About this trial

This international, multicentre prospective cohort study will assess whether perioperative duration and magnitude of mean arterial pressure (MAP) outside of an individual's cerebral autoregulation (CA) limits using near-infrared spectroscopy (NIRS) and transcranial Doppler (TCD) are associated with adverse neurological events. It is to investigate whether patients with a higher burden of cerebral haemodynamic insults have an increased incidence or poorer neurological outcomes. Associations between neurologic outcomes, neurobiomarkers and genetic tests will be explored.

Eligibility criteria

Qualifiers

Elective primary or reoperative coronary artery bypass graft and/or valvular and/or ascending aorta surgery requiring cardiopulmonary bypass.

Disqualifiers

Surgery requiring moderate (28-31.9ºC) or deep (<28ºC) hypothermic circulatory arrest;

Heart and/or lung transplantation;

Urgent (within 24 hours) and emergency surgery;

Inability to follow procedures or insufficient knowledge in English, German or French;

Trial design

Treatments tested in this trial

  • Preoperative data collection
  • Intraoperative NIRS
  • Intraoperative TCD
  • Intraoperative invasive MAP
  • Postoperative NIRS
  • Postoperative data collection
  • Collection of serum biomarker panel
  • Collection of blood sample for genetic study

Treatment groups

No treatment groups listed

Locations

4
Switzerland
Clinic for Anaesthesia, Intermediate Care, Prehospital Emergency Medicine and Pain Therapy, University Hospital Basel4031, Basel Switzerland
Inselspital, Bern University Hospital3010, Bern Switzerland
United Kingdom
Cambridge University Hospitals and Brain Physics LabCB2 0QQ, Cambridge United Kingdom
Royal Papworth Hospital, Department of Anaesthesia and Intensive CareCB2 0QQ, Cambridge United Kingdom

Sponsors and collaborators

University Hospital, Basel, Switzerland

Lead sponsor