New CT technique could spare some cardiac arrest patients from invasive heart tests

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

* Inclusion: * Adults (≥18 years) with sustained return of spontaneous circulation (ROSC) following in/out-of-hospital cardiac arrest. * Informed consent from patient or representative obtained before invasive coronary angiography. * Exclusion * Patients on VA-ECMO * ACS STEMI or STEMI "equivalent" * New left/right bundle branch block * ST segment depression in leads V1-V3, when the terminal T wave is positive and concomitant ST-segment elevation ≥ 0,5mm recorded in leads V7-V9 (posterior MI) * ST-segment elevation in V7-V9 (posterior MI) or V3R-V4R (RV MI) * ACS NSTEMI with persistent ST depression despite optimal therapy, suggesting ongoing myocardial ischemia, with indication for an urgent ICA according to the treating physician. * Hemodynamic/electrical instability precluding CT imaging (as perceived by the treating physician) * Life-threatening arrhythmia potentially caused by acute myocardial ischemia * Absolute contraindications to iodinated contrast * Patients with a known non-cardiac cause of cardiac arrest (e.g., traumatic brain injury, overt hemorrhage, asphyxia/severe hypoxia due to known lung disease, trauma, severe metabolic/electrolyte derangement, or intoxication) as perceived by the treating physician, where chest CT is considered unnecessary. * Known or likely pregnancy or lactation * Severe bleeding issue (as perceived by the treating physician) precluding heparin administration during radial access coronary angiography. * Prior coronary intervention (stent implantation/CABG). * CT findings indicating a condition that precludes coronary angiography in the short term. * Patients with end-of-life care pathways. * Participation in another intervention study interfering with the research questions in OPEN CCT Arrest.