The nurse is caring for a client who is receiving a blood transfusion and is complaining of a cough. the nurse checks the client's vital signs, which include temperature of 97.2°f (36.2°c), pulse of 108 beats per minute, blood pressure of 152/76 mm hg, respiratory rate of 24 breaths per minute, and an oxygen saturation level of 95% on room air. the client denies pain at this time. based on this information, what initial action should the nurse take?