Cardiology Flashcards
pathology of myocardial infarction
occlusion of a coronary vessel
patient presentation of myocardial infarction
chest pain that is worse with exertion, better with rest, relieved with nitrates in a hypertensive, diabetic, dyslipidemic smoker, who is old
diagnosis of myocardial infarction
ST segment changes = STEMI
biomarker elevation = NSTEMI
Stress test = CAD
Coronary angiogram = best test
treatment of myocardial infarction
MONA = morphine, oxygen, nitrates, aspirin
BASH = ß blocker, ACE-i, statin, heparin
Coronary angiography with stent (single vessel disease)
CABG (multi-vessel disease)
tPA if no transport available (>60mins)
risk factors and goals for myocardial infarction
HTN = <140/90 Diabetes = A1c < 7.0 Smoking = cessation dyslipidemia = LDL <100, better <70; HDL > 40, better > 60 age = women >55, men >45
story of MI
left-sided/substernal
worse with exertion
better with rest
physical exam of MI
nonpositional
nonpleuritic
nontender (not reproducible)
Pain, relief, trops, ST changes in stable angina
Pain = exercise
relief = rest + nitrates
trops = negative
ST changes = none
Pain, relief, trops, ST changes in unstable angina
pain = @ rest
relief = none
trops = negative
ST changes = none
Pain, relief, trops, ST changes in NSTEMI
pain = @ rest
relief = none
trops = elevated
ST changes = none
Pain, relief, trops, ST changes in STEMI
pain = @ rest
relief = none
trops = increased
ST changes = elevated
ACUTE treatment options in MI
ASA = first drug to give
Nitrates = second
Angioplasty = no clopidogrel needed, only in single-vessel disease
Bare-metal stent = clopidogrel x1mo, only in single-vessel disease
Drug-eluting stent = clopidogrel x1yr, only in single-vessel disease
CABG = left mainstem equivalent or multi-vessel disease
tPA = no PCI is available within 60mins transport time
Door-to-ballon = 90mins
door to balloon time in MI
90 mins
chronic treatment options in MI
ß blocker = <140/90, HR <70 ACE-i = BP <140/90 Aspirin = antiplatelet Clopidogrel = antiplatelet Statins = LDL < 100 (prefer <70)
imaging in MI
EKG = test of choice, no baseline abnormality Echo = EKG abnormality, no CABG Nuclear = CABG, Baseline Wall defects, LBBB
stress test
exercise = test of choice, no contraindication to exercise with feet
pharm = any reason why they can’t get on a treadmill of any kind
- dobutamine and adenosine
complications of MI
RV failure = right-sided EKG, NO NITRATES
aneurysm = diagnosed by echo
arrhythmia = vtach/vfib - ventricular ectopy from dying cells; Brady/blocks - AV nodal dysfunction
left sided heart failure
pulmonary edema, shortness of breath, crackles, dyspnea on exertion, orthopnea, paroxysmal nocturnal dyspnea
S3
right sided heart failure
JVD, peripheral edema, abdominal pain
systolic heart failure
floppy (ischemic/chronic), leaky (valves), or dead (ischemic)
depressed ejection fraction
poor forward flow
diastolic heart failure
stiff ventricle, unable to fill
pericardium (tamponade, constrictive pericarditis)
restrictive or hypertrophic cardiomyopathy
NYHA classifications of heart failure
I = no symptoms, unlimited exertional capacity II = slight limitation: comfortable with exertion and rest, but without unlimited capacity (ok ADLs) III = moderate limitation: comfortable at rest only (no ADLs) IV = severe limitations, patient is dyspneic at rest
diagnostic choices for heart failure
cxr ekg bnp 2d echo nuclear angiogram, LV gram angiogram, coronaries
cxr in heart failure
large heart, generally useless