81 patients underwent WLST: 79 died, and two survived to be discharged from hospital. Thirty-six patients (45%) died within 60 minutes of WLST, and 45 (55%) survived 60 minutes or longer. Mean ICU stay before WLST was 4.8 days (range, 1-85 days). Mean time from WLST to death was 6:31 h (range, 1 minute to 31 days). A modified University of Wisconsin assessment tool showed no statistical association with the time from WLST to death (P = 0.09). The adapted United Network for Organ Sharing tool, systolic blood pressure, APACHE II score, ventilatory dependence, oxygen disruption, Glasgow Coma Scale (GCS) score and staff specialist opinion all showed a statistically significant association with time from WLST to death (P < 0.05).
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