This prospective observational study evaluates the association of peri-procedural changes in renal regional oxygen saturation and post-procedural acute kidney injury in patients undergoing transcatheter aortic valve implantation.

This prospective observational cohort study evaluated the association of renal regional oxygen saturation, measured during transcatheter aortic valve implantation, and post-procedural acute kidney injury. Renal regional oxygen saturation is measured using near-infrared spectroscopy on the skin surface over the kidneys.

Inclusion Criteria:

• Adult patients (>= 20 years old) undergoing transcatheter (transfemoral) aortic valve implantation

Exclusion Criteria:

• Emergent procedure
• Pre-procedural severe renal impairment (eGFR < 30 mL/min/1.73 m2)
• Pre-procedural hemodialysis
• Distance from skin to renal capsule > 4 cm
• Pre-procedural mechanical ventilation
• Refuse to participate

Adult patients (age >= 20 years) undergoing transfemoral transcatheter aortic valve implantation are eligible for this observational study.