Changing csf collection bag on evd with another rn, per policy & procedure.Pt's evd clamped for procedure.Difficult to unscrew connection between buritrol & collection bag.The connection snapped causing collection bag to fall off & buritrol system to need replaced which resulted in the pt's evd to remain clamped for 5-10 minutes.Patient began to vomit and became unresponsive.Attempted to arouse while waiting for neurosurg resident to come & reconnect drainage system.Condition c (code critical) initated.Neurosurg resident to bedside to reconnect evd drainage system.Pt began to become arousable once drain was unclamped by md.Notified charge rn and unit manager.No lasting harm.
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