Developing the Synergy Model Patient Acuity Tool for Admission, Discharge, and Transfer.

BACKGROUND: The Admission Discharge Transfer-Synergy Model Acuity Tool (ADT-SMAT) was developed to quantify patient intervention intensity and patient response variability and to capture nurses' critical thinking. The tool is based on the American Association of Critical-Care Nurses Synergy Model for Patient Care. OBJECTIVE: To determine whether the ADT-SMAT is reliable and valid for predicting the level of care for admission, discharge, and transfer of critically ill patients. Methods Reliability was examined by using interrater reliability, intraclass coefficient, and effect size analyses to evaluate physiological variables and total calculated ADT-SMAT score in 246 patients. Content validity was determined in consultation with critical care nurses, and construct validity was examined by assessing the correlation between ADT-SMAT scores and other convergent and divergent constructs. RESULTS: The ADT-SMAT showed strong reliability for measuring the physiological variables and total score, with an intraclass coefficient of 0.930. The value of Cohen d determining the effect size for each element of the ADT-SMAT was less than 0.20 for every element, indicating that substantial differences in scoring did not occur. The validity of the ADT-SMAT requires additional testing. CONCLUSIONS: This is the first study attempting to correlate Synergy Model patient characteristics and acuity while integrating nurses' critical decision-making process. With further testing, the ADT-SMAT could be a valuable tool to quantify and standardize patient characteristics in determining the appropriate level of care associated with admission, discharge, and transfer decisions.

Prehospital hypocapnia and poor outcome after severe traumatic brain injury.

BACKGROUND: The Brain Trauma Foundation (BTF) Guidelines for prehospital management of traumatic brain injury (TBI) recommend a goal end-tidal carbon dioxide of 30 mm Hg to 35 mm Hg in patients without signs of herniation. METHODS: We examined prehospital concordance with BTF Guidelines, selected demographic and physiologic variables and outcomes for 100 consecutive admissions to a well-established Level I regional trauma center. All patients had blunt TBI with Glasgow Coma Score < or = 8 without signs of herniation. All were transported by helicopter by flight paramedics experienced with BTF Guidelines and the continuous wave form capnometer. Patients resumed spontaneous ventilation after intubation. RESULTS: Concordance (prehospital end-tidal carbon dioxide > 29 mm Hg) was achieved in 65 of 100 cases. Mortality was 29% (19 of 65) among those in whom guideline levels were achieved prehospital and 46% (16 of 35) in those in whom guideline levels were not achieved prehospital (odds ratio, 0.49; p = 0.10). The "achieved" group was younger (p = 0.02), with higher calculated probability of survival (p = 0.01). Intracranial pressure was maintained under intensive care within acceptable limits in the hospital in both groups but was significantly higher in the "not achieved" group (p = 0.05). CONCLUSIONS: Our data, though not statistically significant, suggest that patients who are harder to keep within the guidelines in the field are more likely to die, because of more severe TBI or complication by other factors such as age or injury severity. Whether increased awareness of this phenomenon can improve outcomes is unknown but suggests an approach to future education and research.