used for
reduce pre/after load
what are beta blockers used for
lower HR & BP
what are Ca2+ channel blockers used for
angina & hypertension
what are diuretics used for
increase urine output, reduce edema
what are ACE inhibitors
decrease BP & afterload
what are statins
lowers LDL & cholesterol
what are the different diagnositcs used
ECG
stress test
imaging
blood tests
what are ECGs used to detect
arrhythmias, ischemia, infarction
what are stress tests used to evaluate
coronary flow reserve
what are the different imaging methods
x-rays for cardiac size, echocardiogram, angiography
what blood tests are used for heart
troponins, lipid profiles
what is the pathophysiology of coronary artery disease
atherosclerosis / plaque build up leading to ischemia
what is angina
recurrent chest pain due to oxygen deficit
what is myocardial infarction
ischemia causing muscle necrosis
symptoms of heart failure
dyspnea
edema
fatigue
how many classifications of NYHA are there
stages I - IV