I guessing now you are a hospital clip board carrier. I serve on committees with plenty of them including the QI commitee (quality improvement) where major adverse results are peer reviewed and discussed.
Tracking intra-hospital complications is vastly different than calling something a sentinel event which if you go back and read your post is what you said. A sentinel event is something that could be considered off the bell curve and as is reportable to the state who then investigates the matter.
Examples of a sentinel events are: wrong side surgery, an unexpected death from a minor procedure
I'm sorry to inform you a run of the mill pneumothorax from a liver biopsy does not qualify.
You can have the last word if you want. There is no need to beat this further to death.