The next day, my cardiologist called to say he was sorry I had trouble with the procedure and that my pro-time was way off.
I was surprised to hear that my pro-time had fallen to 14.
We had started with a pro-time of 22 seconds, and he wanted it about 18 seconds.
Anyway, the dose was dropped, and, two weeks later, the new pro-time was reported as 22 seconds.
The second 22-second pro-time was reported with a normalization ratio that had fallen significantly from the first 22-second pro-time.