Drain monitoring and clinical assessment
Coma
COMA
All included patients received passive subdural drainage and were allowed immediate postoperative mobilization with the drain open and attached by an adhesive bandage at the level of the clavicula. Recovery nursing staff recorded drain production, Glasgow Coma Scale (GCS) score, and degree of mobilization (in bed, sitting in chair, or walking around) every hour for 24 hours. The drainage bag was regularly emptied, and the volume was read in a measuring flask. The accuracy of the drained volume was +/- 5 milliliters (ml). The draining tube (from brain to drainage bag) can contain a total of approximately 1.5–2 ml.