Document Detail

Outcomes and Radiation Exposure of Emergency Department Patients With Chest Pain and Shortness of Breath and Ultralow Pretest Probability: A Multicenter Study.
MedLine Citation:
PMID:  24120629     Owner:  NLM     Status:  Publisher    
STUDY OBJECTIVE: Excessive radiation exposure remains a concern for patients with symptoms suggesting acute coronary syndrome and pulmonary embolism but must be judged in the perspective of pretest probability and outcomes. We quantify and qualify the pretest probability, outcomes, and radiation exposure of adults with both chest pain and dyspnea.
METHODS: This was a prospective, 4-center, outcomes study. Patients were adults with dyspnea and chest pain, nondiagnostic ECGs, and no obvious diagnosis. Pretest probability for both acute coronary syndrome and pulmonary embolism was assessed with a validated method; ultralow risk was defined as pretest probability less than 2.5% for both acute coronary syndrome and pulmonary embolism. Patients were followed for diagnosis and total medical radiation exposure for 90 days.
RESULTS: Eight hundred forty patients had complete data; 23 (3%) had acute coronary syndrome and 15 (2%) had pulmonary embolism. The cohort received an average of 4.9 mSv radiation to the chest, 48% from computed tomography pulmonary angiography. The pretest probability estimates for acute coronary syndrome and pulmonary embolism were less than 2.5% in 227 patients (27%), of whom 0 of 277 (0%; 95% confidence interval 0% to 1.7%) had acute coronary syndrome or pulmonary embolism and 7 of 227 (3%) had any significant cardiopulmonary diagnosis. The estimated chest radiation exposure per patient in this ultralow-risk group was 3.5 mSv, including 26 (3%) with greater than 5 mSv radiation to the chest and no significant cardiopulmonary diagnosis.
CONCLUSION: One quarter of patients with chest pain and dyspnea had ultralow risk and no acute coronary syndrome or pulmonary embolism but were exposed to an average of 3.5 mSv radiation to the chest. These data can be used in a clinical guideline to reduce radiation exposure.
Jeffrey A Kline; Nathan I Shapiro; Alan E Jones; Jackeline Hernandez; Melanie M Hogg; Jennifer Troyer; R Darrell Nelson
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-10-10
Journal Detail:
Title:  Annals of emergency medicine     Volume:  -     ISSN:  1097-6760     ISO Abbreviation:  Ann Emerg Med     Publication Date:  2013 Oct 
Date Detail:
Created Date:  2013-10-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8002646     Medline TA:  Ann Emerg Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2013 American College of Emergency Physicians. Published by Mosby, Inc. All rights reserved.
Department of Emergency Medicine, Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN. Electronic address:
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