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Hom J, Kaplan C, Fowler S, Messina C, Chandran L, Kunkov S. Evidence-Based Diagnostic Test Accuracy of History, Physical Examination, and Imaging for Intussusception: A Systematic Review and Meta-analysis. Pediatr Emerg Care 2022; 38:e225-e230. [PMID: 32941364 DOI: 10.1097/pec.0000000000002224] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Intussusception is the most common cause of pediatric small bowel obstruction. Timely and accurate diagnosis may reduce the risk of bowel ischemia. We quantified the diagnostic test accuracy of history, physical examination, abdominal radiographs, and point-of-care ultrasound. METHOD We conducted a systematic review for diagnostic test accuracy of history, physical examination, and imaging concerning for intussusception. Our literature search was completed in June 2019. Databases included Medline via Ovid, Embase, Scopus, and Wiley Cochrane Library. We conducted a second review of the literature up to June 2019 for any additional studies. Inclusion criteria were younger than 18 years and presenting to the emergency department for abdominal complaints, consistent with intussusception. We performed data analysis using mada, version 0.5.8. We conducted univariate and bivariate analysis (random effects model) with DerSimonian-Laird and Reitsma model, respectively. QUADAS-2 was used for bias assessment. RESULTS The literature search identified 2639 articles, of which 13 primary studies met our inclusion criteria. Abdominal pain, vomiting, and bloody stools had positive likelihood ratios LR(+) between 1 and 2, whereas the negative likelihood ratio, LR(-), ranged between 0.4 and 0.8. Abnormal abdominal radiograph had LR(+) of 2.5 and LR(-) of 0.20, whereas its diagnostic odds ratio was 13. Lastly, point-of-care ultrasound had LR(+) of 19.7 and LR(-) of 0.10. The diagnostic odds ratio was 213. CONCLUSIONS History and physical examination had low diagnostic test accuracy. Abdominal radiographs had low diagnostic test accuracy, despite moderate discriminatory characteristics. Point-of-care ultrasound had the highest diagnostic test accuracy to rule in or rule out intussusception.
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Affiliation(s)
| | | | - Susan Fowler
- Washington University, Brown School Library, St. Louis, MO
| | - Catherine Messina
- Department of Family, Population and Preventive Medicine, Stony Brook University Renaissance School of Medicine, Stony Brook, NY
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Bergmann KR, Arroyo AC, Tessaro MO, Nielson J, Whitcomb V, Madhok M, Yock-Corrales A, Guerrero-Quesada G, Chaudoin L, Berant R, Shahar-Nissan K, Deanehan JK, Lam SHF, Snelling PJ, Avendano P, Cohen SG, Friedman N, Ekpenyong A, Pade KH, Park DB, Lin-Martore M, Kornblith AE, Montes-Amaya G, Thomas-Mohtat R, Jin J, Watson D, Sivitz A. Diagnostic Accuracy of Point-of-Care Ultrasound for Intussusception: A Multicenter, Noninferiority Study of Paired Diagnostic Tests. Ann Emerg Med 2021; 78:606-615. [PMID: 34226072 DOI: 10.1016/j.annemergmed.2021.04.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/13/2021] [Accepted: 04/27/2021] [Indexed: 01/09/2023]
Abstract
STUDY OBJECTIVE To determine the diagnostic accuracy of point-of-care ultrasound (POCUS) performed by experienced clinician sonologists compared to radiology-performed ultrasound (RADUS) for detection of clinically important intussusception, defined as intussusception requiring radiographic or surgical reduction. METHODS We conducted a multicenter, noninferiority, observational study among a convenience sample of children aged 3 months to 6 years treated in tertiary care emergency departments across North and Central America, Europe, and Australia. The primary outcome was diagnostic accuracy of POCUS and RADUS with respect to clinically important intussusception. Sample size was determined using a 4-percentage-point noninferiority margin for the absolute difference in accuracy. Secondary outcomes included agreement between POCUS and RADUS for identification of secondary sonographic findings. RESULTS The analysis included 256 children across 17 sites (35 sonologists). Of the 256 children, 58 (22.7%) had clinically important intussusception. POCUS identified 60 (23.4%) children with clinically important intussusception. The diagnostic accuracy of POCUS was 97.7% (95% confidence interval [CI] 94.9% to 99.0%), compared to 99.3% (95% CI 96.8% to 99.9%) for RADUS. The absolute difference between the accuracy of RADUS and that of POCUS was 1.5 percentage points (95% CI -0.6 to 3.6). Sensitivity for POCUS was 96.6% (95% CI 87.2% to 99.1%), and specificity was 98.0% (95% CI 94.7% to 99.2%). Agreement was high between POCUS and RADUS for identification of trapped free fluid (83.3%, n=40/48) and decreased color Doppler signal (95.7%, n=22/23). CONCLUSION Our findings suggest that the diagnostic accuracy of POCUS performed by experienced clinician sonologists may be noninferior to that of RADUS for detection of clinically important intussusception. Given the limitations of convenience sampling and spectrum bias, a larger randomized controlled trial is warranted.
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Affiliation(s)
- Kelly R Bergmann
- Department of Pediatric Emergency Medicine, Children's Minnesota, Minneapolis, MN.
| | - Alexander C Arroyo
- Department of Pediatric Emergency Medicine, Maimonides Medical Center, Brooklyn, NY
| | - Mark O Tessaro
- Division of Pediatric Emergency Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Jonathan Nielson
- Department of Pediatric Emergency Medicine, Children's Minnesota, Minneapolis, MN
| | - Valerie Whitcomb
- Department of Pediatric Emergency Medicine, Children's Minnesota, Minneapolis, MN
| | - Manu Madhok
- Department of Pediatric Emergency Medicine, Children's Minnesota, Minneapolis, MN
| | - Adriana Yock-Corrales
- Department of Emergency Medicine, Hospital Nacional de Niños: "Dr. Carlos Sáenz Herrera," CCSS, San José, Costa Rica
| | - German Guerrero-Quesada
- Department of Surgery, Hospital Nacional de Niños: "Dr. Carlos Sáenz Herrera," CCSS, San José, Costa Rica
| | - Lindsey Chaudoin
- Department of Emergency Medicine, Atrium Health's Carolinas Medical Center, Charlotte, NC
| | - Ron Berant
- Department of Emergency Medicine, Schneider Children's Medical Center of Israel, Petah Tikva, Israel
| | - Keren Shahar-Nissan
- Department of Emergency Medicine, Schneider Children's Medical Center of Israel, Petah Tikva, Israel
| | - J Kate Deanehan
- Department of Pediatric Emergency Medicine, Johns Hopkins Children's Center, Baltimore, MD
| | - Samuel H F Lam
- Department of Emergency Medicine, Sutter Medical Center Sacramento, Sacramento, CA
| | - Peter J Snelling
- Department of Pediatric Emergency Medicine, Gold Coast University Hospital and Griffith University, Southport, Queensland, Australia
| | - Pablo Avendano
- Division of Pediatric Emergency Medicine, University of Minnesota Masonic Children's Hospital, Minneapolis, MN
| | - Stephanie G Cohen
- Department of Pediatrics and Emergency Medicine, Children's Healthcare Atlanta and Emory University, Atlanta, GA
| | - Nir Friedman
- Department of Pediatric Emergency Medicine, The Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel
| | - Atim Ekpenyong
- Department of Pediatrics, University of California, San Diego, CA
| | - Kathryn H Pade
- Department of Pediatrics, University of California, San Diego, CA
| | - Daniel B Park
- Department of Pediatrics and Emergency Medicine, University of North Carolina, Chapel Hill, NC
| | - Margaret Lin-Martore
- Department of Emergency Medicine and Pediatrics, University of California, San Francisco, San Francisco, CA
| | - Aaron E Kornblith
- Department of Emergency Medicine and Pediatrics, University of California, San Francisco, San Francisco, CA
| | - Gerardo Montes-Amaya
- Department of Pediatric Emergency Medicine, Hospital Infantil Ciudad Juárez, Chihuahua, Mexico
| | - Rosemary Thomas-Mohtat
- Department of Pediatric Emergency Medicine, Children's National Hospital, Washington, DC
| | - Jing Jin
- Department of Research and Sponsored Programs, Children's Minnesota, Minneapolis, MN
| | - Dave Watson
- Department of Research and Sponsored Programs, Children's Minnesota, Minneapolis, MN
| | - Adam Sivitz
- Department of Emergency Medicine, Newark Beth Israel Medical Center, Newark, NJ
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Lin‐Martore M, Olvera MP, Kornblith AE, Zapala M, Addo N, Lin M, Werner HC. Evaluating a Web-based Point-of-care Ultrasound Curriculum for the Diagnosis of Intussusception. AEM EDUCATION AND TRAINING 2021; 5:e10526. [PMID: 34041433 PMCID: PMC8138103 DOI: 10.1002/aet2.10526] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/24/2020] [Accepted: 08/25/2020] [Indexed: 05/15/2023]
Abstract
OBJECTIVES Intussusception is a pediatric medical emergency that can be difficult to diagnose. Radiology-performed ultrasound is the diagnostic study of choice but may lead to delays due to lack of availability. Point-of-care ultrasound for intussusception (POCUS-I) studies have shown excellent accuracy and reduced lengths of stay, but there are limited POCUS-I training materials for pediatric emergency medicine (PEM) providers. METHODS We performed a prospective cohort study assessing PEM physicians undergoing a primarily Web-based POCUS-I curriculum. We developed the POCUS-I curriculum using Kern's six-step model. The curriculum included a Web-based module and a brief, hands-on practice that was developed with a board-certified pediatric radiologist. POCUS-I technical skill, knowledge, and confidence were determined by a direct observation checklist, multiple-choice test, and a self-reported Likert-scale survey, respectively. We assessed participants immediately pre- and postcourse as well as 3 months later to assess for retention of skill, knowledge, and confidence. RESULTS A total of 17 of 17 eligible PEM physicians at a single institution participated in the study. For the direct observation skills test, participants scored well after the course with a median (interquartile range [IQR]) score of 20 of 22 (20-21) and maintained high scores even after 3 months (20 [20-21]). On the written knowledge test, there was significant improvement from 57.4% (95% CI = 49.8 to 65.2) to 75.3% (95% CI = 68.1 to 81.6; p < 0.001) and this improvement was maintained at 3 months at 81.2% (95% CI = 74.5 to 86.8). Physicians also demonstrated improved confidence with POCUS-I after exposure to the curriculum, with 5.9% reporting somewhat or very confident prior to the course to 76.5% both after the course and after 3 months (p < 0.001). CONCLUSION After a primarily Web-based curriculum for POCUS-I, PEM physicians performed well in technical skill in POCUS-I and showed improvement in knowledge and confidence, all of which were maintained over 3 months.
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Affiliation(s)
- Margaret Lin‐Martore
- Department of Emergency Medicine and PediatricsUniversity of CaliforniaSan FranciscoCAUSA
| | | | - Aaron E. Kornblith
- Department of Emergency Medicine and PediatricsUniversity of CaliforniaSan FranciscoCAUSA
| | - Matthew Zapala
- Department of Radiology and Biomedical ImagingSchool of MedicineUniversity of CaliforniaSan FranciscoCAUSA
| | - Newton Addo
- Department of Emergency MedicineUniversity of CaliforniaSan FranciscoCAUSA
| | - Michelle Lin
- Department of Emergency MedicineUniversity of CaliforniaSan FranciscoCAUSA
| | - Heidi C. Werner
- Department of Emergency Medicine and PediatricsUniversity of CaliforniaSan FranciscoCAUSA
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Lin-Martore M, Kornblith AE, Kohn MA, Gottlieb M. Diagnostic Accuracy of Point-of-Care Ultrasound for Intussusception in Children Presenting to the Emergency Department: A Systematic Review and Meta-analysis. West J Emerg Med 2020; 21:1008-1016. [PMID: 32726276 PMCID: PMC7390574 DOI: 10.5811/westjem.2020.4.46241] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 03/12/2020] [Accepted: 04/09/2020] [Indexed: 11/15/2022] Open
Abstract
INTRODUCTION Ileocolic intussusception is a common cause of pediatric bowel obstruction in young children but can be difficult to diagnose clinically due to vague abdominal complaints. If left untreated, it may cause significant morbidity. Point-of-care ultrasound (POCUS) is a rapid, bedside method of assessment that may potentially aid in the diagnosis of intussusception. The purpose of this systematic review and meta-analysis was to determine the diagnostic accuracy of POCUS for children with suspected ileocolic intussusception by emergency physicians (EP). METHODS We conducted a systematic search on PubMed, Embase, CINAHL, LILACS, the Cochrane databases, Google Scholar, as well as conference abstracts, and assessed bibliographies of selected articles for all studies evaluating the accuracy of POCUS for the diagnosis of intussusception in children. We dual extracted data into a predefined worksheet and performed quality analysis with the QUADAS-2 tool. Data were summarized and a meta-analysis was performed. RESULTS Six studies (n = 1303 children) met our inclusion criteria. Overall, 11.9% of children had intussusception. POCUS was 94.9% (95% confidence interval [CI], 89.9% to 97.5%) sensitive and 99.1% (95% CI, 94.7% to 99.8%) specific with a likelihood ratio (LR)+ of 105 (95% CI, 18 to 625) and a LR- of 0.05 (95% CI, 0.03 to 0.10). CONCLUSION POCUS by EPs is highly sensitive and specific for the identification of intussusception for children presenting to the emergency department.
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Affiliation(s)
- Margaret Lin-Martore
- University of California, San Francisco, Department of Emergency Medicine and Pediatrics, San Francisco, California
| | - Aaron E. Kornblith
- University of California, San Francisco, Department of Emergency Medicine and Pediatrics, San Francisco, California
| | - Michael A. Kohn
- Stanford University, Department of Emergency Medicine, Stanford, California
- University of California, San Francisco, Department of Epidemiology & Biostatistics, San Francisco, California
| | - Michael Gottlieb
- Rush University Medical Center, Department of Emergency Medicine, Chicago, Illinois
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