The goal of this observational study is to learn about how screening tests inform the radial artery (RA) suitability for harvesting and coronary bypass grafting in adults with ischaemic heart disease. The main question it aims to answer is: • What factors influence the diagnostic accuracy of RA screening in patients undergoing surgical coronary revascularisation? Participants will: * Receive an assessment of their RA through routinely used techniques (Modified Allen Test +/- pulse-oximetry, Barbeau Test and Ultrasound examination) * Answer a symptoms scale about their physical experience after surgery
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Sensitivity of Radial Artery Assessment Techniques
Timeframe: From enrollment to the end of treatment at 12 weeks.
Specificity of Radial Artery Assessment Techniques
Timeframe: From enrollment to the end of treatment at 12 weeks.
Negative and Positive predictive values of Radial Artery Assessment Techniques
Timeframe: From enrollment to the end of treatment at 12 weeks.