Therapeutics of Coronary Artery Disease Flashcards
(129 cards)
pathophysiology and diagnosis of a STEMI
- Total Occlusion of Coronary Artery -> Unstable plaque causing infarction
- EKG Manifestations: ST segment elevation, NEW left bundle branch block (LBBB)
- Signs/Symptoms: Chest pain, Intense sweating, N/V
- Presence of biomarkers
patients who are candidates for PCI
- First medical contact device time ≤ 90
- Superior to fibrinolytic therapy if availability of skilled interventional cardiology department
- High Risk of Mortality: Cardiogenic shock or severe HF must get PCI right away
- High Bleed risk
- Diagnosis of STEMI in doubt
patients who are candidates for Fibrinolytics
- Administer within 30 min of arrival if first medical contact device time > 120 min
- More appropriate option in institutions with lack of availability of skilled interventional cardiology department
- Low bleed risk
pharmacotherapeutics for PCI
- antiplatelet
- anticoagulation
What are the antiplatelets for PCI?
- ASA (if not already given)
- P2Y12 receptor inhibitor
- GP IIb/IIIa Inhibitors
P2Y12 receptor inhibitors for PCI
- Clopidogrel
- Prasugrel
- Ticagrelor
- Cangrelor
Clopidogrel dose for PCI
600 mg LD
Prasugrel dose for PCI
60 mg
Ticagrelor dose for PCI
180 mg
Cangrelor dose for PCI
30 mcg/kg IV bolus prior to PCI followed immediately by an infusion of 4 mcg/kg/minute continued for at least 2 hours or for the duration of the PCI
What are the anticoag therapies for PCI?
- UFH
- Enoxaparin
- Fondaparinux
- Argatroban
- Bivalirudin
UFH dose for PCI and Fibrinolysis
- After PCI, a weight-adjusted, continuous, IV infusion is administed for 48 hours or until revascularization
- 12 U/kg/hour (maximum 1000 U/hour)
- aPTT of 1.5 to 2.0 times control
- Drug of choice when renal function is unknown
Enoxaparin dose for PCI and Fibrinolysis
- IV bolus, followed in 15 minutes by SQ injection for the duration of hospitalization, up to 8 days or until revascularization
- If age < 75 years: 30-mg IV bolus, followed in 15 min by 1 mg/kg SQ every 12 hours (maximum 100 mg for the first 2 doses)
- If age ≥ 75 years: no bolus, 0.75 mg/kg SQ every 12 hours (maximum 75 mg for the first 2 doses)
- Regardless of age, if CrCl < 30 mL/min: 1 mg/kg SQ every 24 hours
- Consider using this in pts who has history of HITT
Fondaparinux dose for PCI and Fibrinolysis
- NOT recommended as sole anticoagulant for PCI
- Increased risk of catheter thrombosis when used as monotherapy
- Contraindicated in patients with CrCl < 30 mL/min
- Consider using this in pts who has history of HITT
Argatroban use for PCI and Fibrinolysis
- Useful when anticoagulation needs to be extended past PCI
- Dose adjust in hepatic dysfunction
- Useful option in patients with renal dysfunction
Bivalirudin dose for PCI and Fibrinolysis
- Monotherapy anticoagulation in preference to the combination of UFH and a GP IIb/IIIa receptor antagonist
- Monotherapy anticoagulation
- 0.75-mg/kg IV bolus, then 1.75–mg/kg/hour IV infusion
- if CrCl < 30 ml/min = 1 mg/kg/hour
- Consider using this in pts who has history of HITT
When to use Glycoprotein IIb/IIIa Receptor Antagonists in PCI?
- begin treatment with an IV GP IIb/IIIa receptor antagonist at the time of primary PCI in selected patients with STEMI who are receiving unfractionated heparin (UFH)
- Used in special cases: Thrombectomy, High-troponin, Complex lesions, Large thrombi, “Bail-out” Therapy
What are the Glycoprotein IIb/IIIa Receptor Antagonists for PCI?
- Abciximab
- Tirofiban
- Eptifibatide
Abciximab dose for PCI
0.25 mg/kg IV bolus, then 0.125 mcg/kg/min (maximum 10 mcg/min) x 12 hours
Tirofiban dose for PCI
- 25 mcg/kg IV bolus, then 0.15 mcg/kg/min x 18-24 hours
- In patients with CrCl ≤ 60 mL/min, reduce maintenance dose by 50% x 18 hours
- Contraindicated in patients on hemodialysis
Eptifibatide dose for PCI
- 180 mcg/kg IV bolus [max: 22.6 mg] (repeat 10 minutes later), then 2 mcg/kg/min (max: 15 mg/hour) x 18-24 hours
- n patients with CrCl < 50 mL/min, reduce maintenance dose by 50%
- Contraindicated in patients on hemodialysis
Therapy for fibrinolysis
- fibrinolytics
- antiplatelets
- anticoags
fibrinolytics
- Alteplase
- Reteplase
- Tenecteplase
What are the antiplatelet therapies for PCI?
- ASA
- P2Y12 Receptor Antagonist