Has anyone ever recommended definitive guidelines on blood pressure changes for nursing to follow for a reported transfusion reaction? Standards indicate that changes, usually acute, either hypertensive or hypotensive should be reported. Sometimes changes occur, but nursing has a difficult time making a subjective decision on whether to call. If anyone has used definitive criteria, what degree of change triggers the call? 30 mm/40 mm? and is diastolic vs. systolic addressed?