Victor T T Chao

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A 72-year-old Chinese female with prior mitral valve replacement with a mechanical prosthesis 13 years before was diagnosed with severe symptomatic aortic stenosis. She was considered a high-risk surgical candidate and was considered for transcatheter aortic valve implantation using a balloon-expandable device. The close proximity of the non-compliant(More)
BACKGROUND To review the experience of surgical repair of post-infarction ventricular septal rupture (VSR) and analyze the associated outcomes and prognostic factors. METHODS Following approval from the Singhealth Centralised Institutional Review Board (reference: 2011/881/C), a retrospective review was performed on 38 consecutive patients who had(More)
A best evidence topic was written according to a structured protocol. The question addressed was: does preoperative statin therapy prevent postoperative atrial fibrillation (AF) in patients undergoing cardiac surgery? There were 445 papers found using the reported search. From these, 12 represented the best evidence to answer the clinical question. The(More)
Fibrosis is a common pathology in cardiovascular disease. In the heart, fibrosis causes mechanical and electrical dysfunction and in the kidney, it predicts the onset of renal failure. Transforming growth factor β1 (TGFβ1) is the principal pro-fibrotic factor, but its inhibition is associated with side effects due to its pleiotropic roles. We hypothesized(More)
This study evaluates various wrist and thumb positions for tensioning the extensor indicis proprius when transferred to the extensor pollicis longus tendon to determine which positions provide optimum passive range of flexion and extension of the thumb. In five adult cadaver upper limbs, transfer of the extensor indicis proprius to the extensor pollicis(More)
Surgical aortic valve replacement (AVR) is the standard of care for patients with symptomatic severe aortic stenosis (AS), providing relief of symptoms and prolonging survival. However, many patients are either denied or not offered surgery due to high surgical risk or non-operability for open AVR. The technology of percutaneous aortic valve implantation(More)
Entrapment of the elephant trunk graft within the false lumen is a rare complication of surgical repair of an aortic dissection. This is normally retrieved by emergent open surgery. We describe a technique of endovascular retrieval of the dislodged graft, during hybrid aortic arch repair. The elephant trunk was cannulated through and through from a femoral(More)
BACKGROUND/OBJECTIVES This study aims to examine iliofemoral anatomy and predictors of vessel size and tortuosity in Asian patients as transfemoral transcatheter aortic valve implantation (TAVI) may be limited by the smaller Asian physique. METHODS Characteristics and vessel dimensions of 549 patients undergoing ultrasonography were reviewed. The minimal(More)
The use of the abductor digiti minimi transfer to restore opposition in patients with hypoplasia of the thumb has been widely described in the literature. It has been found to be effective in restoring abduction, but less so in restoring the rotational component of opposition. In cases where there is concomitant supination of the thumb, abductor digiti(More)
ardio 77-year-old man presented with increasingly ymptomatic severe aortic stenosis (AS). Echocardioram showed an aortic valve area of 0.6 cm and a ean pressure gradient of 57 mm Hg. It could not be scertained conclusively if the valve was tricuspid or icuspid due to heavy calcification (Figs. 1A and 1B). ortic annulus was 20 mm in diameter. Left ventriclar(More)