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Minhong Choa 2 Articles
Validity of Transfusing Group O+ Unmatched Packed Red Blood Cells in Hemorrhagic Shock Patients
Ji Hwan Lee, Minhong Choa, Junho Cho, Sung Pil Chung
J Korean Soc Traumatol. 2009;22(2):167-171.
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AbstractAbstract PDF
PURPOSE
It is important to begin a transfusion safely and appropriately as soon as possible in a hemorrhagic shock patient. A group O+ unmatched pack red blood cell (universal O+) transfusion may satisfy that requirement. We report our experiences with universal O+ to compare its usefulness for hemorrhagic shock patients with that of a matched pack red blood cell transfusion in the emergency department (ED).
METHODS
This is a retrospective study. Patients who had systolic blood pressure of less than 90 mmHg or a pulse rate of more than 120 beats per minute in the ED were included, and their medical records were reviewed. The collected data were demographic data, vital signs, blood test results, time to transfusion, the amount of transfusion, complications, and diagnoses. We calculated the emergency transfusion score (ETS) based on the patients' medical records.
RESULTS
Two hundred thirty-five patients were included. Forty-eight patients (36 trauma and 12 non-trauma patients) were transfused with a universal O+. These patients had less time to transfusion compared with the cross-matched transfusion groups (35+/-42 versus 170+/-187 minutes, p<0.001). There were no differences in complications between groups (p=0.076). Of the patients who were transfused with universal O+, 94.4% got more than 3 ETS.
CONCLUSION
The universal O+ transfusion, compared with matched pack red blood cell transfusion, should be a useful treatment for ED hemorrhagic shock patient due to its having a shorter time to transfusion without an increase in complications.
Summary
NEXUS and the Canadian Cervical Spine Rule as a Screening Tool for Computed Tomography Evaluation in Patients with Cervical Spine Injury
Yang Hwan Choi, Junho Cho, Minhong Choa, Yoo Seok Park, Hyun Soo Chung, Sung Pil Chung
J Korean Soc Traumatol. 2008;21(1):15-21.
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AbstractAbstract PDF
PURPOSE
National Emergency X-Radiography Utilization Study (NEXUS) criteria and the Canadian Cervical Spine rule (CCR) are commonly used in cervical trauma patients to determine whether a plain cervical X-ray should be performed. However, plain cervical X-rays are so inaccurate that cervical spine computed tomography (CT) is often considered as a screening test. We studied the usefulness of the NEXUS criteria and the CCR for determining the need for a CT evaluation in the emergency department (ED).
METHODS
This prospective observational study was conducted from January 2007 to March 2008. Plain Xray and CT scans of the cervical spine were performed on blunt trauma patients with neck pain. The relevancy of CT was examined using the NEXUS criteria and the CCR. Sensitivity, specificity, positive predicted value, and negative predicted value analyses were performed to diagnose the cervical spine injury.
RESULTS
During the study period, 284 patients were enrolled in this study. The sensitivity, specificity, positive predicted value, and negative predicted value of the NEXUS criteria were 87.5%, 1.1%, 5.0%, and 60.0% respectively, while those of the CCR were 87.5%, 8.2%, 5.3%, and 91.6%. There were two missed fracture cases when the NEXUS criteria and the CCR were applied independently, however, no cases were missed when both were applied.
CONCLUSION
This study suggests the NEXUS and the CCR in combination can be used as a guide to CT evaluation for cervical spine injury in the ED.
Summary

J Trauma Inj : Journal of Trauma and Injury