Quintuple Coronary Artery Bypass Grafting (CABG×5): Procedure, Grafts, and Recovery

Indications

Severe multivessel coronary artery disease (CAD) involving five major epicardial vessels or major branches with:

• Left main disease + multivessel involvement.
• Three-vessel disease with proximal LAD + diabetes or reduced LV function.
• Failed PCI/stenting of multiple lesions; unsuitable anatomy for PCI.
• Ischemia on noninvasive testing involving multiple territories.

Heart Team (cardiologist + cardiac surgeon) consensus required per guidelines.

Graft Selection and Harvest

Goal: Maximum arterial grafting (LIMA + RIMA + radial) for durability; SVG for remaining targets.

Operative Sequence (On-Pump Beating Heart or Arrested)

1. Median sternotomy; heparinization; CPB initiation (aortic/bicaval cannulation).
2. Cardioplegia arrest (cold blood) or beating-heart with stabilizers.
3. Graft harvest (concurrent or sequential).
4. Proximal anastomoses: SVG to aorta (partial clamp or Heartstring device); arterial grafts in situ or to aorta.
5. Distal anastomoses: sequential or individual; microscopic technique.
6. De-airing; wean CPB; protamine reversal.
7. Hemostasis; chest tube placement; sternal closure (wires/plates); skin closure.

Postoperative Course

Graft	Source	Typical Targets	Patency (10-yr)
Left Internal Mammary Artery (LIMA)	In situ (left chest wall)	LAD (gold standard)	>90%
Right Internal Mammary Artery (RIMA)	In situ or free	Circumflex system (OM, LCx)	85–90%
Radial Artery	Forearm (Allen's test +)	Circumflex, RCA branches	80–88%
Saphenous Vein Graft (SVG)	Leg (endoscopic harvest)	RCA, PDA, PLB, diagonal, OM	50–60% (improved with "no-touch")
Right Gastroepiploic / Inferior Epigastric	Abdomen	RCA, PDA (alternative)	70–80%

Phase	Timeline	Key Elements
ICU	24–72h	Hemodynamic optimization, vent weaning, insulin protocol, bleeding monitoring, pacing wires
Step-down / Telemetry	POD 2–5	Mobilization, chest tube removal, oral meds transition, education
Discharge	POD 5–8 (uncomplicated)	Independent ambulation, PO intake, pain controlled on orals, follow-up arranged
Cardiac Rehab	Weeks 2–12	Supervised exercise, risk factor modification, psychosocial support

Long-Term Outcomes

• Survival: 10-year ≈ 75–85% (age/comorbidity adjusted).
• Freedom from reintervention: 85–90% at 10 years (arterial grafts).
• Quality of life: Significant improvement in angina class, exercise capacity.
• Secondary prevention critical: DAPT → aspirin, high-intensity statin, ACEi/ARB, beta-blocker, SGLT2i, lifestyle.

Key Determinants of Success

• Surgeon/institutional volume (>200 CABG/yr, >50 CABG×5/yr).
• Complete revascularization (all viable territories).
• Arterial graft utilization (LIMA mandatory; RIMA/radial when feasible).
• Meticulous technique: no-touch harvest, intraoperative flow measurement, graft patency verification.

CABG×5 is a high-complexity, high-reward procedure for advanced CAD. Patient selection, surgical expertise, and lifelong medical therapy determine durability.