How frequently should a patient's vital signs be checked during the transfusion process?

During a blood transfusion, it is critical to monitor a patient’s vital signs to detect any potential adverse reactions early. The correct practice involves checking vital signs closely before the transfusion begins, then at set intervals during the procedure, particularly right after the start and again at the end. This method allows for close monitoring, especially within the first 15 minutes when the risk for transfusion reactions is highest. By taking vital signs twice immediately after initiation and once again at the end of the transfusion, healthcare professionals can effectively identify any changes that may indicate complications, ensuring prompt intervention if necessary. This approach underscores the importance of vigilant oversight during blood transfusions for patient safety.