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Association of Pediatric Medical Emergency Teams With Hospital Mortality
Shelby Kutty1, Philip G Jones2, Quentin Karels1
1Division of Cardiology, Department of Pediatrics, Children's Hospital and Medical Center, University of Nebraska Medical Center, and Creighton University (S.K.).
Insights
Medical emergency teams were implemented in pediatric hospitals, but did not reduce hospital mortality rates beyond existing trends. Further research is needed to understand the impact of these teams on patient outcomes.
Area of Science:
- Pediatric critical care medicine
- Health services research
Background:
- Medical emergency teams (METs) aim to prevent in-hospital cardiac arrest by responding to acute physiological decline.
- Previous studies on METs and mortality have limitations, often not accounting for preimplementation trends.
Purpose of the Study:
- To evaluate the association between MET implementation and hospital mortality rates in freestanding pediatric hospitals.
- To determine if METs reduce mortality beyond established preimplementation trends.
Main Methods:
- Analysis of annual risk-adjusted mortality rates from 2000-2015 in the Pediatric Health Information System.
- Utilized a random slopes interrupted time series analysis to assess MET impact on mortality trends.
Main Results:
- Hospital mortality decreased by 6.0% annually before MET implementation.
- Post-MET implementation, mortality continued to decrease by 6.0% annually, with no significant change in the mortality slope.
- No difference was observed between predicted and actual mortality rates five years after MET implementation.
Conclusions:
- MET implementation in a large sample of US pediatric hospitals was not associated with a reduction in hospital mortality beyond preimplementation trends.
- The findings suggest that existing mortality reduction trends continued post-MET implementation without an added benefit.
Background:
Implementation of medical emergency teams has been identified as a potential strategy to reduce hospital deaths, because these teams respond to patients with acute physiological decline in an effort to prevent in-hospital cardiac arrest. However, prior studies of the association between medical emergency teams and hospital mortality have been limited and typically have not accounted for preimplementation mortality trends.
Methods:
Within the Pediatric Health Information System for freestanding pediatric hospitals, annual risk-adjusted mortality rates were calculated for sites between 2000 and 2015. A random slopes interrupted time series analysis then examined whether implementation of a medical emergency team was associated with lower-than-expected mortality rates based on preimplementation trends.
Results:
Across 38 pediatric hospitals, mean annual hospital admission volume was 15 854 (range, 6684-33 024), and there were a total of 1 659 059 hospitalizations preimplementation and 4 392 392 hospitalizations postimplementation. Before medical emergency team implementation, hospital mortality decreased by 6.0% annually (odds ratio [OR], 0.94; 95% confidence interval [CI], 0.92-0.96) across all hospitals. After medical emergency team implementation, hospital mortality continued to decrease by 6% annually (OR, 0.94; 95% CI, 0.93-0.95), with no deepening of the mortality slope (ie, not lower OR) in comparison with the preimplementation trend, for the overall cohort (P=0.98) or when analyzed separately within each of the 38 study hospitals. Five years after medical emergency team implementation across study sites, there was no difference between predicted (hospital mean of 6.18 deaths per 1000 admissions based on preimplementation trends) and actual mortality rates (hospital mean of 6.48 deaths per 1000 admissions; P=0.57).
Conclusions:
Implementation of medical emergency teams in a large sample of pediatric hospitals in the United States was not associated with a reduction in hospital mortality beyond existing preimplementation trends.
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