Effect of a nursing-implemented sedation protocol on weaning outcome.

OBJECTIVE: To evaluate the effect of the implementation of a nursing-driven protocol of sedation on duration of intubation. DESIGN: Before-and-after prospective study. SETTING: 18-bed medical-surgical intensive care unit. PATIENTS: Patients receiving mechanical ventilation longer than 48 hrs who were ready to wean. INTERVENTIONS: During the observational period, sedatives and analgesics were adjusted according to physicians' orders. During the intervention period, sedatives and analgesics were adjusted by nurses according to an algorithm-based sedation guideline, including a sedation scale. MEASUREMENTS AND MAIN RESULTS: A total of 356 patients were included in the study (176 patients in the observational period and 189 patients in the intervention period). There were no significant differences in the duration of intubation between the two periods (median, 7 [interquartile range, 5-13] days vs. 7 [interquartile range, 5-9] days). In a Kaplan-Meier analysis, the probability of successful extubation was higher during the intervention period than during the observational period (log-rank = 0.02). During the intervention period, patients were more awake without a significant increment in the nurse workload; however, there was no significant decrease in the total doses of sedatives and analgesics administered. CONCLUSIONS: The implementation of a nursing-driven protocol of sedation may improve the probability of successful extubation in a heterogeneous population of mechanically ventilated patients.

Does sedation practice delay time to extubation?

UNLABELLED: Criteria for performing a spontaneous breathing trial (SBT) have not been evaluated in controlled trials. An important component of these criteria is neurological status. The objective of this study was to evaluate whether physicians take mental status into consideration before performing an SBT in mechanically ventilated patients. METHODS: This was a prospective, observational study which included 355 mechanically ventilated patients. Daily assessments were made of whether the patients met criteria for performing a SBT. On the day a patient met the criteria, the level of sedation was evaluated using the Glasgow Coma Scale as modified by Cook and Palma (GCS-Cook) and it was registered whether or not the physician carried out an SBT. RESULTS: Two hundred and four patients (57%) underwent an SBT on the day they met the criteria (cohort 1) and in 151 patients (cohort 2) the SBT was delayed a median time of 1 day (interquartile range 1-2). There were differences in the GCS-Cook score on the day the criteria were met for performing an SBT (mean 13+/-3 points in cohort 1 versus 9+/-3 points in cohort 2; P<0.001). There were differences (P<0.001) between the cohorts in days of intubation and length of stay in the intensive care unit. CONCLUSIONS: Neurological status/level of sedation is a factor in the decision whether or not to perform a spontaneous breathing trial.