Predictors of Repeat Medical Emergency Team Activation in Deteriorating Ward Patients: A Retrospective Cohort Study.

Recurrent clinical deterioration and repeat medical emergency team (MET) activation are common and associated with high in-hospital mortality. This study assessed the predictors for repeat MET activation in deteriorating patients admitted to a general ward. We retrospectively analyzed the data of 5512 consecutive deteriorating hospitalized adult patients who required MET activation in the general ward. The patients were divided into two groups according to repeat MET activation. Multivariate logistic regression analyses were used to identify the predictors for repeat MET activation. Hematological malignancies (odds ratio, 2.07; 95% confidence interval, 1.54-2.79) and chronic lung disease (1.49; 1.07-2.06) were associated with a high risk of repeat MET activation. Among the causes for MET activation, respiratory distress (1.76; 1.19-2.60) increased the risk of repeat MET activation. A low oxygen saturation-to-fraction of inspired oxygen ratio (0.97; 0.95-0.98), high-flow nasal cannula oxygenation (4.52; 3.56-5.74), airway suctioning (4.63; 3.59-5.98), noninvasive mechanical ventilation (1.52; 1.07-2.68), and vasopressor support (1.76; 1.22-2.54) at first MET activation increased the risk of repeat MET activation. The risk factors identified in this study may be useful to identify patients at risk of repeat MET activation at the first MET activation. This would allow the classification of high-risk patients and the application of aggressive interventions to improve outcomes.

Effects of a medical emergency team follow-up programme on patients discharged from the medical intensive care unit to the general ward: a single-centre experience.

RATIONALE, AIMS AND OBJECTIVES: The aim of this study was to analyse the effects of the follow-up programme implemented by the Asan Medical Center Medical Emergency Team (MET). METHOD: A quasi-experimental pre-post intervention design was used, retrospectively reviewed. The follow-up programme includes respiratory care, regular visits and communication between the attending doctors and MET nurse for patients discharged from the medical intensive care unit (MICU) to the general ward. This programme has been implemented since February 2013. Outcomes of patients before and at 1 year after the introduction of the programme were retrospectively reviewed. RESULTS: A total of 1229 patients were enrolled and divided two groups (Before, n = 624; After the introduction of the programme, n = 625). Forty-six patients (3.7%) were readmitted to the ICU within 72 hours, and there was no significant difference found between the two groups (3.7% versus 3.7%, P = 0.996). Respiratory distress was the most common reason for readmission (67.4%). Cardiac arrest developed in four (0.6%) Before patients; whereas, no cardiac arrest occurred in the After group (0.0%, P = 0.062) cases. A total of 223 patients were discharged to the step-down units. The SOFA (sequential organ failure assessment) score was significantly higher in the step-down unit patients than general ward patients (4.9 ± 2.8 versus 6.2 ± 3.1, P = 0.000). In the analysis restricted to patients discharged to step-down units, unplanned ICU readmissions significantly decreased in the After group (9.3% versus 2.6%, P = 0.034). CONCLUSIONS: The implementation of the MET follow-up programme did not change the rate of ICU readmission and cardiac arrest; however, its introduction was associated with the reduced ICU readmission of the high-risk patient populations discharged to the step-down unit.

Activation of a medical emergency team using an electronic medical recording-based screening system*.

OBJECTIVES: To evaluate the efficacy of a medical emergency team activated using 24-hour monitoring by electronic medical record-based screening criteria followed by immediate intervention by a skilled team. DESIGN: Retrospective cohort study. SETTING: Academic tertiary care hospital with approximately 2,700 beds. PATIENTS: A total of 3,030 events activated by a medical emergency team from March 1, 2008, to February 28, 2010. INTERVENTION: None. MEASUREMENTS AND MAIN RESULTS: We collected data for all medical emergency team activations: patient characteristics, trigger type for medical emergency team (electronic medical record-based screening vs calling criteria), interventions during each event, outcomes of the medical emergency team intervention, and 28-day mortality after medical emergency team activation. We analyzed data for 2009, when the medical emergency team functioned 24 hours a day, 7 days a week (period 2), compared with that for 2008, when the medical emergency team functioned 12 hours a day, 7 days a week (period 1). The commonest cause of medical emergency team activation was respiratory distress (43.6%), and the medical emergency team performed early goal-directed therapy (21.3%), respiratory care (19.9%), and difficult airway management (12.3%). For patients on general wards, 51.3% (period 1) and 38.4% (period 2) of medical emergency team activations were triggered by the electronic medical record-based screening system (electronic medical record-triggered group). In 23.4%, activation occurred because of an abnormality in laboratory screening criteria. The commonest activation criterion from electronic medical record-based screening was respiratory rate (39.4%). Over half the patients were treated in the general ward, and one third of the patients were transferred to the ICU. The electronic medical record-triggered group had lower ICU admission with an odds ratio of 0.35 (95% CI, 0.22-0.55). In surgical patients, the electronic medical record-triggered group showed the lower 28-day mortality (10.5%) compared with the call-triggered group (26.7%) or the double-triggered group (33.3%) (odds ratio 0.365 with 95% CI, 0.154-0.867, p = 0.022). CONCLUSIONS: We successful managed the medical emergency team with electronic medical record-based screening criteria and a skilled intervention team. The electronic medical record-triggered group had lower ICU admission than the call-triggered group or the double-triggered group. In surgical patients, the electronic medical record-triggered group showed better outcome than other groups.