Witnessed resuscitation of adult and paediatric hospital patients: An umbrella review of the evidence.

Objective: To examine the research evidence about whether families were allowed to witness cardiopulmonary resuscitation on hospitalised adult and paediatric patients; and the views of patients, families and health professionals, about witnessed cardiopulmonary resuscitation.

Design: An umbrella review methodology of systematic reviews with sufficient methodological quality.

Review Methods: Papers published in Spanish and English between, 1 January 2009 and 31 December 2018 were considered.