For decades, any major repair to the heart required a "median sternotomy"—the surgical splitting of the breastbone (sternum). While effective, this "open-heart" approach is physically traumatic, requiring months for the bone to heal. Minimally Invasive Cardiac Surgery (MICS) represents a paradigm shift. By utilizing advanced video technology, specialized long-handled instruments, and sometimes robotic assistance, surgeons can now perform complex heart repairs through small incisions between the ribs. This "keyhole" approach offers a way to fix the heart's internal mechanics without the massive structural trauma to the chest wall.
1. What is it? Any common name for this procedure?
Minimally Invasive Cardiac Surgery (MICS) refers to a variety of heart operations performed through small, localized incisions (typically 3 to 5 cm) rather than the traditional 8-to-10-inch incision used in open-heart surgery. In MICS, the surgeon accesses the heart through the spaces between the ribs (thoracotomy) or via a partial sternotomy (opening only a small portion of the breastbone). These procedures often utilize high-definition cameras (thoracoscopes) to provide a magnified view of the heart's internal structures on a monitor.
Common Names: Keyhole Heart Surgery, Mini-Sternotomy, Robotic-Assisted Heart Surgery, MICS CABG, and Thoracoscopic Surgery.
2. Common Symptoms at which one must meet the doctor
Patients considered for MICS often present with symptoms related to structural or electrical heart issues. You should consult a cardiovascular specialist if you experience:
- Progressive Fatigue: A persistent lack of energy that interferes with daily tasks, often a sign of a struggling valve.
- Exertional Dyspnea: Shortness of breath during activities that were previously easy, such as climbing a flight of stairs.
- Heart Palpitations: A sensation of a racing, fluttering, or skipping heart, which may indicate a rhythm disorder like Atrial Fibrillation.
- Chest Discomfort: Vague pressure or tightness, particularly during exercise.
- Syncope (Fainting): Sudden lightheadedness or loss of consciousness, which can be caused by a severely narrowed aortic valve.
- Edema: Swelling in the ankles or feet, suggesting the heart is not pumping blood efficiently.
3. List of Associated Diseases
MICS is highly effective for specific isolated conditions but is generally not used for cases requiring multiple different types of repairs at once. Associated diseases include:
- Mitral and Tricuspid Valve Disease: Leakage (regurgitation) or narrowing (stenosis) of the heart's valves.
- Aortic Valve Disease: Specifically calcification of the aortic valve.
- Coronary Artery Disease (CAD): Specifically for bypassing one or two main arteries (MIDCAB).
- Atrial Septal Defect (ASD): A "hole in the heart" present from birth.
- Atrial Fibrillation: Treated via a "Surgical Maze" procedure to restore normal rhythm.
- Benign Heart Tumors: Such as a myxoma, which can be safely removed via a small incision.
4. List of Screening Tests for this Procedure
To determine if a patient's anatomy is suitable for a "keyhole" approach, a specialized diagnostic panel is required:
- 2D/3D Echocardiogram: To evaluate the exact severity of valve disease and the heart's overall pumping strength.
- Multislice CT Scan (MSCT): A critical test to map the chest's internal geometry and the position of the heart relative to the ribs.
- Coronary Angiography: To ensure there are no hidden blockages in the arteries that might require a larger, traditional surgery.
- Pulmonary Function Tests (PFTs): Essential because MICS often requires temporary "deflation" of one lung during the procedure to provide the surgeon with a clear view.
- Vascular Mapping (Doppler/CT): To check if the groin vessels are healthy enough to be used for the heart-lung machine connection.
5. Am I eligible for this procedure?
Eligibility for MICS is determined by a "Heart Team" and is more selective than traditional surgery.
- Ideal Candidates: Patients with isolated valve disease or simple congenital defects and those with "preserved" heart function (Ejection Fraction >40%).
- Anatomical Factors: Your ribs must be spaced wide enough for instruments, and your heart must be positioned in a way that is accessible through a side incision.
- Ineligibility: You may be ineligible if you have severe lung disease (preventing one-lung ventilation), extreme obesity (which limits instrument reach), or very complex, multi-vessel blockages requiring five or more bypasses.
6. Pre and Post Care for this Procedure
Pre-Procedure Care:
Fasting: No food or drink for at least 8 hours before the operation.
- Medication Adjustment: You must stop blood thinners (like Warfarin) and certain diabetes medications (like Metformin) as instructed.
- Skin Preparation: Using specialized antibacterial soap for 2 days prior to surgery to minimize infection risk.
- Smoking Cessation: Patients must quit smoking at least 2 weeks before MICS to ensure the lungs can handle the procedure.
Post-Procedure Care:
ICU Monitoring: You will spend 24 to 48 hours in the ICU for close monitoring of your rhythm and blood pressure.
- Respiratory Therapy: Frequent use of an "incentive spirometer" (breathing device) to fully expand the lungs after surgery.
- Early Mobilization: You will be encouraged to sit up and walk within 24 hours to prevent blood clots.
- Lifting Restrictions: While less restrictive than open surgery, you should avoid heavy lifting (>10 lbs) for 2 to 4 weeks.
7. Days Required for Hospitalization
Because the breastbone remains intact, recovery in the hospital is significantly accelerated. Most patients undergoing MICS are discharged within 3 to 5 days.
Disclaimer: As per doctor’s advise the number of day’s may get modified based on your individual recovery speed, the complexity of the surgery, and the stabilization of your heart rhythm.
8. Benefits of this Procedure
- Minimal Scarring: Instead of a large vertical scar, patients have small 2-inch incisions that often fade and are hidden under the arm or breast.
- Reduced Pain: Because the sternum is not broken, patients require far fewer narcotic pain medications during recovery.
- Lower Infection Risk: Smaller incisions mean less exposure to environmental bacteria, leading to a much lower risk of deep chest infections.
- Less Blood Loss: MICS involves less tissue trauma, significantly reducing the need for blood transfusions.
- Faster Functional Recovery: Most patients return to work and driving within 2 to 3 weeks, compared to 8 to 12 weeks for traditional surgery.
