Left Ventricular Aneurysm Repair

Left Ventricular (LV) Aneurysm Repair

Left Ventricular (LV) Aneurysm Repair, often called an "Aneurysmectomy" or the "Dor Procedure," is a major surgical operation to correct a "bulge" in the heart's main pumping chamber. This bulge is typically a patch of thin, scarred, non-functioning muscle that forms after a massive heart attack. The focus of this surgery is "Ventricular Restoration"—reshaping the heart from a balloon-like state back into its natural, efficient oval shape to restore pumping power.

When You Should Consider LV Aneurysm Repair

• Congestive Heart Failure: When the scarred area "balloons" outward, wasting the heart's energy and causing severe breathlessness and fatigue.

• Recurrent Blood Clots: When blood pools and stagnates inside the bulge, creating clots that carry a high risk of stroke.

• Refractory Arrhythmias: Life-threatening fast heartbeats (Ventricular Tachycardia) triggered by the border between healthy muscle and scar tissue.

• Large Aneurysm Size: Even if symptoms are mild, a very large or expanding aneurysm may require repair to prevent progressive heart stretching.

• Concomitant Surgery: Often performed if you already need a heart bypass (CABG) or mitral valve repair to fully restore heart efficiency.

Surgical Techniques

• Linear Repair: For smaller aneurysms, the surgeon removes the scarred tissue and sews the healthy muscle edges back together.

• The Dor Procedure (Endoventricular Circular Patch Plasty): The modern "gold standard" where a synthetic or tissue patch is placed inside the ventricle to rebuild its internal structure.

• Hybrid LV Restoration: A 2026 approach combining surgical repair with catheter-based techniques for patients who are too high-risk for traditional surgery.

• Extracellular Matrix (ECM) Patches: A newer option using biological "scaffolding" that may help the heart tissue integrate better than traditional synthetic materials.

• Ventricular Reconstruction: Using internal sutures to "exclude" the dead tissue from the pumping chamber without actually cutting it out.

[Image showing a synthetic patch being sutured inside the left ventricle during a Dor Procedure]

How LV Aneurysm Repair Is Performed

• Access: A midline incision is made through the breastbone (sternotomy) to reach the heart.

• Bypass: The patient is connected to a heart-lung machine; the heart is stopped to allow the surgeon to safely open the ventricle.

• Clot Removal: Any old blood clots (thrombi) trapped within the aneurysm are carefully removed to prevent future strokes.

• Reshaping: The surgeon identifies the "border zone" of healthy muscle and secures the patch or sutures to create a new, smaller, and stronger pumping chamber.

• Verification: An intraoperative ultrasound (TEE) is performed to ensure the heart's "Stroke Volume" (the amount of blood pumped per beat) has significantly improved.

Pre-Procedure Preparation

• Fasting for at least 8–12 hours before the surgery, which is performed under general anesthesia.

• Extensive blood work, including kidney function tests and cross-matching for potential blood transfusions.

• Dental clearance to eliminate any hidden infections that could compromise the surgical site or the patch.

• Adjusting medications, specifically heart failure drugs like ACE inhibitors and blood thinners, as directed by the surgeon.

• Review of a "Viability Study" to confirm that the remaining heart muscle is strong enough to support the repair.

Tests Before LV Aneurysm Repair

• Cardiac MRI: The best tool for mapping the exact size of the aneurysm and distinguishing between scar tissue and healthy muscle.

• Echocardiogram (TEE): To measure the Ejection Fraction and check if the mitral valve is leaking due to the aneurysm.

• Coronary Angiogram: To identify blockages in the arteries that will likely be bypassed during the same operation.

• Cardiac CT Scan: To assess the proximity of the aneurysm to the chest wall, especially important for "redo" surgeries.

• EP Study (Electrophysiology): Occasionally done if the patient has had life-threatening arrhythmias to locate the "trigger" points.

Life After LV Aneurysm Repair

• ICU Stay: Usually 2 to 3 days for intensive monitoring of blood pressure, heart rhythm, and fluid levels.

• Hospital Stay: Total stay typically ranges from 7 to 12 days, depending on the speed of recovery.

• Mechanical Support: Some patients may briefly require a temporary pump (like an IABP) to help the reshaped heart work in the first 48 hours.

• Sternal Precautions: No lifting anything heavier than 3 kg for 8 to 12 weeks to ensure the breastbone heals.

• Long-term Meds: Lifelong use of beta-blockers and blood thinners is often necessary to protect the repair and prevent new clots.

Benefits of LV Aneurysm Repair

• Improved Pumping Efficiency: Reshaping the heart significantly increases the Ejection Fraction and overall cardiac output.

• Dramatic Symptom Relief: Most patients report a major decrease in shortness of breath and a return of energy within 4–8 weeks.

• Reduced Stroke Risk: By removing the "pocket" where blood stagnates, the primary source of heart-related strokes is eliminated.

• Rhythm Stability: Repairing the "border zone" often resolves or simplifies the management of dangerous heart arrhythmias.

• 2026 Success Rates: In specialized Indian centers, the success rate for the Dor Procedure is approximately 90–95% for elective cases.