19/03/2026
🫀 What is CABG?
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CABG (Coronary Artery Bypass Grafting) is a surgery used to improve blood flow to the heart by bypassing blocked coronary arteries using a graft (vein or artery).
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🧠 Indications (WHY it’s done)
• Severe coronary artery disease (CAD)
• Left main coronary artery blockage
• Failed stent/angioplasty
• Persistent angina not relieved by meds
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🔪 Graft Sites (NCLEX favorite)
• Saphenous vein (leg)
• Internal mammary artery (best long-term patency)
• Radial artery
👉 NCLEX tip:
If leg vein used → assess leg + heart
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⚠️ Pre-Op Nursing Care
• Informed consent ✔️
• Baseline vitals, ECG
• Stop anticoagulants as ordered
• Teach:
• Incentive spirometer
• Coughing & deep breathing
• Splinting chest with pillow
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🏥 Post-Op PRIORITIES (VERY HIGH-YIELD)
1. ❤️ Cardiac Monitoring
• Continuous ECG
• Watch for dysrhythmias (most common: atrial fibrillation)
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2. 🫁 Respiratory Care
• Early extubation (within hours)
• Incentive spirometer EVERY 1–2 hrs
• Prevent atelectasis & pneumonia
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3. 💉 Chest Tubes
• Drain blood/fluid from mediastinum
🚨 Report if:
• Sudden ↑ drainage (>100 mL/hr)
• Bright red blood
• Tube stops draining suddenly
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4. 🩸 Hemodynamic Stability
• Monitor:
• BP
• Cardiac output
• Urine output (>30 mL/hr)
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5. 🦵 Graft Site Care (LEG)
If saphenous vein used:
• Elevate leg
• No crossing legs
• Wear compression stockings
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🚨 COMPLICATIONS (TESTED A LOT)
❗ Early Complications
• Bleeding
• Cardiac tamponade (↓ BP, JVD, muffled heart sounds)
• Dysrhythmias (AFib)
• Hypothermia
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❗ Later Complications
• Infection (sternal wound)
• Graft occlusion
• Pulmonary embolism
• Stroke
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🛑 Sternal Precautions (VERY IMPORTANT)
For 6–8 weeks:
• ❌ No pushing/pulling
• ❌ No lifting >5–10 lbs
• ❌ No driving
• ✔️ Hug pillow when coughing
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💊 Medications After CABG
• Antiplatelets (e.g., aspirin)
• Beta-blockers
• Statins
• Pain control
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🧠 NCLEX TRICKS
• Most important priority post-op → airway & hemodynamic stability
• Leg swelling after graft? → elevate, NOT emergency unless severe
• Chest pain post-CABG? → report immediately (possible graft failure)
• Decreased urine output → think LOW CARDIAC OUTPUT
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⭐ One-Line Memory Trick:
👉 “CABG = Fix heart flow, protect lungs, watch bleeding, prevent clots”