A patient at a Massachusetts General Hospital bipolar clinic stabbed his psychiatrist during a treatment session yesterday afternoon, and was then shot dead by an off-duty security guard, in a frantic scene that a colleague later described as “every psychiatrist’s worst nightmare.’’

Dr. Astrid Desrosiers, a 49-year-old instructor of psychiatry at Harvard Medical School, the mother of grown children, and a celebrated doctor in the city’s Haitian community, was in stable condition at MGH and recovering from her wounds, relatives, colleagues, and hospital officials said. Continue reading