In Medical Care, Matthew McHugh and colleagues, including Linda Aiken and Raina Merchant, explore the association between nurse staffing, nurse work environments, and survival rates for in-hospital cardiac arrest (IHCA). Nurses are likely the first responders to IHCA, thus playing a critical role in improving outcomes from these events. Using data from the American Heart Association, the University of Pennsylvania Multi-State Nursing Care and Patient Safety survey, and the American Hospital Association annual survey, the authors modeled the association of nursing features – staffing ratios and environment – and surviving IHCA and being discharged from the hospital,. The study finds each additional patient per nurse in medical-surgical units is associated with a 5% lower likelihood of surviving ICHA to discharge. Additionally, patients in hospitals with a poor nursing work environment were 16% less likely to survive IHCA than patients cared for in hospitals with better work environments.