Let me share my transfusion horror story:
Our policy was to stay with the patient for the first 15 minutes of the transfusion. VS were to be done q 15 min x2. I stayed with the pt. After about 2-3 minutes of the transfusion, the patient began acting differently. She became sluggish, just turned over and said she did not feel well and wanted to sleep (of course it is the middle of the night when these things happen). Any way, I turned off the blood, called the MD. Discontinued the blood and did transfusion reaction work up per policy. Mind you, the patients VS never changed. Temp, Pulse, BP all within normal range for pt.
Pt. perked up. Stable rest of night.
I came back to work next morning. Pt had gone to surgery for the problem she had come to hospital for. Transfusion was to get hgb up for surgery.
I asked about her, because they put her on the GYN floor post op. Was told: She is doing fine considering she got the wrong blood type.
I started to replay what I did. Making sure I did everything right. If I did everything right how did that happen.
Seems the lab person had labeled the blood wrong. Pt got an incompatible blood type. Fortunately only a few cc's of it. To say the least, the lab tech was immediately fired. No one ever said a word to me except the Doc who knew the situation, who said I did good stopping it as soon as I did.
So, with a little experience behind me, I think you did right. The timing for the CT was in progress. No way you could change that. And starting the blood after the CT was the right decision. Too many bad things could have happened if that pt had left your unit with that blood infusing. You were right on with your thinking.