Biochemistry and Cardiac Markers
Baseline blood tests, which included a basic electrolyte panel, C-reactive protein, and cardiac troponin I were recorded in all participants. Blood samples were collected by a registered nurse or advanced nurse practitioner into lithium heparin blood bottles. Blood samples were transported to the Cork University Hospital biochemistry laboratory within 15 minutes of being drawn and analysis of blood samples were completed immediately upon receipt. Six hours following DC cardioversion repeat blood samples for C-Reactive Protein and Cardiac Troponin I quantification were collected via direct venous puncture. The measurement of pre-cardioversion and six hours post was determined by the Third Universal Definition of Myocardial Infarction guidelines on ‘Biomarker Detection of Myocardial Injury with Necrosis.’(19)