Higher Nurse Staffing Levels Associated with Reductions in Unplanned Readmissions to Intensive Care or Operating Theatre, and in Postoperative In-hospital Mortality in Heart Surgery Patients

Implications for practice and research: Higher nurse staffing levels for postoperative care of cardiac surgery patients reduces the risk of unplanned re-admission to the intensive care or operating theatre and in-hospital mortality. Larger international studies are needed to assess the effect of nurse staffing levels and risk of hospital-wide adverse events.