Inclusion Criteria:  All patients >18 years undergoing elective coronary angiography or angioplasty procedures in the 2 months window from consent.  Exclusion Criteria:  Patients undergoing other cardiac procedures simultaneously such as EP studies, pacing and structural heart disease intervention. Emergency primary percutaneous coronary intervention. Vulnerable groups (children under 18 years old, pregnancy, mental health problems that render them unable to give informed consent).