Increasing Computed Tomography Use for Patients With Appendicitis and Discrepancies in Pain Management Between Adults and Children: An Analysis of the NHAMCS - 21/04/12
, Lisa M. Asnis, ScM c, Roland C. Merchant, MD, MPH b, c, Siraj Amanullah, MD, MPH a, b, James G. Linakis, PhD, MD a, b
Address for correspondence: Daniel S. Tsze, MD, MPHRésumé |
Study objective |
Using a national sample of emergency department (ED) visits, we aim to describe use of CBC, computed tomography (CT), and pain medication among ED visits in which appendicitis was diagnosed. We describe use trends over time and identify use differences between adults and children.
Methods |
The ED component of the National Hospital Ambulatory Medical Care Survey was analyzed for 1992 through 2006, comprising a sample of 447,011 visits (representing an estimated total of approximately 1.5 billion visits), from which a sample of 1,088 patients (representing an estimated 3.7 million patients) received a diagnosis of appendicitis. The frequency of CBC and CT use and frequency of pain medication administration were determined. Survey-adjusted regression analyses were used to determine the probability of a patient receiving CBC, CT, or pain medication. Use was compared between adults and children.
Results |
During the course of the study, from 1996 to 2006, the percentage of patients with appendicitis who received a CT scan increased from 6.3% (95% confidence interval [CI] 0% to 15.3%) to 69% (95% CI 55.5% to 81.7%) for adults and from 0% to 59.8% (95% CI 31.6% to 87.9%) for children. CBC use for adults increased from 77.2% (95% CI 62.9% to 91.5%) to 92.8% (95% CI 85.8% to 99.7%) and decreased from 89.1% (95% CI 74.9% to 100.0%) to 68.4% (95% CI 41.9% to 94.9%) for children. The use of pain medications increased from 24.8% (95% CI 11.3% to 38.4%) to 69.9% (95% CI 56.7% to 83.1%) for adults and from 27.2% (95% CI 5.7% to 48.8%) to 42.8% (95% CI 18.1% to 67.5%) for children. The proportion of children who received parenteral narcotics (13.7% [95% CI 9.3% to 18.0%]) was less than that of adults (23% [95% CI 18.9% to 27.1%]).
Conclusion |
CT use has increased for patients with appendicitis over time, and CBC use remains high. There has been an increase in analgesic administration, but more than half of all patients with appendicitis had not received pain medication over the course of the entire study period. Children received fewer parenteral narcotics than adults and appeared to be preferentially treated with nonparenteral nonnarcotic analgesics.
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| Supervising editor: David M. Jaffe, MD |
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| Author contributions: DST, RCM, SA, and JGL conceived and designed the study and performed the interpretation of analysis. LMA and RCM managed the data set, provided statistical consultation about accuracy of the analysis, and performed the analysis. DST drafted the article, and all authors contributed substantially to its revision. DST takes responsibility for the paper as a whole. |
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| Funding and support: By Annals policy, all authors are required to disclose any and all commercial, financial, and other relationships in any way related to the subject of this article as per ICMJE conflict of interest guidelines (see www.icmje.org). The authors have stated that no such relationships exist. |
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| Earn CME Credit: Continuing Medical Education is available for this article at www.ACEP-EMedHome. |
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| Please see page 396 for the Editor's Capsule Summary of this article. |
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| Provide process.asp?qs_id=7598 on this article at the journal's Web site, www.annemergmed.com. |
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| A podcast for this article is available at www.annemergmed.com. |
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| Publication date: Available online July 29, 2011. |
Vol 59 - N° 5
P. 395-403 - mai 2012 Retour au numéro
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