OBJECTIVES: Appropriate use of cranial computed tomography (CT) scanning in patients with mild blunt head trauma and preinjury anticoagulant or antiplatelet use is unknown. The objectives of this study were: 1) to identify risk factors for immediate traumatic intracranial hemorrhage (tICH) in patients with mild head trauma and preinjury warfarin or clopidogrel use and 2) to derive a clinical prediction rule to identify patients at low risk for immediate tICH. METHODS: This was a prospective, observational study at two trauma centers and four community hospitals that enrolled adult emergency department (ED) patients with mild blunt head trauma (initial ED Glasgow Coma Scale [GCS] score 13 to 15) and preinjury warfarin or clopidogrel use. The primary outcome measure was immediate tICH, defined as the presence of ICH or contusion on the initial cranial CT. Risk for immediate tICH was analyzed in 11 independent predictor variables. Clinical prediction rules were derived with both binary recursive partitioning and multivariable logistic regression. RESULTS: A total of 982 patients with a mean (± standard deviation [SD]) age of 75.4 (±12.6) years were included in the analysis. Sixty patients (6.1%; 95% confidence interval [CI] = 4.7% to 7.8%) had immediate tICH. History of vomiting (relative risk [RR] = 3.53; 95% CI = 1.80 to 6.94), abnormal mental status (RR = 2.85; 95% CI = 1.65 to 4.92), clopidogrel use (RR = 2.52; 95% CI = 1.55 to 4.10), and headache (RR = 1.81; 95% CI = 1.11 to 2.96) were associated with an increased risk for immediate tICH. Both binary recursive partitioning and multivariable logistic regression were unable to derive a clinical prediction model that identified a subset of patients at low risk for immediate tICH. CONCLUSIONS: While several risk factors for immediate tICH were identified, the authors were unable to identify a subset of patients with mild head trauma and preinjury warfarin or clopidogrel use who are at low risk for immediate tICH. Thus, the recommendation is for urgent and liberal cranial CT imaging in this patient population, even in the absence of clinical findings.
OBJECTIVES: Appropriate use of cranial computed tomography (CT) scanning in patients with mild blunt head trauma and preinjury anticoagulant or antiplatelet use is unknown. The objectives of this study were: 1) to identify risk factors for immediate traumatic intracranial hemorrhage (tICH) in patients with mild head trauma and preinjury warfarin or clopidogrel use and 2) to derive a clinical prediction rule to identify patients at low risk for immediate tICH. METHODS: This was a prospective, observational study at two trauma centers and four community hospitals that enrolled adult emergency department (ED) patients with mild blunt head trauma (initial ED Glasgow Coma Scale [GCS] score 13 to 15) and preinjury warfarin or clopidogrel use. The primary outcome measure was immediate tICH, defined as the presence of ICH or contusion on the initial cranial CT. Risk for immediate tICH was analyzed in 11 independent predictor variables. Clinical prediction rules were derived with both binary recursive partitioning and multivariable logistic regression. RESULTS: A total of 982 patients with a mean (± standard deviation [SD]) age of 75.4 (±12.6) years were included in the analysis. Sixty patients (6.1%; 95% confidence interval [CI] = 4.7% to 7.8%) had immediate tICH. History of vomiting (relative risk [RR] = 3.53; 95% CI = 1.80 to 6.94), abnormal mental status (RR = 2.85; 95% CI = 1.65 to 4.92), clopidogrel use (RR = 2.52; 95% CI = 1.55 to 4.10), and headache (RR = 1.81; 95% CI = 1.11 to 2.96) were associated with an increased risk for immediate tICH. Both binary recursive partitioning and multivariable logistic regression were unable to derive a clinical prediction model that identified a subset of patients at low risk for immediate tICH. CONCLUSIONS: While several risk factors for immediate tICH were identified, the authors were unable to identify a subset of patients with mild head trauma and preinjury warfarin or clopidogrel use who are at low risk for immediate tICH. Thus, the recommendation is for urgent and liberal cranial CT imaging in this patient population, even in the absence of clinical findings.
Authors: I G Stiell; G A Wells; K Vandemheen; C Clement; H Lesiuk; A Laupacis; R D McKnight; R Verbeek; R Brison; D Cass; M E Eisenhauer; G Greenberg; J Worthington Journal: Lancet Date: 2001-05-05 Impact factor: 79.321
Authors: Daniel K Nishijima; Steven R Offerman; Dustin W Ballard; David R Vinson; Uli K Chettipally; Adina S Rauchwerger; Mary E Reed; James F Holmes Journal: Ann Emerg Med Date: 2012-06 Impact factor: 5.721
Authors: Daniel K Nishijima; Samuel Gaona; Trent Waechter; Ric Maloney; Troy Bair; Adam Blitz; Andrew R Elms; Roel D Farrales; Calvin Howard; James Montoya; Jeneita M Bell; Victor C Coronado; David E Sugerman; Dustin W Ballard; Kevin E Mackey; David R Vinson; James F Holmes Journal: Prehosp Emerg Care Date: 2016-09-16 Impact factor: 3.077
Authors: Daniel K Nishijima; Samuel D Gaona; Trent Waechter; Ric Maloney; Adam Blitz; Andrew R Elms; Roel D Farrales; James Montoya; Troy Bair; Calvin Howard; Megan Gilbert; Renee P Trajano; Kaela M Hatchel; Mark Faul; Jeneita M Bell; Victor C Coronado; David R Vinson; Dustin W Ballard; Daniel J Tancredi; Hernando Garzon; Kevin E Mackey; Kiarash Shahlaie; James F Holmes Journal: J Neurotrauma Date: 2018-02-09 Impact factor: 5.269
Authors: Daniel K Nishijima; Samuel D Gaona; Trent Waechter; Ric Maloney; Troy Bair; Adam Blitz; Andrew R Elms; Roel D Farrales; Calvin Howard; James Montoya; Jeneita M Bell; Mark Faul; David R Vinson; Hernando Garzon; James F Holmes; Dustin W Ballard Journal: Ann Emerg Med Date: 2017-02-24 Impact factor: 5.721
Authors: Suzanne Mason; Maxine Kuczawski; M Dawn Teare; Matt Stevenson; Steve Goodacre; Shammi Ramlakhan; Francis Morris; Joanne Rothwell Journal: BMJ Open Date: 2017-01-13 Impact factor: 2.692
Authors: James A Chenoweth; M Austin Johnson; Laura Shook; Mark E Sutter; Daniel K Nishijima; James F Holmes Journal: West J Emerg Med Date: 2017-07-14