There have been surveys done of medical personnel in general who have been involved in unexpected patient deaths, whether from known but unexpected factors or accidental factors, that reveal increased rates of emotional distress, substance abuse, etc, among practitioners. Many hospitals have instituted mandatory counseling for those involved, even as observers.

I never asked my T while in therapy. But in his position as the director of a University counseling center, and knowing there have been a number of suicides on campus over the years, I assume he had some involvement, even if the individuals were not in therapy with him, his interns, or at the center. I know when I came close, and only informed him after the fact (it was during a vacation break), he took it very seriously and compassionately, put some safety measures in place, and made it very clear that he wanted me to contact him immediately if that urge arose, 3AM or not.

He did tell me a couple of years ago, post retirement, of the suicide of one of his friends. Although the man's friends had no inkling, he had apparently told his wife of his intention, as a result of a number of health problems with poor prognosis. My T seemed to take it with regret, yet acceptance.