Cardio Flashcards
T/F
PACs/ APBs (premature atrial contract = atrial premature beat) is a benign arrhythmia
T usually asymptomatic can cause palpitations occasionally --) afib tx when distress or svt
when to treat PAC/APB
(prem at comp / atr prem beat)
when cause distress or svt
(usually asymptomatic, benign)
what does cardiac echo eval for
function (ef) valvular abnorm structural abnorm (wall thick/thin/motion)
how to manage pt w persistent asymptomatic PACs (prem atr contr)
B blockers (rate control)
cold mottled limb with minimal swelling and absent distal pulses w recent hx of mi think…
acute limb ischemia - from heart thrombus embolization (LV thrombus, la thrombus from a fib) or aortic ischemia
-dx test is echo to eval for wall thrombus
next dx test when acute limb ischemia suspected in pt w recent MI
echo
for wall thrombus that may have embolized
also immediate aticoagulation and sx eval
how long after therapy initiation to HIT
5-10 days usually
HIT makes prone to what kind of thrombus, V or A
venous thrombus
-warmth erythema tenderness swelling
which is warm and which is cold A vs V thrombus
arterial thrombus - acute limb ischemia, cold
venous thrombus - warm erythematous tedner swollen
chest sympx of PE
tachypnea
pleuritic chest pain
+ s & s of DVT
mgmt of acute limb ischemia after mi
immediate anticoag
sx eval
TTE (transthoracic echocardiogram)
when does variant/prinzmental angina typically occur
at night (midnight - 8am)
tx variant prinzmental angina
CCB (diltiazem)
or nitrates
transient STEs on EKG suggest
variant/prinzmental angina
T/F
can use BBlockers for variant/prinzmental angina
F
CI - can worsen vasospasm
T/F
can use ASA for variant/prinzmental angina
F
–| prostacyclin, can promote coronary vasospasm
T/F variant angina mgmt usually includes cholesterol lowering meds
F
variant/prinzmental angina often lacks cv risk factors (can manage cholesterol if coincidental elevation)
2 common uses of digoxin
inc contractility in CHF
rate control in afib or aflutter
T/F
heparin to treat uncomplicated variant angina (prinzmental
F
vasospasm not coagulability, no need for hep
immediate mgmt of STEMI
restore blood flow w PCI or fibrinolysis w/in 90 min of contact (or w/in 120 min if transport to capable hosp needed) – PCI better results
best tx for long term mortality in STEMI
restore blood flow w PCI or fibrinolysis w/in 90 min of contact (or w/in 120 min if transport to capable hosp needed) – PCI better results
T/F
in acute MI goal is reduce cardiac afterload
F
restore blood flow (PCI#1, fibriolysis) – nitrates reduce pain but no evidence of long term outcome improvement… BBs can reduce O2 demand but not recommended or proven good before PCI/fibrinolysis… can consider after if not brady already…. no goodness of prophylactic antiarrhythmics after MI…
secondary prevention in pt w known CAD
5
- DAPT: ASA + P2y12 blocker (clopidogrel, prasugrel, ticagrelor)
- BB
- ACEI/ARB
- statin
- Aldo antag (spironoloactone, eplerenon) if HFrEF +- DM
clopidogrel
prasugrel
ticagrelor
=
p2y12 inhibitors
antiplatelet
typical uses of apixaban
nonvalvular afib
VTE
(direct factor Xa inhibitor, anticoag)
isosorbide mononitrate long or short acting nitrate?
long acting
when to use colchicine in context of MI
when postinfarction pericarditis (rub, chest pain)
uses of DAPT
dual antiplatelet theray (ASA + P2Y12 inhib [clopidogrel, prasugrel, ticagrelor])
- nstemi - reduces recurrent MI
- anti stent thrombosis (give for 12 mos)
how long DAPT for prevention of coronary stent thrombosis
at least 12 mos
recommended in all drug-eluting stent pts
severe or resistent HTN HTN onset v age 35 sudden ^ BP ^ Cr .5-1 after ACEI or ARB wo BP reduction systolic epigastric bruit
50 yo F w any of above should be screened for __
fibromuscular dysplasia
-abnormal cell dev in arterial wall
(noninflammatory, nonatherosclerotic)
50 yo F w any 1 of these 5 characteristics should be screened for fibromuscular dysplasia
severe or resistent HTN HTN onset v age 35 sudden ^ BP ^ Cr .5-1 after ACEI or ARB wo BP reduction systolic epigastric bruit
fibromuscular dysplasia
pathogenesis & presentation
abnormal cell dev in arterial wall
(noninflammatory, nonatherosclerotic)
- resistant HTN (renal a stenosis)
- amaurosis fugax [fleeting darkness - painless transient vision loss uni or bi], horner’s, TIA, stroke (brain ischemia - carotid or vertebral a)
- non-specific HA, pulsatitle tinnitus, dizziness (also carotid or vertebral a)
amaurosis fugax =
fleeting darkness - painless transient vision loss uni or bi - e.g. from embolus, fibromuscular dysplasia
which arteries does FMD fibromuscular dysplasia usually affect
renal
carotid
vertebral
but can affect any
dx FMD
fibromuscular dysplasia
- CTA
- Duplex US
- cath-based digital subtraction arteriography if above noninvasive not diagnostic
aldo/renin activity ratio in FMD
~10 (v20) fibromuscular dysplasia (secondary hyperaldosteronism)
aldo/renin activity ratio in primary hyperaldosteronism
> 20
because primary aldo suppresses renin
e.g. adrenal hyperplasia, adenoma
how to diff between adrenal hyperplasia vs adenoma as cause of primary hyperaldosteronism
adrenal vein sampling
cushingoid findings
central obesity purple striae proximal muscle wasting glucose intolerance hypertension
1st test for GCA giant cell arteritis
ESR elevated
fever fatigue HA transient monocular vision loss jaw claudication =
presentation of GCA
giant cell arteritis
elevated plasma free metanephrines in this secondary cause of hypertension
pheochromocytoma
classic triad of
episodic headache, sweating, palpitations
w tachycardia =
presentation of pheochromocytoma
FMD fibromuscular dysplasia
classically presents in what demo
F age `15-50
low PCWP + high MvO2 =
septic shock
- low pulm cap wedge press (peripheral vasodilation
- high mixed venous O2 (less systemic vascular resistance, faster flows, inc cardiac output adds to effect, tissues pull out smaller proportion of O2)
go-to lab for differentiating CHF from other causes of dyspnea
proBNP
sns 90, sp 76, ppv 83
dressler syndrome
post MI pericarditis… usually 1-6 wks post MI
uremic pericarditis
pleuritic CP
pericardial friction rub
uremia
from ARF w uremia ^60
tx = dialysis
how to treat uremic pericarditis
dialysis
rapidly resolves chest pain and reduces size of pericardial effusion
how long after MI for dressler’s
1-6 wks
post-MI pericarditis
indications for pericardiocentesis
s&s of cardiac tamponade
-hypot, JVD, pulsus paradoxus
or diagnostic if pericardial effusion etiology unclear
ekg findings in uremic pericarditis
NOT classic pericarditis diffuse STEs
normal EKG i think…
this tx rapidly improves chest pain and decreases size of pericardial effusion in uremic pericarditis
dialysis
arrhythmia most specific for digitalis tox
a tach w AV block
- inc ectopy in atria or ventricles - a tach
- inc vagal stim - av block
diff a tach vs a flut
a tach 150-250 bpm
a flut 250-350 bpm
which is faster, a tach or a flut
a flut
a tach 150-250 bpm
a flut 250-350 bpm
a tach w av block most specific for this drug toxicity
digoxin
- inc ectopy in atria or ventricles - a tach
- inc vagal stim - av block
digoxin MOA
blocks KKNaNaNa ATPase in intra Na dec exchange w Ca++ inc intra Ca++ inc contractility (positive inotropy)
also stim vagus (negative chronotropy)
t/f
digoxin tox causes atrial flutter
false a tach (ectopy) av block (vagus stim)
t/f
digoxin tox causes a fib
false a tach (ectopy) av block (vagus stim)