Oral Anticoagulants Made Easy: Warfarin, Rivaroxaban & Dabigatran | Pharmacology | Dr. Priyanka

Master Oral Anticoagulants in this high-yield pharmacology masterclass with Dr. Priyanka Sachdev! Learn the exact classification, mechanisms of action, dose monitoring (PT/INR vs aPTT), adverse effects, and direct oral anticoagulants (DOACs/NOACs) compared to traditional Warfarin. 📖 Key Topics Covered in this Lecture: • Classification of Anticoagulants (Parenteral vs. Oral) • Mechanism of Action of Warfarin (VKOR Inhibition & Vitamin K Cycle) • Why Warfarin causes initial transient hypercoagulation & skin necrosis • Why Warfarin acts in vivo only and requires PT/INR monitoring • Direct Factor Xa Inhibitors (Rivaroxaban) & Direct Thrombin Inhibitors (Dabigatran) • High-Yield comparative master chart for MBBS 2nd Prof, NEET PG, FMGE & USMLE ⏱️ Chapter Timestamps: [00:00] – Introduction to Anticoagulants & Coagulation Cascade Review [01:31] – Complete Classification: Parenteral vs. Oral Anticoagulants [07:42] – Overview of Oral Anticoagulants (Coumarins, Factor Xa & IIa Inhibitors) [10:45] – Coumarin Derivatives: Warfarin, Prototype & Derivatives [11:55] – Mechanism of Action of Warfarin (VKORC1 & Vitamin K Epoxide Reductase) [16:58] – Paradoxical Hypercoagulation & Protein C / S Depletion [20:33] – Why Warfarin works In Vivo only and not In Vitro [22:09] – Onset of Action: Why Warfarin needs 1–3 Days for Anticoagulation [24:00] – Sequence of Clotting Factor Depletion & PT/INR Monitoring [26:50] – Target INR Guidelines (DVT Prophylaxis, Treatment & Recurrence) [31:26] – Clinical Indications & Bridging Therapy with Heparin [33:19] – Adverse Effects (Bleeding, Alopecia, Warfarin-Induced Skin Necrosis) [35:19] – Management of Warfarin Overdose (Fresh Frozen Plasma & Vitamin K1) [37:37] – Contraindications & Fetal Warfarin Syndrome in Pregnancy [39:25] – Direct Factor Xa Inhibitor: Rivaroxaban (Mechanism, Mnemonic & Advantages) [41:32] – Direct Factor IIa (Thrombin) Inhibitor: Dabigatran Etexilate [42:36] – Oral Anticoagulants Comparative Master Chart Summary 📥 Download Hand-written Master Charts & Notes: [Insert Link to MedLive App / Website Notes] 🔔 Subscribe to MedLive by Dr. Priyanka for integrated MBBS 2nd Prof & NEET PG revision lectures!