CAD/ACS Flashcards
_________ is the outward symptom of ischemia
angina
What is PQRST?
P - precipitating factors/palliative measures
Q - quality and quantity of pain
R - region and radiation
S - severity of pain
T - timing and temporal pattern
What does patient have to take before elective PCI procedure?
ASA
P2Y12 inhibitor loading dose (i.e. Plavix 300mg)
What does patient take after elective PCI procedure and for how long? (LOW RISK OF BLEEDING)
DAPT: minimum 6 months
SAPT: indefinitely
What does patient take after elective PCI procedure and for how long? (HIGH RISK OF BLEEDING)
DAPT: 1-3 months (ASA, Plavix)
SAPT: P2Y12i until 12 months (Plavix)
SAPT: indefinitely (ASA)
Nitrates cause ____________ which decreases _________
venodilation, preload
(dilate veins (before heart) less blood flow to heart)
Two EKG findings during NSTEMI
-ST depression
-T wave inversion
Troponin is released from ________ _________
necrotic myocytes
Higher sensitivity troponin > __________ is considered abnormal
> 14 ng/L
Conventional troponin > __________ is considered abnormal
> 0.05 ng/mL
UA and NSTEMI will often be treated the same way, although UA does not lead to detectable levels of _____________
troponin
___________ remodeling may occur after an ACS
ventricular
What factors are involved with ventricular remodeling? (2)
- activation of RAAS
- hemodynamic factors (increase in preload and afterload)
Ventricular remodeling can lead to what?
Heart failure
What does MACE usually include?
Stroke
MI
Cardiovascular death
Precipitating factors of an ACS
- Recent exercise
- Extreme weather - hot or cold
- Large meal
- Fright/anger
- Sex
- Walking against wind
- Smoking
Define ACS
acute myocardial ischemia resulting from an imbalance between oxygen demand + supply
Reperfusion strategies for UA/NSTEMI
Early invasive strategy vs ischemia-guided strategy
(no fibrinolytic)
Reperfusion strategies for STEMI
PCI or fibrinolytics
Patients must receive what four things immediately upon arrival to the hospital (for ACS)?
M: Morphine
O: Oxygen
N: Nitroglycerin
A: Aspirin
What is the initial dose of morphine upon arriving to the hospital?
4-8mg IV, followed by 2-8mg q5-15 mins
Maintain an O2 saturation > _______% upon arriving to the hospital
> 90%
SL NTG dose upon arriving to the hospital
0.3-0.4mg q5min x 3
IV NTG dose upon arriving to the hospital
10 mcg/min, then titrate by 5mcg/min q5min
(max: 200mcg/min)
What formulation of NTG is not recommended for ACS due to a slower onset of action?
Transdermal
Tolerance to nitrates develops after > _______ hours of continuous use
> 24 hours
nitrates should not be taken within 24 hours of taking which PDE inhibitors?
sildenafil
vardenafil
nitrates should not be taken within 48 hours of taking which PDE inhibitor?
tadalafil
aspirin dose upon arriving to the hospital
162-325mg chewable aspirin (1 dose)
*given to all patients w/o contraindications ASAP
What is coronary angiography?
A heart catheter that shows which arteries in the heart have blockages
Fibrinolytics mechanism of action
Convert plasminogen to plasmin, which breaks down fibrin (fibrin holds clot together)
Which fibrinolytic is weight-based?
Tenecteplase
If fibrinolytic therapy is preferred for a STEMI patient, what is the “door-to-needle” time?
within 30 mins of hospital arrival
If PCI is preferred for a STEMI patient, what is the “door-to-balloon” time?
within 90 mins of hospital arrival
For NSTEMI/UA patients, what does ischemic-guided reperfusion therapy mean?
treatment with medications
no heart-catheterization
For NSTEMI/UA patients, what does early invasive reperfusion therapy mean?
coronary angiography +/- revascularization
(preferred for high-risk patients)
Metoprolol and carvedilol are __________ metabolized
Hepatically
Metoprolol and atenolol are dosed _______ daily
once
Antiplatelet therapy durations after CABG
DAPT - 12 months
SAPT - indefinitely
Antiplatelet therapy durations post-ACS
DAPT - 12 months
SAPT - indefinitely
prasugrel loading and maintenance dosing
LD: 60 mg
MD: 10 mg
ticagrelor loading and maintenance dosing
LD: 180 mg
MD: 90 mg BID
Prasugrel is contraindicated in patients with a previous __________
stroke
Aspirin dose must be < _________ mg when taken with ticagrelor
< 100mg