Pharmacotherapy of ACS Flashcards
Signs/Symptoms
Chest, arm, jaw/neck, or epigastric discomfort with exertion or at rest
Atypical Signs/Symptoms
SOB, jaw and back pain, nausea, dizziness, “cold sweat”, n/v, anorexia, hypotension, crackles
Women Signs/Symptoms
SOB, jaw/back pain, nausea
Diabetics Signs/Symptoms
May be reduced due to autonomic neuropathy (HR/BP may not increase)
Elderly Signs/Symptoms
Altered mental status
Which of the following agents used in the management of ACS may decrease MORTALITY?
Aspirin
Early Hospital/ ER based Pharmacotherapy MONA
Morphine
Oxygen
Nitrate
Aspirin
Aspirin
High dose 325
Will decrease mortality
Oxygen
Maintain O2 saturation of 90% or greater
- Oxidative damage to ischemic tissues
Chest pain
SL NTG
Morphine
IV NTG
Morphine dose
2-5 mg IV q5minutes PRN chest pain not relieved by SL NTG
Morphine causes
analgesia
vasodilation
decreased sympathetic tone (slows tachycardic HR)
Morphine hold
Histamine release –> itching
Sedation, hypOTN
IV NTG hold for
HypOTN, tachycardia, bradycardia, arrhythmia
Do not immediately discontinue, must titrate down
Early BB use:
NOT if they seem to have acute heart failure (PE, low BP)
Low-Medium Risk NSTEMI
No troponin increase
EKG changes: None, nonspecific, ST depression, T-wave inversion
High Risk NSTEMI
Yes troponin increase
EKG changes: None, nonspecific, ST depression, T-wave inversion
STEMI
Yes Troponin increase
EKG: ST elevation
ROMI Cardiac Enzyme Panel
Every 3-6 hours 2-3 times
STEMI Management
Percutaneous coronary intervention (angioplasty/stenting) or fibrinolysis
Goal of STEMI management
Restore complete blood flow to occluded artery within 90 minutes of arriving at hospital
Symptoms less than 12 hours
Significant improvement with treatment
Symptoms 12-24 hours
Might improve with treatment
Symptoms greater than 24 hours
Unlikely to prove beneficial and tissue cannot be salvaged
PCI Goal
Within 90 minutes of medical contact
Fibrinolysis Goal
Within 30 minutes of arrival at hospital
- Not as successful as PCI
NSTEMI –>
Risk stratification ot identify high risk patients vs medium or low risk
NSTEMI Goal
ID an appropriate management of high and moderate risk patient to minimize loss of myocardium
Risk Stratification is based on
GRACE score greater than 140
Elevated troponin (tissue death)
ST depression
High Risk Patients
Go to Cath lab within 24 hours
Medium Risk Patients
Go to cath lab in 1-3 days
Low Risk Patients
Further diagnostics (exercise stress test) Don't think they are having a heart attack but lets make sure
Medical management + Patients
Some patients don’t want to go to cath lab so they just start standard anti-thrombotics and secondary preventative measures
MONA-PA
Morphine Oxygen Nitrate Aspirin P2Y12 Inhibitor Anti-coagulant - So one of the first 4 + PA
Cath Lab Required Therapy
Potent anti-thrombotic bc you are going in angainst week vessel walls and poking/breaking up a clot (make it angry)
Fibrinolysis complications
If there is any place in your body that you were going to bleed, it will hemorrhage so you keep pt on anti-thrombotic but back off on other therapies
Antiplatelet Agents
Aspirin
P2Y12 inhibitors
2b3ai’s
Anticoagulant agents
Heparin
Direct Thrombin inhibitors
Factor Xa inhibitors
Fibrinolytic agents
Ateplase
Reteplase
Tenecteplase
Those undergoing fibrinolysis (STEMI) are at
high risk of bleeding so use less potent agents
Clopidogrel Adverse Reactions
TTP
When is clopidogrel used?
Med mgmt
NSTEMI PCI
STEMI PCI
SETMI Fibrinolysis
Dosing of Clopidogrel
300 mg PO x 1 (loading) or 600 mg PO x 1 if PCI
75 mg PO daily (maint)
When would you not give a loading dose?
> 75 years old
CABG + Clopidogrel
hold for 5 days for CABG
Prasugrel CI
History of stroke/TIA
Prasugrel uses
NSTEMI PCI and STEMI PCI ONLY
Prasegrel Dosing
60 mg POx1 (loading)
10 mg PO daily (maint)
DO NOT administer until planning on stent placement
Prasugrel + CABG
Hold for 7 days for CABG
Ticagrelor AE
Dyspnea Ventricular pauses (don't give in bradycardia pts)
Ticagrelor one up =
Reversible!!!
Ticagrelor use
Med mgmt
NSTEMI PCI
STEMI PCI
Ticagrelor dosing
180 mg PO X1 (loading)
90 mg PO BID (maint)
Ticagrelor + CABG
Hold for 3-5 days for CABG
Abciximab (Reopro) Dosing and renal adjustment
For up to 12 hours
None
Abciximab AE
Thrombocytopenia
CI for 2b3ai
Active bleed, prior stroke (2 years), thrombocytopenia, recent surgery or trauma (6 mths), severy HTN, intracranial tumor or aneurysm
Tirofiban (Aggrastat) Dosing and Renal adjustment
For up to 18-24 hours
Decreased infusion 50% for CrCl <60
Eptifibatide (Intergillin) Dosing and Renal adjustment
For up to 18-24 hours
Decreased infusion 50% for CrCl < 50
Abciximab vsTirofiban and Eptifibatide
A: doesn’t need activated platelets
T&E: activated platelets required
Gp2b3ai are not used with:
Bivalirudin (angiomax)
Heparin and Enoxaparin CI
Active bleed, bleed risk, HIT, stroke
Heparin Enoxaparin AE
Bleeding and HIT
Heparin dosing
60 u/kg IV bolus
12 u/kg/hr IV maint
This is for med mgmt, PCI and fibronlysis
Enoxaparin dosing
Med mgmt and NSTEMI PCI: 1 mg/kg SC q12h with IV bolus if going for PCI
Enoxaparin Renal adjustment
For CrCl less than 30, give q24h
Avoid if CrCl less than 15
Fondaparinux (Arixtra) class and CI
Factor Xa inhibitor
Active bleed or bleed risk
Fondaparinux dosing
Med, NSTEMI PCI, STEMI PCI: 2.5 mg SQ daily, add UFH IV if going PCI
Fibronlysis: 2.5 mg IV x1 then 2.5 mg SQ daily
Fondaparinux renal adjustment
Caution in CrCl less than 50
Avoid if less than 30
Bivalirudin (angiomax) class and CI
Direct thrombin (factor 2) inhibitor Active bleed and risk of bleed
Bivalirudin dosing
Avoid in Med mgmt and fibronylsis bc of cost
Used in PCI but no dose
Bivalirudin renal adjustment
CrCl less than 30, decrease dose
Dialysis, even lower
Bivalirudin doesn’t require
Gp2b3ais
HIT
Activation of platelets leads to increased risk of blood clot in the legs and lungs despite thrombocytopenia
Fibrinolytics Drugs
Alteplase (Activase)
Reteplase (Retavase)
Tenecteplase (TNKase)
Dosing Alteplase
1 bolus + continuous infusion
Dosing Reteplase
2 bolus
Dosing Tenecteplase
1 bolus
Fibrinolytics should be combined with
ASA high dose in ER
Clopidogrel 300 mg LD
Anticoagulants (heparin, enoxaparin, fondaparinux)
Secondary Prevention of ACS HTN/Prevent HF
BB within 24 hrs for pts with cardiogeneic shock/AHF
ACEi/ARBs (Within 24 hrs but not IV)
Aldosterone antagonists (LVEF less than 40% + DM OR LVEF less than 40% + HF symptoms)
Aldosterone antagonists
Within first week after MI
Hold for CrCl less than 30 or potassium > 5
Secondary Prevention of ACS Dyslipidemia
High dose statins initiated before discharge (plaque stabilizing via pleiotropic effects)
Secondary Prevention of ACS Lifestyle
Obesity
Diet
Alcohol
Exercise (rehab)
Dual Antiplatelet Therapy (DAPT)
Stent: 1 year
Fibrinolysis or med mgmt: 12 months
No PCI/stenting
Aspirin
P2Y12 Inhibitor for at least 1 month up to 12 months
Stenting
Aspirin
P2Y12 inhibitor for at least 12 months
Prevention of GI bleed with DAPT
Addition of acid-suppression
Use a PPI if patient is at increased risk of GI bleed if:
History of GI bleed or chronic anticoagulant
Advanced age, steroids, or NSAID use
Triple anti-thrombotic therapy for ACS and Afib
ASA + P2Y12 inhibitor + anticoagulate
- Target warfarin is 2-2.5 INR, ASA no greater than 81 mg