## Pre-Operative Assessment of Rheumatic Valve Disease ### Rationale for Transesophageal Echocardiography with 3D Imaging **Key Point:** Transesophageal echocardiography (TEE) with 3D imaging is the investigation of choice for detailed pre-operative morphologic assessment of rheumatic valves, particularly when deciding between repair and replacement. **High-Yield:** TEE with 3D imaging provides: - Superior spatial resolution of valve morphology compared to TTE - Detailed assessment of commissural fusion, leaflet thickening, and calcification - Visualization of subvalvular apparatus (papillary muscles, chordae tendinae) - Evaluation of suitability for surgical repair (valve repair feasibility depends on commissural anatomy) - Detection of associated lesions (thrombus, vegetations) - Real-time guidance during interventional procedures - Better assessment in patients with poor acoustic windows ### Comparison Table: Imaging Modalities in Pre-Operative Valve Assessment | Investigation | Valve Morphology | Calcification | Repair Suitability | Invasiveness | Timing | |---|---|---|---|---|---| | **TTE** | Moderate | Fair | Limited | Non-invasive | Initial | | **TEE with 3D** | Excellent | Excellent | Excellent | Semi-invasive | Pre-op | | **Cardiac CT** | Excellent | Excellent | Good | Non-invasive | Pre-op (if TEE contraindicated) | | **Cardiac catheterization** | Poor | Fair | Poor | Invasive | Rarely for morphology | **Clinical Pearl:** In rheumatic aortic stenosis, the degree of calcification and commissural fusion are critical determinants of repair feasibility. TEE with 3D imaging allows the surgeon to plan the operative approach and predict success of repair versus need for replacement. **Mnemonic: "TEE-3D-PRE"** — **T**ransesophageal **E**cho with **3D** is **P**re-operative gold standard for **R**epair **E**valuation. 
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