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Table 4 Urgency of the procedure.*

From: European registry of type A aortic dissection (ERTAAD) - rationale, design and definition criteria

Urgency Definition
Urgent Scheduled procedure performed in paucisymptomatic patients with stable hemodynamic conditions during the index hospitalization since the next working day from admission
Emergency grade 1 Procedure performed in patients with stable conditions and without malperfusion before the beginning of the next working day
Emergency grade 2 Procedure performed in patients with hemodynamic instability despite the use of inotropes and/or any malperfusion before the beginning of the next working day - no cardiopulmonary resuscitation with chest compression required
Salvage grade 1 Procedure performed in patients requiring cardiopulmonary resuscitation with external chest compressions and/or open chest cardiac massage between induction of anesthesia and initiation of cardiopulmonary bypass
Salvage grade 2 Procedure performed in patients requiring cardiopulmonary resuscitation with external chest compressions en route to the operating theatre or before induction of anesthesia
  1. Further details on the definition criteria of the urgency of the procedure are reported in the text