A protocol for prospective observational study to determine if non-anaemic iron deficiency worsens postoperative outcome in adult patients undergoing elective cardiac surgery: the IDOCS study

Table 1 Schedule of assessments during the study

Assessment	Pre-anaesthetic assessment	Day of surgery	Intra-operative	Day 3 post-operative	Discharge from acute care	Day 30 postoperative	Day 45 postoperative*	Day 90 postoperative
Eligibility criteria	×
Patient characteristics		×
Medical history		×
EQ-5D-5L		×				×
WHODAS 2.0		×						×
FBE	×			×			×
Iron studies	×
CRP	×
EuroSCORE-II		×
Intraoperative data			×
Requirement for allogeneic blood products			×	×	×	×
QoR-15				×
Primary endpoint						×
Secondary endpoint of special significance								×
Mortality/readmission					×	×		×
Complications					×	×		×
Patient off study								×

WHODAS World Health Organization Disability Assessment Schedule, FBE full blood examination, CRP C-reactive protein, EuroSCORE European System for Cardiac Operative Risk Evaluation, QoR quality of recovery
*Assessment performed in one centre only

ISSN: 2047-0525