Neurological and Clinical Outcomes After In-Hospital Cardiac Arrest Following a New Legislation on Life-Sustaining Treatments
Abstract Background: The precise neurological profiles after in-hospital cardiac arrest (IHCA) are yet to be elucidated. We aimed to evaluate the neurological profiles of patients with IHCA from early time to long-term follow-up and the changes in their neurological outcomes after implementing legislation on the cessation of life-sustaining treatments.Methods: A national legislation allowing the withdrawal of life-sustaining treatments was implemented in South Korea on February 4, 2018. For this prospective cohort study, we established a neurological rapid response team on March 21, 2017, and serially evaluated the neurological status of patients with IHCA from the initial resuscitation to 12 months after the onset of IHCA. The primary outcome was good neurological status defined as a Clinical Performance Category score (range from 1 to 5, with higher scores indicating greater disability) of 1−2 at 12 months after IHCA. The secondary outcomes were the awakening and neurological recovery during the first week and the survival at 12 months. The outcomes were also compared between before and after the implementation of the legislation.Results: Of 291 adult patients with IHCA, 144 were included in the Before Period, and 147 were included in the After Period. Physician Orders for Life-Sustaining Treatments were made in 63 (42.9%) patients in the After Period. On the first day and during the first week after IHCA, the awakening was achieved in 21.0% and 40.9%, respectively, and neurological recovery in 4.1% and 15.8%, respectively. The proportion of patients with good neurological status at 12 months was not significantly different between the Before Period (19.0%) and the After Period (15.1%; p = 0.37). Awakening (40.0% vs. 42.2%; p = 0.65) and neurological recovery (16.7% vs. 15.0%; p = 0 .69) during the first week as well as survival at 12 months (25.0% vs. 18.4%; p = 0.17) also did not show significant differences between the two periods. Conclusion: Awakening and neurological recovery were remarkable throughout the first week. In the current study, implementating the legislation allowing the cessation of life-sustaining treatments did not significantly affect the neurological and survival outcomes after IHCA. Trial registration: This study was registered in clinical-trial.gov (NCT03006484) in December 2016.