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Yıldız Potter İ, Leo MM, Vaziri A, Feldman JA. Automated detection and localization of pericardial effusion from point-of-care cardiac ultrasound examination. Med Biol Eng Comput 2023; 61:1947-1959. [PMID: 37243852 PMCID: PMC11194944 DOI: 10.1007/s11517-023-02855-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 05/17/2023] [Indexed: 05/29/2023]
Abstract
Focused Assessment with Sonography in Trauma (FAST) exam is the standard of care for pericardial and abdominal free fluid detection in emergency medicine. Despite its life saving potential, FAST is underutilized due to requiring clinicians with appropriate training and practice. To aid ultrasound interpretation, the role of artificial intelligence has been studied, while leaving room for improvement in localization information and computation time. The purpose of this study was to develop and test a deep learning approach to rapidly and accurately identify both the presence and location of pericardial effusion on point-of-care ultrasound (POCUS) exams. Each cardiac POCUS exam is analyzed image-by-image via the state-of-the-art YoloV3 algorithm and pericardial effusion presence is determined from the most confident detection. We evaluate our approach over a dataset of POCUS exams (cardiac component of FAST and ultrasound), comprising 37 cases with pericardial effusion and 39 negative controls. Our algorithm attains 92% specificity and 89% sensitivity in pericardial effusion identification, outperforming existing deep learning approaches, and localizes pericardial effusion by 51% Intersection Over Union with ground-truth annotations. Moreover, image processing demonstrates only 57 ms latency. Experimental results demonstrate the feasibility of rapid and accurate pericardial effusion detection from POCUS exams for physician overread.
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Affiliation(s)
| | - Megan M Leo
- School of Medicine, Boston University (BU), Chobanian & Avedisian, Boston, MA, USA
- Department of Emergency Medicine, Boston Medical Center (BMC), Boston, MA, USA
| | | | - James A Feldman
- School of Medicine, Boston University (BU), Chobanian & Avedisian, Boston, MA, USA
- Department of Emergency Medicine, Boston Medical Center (BMC), Boston, MA, USA
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2
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Conombo B, Guertin JR, Tardif PA, Gagnon MA, Duval C, Archambault P, Berthelot S, Lauzier F, Turgeon AF, Stelfox HT, Chassé M, Hoch JS, Gabbe B, Champion H, Lecky F, Cameron P, Moore L. Economic Evaluation of In-Hospital Clinical Practices in Acute Injury Care: A Systematic Review. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2022; 25:844-854. [PMID: 35500953 DOI: 10.1016/j.jval.2021.10.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 08/27/2021] [Accepted: 10/31/2021] [Indexed: 06/14/2023]
Abstract
OBJECTIVES Underuse of high-value clinical practices and overuse of low-value practices are major sources of inefficiencies in modern healthcare systems. To achieve value-based care, guidelines and recommendations should target both underuse and overuse and be supported by evidence from economic evaluations. We aimed to conduct a systematic review of the economic value of in-hospital clinical practices in acute injury care to advance knowledge on value-based care in this patient population. METHODS Pairs of independent reviewers systematically searched MEDLINE, Embase, Web of Science, and Cochrane Central Register for full economic evaluations of in-hospital clinical practices in acute trauma care published from 2009 to 2019 (last updated on June 17, 2020). Results were converted into incremental net monetary benefit and were summarized with forest plots. The protocol was registered with PROSPERO (CRD42020164494). RESULTS Of 33 910 unique citations, 75 studies met our inclusion criteria. We identified 62 cost-utility, 8 cost-effectiveness, and 5 cost-minimization studies. Values of incremental net monetary benefit ranged from international dollars -467 000 to international dollars 194 000. Of 114 clinical interventions evaluated (vs comparators), 56 were cost-effective. We identified 15 cost-effective interventions in emergency medicine, 6 in critical care medicine, and 35 in orthopedic medicine. A total of 58 studies were classified as high quality and 17 as moderate quality. From studies with a high level of evidence (randomized controlled trials), 4 interventions were clearly dominant and 8 were dominated. CONCLUSIONS This research advances knowledge on value-based care for injury admissions. Results suggest that almost half of clinical interventions in acute injury care that have been studied may not be cost-effective.
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Affiliation(s)
- Blanchard Conombo
- Department of Social and Preventative Medicine, Université Laval, Québec City, Québec, Canada; Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Centre de Recherche du CHU de Québec (Hôpital de l'Enfant-Jésus), Université Laval, Québec City, Québec, Canada
| | - Jason R Guertin
- Department of Social and Preventative Medicine, Université Laval, Québec City, Québec, Canada
| | - Pier-Alexandre Tardif
- Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Centre de Recherche du CHU de Québec (Hôpital de l'Enfant-Jésus), Université Laval, Québec City, Québec, Canada
| | - Marc-Aurèle Gagnon
- Department of Social and Preventative Medicine, Université Laval, Québec City, Québec, Canada; Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Centre de Recherche du CHU de Québec (Hôpital de l'Enfant-Jésus), Université Laval, Québec City, Québec, Canada
| | - Cécile Duval
- Department of Social and Preventative Medicine, Université Laval, Québec City, Québec, Canada; Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Centre de Recherche du CHU de Québec (Hôpital de l'Enfant-Jésus), Université Laval, Québec City, Québec, Canada
| | - Patrick Archambault
- Department of Family Medicine and Emergency Medicine, Université Laval, Québec City, Québec, Canada; VITAM-Centre de recherche en santé durable, Université Laval, Québec City, Québec, Canada; Centre intégré de santé et de services sociaux de Chaudière-Appalaches, Université Laval, Québec City, Québec, Canada
| | - Simon Berthelot
- Department of Family Medicine and Emergency Medicine, Université Laval, Québec City, Québec, Canada
| | - François Lauzier
- Division of Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Université Laval, Québec City, Québec, Canada
| | - Alexis F Turgeon
- Division of Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Université Laval, Québec City, Québec, Canada
| | - Henry T Stelfox
- Department of Critical Care Medicine, Medicine and Community Health Sciences, O'Brien Institute for Public Health, University of Calgary, Calgary, Alberta, Canada
| | - Michaël Chassé
- Department of Medicine, Université de Montréal, Québec City, Québec, Canada
| | - Jeffrey S Hoch
- Division of Health Policy and Management, Department of Public Health Sciences, University of California, Davis, Davis, CA, USA
| | - Belinda Gabbe
- School of Public Health and Preventive Medicine at Monash University, Melbourne, Victoria, Australia
| | - Howard Champion
- Uniformed Services University of the Health Sciences Annapolis, Bethesda, MD, USA
| | - Fiona Lecky
- School of Health and Related Research, Sheffield, England, UK
| | - Peter Cameron
- School of Public Health and Preventive Medicine at Monash University, Melbourne, Victoria, Australia
| | - Lynne Moore
- Department of Social and Preventative Medicine, Université Laval, Québec City, Québec, Canada; Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Centre de Recherche du CHU de Québec (Hôpital de l'Enfant-Jésus), Université Laval, Québec City, Québec, Canada.
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3
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Offenbacher J, Kim PK, Nguyen V, Meltzer JA. Association of thoracic cage fractures and pericardial effusion in blunt trauma. Am J Emerg Med 2021; 50:729-732. [PMID: 34879494 DOI: 10.1016/j.ajem.2021.08.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/29/2021] [Accepted: 08/16/2021] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Several case reports suggest that penetrating thoracic cage fractures are an important cause for hemopericardium and cardiac tamponade following blunt trauma. However, the prevalence of this mechanism of injury is not fully known, and considering this association may provide a better understanding of the utility of cardiac component of the FAST (Focused Assessment with Sonography for Trauma). OBJECTIVE To determine the association of thoracic cage fractures and pericardial effusion in patients with blunt trauma. METHODS We performed a retrospective, multicenter cohort study using the Trauma Quality Improvement Program (TQIP) database (2015-2017) of adults ≥18 years of age whose mechanism of injury was either a fall or motor vehicle accident. Thoracic cage fractures were defined as any rib or sternum fracture. The primary outcome was the presence of pericardial effusion. Confounding variables were accounted for using multivariable logistic regression. RESULTS We included 1,673,704 patients in the study; 226,896 (14%) patients had at least one thoracic cage fracture. A pericardial effusion was present in 4923 (0.3%) patients. When a thoracic cage fracture was present, the odds of having a pericardial effusion was significantly higher (adjusted Odds Ratio [aOR] 6.5 [95% CI: 6.1-7.0]). Patients with left and right-sided rib fractures had similar odds of a pericardial effusion (aOR 1.2 [95% CI 1.04-1.4]). Sternal fractures carried the highest odds of having a pericardial effusion (aOR 11.1 [9.9-12.3]). CONCLUSION Thoracic cage fractures secondary to blunt trauma represent a significant independent risk factor for the development of a pericardial effusion. Our findings lend support for the mechanism of bony injuries causing penetrating cardiac trauma. Given these findings, and the fact that many thoracic cage fractures are detected after the initial evaluation, we support maintaining the cardiac view in the FAST examination for all blunt trauma patients.
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Affiliation(s)
- Joseph Offenbacher
- Albert Einstein College of Medicine, Department of Emergency Medicine, Jacobi Medical Center, 1400 Pelham Pkwy S, Room 1B25, Bronx, NY 10461, USA.
| | - Peter K Kim
- Albert Einstein College of Medicine, Department of Surgery, Jacobi Medical Center, 1400 Pelham Parkway S, Rm 510, Building 1, Bronx, NY 10461, USA
| | - Vincent Nguyen
- Albert Einstein College of Medicine, Department of Emergency Medicine, Jacobi Medical Center, 1400 Pelham Pkwy S, Room 1B25, Bronx, NY 10461, USA
| | - James A Meltzer
- Albert Einstein College of Medicine, Department of Pediatrics, Division of Emergency Medicine, Jacobi Medical Center, 1400 Pelham Parkway S, Room 1B25, Bronx, NY 10461, USA
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Patel KM, Kumar NS, Desai RG, Mitrev L, Trivedi K, Krishnan S. Blunt Trauma to the Heart: A Review of Pathophysiology and Current Management. J Cardiothorac Vasc Anesth 2021; 36:2707-2718. [PMID: 34840072 DOI: 10.1053/j.jvca.2021.10.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/09/2021] [Accepted: 10/13/2021] [Indexed: 11/11/2022]
Abstract
Blunt cardiac injury (BCI), defined as an injury to the heart from blunt force trauma, ranges from minor to life-threatening. The majority of BCIs are due to motor vehicle accidents; however, injuries caused by falls, blasts, and sports-related injuries also can be sources of BCI. A significant proportion of patients with BCI do not survive long enough to receive medical care, succumbing to their injuries at the scene of the accident. Additionally, patients with blunt trauma often have coexisting injuries (brain, spine, orthopedic) that can obscure the clinical picture; therefore, a high degree of suspicion often is required to diagnose BCI. Traditionally, hemodynamically stable injuries suspicious for BCI have been evaluated with electrocardiograms and chest radiographs, whereas hemodynamically unstable BCIs have received operative intervention. More recently, computed tomography and echocardiography increasingly have been utilized to identify injuries more rapidly in hemodynamically unstable patients. Transesophageal echocardiography can play an important role in the diagnosis and management of several BCIs that require operative repair. Close communication with the surgical team and access to blood products for potentially massive transfusion also play key roles in maintaining hemodynamic stability. With proper surgical and anesthetic care, survival in cases involving urgent cardiac repair can reach 66%-to-75%. This narrative review focuses on the types of cardiac injuries that are caused by blunt chest trauma, the modalities and techniques currently used to diagnose BCI, and the perioperative management of injuries that require surgical correction.
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Affiliation(s)
- Kinjal M Patel
- Adult Cardiothoracic Anesthesiology, Cooper University Healthcare, Cooper Medical School of Rowan University, Camden, NJ.
| | - Nakul S Kumar
- Cardiothoracic and Critical Care Anesthesiology, Anesthesiology Institute, Cleveland Clinic, Cleveland, OH
| | - Ronak G Desai
- Adult Cardiothoracic Anesthesiology, Cooper University Healthcare, Cooper Medical School of Rowan University, Camden, NJ
| | - Ludmil Mitrev
- Adult Cardiothoracic Anesthesiology, Cooper University Healthcare, Cooper Medical School of Rowan University, Camden, NJ
| | - Keyur Trivedi
- Adult Cardiothoracic Anesthesiology, Cooper University Healthcare, Cooper Medical School of Rowan University, Camden, NJ
| | - Sandeep Krishnan
- Adult Cardiothoracic Anesthesiology, Wayne State University School of Medicine Pontiac, MI
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Hemopericardium and Cardiac Tamponade After Blunt Thoracic Trauma: A Case Series and the Essential Role of Cardiac Ultrasound. J Emerg Med 2021; 61:e40-e45. [PMID: 34215473 DOI: 10.1016/j.jemermed.2021.05.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/21/2021] [Accepted: 05/30/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND Severe cardiac injury caused by penetrating rib or sternal fractures after blunt chest trauma is a rare clinical entity that has been described in only a few case reports over the last half-century. As a result, questions have arisen about the utility of the cardiac component in the Focused Assessment with Sonography in Trauma (cFAST) examination in evaluating blunt trauma patients. CASE REPORT We present a series of 3 patients who sustained blunt trauma and were discovered on cFAST examination to have developed pericardial tamponade from overlying rib or sternal fractures in the emergency departments of two academic level I trauma hospitals in the United States. Why Should an Emergency Physician Be Aware of This? These cases highlight the need for emergency and trauma physicians to be aware of blunt-induced, penetrating trauma to the heart and mediastinum, and for future trauma care guidelines to consider the importance of the cFAST examination.
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Lentz B, Fong T, Rhyne R, Risko N. A systematic review of the cost-effectiveness of ultrasound in emergency care settings. Ultrasound J 2021; 13:16. [PMID: 33687607 PMCID: PMC7943664 DOI: 10.1186/s13089-021-00216-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 02/19/2021] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND The use of ultrasound (US) in emergency departments (ED) has become widespread. This includes both traditional US scans performed by radiology departments as well as point-of-care US (POCUS) performed by bedside clinicians. There has been significant interest in better understanding the appropriate use of imaging and where opportunities to enhance cost-effectiveness may exist. The purpose of this systematic review is to identify published evidence surrounding the cost-effectiveness of US in the ED and to grade the quality of that evidence. METHODS We performed a systematic review of the literature following Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) guidelines. Studies were considered for inclusion if they were: (1) economic evaluations, (2) studied the clinical use of ultrasound, and (3) took place in an emergency care setting. Included studies were critically appraised using the Consolidated Health Economic Evaluation Reporting Standards checklist. RESULTS We identified 631 potentially relevant articles. Of these, 35 studies met all inclusion criteria and were eligible for data abstraction. In general, studies were supportive of the use of US. In particular, 11 studies formed a strong consensus that US enhanced cost-effectiveness in the investigation of pediatric appendicitis and 6 studies supported enhancements in the evaluation of abdominal trauma. Across the studies, weaknesses in methodology and reporting were common, such as lack of sensitivity analyses and inconsistent reporting of incremental cost-effectiveness ratios. CONCLUSIONS The body of existing evidence, though limited, generally demonstrates that the inclusion of US in emergency care settings allows for more cost-effective care. The most definitive evidence for improvements in cost-effectiveness surround the evaluation of pediatric appendicitis, followed by the evaluation of abdominal trauma. POCUS outside of trauma has had mixed results.
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Affiliation(s)
- Brian Lentz
- Department of Emergency Medicine, Highland Hospital-Alameda Health System, 1411 E. 31st Street, QIC 22123, Oakland, CA, 94602, USA
| | - Tiffany Fong
- Department of Emergency Medicine, Johns Hopkins University School of Medicine, 1800 Orleans St, Baltimore, MD, 21287, USA
| | - Randall Rhyne
- Department of Emergency Medicine, Johns Hopkins University School of Medicine, 1800 Orleans St, Baltimore, MD, 21287, USA
| | - Nicholas Risko
- Department of Emergency Medicine, Johns Hopkins University School of Medicine, 1800 Orleans St, Baltimore, MD, 21287, USA.
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Stojanovska J, Hurwitz Koweek LM, Chung JH, Ghoshhajra BB, Walker CM, Beache GM, Berry MF, Colletti PM, Davis AM, Hsu JY, Khosa F, Kicska GA, Kligerman SJ, Litmanovich D, Maroules CD, Meyersohn N, Syed MA, Tong BC, Villines TC, Wann S, Wolf SJ, Kanne JP, Abbara S. ACR Appropriateness Criteria® Blunt Chest Trauma-Suspected Cardiac Injury. J Am Coll Radiol 2020; 17:S380-S390. [PMID: 33153551 DOI: 10.1016/j.jacr.2020.09.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 09/01/2020] [Indexed: 12/20/2022]
Abstract
Blunt cardiac injuries range from myocardial concussion (commotio cordis) leading to fatal ventricular arrhythmias to myocardial contusion, cardiac chamber rupture, septal rupture, pericardial rupture, and valvular injuries. Blunt injuries account for one-fourth of the traumatic deaths in the United States. Chest radiography, transthoracic echocardiography, CT chest with and without contrast, and CT angiography are usually appropriate as the initial examination in patients with suspected blunt cardiac injury who are both hemodynamically stable and unstable. Transesophageal echocardiography and CT heart may be appropriate as examination in patients with suspected blunt cardiac injuries. This publication of blunt chest trauma-suspected cardiac injuries summarizes the literature and makes recommendations for imaging based on the available data and expert opinion. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.
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Affiliation(s)
| | | | | | | | | | - Garth M Beache
- University of Louisville School of Medicine, Louisville, Kentucky
| | - Mark F Berry
- Stanford University Medical Center, Stanford, California; The Society of Thoracic Surgeons
| | | | - Andrew M Davis
- The University of Chicago Medical Center, Chicago, Illinois; American College of Physicians
| | - Joe Y Hsu
- Kaiser Permanente, Los Angeles, California
| | - Faisal Khosa
- Vancouver General Hospital, Vancouver, British Columbia, Canada
| | | | | | | | | | | | - Mushabbar A Syed
- Stritch School of Medicine Loyola University Chicago, Maywood, Illinois; Society for Cardiovascular Magnetic Resonance
| | - Betty C Tong
- Duke University School of Medicine, Durham, North Carolina; The Society of Thoracic Surgeons
| | - Todd C Villines
- University of Virginia Health Center, Charlottesville, Virginia; Society of Cardiovascular Computed Tomography
| | - Samuel Wann
- Wisconsin Heart Hospital, Milwaukee, Wisconsin; Nuclear cardiology expert
| | - Stephen J Wolf
- Denver Health MC/UPI, Denver, Colorado; American College of Emergency Physicians
| | - Jeffrey P Kanne
- Specialty Chair, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Suhny Abbara
- Specialty Chair, UT Southwestern Medical Center, Dallas, Texas
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Abstract
PURPOSE Over the past 10 years, successful ultrasound integration into medical education has resulted in 8 residencies and 52 undergraduate medical schools requiring ultrasound training for graduation. Physician assistants (PAs) are trained in the medical model, yet very little is known about the integration of ultrasound into their curricula. This study examined how ultrasound is used, if at all, in the PA education curricula. METHODS Physician assistant program directors (PDs) were sent a survey addressing ultrasound integration into their curricula. Questions focused on the use of ultrasound to teach didactic courses and on inclusion of point-of-care ultrasound (POCUS) scanning skills as an adjunct to the physical examination. The survey also asked about students' feelings toward ultrasound integration into the curricula. RESULTS Investigators contacted 201 PDs, and 107 (53.2%) PDs responded. Twenty-five of the respondents (23.4%) reported using ultrasound in the basic sciences. The top 3 reasons for not including ultrasound in preclinical courses were no ultrasound machine, expense, and no faculty trained in ultrasound. Seventy-three of the respondents (68.2%) thought that POCUS scanning skills should be included in the curriculum. More than 83% felt that faculty or adjunct faculty should teach those skills. CONCLUSION This survey demonstrated that there is great interest in integrating ultrasound into the PA curriculum but that many challenges inhibit implementation. Lack of access to ultrasound machines and to trained faculty are the biggest challenges to integrating ultrasound into the PA curriculum. Physician assistant programs face content and competency challenges similar to those that medical schools face, as well as several challenges that are unique to PA education. Future research is needed to address these issues.
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Baratloo A, Bagheri-Hariri S, Bahreini M, Farshidmehr P, Barazandeh S, Babaniamansour S, Aliniagerdroudbari E. The effect of extended-focused assessment with sonography in trauma results on clinical judgment accuracy of the physicians managing patients with blunt thoracoabdominal trauma. ARCHIVES OF TRAUMA RESEARCH 2019. [DOI: 10.4103/atr.atr_57_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Valle-Alonso J, Fonseca del Pozo F, Aguayo-López M, Pedraza J, Rosa-Úbeda F, López- Sánchez A. Transitory electrocardiographic abnormalities following blunt cardiac trauma: Case report and literature review. REVISTA MÉDICA DEL HOSPITAL GENERAL DE MÉXICO 2018. [DOI: 10.1016/j.hgmx.2016.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Pershad J, Taylor A, Hall MK, Klimo P. Imaging Strategies for Suspected Acute Cranial Shunt Failure: A Cost-Effectiveness Analysis. Pediatrics 2017; 140:peds.2016-4263. [PMID: 28771407 DOI: 10.1542/peds.2016-4263] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/23/2017] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES We compared cost-effectiveness of cranial computed tomography (CT), fast sequence magnetic resonance imaging (fsMRI), and ultrasonography measurement of optic nerve sheath diameter (ONSD) for suspected acute shunt failure from the perspective of a health care organization. METHODS We modeled 4 diagnostic imaging strategies: (1) CT scan, (2) fsMRI, (3) screening ONSD by using point of care ultrasound (POCUS) first, combined with CT, and (4) screening ONSD by using POCUS first, combined with fsMRI. All patients received an initial plain radiographic shunt series (SS). Short- and long-term costs of radiation-induced cancer were assessed with a Markov model. Effectiveness was measured as quality-adjusted life-years. Utilities and inputs for clinical variables were obtained from published literature. Sensitivity analyses were performed to evaluate the effects of parameter uncertainty. RESULTS At a previous probability of shunt failure of 30%, a screening POCUS in patients with a normal SS was the most cost-effective. For children with abnormal SS or ONSD measurement, fsMRI was the preferred option over CT. Performing fsMRI on all patients would cost $269 770 to gain 1 additional quality-adjusted life-year compared with POCUS. An imaging pathway that involves CT alone was dominated by ONSD and fsMRI because it was more expensive and less effective. CONCLUSIONS In children with low pretest probability of cranial shunt failure, an ultrasonographic measurement of ONSD is the preferred initial screening test. fsMRI is the more cost-effective, definitive imaging test when compared with cranial CT.
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Affiliation(s)
- Jay Pershad
- Departments of Pediatrics and .,Emergency Medicine, Le Bonheur Children's Hospital, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Andrew Taylor
- Department of Emergency Medicine, Yale School of Medicine, New Haven, Connecticut
| | - M Kennedy Hall
- Division of Emergency Medicine, University of Washington School of Medicine, Seattle, Washington; and
| | - Paul Klimo
- Neurosurgery, University of Tennessee Health Science Center, Memphis, Tennessee.,Semmes-Murphey Neurologic & Spine Institute, Memphis, Tennessee
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