Select Congenital Heart Defect (CHD)
Ventricular Septal Defect (VSD) - Pre-Op Simulation
Left-to-Right Shunt (L → R)
Systemic SpOâ‚‚
98%
Arterial Saturation
Normal Target
Pulm/Syst Flow (Qp/Qs)
2.1
Flow Ratio
Pulmonary Overcirc
Pulm Artery Press (PAP)
32
mmHg (Mean)
Mild Pulm HTN
Cardiac Output (CO)
1.4
L / min
Adequate
Anatomical & Surgical Breakdown
Ventricular Septal Defect (VSD)
A VSD is an opening in the interventricular septum allowing oxygenated blood from the high-pressure Left Ventricle (LV) to flow into the Right Ventricle (RV). This increases pulmonary blood flow (elevated Qp/Qs ratio) and can lead to pulmonary hypertension over time.
Primary Surgical Interventions:
- Pledgeted Synthetic (Dacron/Gore-Tex) Patch Closure via Right Atriotomy.
- Transcatheter Occluder Device placement in selected muscular VSDs.
- Post-op Outcome: Restores normal non-shunting parallel-to-series circulation, normalizing Qp/Qs to 1.0.