HEMODYNAMIC DISSOCIATION AND REGIONALCOMPLIANCE FAILURE IN SEPARATED AORTICVALVE AND SUPRACORONARY ASCENDING AORTAREPLACEMENT: MECHANICS OF THE WHEATPROCEDURE

DOI : 10.36106/paripex

PARIPEX - INDIAN JOURNAL OF RESEARCH | Volume - 15 | Issue - 09 |September - 2026 | PRINT ISSN No. 2250 - 1991

https://www.worldwidejournals.com/paripex/recent_issues_pdf/2026/September/hemodynamic-dissociation-and-regional-compliance-failure-in-separated-aortic-valve-and-supracoronary-ascending-aorta-replacement-mechanics-of-the-wheat-procedure_September_2026_7910310646_7400414.pdf

The Wheat procedure serves as an alternative to composite graft root replacement for patients presenting with simultaneous aortic valve disease and ascending aortic aneurysms when the sinuses of Valsalva remain structurally undilated. Despite its surgical elegance and avoidance of coronary reimplantation, separating the rigid prosthetic valve housing from the synthetic supracoronary Dacron tube graft induces alterations in regional cardiac fluid dynamics and vascular biomechanics. This comprehensive analysis deconstructs the advanced fluid-structure interaction (FSI) profiles across the left ventricular outflow tract (LVOT), native sinus segment, and synthetic aortic neo-media. It establishes the biomechanical pathways through which the procedure impairs regional vascular compliance. It also outlines the structural mitigation achieved when maintaining a strict 5mm geometric sizing variance between the internal mechanical/bioprosthetic valve orifice and the external supracoronary vascular graft. Additionally,this paper provides fully structured, step-by-step technical guides, granular operational indications and contraindications, highlevel professional tips, and a comprehensive forward-looking review of emerging innovations within modern cardiovascular bioengineering.