Acute Coronary Syndrome lec Flashcards
class:
Indications:
MOA:
Dosage forms:
Dosing:
Max dose:
Contraindications:
Warnings:
Side Effects:
Monitoring:
Pearls/Notes:
Drug-Drug/Food interactions:
Class:
Indications:
Dosing:
MOA:
Contraindications:
Warnings:
Side effects:
Monitoring:
Note/Pearls:
Drug-Drug Interactions:
Oxygen supply and Oxygen Demand are not balanced
What is an Acute Coronary Syndrome?
It is a global term that encompasses:
- Non-ST segment elevation ACS
- Unstable Angina
- Non-ST segment MI (NSTEMI)
- ST segment elevation MI (STEMI)
What are the signs and symptoms of Acute Coronary Syndrome?
- *chest pain
- dyspnea “shortness of breath”
- syncope or lightheadedness
- diaphoresis “sweating”
How do we diagnosis an ACS?
with an electrocardiogram (ECG)
also looking at cardiac enzymes
With Unstable Angina (UA)
Cardiac enzymes-
ECG Changes-
Blockage-
Cardiac enzymes- (negative)
ECG Changes- None or Transient = P-QRS-T - ST depression
Blockage- partial blockage
With Non-ST segment elevation Myocardial Infarction (NSTEMI)
Cardiac enzymes-
ECG Changes-
Blockage-
Cardiac enzymes- (positive)
ECG Changes: None or Transient = P-QRS-T - ST depression
Blockage- partial blockage
With ST-segment elevation Myocardial Infarction (STEMI)
Cardiac enzymes-
ECG Changes-
Blockage-
Cardiac enzymes- (positive)
ECG Changes- ST elevation
Blockage- complete blockage of a coronary artery
If someone is thought to be having an Acute Coronary Syndrome, the guidelines recommend we get an _____________
12-lead electrocardiogram within 10 minutes of their first medical contact
What enzymes are most sensitive/specific towards ACS?
Troponins (Troponin I and Troponin T)
- these are detectable within 2-12 hours of an ACS and stay elevated for out to 2 weeks. (so they elevate quickly and stay elevated for a while)
Drug Treatment:
May involve medications alone (medical management)
or
Medications + (PCI) percutaneous coronary intervention
What medications will we use in a patient with ACS?
remember MONA-GAP-BA
Morphine GPIIb/IIIa antagonists Beta blockers
Oxygen Anticoagulants ACE inhibitors
Nitrates P2Y12 inhibitors
Aspirin
MONA- these are usually started right away
GAP - these agents will be determined depending if patient is going for a PCI or not
BA - within the first 24 hours we want to consider
What is the treatment for someone with NSTE-ACS?
**remember NSTE-ACS encompasses _____________
MONA-GAP-BA +/- PCI
(UA) Unstable Angina & NSTEMI
what is the treatment for someone with STEMI?
MONA-GAP-BA + PCI or fibrinolytic
PCI preferred
When should the MONA drugs be given in someone having an ACS?
What is the clinical benefit of each?
What other additional information should be known for each?
M- Morphine provides pain relief and helps anxiety.
Not for routine use; reserve for patients with unacceptable chest discomfort. Dose 2-5mg IV repeated at 5-to-30-minute intervals PRN. Monitor for hypotension, bradycardia, N/V, sedation and respiratory depression.
O- oxygen administer to patients with arterial oxygen saturation < 90% or respiratory distress
N- Nitrates: will dilate the coronary arteries, improve collateral blood flow and decrease preload/myocardial oxygen demand and afterload modestly. Also reducing chest pain. May consider IV infusion if patient is not improving.
A- Aspirin stops platelets from aggregating around atherosclerotic plaque. we want patient to chew a non-enteric coated aspirin. A couple baby aspirin or a 325mg chewable aspirin at the sign of chest pain.
Then a maintenance dose of aspirin 81-162mg daily continued indefinitely
DO NOT USE extended-release aspirin products. We want aspirin in blood stream fast!
When would we NOT consider IV nitroglycerin in someone with ACS?
if SBP is < 90mmHg, HR < 50bpm or patient
Contraindicated with PDE-5 inhibitors.
When should the GAP drugs be given in someone having an ACS?
What is the clinical benefit of each?
What other additional information should be known for each?
Choice of these drugs will be given as it relates to the plan/needs of the patient
G- GPIIb/IIIa receptor antagonists
-are for patient going for PCI or being medically managed. If used, then are used along with an anticoagulant.
- they block fibrinogen from binding to GPIIb/IIIa receptor that is on platelets. similar to aspirin in that they affect platelet aggregation.
A-Anticoagulants
- the agents here are the LMWH (enoxaparin) and UFH and bivalirudin
(preferred in STEMI)
- inhibit clotting factors and can reduce infarct size
P- P2Y12 inhibitors
- agents include clopidogrel/prasugrel/ticagrelor
-these inhibit the P2Y12 receptor also on platelets, which is another way of affecting platelet aggregation.