BMC Med Inform Decis Mak - Predicting out of intensive care unit cardiopulmonary arrest or death using electronic medical record data.

Tópicos

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Resumo

CKGROUND: Accurate, timely and automated identification of patients at high risk for severe clinical deterioration using readily available clinical information in the electronic medical record (EMR) could inform health systems to target scarce resources and save lives.METHODS: We identified 7,466 patients admitted to a large, public, urban academic hospital between May 2009 and March 2010. An automated clinical prediction model for out of intensive care unit (ICU) cardiopulmonary arrest and unexpected death was created in the derivation sample (50% randomly selected from total cohort) using multivariable logistic regression. The automated model was then validated in the remaining 50% from the total cohort (validation sample). The primary outcome was a composite of resuscitation events, and death (RED). RED included cardiopulmonary arrest, acute respiratory compromise and unexpected death. Predictors were measured using data from the previous 24 hours. Candidate variables included vital signs, laboratory data, physician orders, medications, floor assignment, and the Modified Early Warning Score (MEWS), among other treatment variables.RESULTS: RED rates were 1.2% of patient-days for the total cohort. Fourteen variables were independent predictors of RED and included age, oxygenation, diastolic blood pressure, arterial blood gas and laboratory values, emergent orders, and assignment to a high risk floor. The automated model had excellent discrimination (c-statistic=0.85) and calibration and was more sensitive (51.6% and 42.2%) and specific (94.3% and 91.3%) than the MEWS alone. The automated model predicted RED 15.9 hours before they occurred and earlier than Rapid Response Team (RRT) activation (5.7 hours prior to an event, p=0.003)CONCLUSION: An automated model harnessing EMR data offers great potential for identifying RED and was superior to both a prior risk model and the human judgment-driven RRT.

Resumo Limpo

ckground accur time autom identif patient high risk sever clinic deterior use readili avail clinic inform electron medic record emr inform health system target scarc resourc save livesmethod identifi patient admit larg public urban academ hospit may march autom clinic predict model intens care unit icu cardiopulmonari arrest unexpect death creat deriv sampl random select total cohort use multivari logist regress autom model valid remain total cohort valid sampl primari outcom composit resuscit event death red red includ cardiopulmonari arrest acut respiratori compromis unexpect death predictor measur use data previous hour candid variabl includ vital sign laboratori data physician order medic floor assign modifi earli warn score mew among treatment variablesresult red rate patientday total cohort fourteen variabl independ predictor red includ age oxygen diastol blood pressur arteri blood gas laboratori valu emerg order assign high risk floor autom model excel discrimin cstatist calibr sensit specif mew alon autom model predict red hour occur earlier rapid respons team rrt activ hour prior event pconclus autom model har emr data offer great potenti identifi red superior prior risk model human judgmentdriven rrt

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