1
|
Naydenska S, Grudkov K, Petrova D, Zlatareva D, Radoslav B, Krasimirova D, Pencheva V. Diagnostic value of hybrid perfusion SPECT/CT and CTPA for detection of pulmonary embolism. BIOTECHNOL BIOTEC EQ 2023. [DOI: 10.1080/13102818.2022.2153081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Affiliation(s)
- Sevda Naydenska
- Department of Propedeutics of Internal Diseases, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Konstantin Grudkov
- Department of Surgery, Faculty of Medicine, Sofia University St. Kliment, Sofia, Bulgaria
| | - Daniela Petrova
- Department of Propedeutics of Internal Diseases, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Dora Zlatareva
- Department of Diagnostic Imaging, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Bilyukov Radoslav
- Department of Propedeutics of Internal Diseases, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Daniela Krasimirova
- Department of Propedeutics of Internal Diseases, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Ventsislava Pencheva
- Department of Propedeutics of Internal Diseases, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| |
Collapse
|
2
|
Palm V, Heye T, Molwitz I, von Stackelberg O, Kauczor HU, Schreyer AG. Sustainability and Climate Protection in Radiology - An Overview. ROFO-FORTSCHR RONTG 2023; 195:981-988. [PMID: 37348529 DOI: 10.1055/a-2093-4177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
BACKGROUND Sustainability is becoming increasingly important in radiology. Besides climate protection - economic, ecological, and social aspects are integral elements of sustainability. An overview of the scientific background of the sustainability and environmental impact of radiology as well as possibilities for future concepts for more sustainable diagnostic and interventional radiology are presented below.The three elements of sustainability:1. EcologyWith an annually increasing number of tomographic images, Germany is in one of the leading positions worldwide in a per capita comparison. The energy consumption of an MRI system is comparable to 26 four-person households annually. CT and MRI together make a significant contribution to the overall energy consumption of a hospital. In particular, the energy consumption in the idle or inactive state is responsible for a relevant proportion.2. EconomyA critical assessment of the indications for radiological imaging is important not only because of radiation protection, but also in terms of sustainability and "value-based radiology". As part of the "Choosing Wisely" initiative, a total of 600 recommendations for avoiding unnecessary examinations were compiled from various medical societies, including specific indications in radiological diagnostics.3. Social SustainabilityThe alignment of radiology to the needs of patients and referring physicians is a core aspect of the social component of sustainability. Likewise, ensuring employee loyalty by supporting and maintaining motivation, well-being, and job satisfaction is an essential aspect of social sustainability. In addition, sustainable concepts are of relevance in teaching and research, such as the educational curriculum for residents in radiology, RADUCATION or the recommendations of the International Committee of Medical Journal Editors. KEY POINTS · Sustainability comprises three pillars: economy, ecology and the social component.. · Radiologies have a high optimization potential due to a significant demand of these resources.. · A dialogue between medicine, politics and industry is necessary for a sustainable radiology.. · The discourse, knowledge transfer and public communication of recommendations are part of the sustainability network of the German Roentgen Society (DRG).. CITATION FORMAT · Palm V, Heye T, Molwitz I et al. Sustainability and Climate Protection in Radiology - An Overview. Fortschr Röntgenstr 2023; 195: 981 - 988.
Collapse
Affiliation(s)
- Viktoria Palm
- Clinic for Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
- Translational Lung Research Center (TLRC), German Center for Lung Research (DZL), Heidelberg University, Heidelberg, Germany
- Diagnostic and Interventional Radiology with Nuclear Medicine, Thoraxklinik am Universitätsklinikum Heidelberg, Germany
| | - Tobias Heye
- Department of Radiology and Nuclear Medicine, University Hospital Basel, Switzerland
| | - Isabel Molwitz
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Oyunbileg von Stackelberg
- Clinic for Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
- Translational Lung Research Center (TLRC), German Center for Lung Research (DZL), Heidelberg University, Heidelberg, Germany
- Diagnostic and Interventional Radiology with Nuclear Medicine, Thoraxklinik am Universitätsklinikum Heidelberg, Germany
| | - Hans-Ulrich Kauczor
- Clinic for Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
- Translational Lung Research Center (TLRC), German Center for Lung Research (DZL), Heidelberg University, Heidelberg, Germany
- Diagnostic and Interventional Radiology with Nuclear Medicine, Thoraxklinik am Universitätsklinikum Heidelberg, Germany
| | - Andreas G Schreyer
- Institute for Diagnostic and Interventional Radiology, Brandenburg Medical School Theodor Fontane, Brandenburg a. d. Havel, Germany
| |
Collapse
|
3
|
Falster C, Hellfritzsch M, Gaist TA, Brabrand M, Bhatnagar R, Nybo M, Andersen NH, Egholm G. Comparison of international guideline recommendations for the diagnosis of pulmonary embolism. Lancet Haematol 2023; 10:e922-e935. [PMID: 37804848 DOI: 10.1016/s2352-3026(23)00181-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 06/09/2023] [Accepted: 06/16/2023] [Indexed: 10/09/2023]
Abstract
Pulmonary embolism is one of the leading causes of death due to cardiovascular disease. Timely diagnosis is crucial, but challenging, as the clinical presentation of pulmonary embolism is unspecific and easily mistaken for other common medical emergencies. Clinical prediction rules and D-dimer measurement allow stratification of patients into groups of expected prevalence and are key elements in adequate selection of patients for diagnostic imaging; however, the strengths and weaknesses of the multiple proposed prediction rules, when to measure D-dimer, and which cutoff to apply might be elusive to a significant proportion of physicians. 13 international guidelines authored by medical societies or expert author groups provide recommendations on facets of the diagnostic investigations in suspected pulmonary embolism, some of which are hallmarked by pronounced heterogeneity. This Review summarises key recommendations of each guideline, considers the most recent evidence on the topic, compares guideline recommendations on each facet of the diagnosis of pulmonary embolism, and provides a synthesis on the most common recommendations.
Collapse
Affiliation(s)
- Casper Falster
- Odense Respiratory Research Unit, University of Southern Denmark, Odense, Denmark; Department of Respiratory Medicine, Odense University Hospital, Odense, Denmark.
| | - Maja Hellfritzsch
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Danish Society of Thrombosis and Hemostasis, Roskilde, Denmark
| | | | - Mikkel Brabrand
- Department of Emergency Medicine, Odense University Hospital, Odense, Denmark; Accident and Emergency Medicine Academic Unit, Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Rahul Bhatnagar
- Respiratory Medicine Department, North Bristol National Health Service Trust, Southmead Hospital, Bristol, UK; Academic Respiratory Unit, University of Bristol, Bristol, UK
| | - Mads Nybo
- Department of Clinical Biochemistry, Odense University Hospital, Odense, Denmark
| | | | - Gro Egholm
- Department of Cardiology, Odense University Hospital, Odense, Denmark
| |
Collapse
|
4
|
Soliman-Aboumarie H, Joshi SS, Cameli M, Michalski B, Manka R, Haugaa K, Demirkiran A, Podlesnikar T, Jurcut R, Muraru D, Badano LP, Dweck MR. EACVI survey on the multi-modality imaging assessment of the right heart. Eur Heart J Cardiovasc Imaging 2022; 23:1417-1422. [PMID: 36093580 DOI: 10.1093/ehjci/jeac183] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 08/19/2022] [Indexed: 11/12/2022] Open
Abstract
AIMS The European Association of Cardiovascular Imaging (EACVI) Scientific Initiatives Committee performed a global survey to evaluate the use of different cardiac imaging modalities for the evaluation of the right heart. METHODS AND RESULTS Delegates from 250 EACVI registered centres were invited to participate in a survey which was also advertised on the EACVI bulletin and on social media. One hundred and thirty-eight respondents from 46 countries across the world responded to the survey. Most respondents worked in tertiary centres (79%) and echocardiography was reported as the commonest imaging modality used to assess the right ventricle (RV). The majority of survey participants (78%) included RV size and function in >90% of their echocardiographic reports. The RV basal diameter obtained from the apical four-chamber view and the tricuspid annular plane systolic excursion were the commonest parameters used for the echocardiographic assessment of RV size and function as reported by 82 and 97% respondents, respectively. Survey participants reported arrhythmogenic cardiomyopathy as the commonest condition (88%) where cardiac magentic resonance (CMR) imaging was used for right heart assessment. Only 52% respondents included RV volumetric and ejection fraction assessments routinely in their CMR reports, while 30% of respondents included these parameters only when RV pathology was suspected. Finally, 73% of the respondents reported pulmonary hypertension as the commonest condition where right heart catheterization was performed. CONCLUSION Echocardiography remains the most frequently used imaging modality for the evaluation of the right heart, while the use of other imaging techniques, most notably CMR, is increasing.
Collapse
Affiliation(s)
- Hatem Soliman-Aboumarie
- Department of Anaesthetics and Critical Care, Harefield Hospital, Royal Brompton and Hospitals, Guy's and St Thomas NHS Foundation Trust, London, UK
- School of Cardiovascular Medicine and Sciences, King's College London, London, UK
| | - Shruti S Joshi
- BHF Centre for Cardiovascular Science, University of Edinburgh, 49 Little France Crescent, Edinburgh EH16 4SB, UK
| | - Matteo Cameli
- Division of Cardiology, University of Siena, Siena, Italy
| | - Blazej Michalski
- Department of Cardiology, Medical University of Lodz, Lodz, Poland
| | - Robert Manka
- Department of Cardiology, University Heart Center, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
| | - Kristina Haugaa
- ProCardio Center for Innovation, Department of Cardiology, Oslo University Hospital, Rikshospitalet, Postboks 4950 Nydalen, 0424 Oslo, Norway
- Norway and Faculty of Medicine, Huddinge Karolinska Institute and Cardiovascular Division, Karolinska University Hospital, Stockholm, Sweden
| | - Ahmet Demirkiran
- Department of Cardiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
| | - Tomaz Podlesnikar
- Department of Cardiac Surgery, University Medical Centre Maribor, Maribor, Slovenia
- Department of Cardiology, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Ruxandra Jurcut
- Department of Cardiology, Emergency Institute for Cardiovascular Diseases, 'Carol Davila' University of Medicine and Pharmacy, Bucharest, Romania
| | - Denisa Muraru
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
- Department of Cardiology, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Luigi P Badano
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
- Department of Cardiology, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Marc R Dweck
- BHF Centre for Cardiovascular Science, University of Edinburgh, 49 Little France Crescent, Edinburgh EH16 4SB, UK
| |
Collapse
|
5
|
Vivan MA, Rigatti B, da Cunha SV, Frison GC, Antoniazzi LQ, de Oliveira PHK, Oliveira JPS, Fontanari C, Seligman BGS, Seligman R. Pulmonary embolism in patients with COVID-19 and D-dimer diagnostic value: A retrospective study. Braz J Infect Dis 2022; 26:102702. [PMID: 36096159 PMCID: PMC9436892 DOI: 10.1016/j.bjid.2022.102702] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/25/2022] [Accepted: 08/14/2022] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND D-dimer levels are significantly higher in COVID-19 patients with Pulmonary Thromboembolism (PTE) as compared to those without PTE, but its clinical utility is still uncertain. PURPOSE To determine the D-dimer performance for ruling out PTE in patients with COVID-19. We also assessed clinical and laboratory factors associated with the presence of PTE on CT Pulmonary Angiogram (CTPA). METHODS Retrospective study involving all patients who presented at a tertiary care hospital from March 2020 to May 2021 with severe acute respiratory syndrome from COVID-19, who underwent CTPA and had D-dimer collected within 48 hours from CTPA. The D-dimer ability to classify patients with or without PTE according to CTPA was evaluated. RESULTS A total of 697 patients [382 (54.8%) men; mean (SD) age, 59 (20.5) years] were included, of which 71.5% required intensive care admission, 32.4% had PTE, and 35.6% died during hospitalization. PTE was independently associated with mortality [42.5% vs. 32.3%; p = 0.038]. D-dimer levels were higher in patients with PTE [9.1 (3.9; 20) vs. 2.3 (1.2; 5.1); p < 0.001]. Using the D-dimer cutoff of 0.5 μg/mL or above, sensitivity was 98.2% and specificity 5.7%. The 0.3 μg/mL threshold was associated with 100% of sensitivity for the presence of PTE, with which 99.1% of patients had increased values. ROC curve AUC was 0.77, demonstrating moderate discriminative power of D-dimers to detect PTE. CONCLUSIONS D-dimer levels are higher among COVID-19 hospitalized patients with PTE as compared to those without PTE and have moderate discriminative power to detect PTE, but its use to exclude PTE in this population may have limited clinical utility.
Collapse
Affiliation(s)
- Manoela Astolfi Vivan
- Universidade Federal de Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Cardiologia, Porto Alegre, RS, Brazil; Hospital de Clínicas de Porto Alegre (HCPA), Divisão de Medicina Interna, Porto Alegre, RS, Brazil.
| | - Brenda Rigatti
- Hospital de Clínicas de Porto Alegre (HCPA), Divisão de Medicina Interna, Porto Alegre, RS, Brazil
| | | | | | | | | | | | - Clara Fontanari
- Universidade de São Paulo (USP), Faculdade de Medicina de Ribeirão Preto, Ribeirão Preto, SP, Brazil
| | - Beatriz Graeff Santos Seligman
- Hospital de Clínicas de Porto Alegre (HCPA), Divisão de Medicina Interna, Porto Alegre, RS, Brazil; Universidade Federal de Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Renato Seligman
- Hospital de Clínicas de Porto Alegre (HCPA), Divisão de Medicina Interna, Porto Alegre, RS, Brazil; Universidade Federal de Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| |
Collapse
|
6
|
Chrysikos S, Papaioannou O, Karampitsakos T, Tavernaraki K, Thanou I, Filippousis P, Anyfanti M, Hillas G, Tzouvelekis A, Thanos L, Dimakou K. Diagnostic Accuracy of Multiple D-Dimer Cutoff Thresholds and Other Clinically Applicable Biomarkers for the Detection and Radiographic Evaluation of Pulmonary Embolism. Adv Respir Med 2022; 90:300-309. [PMID: 36004959 PMCID: PMC9717334 DOI: 10.3390/arm90040039] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/08/2022] [Accepted: 07/29/2022] [Indexed: 11/16/2022]
Abstract
Background: Diagnostic work-up of pulmonary embolism (PE) remains a challenge. Methods: We retrospectively studied all patients referred for computed tomography pulmonary angiography (CTPA) with suspicion of PE during a 12-month period (2018). The diagnostic accuracy of different D-dimer (Dd) cutoff thresholds for ruling out PE was evaluated. Furthermore, the association of Dd and red cell distribution width (RDW) with embolus location, CTPA findings, and patient outcome was recorded. Results: One thousand seventeen (n = 1017) patients were finally analyzed (mean age: 64.6 years (SD = 11.8), males: 549 (54%)). PE incidence was 18.7%. Central and bilateral embolism was present in 44.7% and 59.5%, respectively. Sensitivity and specificity for conventional and age-adjusted Dd cutoff was 98.2%, 7.9%, and 98.2%, 13.1%, respectively. A cutoff threshold (2.1 mg/L) with the best (64.4%) specificity was identified based on Receiver Operating Characteristics analysis. Moreover, a novel proposed Dd cutoff (0.74 mg/L) emerged with increased specificity (20.5%) and equal sensitivity (97%) compared to 0.5 mg/L, characterized by concurrent reduction (17.2%) in the number of performed CTPAs. Consolidation/atelectasis and unilateral pleural effusion were significantly associated with PE (p < 0.05, respectively). Patients with consolidation/atelectasis or intrapulmonary nodule(s)/mass on CTPA exhibited significantly greater median Dd values compared to patients without the aforementioned findings (2.34, (IQR 1.29−4.22) vs. 1.59, (IQR 0.81−2.96), and 2.39, (IQR 1.45−4.45) vs. 1.66, (IQR 0.84−3.12), p < 0.001, respectively). RDW was significantly greater in patients who died during hospitalization (p = 0.012). Conclusions: Age-adjusted Dd increased diagnostic accuracy of Dd testing without significantly decreasing the need for imaging. The proposed Dd value (0.74 mg/L) showed promise towards reducing considerably the need of CTPA. Multiple radiographic findings have been associated with increased Dd values in our study.
Collapse
Affiliation(s)
- Serafeim Chrysikos
- 5th Respiratory Medicine Department, “Sotiria” Chest Diseases Hospital, 11527 Athens, Greece
- Correspondence:
| | - Ourania Papaioannou
- Department of Respiratory Medicine, University Hospital of Patras, 26504 Patras, Greece
| | | | - Kyriaki Tavernaraki
- Department of Medical Imaging and Interventional Radiology, “Sotiria” Chest Diseases Hospital, 11527 Athens, Greece
| | - Ioanna Thanou
- Department of Medical Imaging and Interventional Radiology, “Sotiria” Chest Diseases Hospital, 11527 Athens, Greece
| | - Petros Filippousis
- Department of Medical Imaging and Interventional Radiology, “Sotiria” Chest Diseases Hospital, 11527 Athens, Greece
| | - Maria Anyfanti
- ICU, G Gennimatas, General Hospital, 11527 Athens, Greece
| | - Georgios Hillas
- 5th Respiratory Medicine Department, “Sotiria” Chest Diseases Hospital, 11527 Athens, Greece
| | - Argyrios Tzouvelekis
- Department of Respiratory Medicine, University Hospital of Patras, 26504 Patras, Greece
| | - Loukas Thanos
- Department of Medical Imaging and Interventional Radiology, “Sotiria” Chest Diseases Hospital, 11527 Athens, Greece
| | - Katerina Dimakou
- 5th Respiratory Medicine Department, “Sotiria” Chest Diseases Hospital, 11527 Athens, Greece
| |
Collapse
|
7
|
Albricker ACL, Freire CMV, Santos SND, Alcantara MLD, Saleh MH, Cantisano AL, Teodoro JAR, Porto CLL, Amaral SID, Veloso OCG, Petisco ACGP, Barros FS, Barros MVLD, Souza AJD, Sobreira ML, Miranda RBD, Moraes DD, Verrastro CGY, Mançano AD, Lima RDSL, Muglia VF, Matushita CS, Lopes RW, Coutinho AMN, Pianta DB, Santos AASMDD, Naves BDL, Vieira MLC, Rochitte CE. Diretriz Conjunta sobre Tromboembolismo Venoso – 2022. Arq Bras Cardiol 2022; 118:797-857. [PMID: 35508060 PMCID: PMC9007000 DOI: 10.36660/abc.20220213] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
|
8
|
Yu H, Wang H, Gao Z, Chen G, Song H, Yan S, Luan X, Song P. A Heart Rate-Dependent Protocol of "One-Stop" Computed Tomography Angiography of Coronary Combined with Pulmonary Arteries Reduces the Dosages of Contrast Agent. Dose Response 2022; 20:15593258221107906. [PMID: 35783237 PMCID: PMC9247373 DOI: 10.1177/15593258221107906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/09/2022] [Accepted: 05/31/2022] [Indexed: 11/16/2022]
Abstract
Background: The personalized, heart rate-dependent computed tomography angiography (CTA)
protocol can reduce the use of contrast medium (CM) and the radiation dose.
This is especially beneficial for patients with CTA of coronary combined
with pulmonary arteries. Purpose: To evaluate the feasibility of low CM in one-stop coronary and pulmonary
arterial CTA tailored by patients’ heart rate. Material and Methods: 94 patients set to undergo CTA of coronary combined with pulmonary arteries
with one-stop scans. Patients were prospectively randomized into two groups:
For group A (n = 47), the timing of the scans was determined according to
the patient’s HR using 30 mL CM; For group B (n = 47), in which the routine
bolus tracking was applied by setting the ascending aortic threshold of 80
HU with 70 mL CM, scans were performed simultaneously. Results: Compared with group B, group A had slightly higher computed tomography (CT)
value and image quality of pulmonary artery (CT value: group A 484.7HU;
group B 457.9HU; t = 2.446, P = .016; image quality: χ2 =
8.292, P = .016), but in coronary artery wasn’t
statistically different between two groups(image quality: χ2 = 2.516,
P = .642). Conclusion: The heart rate-dependent CM injection protocol can greatly reduce the use of
CM, simplify the work-flow, and may obtain comparable or even better image
quality compared with the routine bolus tracking.
Collapse
Affiliation(s)
- Hairong Yu
- Department of Radiology, Central Hospital Affiliated to
Shandong First Medical University, Jinan City, China
| | - Hui Wang
- Department of Radiology, Central Hospital Affiliated to
Shandong First Medical University, Jinan City, China
| | - Zhen Gao
- Department of Radiology, Central Hospital Affiliated to
Shandong First Medical University, Jinan City, China
| | - Guoyue Chen
- Department of Radiology, Central Hospital Affiliated to
Shandong First Medical University, Jinan City, China
| | - Hao Song
- The Institute for Tissue
Engineering and Regenerative Medicine, The Liaocheng University/Liaocheng
People’s Hospital, Liaocheng, China
| | - Shihao Yan
- Department of Radiology, Central Hospital Affiliated to
Shandong First Medical University, Jinan City, China
| | | | - Peiji Song
- Department of Radiology, Central Hospital Affiliated to
Shandong First Medical University, Jinan City, China
- Department of Radiology, Jinan
Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, China
- Peiji Song, Department of Radiology, Jinan
Central Hospital, Cheeloo College of Medicine, Shandong University, No.105,
Jiefang Road, Jinan City 250013, China; Department of Radiology, Central
Hospital Affiliated to Shandong First Medical University, No.105, Jiefang Road,
Jinan City 250013, China.
| |
Collapse
|
9
|
Zhang NJ, Rameau P, Julemis M, Liu Y, Solomon J, Khan S, McGinn T, Richardson S. Automated Pulmonary Embolism Risk Assessment Using the Wells Criteria: Validation Study. JMIR Form Res 2022; 6:e32230. [PMID: 35225812 PMCID: PMC8922138 DOI: 10.2196/32230] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 12/05/2021] [Accepted: 12/27/2021] [Indexed: 01/23/2023] Open
Abstract
Background Computed tomography pulmonary angiography (CTPA) is frequently used in the emergency department (ED) for the diagnosis of pulmonary embolism (PE), while posing risk for contrast-induced nephropathy and radiation-induced malignancy. Objective We aimed to create an automated process to calculate the Wells score for pulmonary embolism for patients in the ED, which could potentially reduce unnecessary CTPA testing. Methods We designed an automated process using electronic health records data elements, including using a combinatorial keyword search method to query free-text fields, and calculated automated Wells scores for a sample of all adult ED encounters that resulted in a CTPA study for PE at 2 tertiary care hospitals in New York, over a 2-month period. To validate the automated process, the scores were compared to those derived from a 2-clinician chart review. Results A total of 202 ED encounters resulted in a completed CTPA to form the retrospective study cohort. Patients classified as “PE likely” by the automated process (126/202, 62%) had a PE prevalence of 15.9%, whereas those classified as “PE unlikely” (76/202, 38%; Wells score >4) had a PE prevalence of 7.9%. With respect to classification of the patient as “PE likely,” the automated process achieved an accuracy of 92.1% when compared with the chart review, with sensitivity, specificity, positive predictive value, and negative predictive value of 93%, 90.5%, 94.4%, and 88.2%, respectively. Conclusions This was a successful development and validation of an automated process using electronic health records data elements, including free-text fields, to classify risk for PE in ED visits.
Collapse
Affiliation(s)
| | | | | | - Yan Liu
- Northwell Health, Manhasset, NY, United States
| | | | - Sundas Khan
- Northwell Health, Manhasset, NY, United States
| | | | | |
Collapse
|
10
|
Pulmonary embolism and computed tomography angiography: Characteristic findings and technical advices. IMAGING 2021. [DOI: 10.1556/1647.2021.00050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Abstract
Pulmonary embolism (PE) is a condition due to blood clots obstructing pulmonary arteries, often related to deep venous thrombosis (DVT). PE can be responsible for acute and even life-threatening clinical situations and it may also lead to chronic sequelae such as chronic thromboembolic pulmonary hypertension (CTEPH). Signs and symptoms associated to PE may overlap those of many other diseases (e.g. chest pain, dyspnea, etc.), therefore an accurate clinical evaluation is mandatory before referring the patient to the most appropriate imaging technique. Pulmonary angiography (PA) has been traditionally considered the gold standard regarding the diagnosis of PE and it is also useful regarding the treatment of said condition. However, PA is an invasive technique, implying all the known risks concerning endovascular procedures. Nowadays, computed tomography angiography (CTA) is considered the imaging technique of choice regarding the diagnosis of PE. This technique is readily-available in most centers and it is able to provide high resolution images, although it implies the administration of ionizing radiations and iodinated contrast medium. Conventional CTA has further been improved with the use of ECG-gated protocols, aimed to reduce motion artifacts due to heartbeat and to evaluate other causes of sudden onset chest pain. Moreover, another interesting technique is dual energy computed tomography (DECT), which allows to elaborate iodine maps, allowing to detect areas of hypoperfusion due to the presence of emboli in pulmonary arteries. This review is aimed to describe the main findings related to PE with an emphasis on CTA, also discussing technical aspects concerning image acquisition protocol.
Collapse
|
11
|
Sadeghi S, Arabi Z, Moradi M, Raofi E. Diagnostic imaging to investigate pulmonary embolism in pregnancy using CT-Pulmonary angiography versus perfusion scan. JOURNAL OF RESEARCH IN MEDICAL SCIENCES 2021; 26:37. [PMID: 34484369 PMCID: PMC8384013 DOI: 10.4103/jrms.jrms_113_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 07/22/2020] [Accepted: 01/18/2021] [Indexed: 11/17/2022]
Abstract
Background: Pulmonary embolism (PE) is one of the major causes of maternal mortality; however, its diagnosis based on clinical presentation is a significant challenge; therefore, imaging is required. This study aims to determine the nondiagnostic rate of PE in pregnant women who initially undergone computed tomographic pulmonary angiography (CTPA) or perfusion scan. Materials and Methods: In this cross-sectional study, all pregnant or 6-week postpartum women with clinical suspicion of PE were evaluated and underwent CTPA or perfusion scan between March 2017 and June 2019. The nondiagnostic rate of each method was defined as the outcome of this study. Results: One hundred and eighty-two women with a clinical suspicion of PE were included, among which the initial imaging method was CTPA in 122 (67.03%) and perfusion scan in 60 (32.97%) women. The nondiagnostic imaging for CTPA was significantly lower than the perfusion scan (9 cases (7.4%) versus 25 cases (41.7%), respectively). Logistic regression assessment revealed a statistical outcome by controlling the confounders including gestational trimester at diagnosis, hypertension, ejection fraction, and tachycardia (odds ratio 15.911, 95% confidence interval: 5.177–48.897, P < 0.001). Conclusion: Based on the current study, CTPA is superior to perfusion scans to diagnose PE among pregnant or postpartum women with normal chest X-ray suspicion for PE.
Collapse
Affiliation(s)
- Somayeh Sadeghi
- Aquired Immunodeficiency Research Center, School of Medicine, Al-Zahra Hospital, Isfahan University of Medicine Sciences, Isfahan, Iran
| | - Zahra Arabi
- Department of Internal Medicine, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Maryam Moradi
- Department of Radiology, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Elham Raofi
- Department of Internal Medicine, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
12
|
Hong YJ, Shim J, Lee SM, Im DJ, Hur J. Dual-Energy CT for Pulmonary Embolism: Current and Evolving Clinical Applications. Korean J Radiol 2021; 22:1555-1568. [PMID: 34448383 PMCID: PMC8390816 DOI: 10.3348/kjr.2020.1512] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/22/2021] [Accepted: 03/19/2021] [Indexed: 12/12/2022] Open
Abstract
Pulmonary embolism (PE) is a potentially fatal disease if the diagnosis or treatment is delayed. Currently, multidetector computed tomography (MDCT) is considered the standard imaging method for diagnosing PE. Dual-energy CT (DECT) has the advantages of MDCT and can provide functional information for patients with PE. The aim of this review is to present the potential clinical applications of DECT in PE, focusing on the diagnosis and risk stratification of PE.
Collapse
Affiliation(s)
- Yoo Jin Hong
- Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jina Shim
- Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Min Lee
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Dong Jin Im
- Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jin Hur
- Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
| |
Collapse
|
13
|
Bourgioti C, Konidari M, Gourtsoyianni S, Moulopoulos LA. Imaging during pregnancy: What the radiologist needs to know. Diagn Interv Imaging 2021; 102:593-603. [PMID: 34059484 DOI: 10.1016/j.diii.2021.05.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 05/11/2021] [Accepted: 05/15/2021] [Indexed: 12/14/2022]
Abstract
During the last decades, there has been a growing demand for medical imaging in gravid women. Imaging of the pregnant woman is challenging as it involves both the mother and the fetus and, consequently, several medical, ethical, or legal considerations are likely to be raised. Theoretically, all currently available imaging modalities may be used for the evaluation of the pregnant woman; however, in practice, confusion regarding the safety of the fetus often results in unnecessary avoidance of useful diagnostic tests, especially those involving ionizing radiation. This review article is focused on the current safety guidelines and considerations regarding the use of different imaging modalities in the pregnant population; also presented is an imaging work-up for the most common medical conditions of pregnant women, with emphasis on fetal and maternal safety.
Collapse
Affiliation(s)
- Charis Bourgioti
- Department of Radiology, School of Medicine, National and Kapodistrian University of Athens, Aretaieion Hospital, 76, Vassilisis Sofias Avenue, Athens 11528, Greece.
| | - Marianna Konidari
- Department of Radiology, School of Medicine, National and Kapodistrian University of Athens, Aretaieion Hospital, 76, Vassilisis Sofias Avenue, Athens 11528, Greece
| | - Sofia Gourtsoyianni
- Department of Radiology, School of Medicine, National and Kapodistrian University of Athens, Aretaieion Hospital, 76, Vassilisis Sofias Avenue, Athens 11528, Greece
| | - Lia Angela Moulopoulos
- Department of Radiology, School of Medicine, National and Kapodistrian University of Athens, Aretaieion Hospital, 76, Vassilisis Sofias Avenue, Athens 11528, Greece
| |
Collapse
|
14
|
Liu Y, Xie M, Gao X, Liu R. Predictive Value of Circulating microRNA-134 Levels for Early Diagnosis of Acute Pulmonary Embolism: Meta-analysis. J Cardiovasc Transl Res 2021; 14:744-753. [PMID: 33409960 DOI: 10.1007/s12265-020-10087-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 11/24/2020] [Indexed: 02/01/2023]
Abstract
Acute pulmonary embolism (APE) is a common sudden venous thromboembolism with high rates of morbidity and mortality. Several studies have concluded that microRNA-134 could be a potential biomarker for APE. However, the sensitivity of these studies varies widely. This study aimed to evaluate the diagnostic value of circulating microRNA-134 levels for APE. Four databases were searched to retrieve articles focusing on microRNA-134 detection in APE diagnosis. The Quality Assessment of Diagnostic Accuracy Studies-2 was used to evaluate the quality of the included literature. This meta-analysis included seven studies and 383 subjects. The microRNA-134 levels in APE patients were higher than those in controls (SMD = 2.84, z = 3.69, p < 0.001). The pooled sensitivity, specificity, and diagnostic odds ratio were 0.86 (0.72-0.94), 0.75 (0.66-0.82), and 19 (7-51), respectively. The positive and negative likelihood ratios were 3.4 (2.4-4.8) and 0.18 (0.08-0.40), respectively. The area under the summary receiver operating characteristic curve was 0.81 (0.77-0.84). Circulating microRNA-134 may be a new biomarker for the diagnosis of APE, but more tests and studies are needed to further explore and prove this. Trial registration number: PROSPERO registration #CRD42020184072.
Collapse
Affiliation(s)
- Yu Liu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, 210009, China
| | - Ming Xie
- North China Petroleum Bureau General Hospital, Renqiu, 062550, China
| | - Xiaoli Gao
- North China Petroleum Bureau General Hospital, Renqiu, 062550, China.
| | - Ran Liu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, 210009, China.
| |
Collapse
|
15
|
Sub-segmental pulmonary emboli as a marker of CT-pulmonary angiogram overuse in a single-center retrospective cohort study: A dimer a dozen? Thromb Res 2020; 196:463-465. [PMID: 33065412 DOI: 10.1016/j.thromres.2020.09.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 11/21/2022]
|
16
|
Kosmala A, Gruschwitz P, Veldhoen S, Weng AM, Krauss B, Bley TA, Petritsch B. Dual-energy CT angiography in suspected pulmonary embolism: influence of injection protocols on image quality and perfused blood volume. Int J Cardiovasc Imaging 2020; 36:2051-2059. [PMID: 32506286 PMCID: PMC8692293 DOI: 10.1007/s10554-020-01911-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/02/2020] [Indexed: 12/16/2022]
Abstract
To compare intravenous contrast material (CM) injection protocols for dual-energy CT pulmonary angiography (CTPA) in patients with suspected acute pulmonary embolism with regard to image quality and pulmonary perfused blood volume (PBV) values. A total of 198 studies performed with four CM injection protocols varying in CM volume and iodine delivery rates (IDR) were retrospectively included: (A) 60 ml at 5 ml/s (IDR = 1.75gI/s), (B) 50 ml at 5 ml/s (IDR = 1.75gI/s), (C) 50 ml at 4 ml/s (IDR = 1.40gI/s), (D) 40 ml at 3 ml/s (IDR = 1.05gI/s). Image quality and PBV values at different resolution settings were compared. Pulmonary arterial tract attenuation was highest for protocol A (397 ± 110 HU; p vs. B = 0.13; vs. C = 0.02; vs. D < 0.001). CTPA image quality of protocol A was rated superior compared to protocols B and D by reader 1 (p = 0.01; < 0.001), and superior to protocols B, C and D by reader 2 (p < 0.001; 0.02; < 0.001). Otherwise, there were no significant differences in CTPA quality ratings. Subjective iodine map ratings did not vary significantly between protocols A, B, and C. Both readers rated protocol D inferior to all other protocols (p < 0.05). PBV values did not vary significantly between protocols A and B at resolution settings of 1, 4 and 10 (p = 0.10; 0.10; 0.09), while otherwise PBV values displayed a decreasing trend from protocol A to D (p < 0.05). Higher CM volume and IDR are associated with superior CTPA and iodine map quality and higher absolute PBV values.
Collapse
Affiliation(s)
- Aleksander Kosmala
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany.
| | - Philipp Gruschwitz
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
| | - Simon Veldhoen
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
| | - Andreas Max Weng
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
| | - Bernhard Krauss
- Siemens Healthcare GmbH, Research and Development, Forchheim, Germany
| | - Thorsten Alexander Bley
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
| | - Bernhard Petritsch
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
| |
Collapse
|
17
|
Liu D, Cai X, Che X, Ma Y, Fu Y, Li L. Visibility and image quality of peripheral pulmonary arteries in pulmonary embolism patients using free-breathing combined with a high-threshold bolus-triggering technique in CT pulmonary angiography. J Int Med Res 2020; 48:300060520939326. [PMID: 32814489 PMCID: PMC7444127 DOI: 10.1177/0300060520939326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Objective To investigate the visibility of peripheral pulmonary arteries by computed tomography pulmonary angiography (CTPA) and image quality using a free-breathing combined with a high-threshold bolus triggering technique and to explore the feasibility of this technique in pulmonary embolism (PE) patients who cannot hold their breath. Methods Patients with suspected PE who underwent CTPA (n=240) were randomly assigned to two groups: free-breathing (n=120) or breath-holding (n=120). Results The mean scanning time or visible pulmonary artery distal branches were not different between the groups. Mean CT main pulmonary artery (MPA) values, apical segment (S1), and posterior basal segment (S10) in the free-breathing group were higher compared with the breath-holding group. The subjective image quality score in the free-breathing group was higher compared with the breath-holding group. In the free-breathing group, no respiratory artifact was observed. In the breath-holding group, obvious respiratory artifacts were caused by severe chronic obstructive pulmonary disease (COPD), dyspnea, or other diseases that preclude patients from holding their breath. Conclusion The free-breathing mode CTPA combined with a high-threshold bolus triggering technique can provide high quality images with a lower incidence of respiratory and cardiac motion artifacts, which is especially valuable for patients who cannot hold their breath.
Collapse
Affiliation(s)
- Daliang Liu
- Department of Radiology, Liaocheng People's Hospital, Liaocheng, Shandong, P. R. China
| | - Xiansheng Cai
- Department of Radiology, Liaocheng People's Hospital, Liaocheng, Shandong, P. R. China
| | - Xiaoshuang Che
- Department of Radiology, Liaocheng People's Hospital, Liaocheng, Shandong, P. R. China
| | - Yong Ma
- Department of Radiology, Liaocheng People's Hospital, Liaocheng, Shandong, P. R. China
| | - Yucun Fu
- Department of Radiology, Liaocheng People's Hospital, Liaocheng, Shandong, P. R. China
| | - Lin Li
- Department of Radiology, Liaocheng People's Hospital, Liaocheng, Shandong, P. R. China
| |
Collapse
|
18
|
Higher Imaging Yield When Clinical Decision Support Is Used. J Am Coll Radiol 2019; 17:496-503. [PMID: 31899178 DOI: 10.1016/j.jacr.2019.11.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 11/05/2019] [Accepted: 11/20/2019] [Indexed: 01/16/2023]
Abstract
OBJECTIVE Increased utilization of CT pulmonary angiography (CTPA) for the evaluation of pulmonary embolism has been associated with decreasing diagnostic yields and rising concerns about the harms of unnecessary testing. The objective of this study was to determine whether clinical decision support (CDS) use would be associated with increased imaging yields after controlling for selection bias. METHODS We performed a retrospective cohort study in the emergency departments of two tertiary care hospitals of all CTPAs performed between August 2015 and September 2018. Providers ordering a CTPA are routed to an optional CDS tool, which allows them to use Wells' Criteria for pulmonary embolism. After propensity score matching, CTPA yield was calculated for the CDS-use and CDS-dismissal groups and stratified by provider type. RESULTS A total of 7,367 CTPAs were ordered during the study period. Of those, providers used the CDS tool in 2,568 (35%) cases and did not use the tool in 4,799 (65%) of cases. After propensity score matching, CTPA yield was 11.99% in the CDS-use group and 8.70% in the CDS-dismissal group (P < .001). Attending physicians, residents, and physician assistant CDS users demonstrated a 56.5% (P = .006), 38.7% (P = .01), and 16.7% (P = .03) increased yield compared with those who dismissed the tool, respectively. DISCUSSION Diagnostic yield was 38% higher for CTPAs when the provider used the CDS tool, after controlling for selection bias. Yields were higher for every provider type. Further research is needed to discover successful strategies to increase provider use of these important tools.
Collapse
|
19
|
Kruger PC, Eikelboom JW, Douketis JD, Hankey GJ. Pulmonary embolism: update on diagnosis and management. Med J Aust 2019; 211:82-87. [PMID: 31216072 DOI: 10.5694/mja2.50233] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Pulmonary embolism (PE) is a potentially life-threatening condition, mandating urgent diagnosis and treatment. The symptoms of PE may be non-specific; diagnosis therefore relies on a clinical assessment and objective diagnostic testing. A clinical decision rule can determine the pre-test probability of PE. If PE is "unlikely", refer for a D-dimer test. If the D-dimer result is normal, PE can be excluded. If D-dimer levels are increased, refer for chest imaging. If PE is "likely", refer for chest imaging. Imaging with computed tomography pulmonary angiogram is accurate and preferred for diagnosing PE, but may detect asymptomatic PE of uncertain clinical significance. Imaging with ventilation-perfusion (VQ) scan is associated with lower radiation exposure than computed tomography pulmonary angiogram, and may be preferred in younger patients and pregnancy. A low probability or high probability VQ scan is helpful for ruling out or confirming PE, respectively; however, an intermediate probability VQ scan requires further investigation. The direct oral anticoagulants have expanded the anticoagulation options for PE. These are the preferred anticoagulant for most patients with PE because they are associated with a lower risk of bleeding, and have the practical advantages of fixed dosage, no need for routine monitoring, and fewer drug interactions compared with vitamin K antagonists. Initial parenteral treatment is required before dabigatran and edoxaban.
Collapse
Affiliation(s)
- Paul C Kruger
- Fiona Stanley Hospital, Perth, WA.,PathWest Laboratory Medicine, Perth, WA.,Population Health Research Institute, Hamilton, Canada
| | - John W Eikelboom
- Population Health Research Institute, Hamilton, Canada.,Hamilton Health Sciences, Hamilton, Canada
| | - James D Douketis
- Hamilton Health Sciences, Hamilton, Canada.,St. Joseph's Healthcare Hamilton, McMaster University, Hamilton, Canada
| | | |
Collapse
|
20
|
Harder EM, Desai O, Marshall PS. Clinical Probability Tools for Deep Venous Thrombosis, Pulmonary Embolism, and Bleeding. Clin Chest Med 2019; 39:473-482. [PMID: 30122172 DOI: 10.1016/j.ccm.2018.04.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Overdiagnosis of venous thromboembolism is associated with increasing numbers of patient complications and health care burden. Multiple clinical tools exist to estimate the probability of pulmonary embolism and deep venous thrombosis. When used with d-dimer testing, these can further stratify venous thromboembolism risk to help inform the use of additional diagnostic testing. Although there are similar tools to estimate bleeding risk, these are not as well-validated and lack reliability.
Collapse
Affiliation(s)
- Eileen M Harder
- Department of Internal Medicine, Yale University School of Medicine, 15 York Street, LCI 101, New Haven, CT 06520, USA
| | - Omkar Desai
- Section of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Yale University School of Medicine, 15 York Street, LCI 101, New Haven, CT 06520, USA
| | - Peter S Marshall
- Section of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Yale University School of Medicine, 15 York Street, LCI 101, New Haven, CT 06520, USA.
| |
Collapse
|
21
|
Swan D, Hitchen S, Klok FA, Thachil J. The problem of under-diagnosis and over-diagnosis of pulmonary embolism. Thromb Res 2019; 177:122-129. [PMID: 30889517 DOI: 10.1016/j.thromres.2019.03.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/02/2019] [Accepted: 03/13/2019] [Indexed: 12/14/2022]
Abstract
Pulmonary embolism (PE) is an increasingly recognised condition which is associated with significant morbidity and mortality. Despite the better awareness of this serious condition, the diagnosis is still overlooked in many cases with sometimes fatal consequences. Under-diagnosis may be due to several reasons including reliance on non-specific 'classic' symptoms, belief that bedside measurements will likely be abnormal in the setting of acute PE, and confounding factors like co-existent cardiorespiratory diseases or being in an intensive care unit, where the diagnosis may not be considered. At the same time, incidental diagnosis of PE is occurring more often due to frequent use of imaging investigations alongside advancements in CT technology, and dilemma exists as to whether the chance finding of PE requires anticoagulation, especially when identified only at the subsegmental level. This article reviews these two issues of under-diagnosis and over-diagnosis of PE in the current era.
Collapse
Affiliation(s)
- Dawn Swan
- Department of Haematology, University Hospital Galway, Galway, Ireland.
| | - Sophy Hitchen
- Department of Haematology, Central Manchester University Hospitals NHS Foundation Trust, Manchester, United Kingdom
| | - Frederikus A Klok
- Department of Medicine - Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | - Jecko Thachil
- Department of Haematology, Central Manchester University Hospitals NHS Foundation Trust, Manchester, United Kingdom
| |
Collapse
|
22
|
Mançano AD, Rodrigues RS, Barreto MM, Zanetti G, Moraes TCD, Marchiori E. Incidence and morphological characteristics of the reversed halo sign in patients with acute pulmonary embolism and pulmonary infarction undergoing computed tomography angiography of the pulmonary arteries. ACTA ACUST UNITED AC 2019; 45:e20170438. [PMID: 30810644 PMCID: PMC6534406 DOI: 10.1590/1806-3713/e20170438] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 06/09/2018] [Indexed: 01/15/2023]
Abstract
OBJECTIVE To determine the incidence of the reversed halo sign (RHS) in patients with pulmonary infarction (PI) due to acute pulmonary embolism (PE), detected by computed tomography angiography (CTA) of the pulmonary arteries, and to describe the main morphological features of the RHS. METHODS We evaluated 993 CTA scans, stratified by the risk of PE, performed between January of 2010 and December of 2014. Although PE was detected in 164 scans (16.5%), three of those scans were excluded because of respiratory motion artifacts. Of the remaining 161 scans, 75 (46.6%) showed lesions consistent with PI, totaling 86 lesions. Among those lesions, the RHS was seen in 33 (38.4%, in 29 patients). RESULTS Among the 29 patients with scans showing lesions characteristic of PI with the RHS, 25 (86.2%) had a single lesion and 4 (13.8%) had two, totaling 33 lesions. In all cases, the RHS was in a subpleural location. To standardize the analysis, all images were interpreted in the axial plane. Among those 33 lesions, the RHS was in the right lower lobe in 17 (51.5%), in the left lower lobe in 10 (30.3%), in the lingula in 5 (15.2%), and in the right upper lobe in 1 (3.0%). Among those same 33 lesions, areas of low attenuation were seen in 29 (87.9%). The RHS was oval in 24 (72.7%) of the cases and round in 9 (27.3%). Pleural effusion was seen in 21 (72.4%) of the 29 patients with PI and the RHS. CONCLUSIONS A diagnosis of PE should be considered when there are findings such as those described here, even in patients with nonspecific clinical symptoms.
Collapse
Affiliation(s)
- Alexandre Dias Mançano
- . Departamento de Radiologia, RA Radiologia - Sabin Medicina Diagnóstica - Taguatinga (DF) Brasil
| | - Rosana Souza Rodrigues
- . Universidade Federal do Rio de Janeiro, Rio de Janeiro (RJ) Brasil.,. Instituto D'Or de Pesquisa e Ensino - IDOR - Rio de Janeiro (RJ) Brasil
| | | | - Gláucia Zanetti
- . Universidade Federal do Rio de Janeiro, Rio de Janeiro (RJ) Brasil
| | - Thiago Cândido de Moraes
- . Departamento de Radiologia, RA Radiologia - Sabin Medicina Diagnóstica - Taguatinga (DF) Brasil
| | - Edson Marchiori
- . Universidade Federal do Rio de Janeiro, Rio de Janeiro (RJ) Brasil
| |
Collapse
|
23
|
Richardson S, Solomon P, O'Connell A, Khan S, Gong J, Makhnevich A, Qiu G, Zhang M, McGinn T. A Computerized Method for Measuring Computed Tomography Pulmonary Angiography Yield in the Emergency Department: Validation Study. JMIR Med Inform 2018; 6:e44. [PMID: 30361200 PMCID: PMC6231863 DOI: 10.2196/medinform.9957] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/16/2018] [Accepted: 07/06/2018] [Indexed: 11/13/2022] Open
Abstract
Background Use of computed tomography pulmonary angiography (CTPA) in the assessment of pulmonary embolism (PE) has markedly increased over the past two decades. While this technology has improved the accuracy of radiological testing for PE, CTPA also carries the risk of substantial iatrogenic harm. Each CTPA carries a 14% risk of contrast-induced nephropathy and a lifetime malignancy risk that can be as high as 2.76%. The appropriate use of CTPA can be estimated by monitoring the CTPA yield, the percentage of tests positive for PE. This is the first study to propose and validate a computerized method for measuring the CTPA yield in the emergency department (ED). Objective The objective of our study was to assess the validity of a novel computerized method of calculating the CTPA yield in the ED. Methods The electronic health record databases at two tertiary care academic hospitals were queried for CTPA orders completed in the ED over 1-month periods. These visits were linked with an inpatient admission with a discharge diagnosis of PE based on the International Classification of Diseases codes. The computerized the CTPA yield was calculated as the number of CTPA orders with an associated inpatient discharge diagnosis of PE divided by the total number of orders for completed CTPA. This computerized method was then validated by 2 independent reviewers performing a manual chart review, which included reading the free-text radiology reports for each CTPA. Results A total of 349 CTPA orders were completed during the 1-month periods at the two institutions. Of them, acute PE was diagnosed on CTPA in 28 studies, with a CTPA yield of 7.7%. The computerized method correctly identified 27 of 28 scans positive for PE. The one discordant scan was tied to a patient who was discharged directly from the ED and, as a result, never received an inpatient discharge diagnosis. Conclusions This is the first successful validation study of a computerized method for calculating the CTPA yield in the ED. This method for data extraction allows for an accurate determination of the CTPA yield and is more efficient than manual chart review. With this ability, health care systems can monitor the appropriate use of CTPA and the effect of interventions to reduce overuse and decrease preventable iatrogenic harm.
Collapse
Affiliation(s)
- Safiya Richardson
- Department of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Philip Solomon
- Department of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Alexander O'Connell
- Department of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Sundas Khan
- Department of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Jonathan Gong
- Department of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Alex Makhnevich
- Department of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Guang Qiu
- Department of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Meng Zhang
- Department of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Thomas McGinn
- Department of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| |
Collapse
|
24
|
Friedman T, Winokur RS, Quencer KB, Madoff DC. Patient Assessment: Clinical Presentation, Imaging Diagnosis, Risk Stratification, and the Role of Pulmonary Embolism Response Team. Semin Intervent Radiol 2018; 35:116-121. [PMID: 29872247 DOI: 10.1055/s-0038-1642040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Pulmonary embolism (PE) is currently the third leading cause of death and moreover is likely underdiagnosed. PE remains the most common preventable cause of hospital deaths in the United States, which may be attributable to its diagnostic challenges. Although difficult to diagnose, patient mortality rates are time-dependent, and thus, the suspicion and diagnosis of PE in a timely manner is imperative. Diagnosis based on several criteria which may dictate imaging workup as well as laboratory tests and clinical parameters are discussed. The evolution of treatment guidelines via various clinical trials and recommendations is outlined, setting the stage for the use of fibrinolytics, whether systemic or catheter directed. Treatment, including fibrinolytics, is predicated on patient triage into three large categories-massive, submassive, or low-risk PE. Additionally, a relatively new concept of a multidisciplinary team composed of several subspecialty experts known as the PE response team (PERT) is discussed. PERT's timely and unified recommendations have been shown to optimize care and decrease mortality while tailoring treatment to each individual afflicted by PE.
Collapse
Affiliation(s)
- Tamir Friedman
- Section of Interventional Radiology, Department of Radiology, Advanced Medical Imaging, Torrington, Connecticut
| | - Ronald S Winokur
- Section of Interventional Radiology, Department of Radiology, Weill Cornell/New York Presbyterian Hospital, New York, New York
| | - Keith B Quencer
- Section of Interventional Radiology, Department of Radiology, University of Utah, Salt Lake City, Utah
| | - David C Madoff
- Section of Interventional Radiology, Department of Radiology, Weill Cornell/New York Presbyterian Hospital, New York, New York
| |
Collapse
|
25
|
Moore AJE, Wachsmann J, Chamarthy MR, Panjikaran L, Tanabe Y, Rajiah P. Imaging of acute pulmonary embolism: an update. Cardiovasc Diagn Ther 2018; 8:225-243. [PMID: 30057872 DOI: 10.21037/cdt.2017.12.01] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Imaging plays an important role in the evaluation and management of acute pulmonary embolism (PE). Computed tomography (CT) pulmonary angiography (CTPA) is the current standard of care and provides accurate diagnosis with rapid turnaround time. CT also provides information on other potential causes of acute chest pain. With dual-energy CT, lung perfusion abnormalities can also be detected and quantified. Chest radiograph has limited utility, occasionally showing findings of PE or infarction, but is useful in evaluating other potential causes of chest pain. Ventilation-perfusion (VQ) scan demonstrates ventilation-perfusion mismatches in these patients, with several classification schemes, typically ranging from normal to high. Magnetic resonance imaging (MRI) also provides accurate diagnosis, but is available in only specialized centers and requires higher levels of expertise. Catheter pulmonary angiography is no longer used for diagnosis and is used only for interventional management. Echocardiography is used for risk stratification of these patients. In this article, we review the role of imaging in the evaluation of acute PE.
Collapse
Affiliation(s)
- Alastair J E Moore
- Department of Radiology, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Jason Wachsmann
- Department of Radiology, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Murthy R Chamarthy
- Department of Radiology, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Lloyd Panjikaran
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
| | - Yuki Tanabe
- Department of Radiology, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Prabhakar Rajiah
- Department of Radiology, UT Southwestern Medical Center, Dallas, Texas, USA
| |
Collapse
|
26
|
Repplinger MD, Nagle SK, Harringa JB, Broman AT, Lindholm CR, François CJ, Grist TM, Reeder SB, Schiebler ML. Clinical outcomes after magnetic resonance angiography (MRA) versus computed tomographic angiography (CTA) for pulmonary embolism evaluation. Emerg Radiol 2018; 25:469-477. [PMID: 29749576 DOI: 10.1007/s10140-018-1609-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 04/25/2018] [Indexed: 12/17/2022]
Abstract
PURPOSE To compare patient outcomes following magnetic resonance angiography (MRA) versus computed tomographic angiography (CTA) ordered for suspected pulmonary embolism (PE). METHODS In this IRB-approved, single-center, retrospective, case-control study, we reviewed the medical records of all patients evaluated for PE with MRA during a 5-year period along with age- and sex-matched controls evaluated with CTA. Only the first instance of PE evaluation during the study period was included. After application of our exclusion criteria to both study arms, the analysis included 1173 subjects. The primary endpoint was major adverse PE-related event (MAPE), which we defined as major bleeding, venous thromboembolism, or death during the 6 months following the index imaging test (MRA or CTA), obtained through medical record review. Logistic regression, chi-square test for independence, and Fisher's exact test were used with a p < 0.05 threshold. RESULTS The overall 6-month MAPE rate following MRA (5.4%) was lower than following CTA (13.6%, p < 0.01). Amongst outpatients, the MAPE rate was lower for MRA (3.7%) than for CTA (8.0%, p = 0.01). Accounting for age, sex, referral source, BMI, and Wells' score, patients were less likely to suffer MAPE than those who underwent CTA, with an odds ratio of 0.44 [0.24, 0.80]. Technical success rate did not differ significantly between MRA (92.6%) and CTA (90.5%) groups (p = 0.41). CONCLUSION Within the inherent limitations of a retrospective case-controlled analysis, we observed that the rate of MAPE was lower (more favorable) for patients following pulmonary MRA for the primary evaluation of suspected PE than following CTA.
Collapse
Affiliation(s)
- Michael D Repplinger
- BerbeeWalsh Department of Emergency Medicine, University of Wisconsin, 800 University Bay Drive, Suite 310, Mail Code 9123, Madison, WI, 53705, USA. .,Department of Radiology, University of Wisconsin, Madison, WI, USA.
| | - Scott K Nagle
- Department of Radiology, University of Wisconsin, Madison, WI, USA.,Department of Medical Physics, University of Wisconsin, Madison, WI, USA.,Department of Pediatrics, University of Wisconsin, Madison, WI, USA
| | - John B Harringa
- BerbeeWalsh Department of Emergency Medicine, University of Wisconsin, 800 University Bay Drive, Suite 310, Mail Code 9123, Madison, WI, 53705, USA.,School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Aimee T Broman
- Department of Biostatistics, University of Wisconsin, Madison, WI, USA
| | - Christopher R Lindholm
- Department of Medicine, Dartmouth University, Geisel School of Medicine, Hanover, NH, USA
| | - Christopher J François
- BerbeeWalsh Department of Emergency Medicine, University of Wisconsin, 800 University Bay Drive, Suite 310, Mail Code 9123, Madison, WI, 53705, USA.,Department of Medicine, University of Wisconsin, Madison, WI, USA
| | - Thomas M Grist
- Department of Radiology, University of Wisconsin, Madison, WI, USA.,Department of Medical Physics, University of Wisconsin, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin, Madison, WI, USA
| | - Scott B Reeder
- BerbeeWalsh Department of Emergency Medicine, University of Wisconsin, 800 University Bay Drive, Suite 310, Mail Code 9123, Madison, WI, 53705, USA.,Department of Radiology, University of Wisconsin, Madison, WI, USA.,Department of Medical Physics, University of Wisconsin, Madison, WI, USA.,Department of Pediatrics, University of Wisconsin, Madison, WI, USA.,Department of Medicine, University of Wisconsin, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin, Madison, WI, USA
| | - Mark L Schiebler
- Department of Radiology, University of Wisconsin, Madison, WI, USA
| |
Collapse
|
27
|
Cronin P, Dwamena BA. A Clinically Meaningful Interpretation of the Prospective Investigation of Pulmonary Embolism Diagnosis (PIOPED) II and III Data. Acad Radiol 2018; 25:561-572. [PMID: 29337091 DOI: 10.1016/j.acra.2017.11.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 08/01/2017] [Accepted: 11/21/2017] [Indexed: 12/21/2022]
Abstract
RATIONALE AND OBJECTIVES This study aimed to calculate the multiple-level likelihood ratios (LRs) and posttest probabilities for a positive, indeterminate, or negative test result for multidetector computed tomography pulmonary angiography (MDCTPA) ± computed tomography venography (CTV) and magnetic resonance pulmonary angiography (MRPA) ± magnetic resonance venography (MRV) for each clinical probability level (two-, three-, and four-level) for the nine most commonly used clinical prediction rules (CPRs) (Wells, Geneva, Miniati, and Charlotte). The study design is a review of observational studies with critical review of multiple cohort studies. The settings are acute care, emergency room care, and ambulatory care (inpatients and outpatients). MATERIALS AND METHODS Data were used to estimate pulmonary embolism (PE) pretest probability for each of the most commonly used CPRs at each probability level. Multiple-level LRs (positive, indeterminate, negative test) were generated and used to calculate posttest probabilities for MDCTPA, MDCTPA + CTV, MRPA, and MRPA + MRV from sensitivity and specificity results from Prospective Investigation of Pulmonary Embolism Diagnosis (PIOPED) II and PIOPED III for each clinical probability level for each CPR. Nomograms were also created. RESULTS The LRs for a positive test result were higher for MRPA compared to MDCTPA without venography (76 vs 20) and with venography (42 vs 18). LRs for a negative test result were lower for MDCTPA compared to MRPA without venography (0.18 vs 0.22) and with venography (0.12 vs 0.15). In the three-level Wells score, the pretest clinical probability of PE for a low, moderate, and high clinical probability score is 5.7, 23, and 49. The posttest probability for an initially low clinical probability PE for a positive, indeterminate, and negative test result, respectively, for MDCTPA is 54, 5 and 1; for MDCTPA + CTV is 52, 2, and 0.7; for MRPA is 82, 6, and 1; and for MRPA + MRV is 72, 3, and 1; for an initially moderate clinical probability PE for MDCTPA is 86, 22, and 5; for MDCTPA + CTV is 85, 10, and 4; for MRPA is 96, 25, and 6; and for MRPA + MRV is 93, 14, and 4; and for an initially high clinical probability of PE for MDCTPA is 95, 47, and 15; for MDCTPA + CTV is 95, 27, and 10; for MRPA is 99, 52, and 17; and for MRPA + MRV is 98, 34, and 13. CONCLUSIONS For a positive test result, LRs were considerably higher for MRPA compared to MDCTPA. However, both a positive MRPA and MDCTPA have LRs >10 and therefore can confirm the presence of PE. Performing venography reduced the LR for a positive and negative test for both MDCTPA and MRPA. The nomograms give posttest probabilities for a positive, indeterminate, or negative test result for MDCTPA and MRPA (with and without venography) for each clinical probability level for each of the CPR.
Collapse
Affiliation(s)
- Paul Cronin
- Department of Radiology, University of Michigan Health System, B1 132G Taubman Center/5302, 1500 East Medical Center, Ann Arbor, MI 48109.
| | - Ben A Dwamena
- Department of Radiology, University of Michigan Health System, B1 132G Taubman Center/5302, 1500 East Medical Center, Ann Arbor, MI 48109; Nuclear Medicine Service, VA Ann Arbor Health Care System, Ann Arbor, Michigan
| |
Collapse
|
28
|
Mandell D, Planinsic R, Melean F, Hughes C, Tevar AD, Humar A, Cassidy BJ, Simmons R, Dewolf A, Sakai T. Critical Importance of Low-Dose Tissue Plasminogen Activator Policy for Treating Intraoperative Pulmonary Thromboembolism During Liver Transplantation. Semin Cardiothorac Vasc Anesth 2018; 22:376-382. [DOI: 10.1177/1089253218760221] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Tissue plasminogen activator (tPA) has been reported to treat intraoperative pulmonary thromboembolism (PTE) during liver transplantation (LT). However, tPA administration is often delayed due to fear of uncontrolled bleeding and storage in a refrigerator outside of operating rooms. Various dosages of tPA were used. We hypothesize that a policy of tPA storage and low dosage use improves patient outcomes. At a transplantation center, a multidisciplinary committee has implemented a tPA policy since April 2014, which includes the following: (1) timely administering of low-dose tPA (0.5-4 mg) for intraoperative PTE; (2) keeping 2 vials of tPA (2 mg/vial) in the operating room at room temperature; and (3) transferring unused tPA vials to the cardiology catheterization laboratory for next-day use. A prospective observational study was conducted to record the incidence and outcome of PTE during LTs. Over the next 19 months, 99 adult deceased donor LTs were performed with 1 (1.0%) intraoperative PTE. A 45-year-old woman with hepatitis C developed PTE within 5 minutes after graft reperfusion. A 2-mg tPA was immediately administered via a central venous line with hemodynamic improvement and clot lysis. Thromboelastography was normalized in 90 minutes. Five LT cases developing intraoperative PTE have been reported to receive “standard” dosages of tPA (20-110 mg) or urokinase (4400 IU/kg), which were administered more than 20 minutes after the diagnosis of PTE. One intraoperative death and one later mortality were noted with intracranial hemorrhages/infarction of 3 cases. The multidisciplinary low-dose tPA policy for PTE was suggested to be effective.
Collapse
Affiliation(s)
- Daniel Mandell
- Anesthesiology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Raymond Planinsic
- Anesthesiology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Fernando Melean
- Anesthesiology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | | | - Amit D. Tevar
- Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Abhinav Humar
- Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | | | - Richard Simmons
- Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Andre Dewolf
- Anethesiology, Northwestern University, Chicago, IL, USA
| | - Tetsuro Sakai
- Anesthesiology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| |
Collapse
|
29
|
Carter BW, Muse VV, Mansouri M. Imaging of Nontraumatic Mediastinal and Pulmonary Processes. Emerg Radiol 2018. [DOI: 10.1007/978-3-319-65397-6_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
30
|
Mourad MAFE, Al Gebaly AFA, Samra MFA. Multi-detector computed tomography (MDCT) imaging of cardiovascular effects of pulmonary embolism: What the radiologists need to know. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2017. [DOI: 10.1016/j.ejrnm.2017.01.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
|
31
|
Petrosian A, Poreda A. Middle-Aged Female With Chest Pain. Ann Emerg Med 2017; 70:431-440. [PMID: 28844264 DOI: 10.1016/j.annemergmed.2017.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Indexed: 10/19/2022]
Affiliation(s)
- Alex Petrosian
- Department of Emergency Medicine, University at Buffalo, Buffalo, NY
| | - Andrew Poreda
- Department of Emergency Medicine, University at Buffalo, Buffalo, NY
| |
Collapse
|
32
|
Cronin P, Dwamena BA. A Clinically Meaningful Interpretation of the Prospective Investigation of Pulmonary Embolism Diagnosis (PIOPED) Scintigraphic Data. Acad Radiol 2017; 24:550-562. [PMID: 28262522 DOI: 10.1016/j.acra.2017.01.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 01/30/2017] [Accepted: 01/31/2017] [Indexed: 10/20/2022]
Abstract
RATIONALE AND OBJECTIVES Pulmonary embolism (PE) is a common condition associated with significant morbidity and mortality. Diagnostic test characteristics reported in terms of sensitivity and specificity are difficult to translate at the clinical level. More relevant measures are likelihood ratios (LRs), which can convert a pretest into a posttest probability. The aim of our study was to calculate the LRs and posttest probabilities for multiple-level test result for ventilation/perfusion (V/Q) lung scintigraphy and for perfusion scintigraphy combined with chest radiography using modified Prospective Investigation of Pulmonary Embolism Diagnosis (PIOPED) II and the Prospective Investigative Study of Pulmonary Embolism Diagnosis (PISAPED) criteria for each clinical probability level for the most commonly used clinical prediction rules (CPR) using the PIOPED data. MATERIALS AND METHODS PE pretest probability was estimated for the most commonly used CPRs (Wells, Geneva, Miniati, and Charlotte) at each clinical probability level (two-, three-, and four-level). Multiple-level LRs (high, indeterminate, low, very low probability, and normal) and the positive, indeterminate, and negative results for V/Q scintigraphy, and the positive, indeterminate, and negative results for perfusion scintigraphy were generated and used to calculate posttest probabilities based on the sensitivity and specificity data from PIOPED for each clinical probability level (low, intermediate, and high) for each CPR. Nomograms were also created. RESULTS The LRs for a positive V/Q and perfusion scintigraphy test using modified PIOPED II and PISAPED criteria were 20.6, 11, and 23.7, and for a negative test result were 0.15, 0.16, and 0.2, respectively. In the three-level Wells score, the posttest probability for an initial low clinical probability PE for a positive, indeterminate, and negative test result, respectively, for V/Q scintigraphy is 56, 5, and 0.9; for perfusion scintigraphy with modified PIOPED 40, 7, and 0.9, and with PISAPED 59, not available (N/A), and 1.2; for an initial moderate clinical probability PE for V/Q scintigraphy 86, .22, and 4; for perfusion scintigraphy with modified PIOPED 77, 26, and 5, and with PISAPED 88, N/A, and 6; for an initial high clinical probability of PE for V/Q scintigraphy 95, 48, and 13; and for perfusion scintigraphy with modified PIOPED 92, 53, and 13, and with PISAPED 96, N/A, and 16. CONCLUSIONS With LRs >10, a positive test result for V/Q and perfusion scintigraphy can confirm the presence of PE. Only a normal test result has low enough LR to exclude PE.
Collapse
|
33
|
Referral Patterns and Diagnostic Yield of Lung Scintigraphy in the Diagnosis of Acute Pulmonary Embolism. THROMBOSIS 2017; 2017:1623868. [PMID: 28491475 PMCID: PMC5405392 DOI: 10.1155/2017/1623868] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 04/04/2017] [Indexed: 12/17/2022]
Abstract
Introduction. The purpose of this study is to assess referral patterns and the yield of ventilation-perfusion (V/Q) scintigraphy in patients referred for acute pulmonary embolism (PE). Methods. We retrospectively reviewed the charts of all patients who underwent V/Q studies between April 1, 2008, and March 31, 2010. Patients were subdivided into 4 groups based on their referral source: emergency department (ED), hospital inpatient ward, outpatient thrombosis clinic, and all other outpatient sources. Results. A total of 1008 patients underwent V/Q scintigraphy to exclude acute PE. The number of ED, inpatient, thrombosis clinic, and outpatient studies was 43 (4.3%), 288 (28.6%), 351 (34.8%), and 326 (32.3%). Proportion of patients with contrast contraindication varied significantly among the different groups. Of the 1,008 studies, 331 (32.8%) were interpreted as normal, 408 (40.5%) as low, 158 (15.7%) as intermediate, and 111 (11.0%) as high probability for PE. 68 (6.7%) patients underwent CTPA within 2 weeks following V/Q. Conclusion. The rate of nondiagnostic studies is lower than that reported in previously published data, with a relatively low rate of intermediate probability studies. Only a small fraction of patients undergoing a V/Q scan will require a CTPA.
Collapse
|
34
|
Role of Clinical Decision Tools in the Diagnosis of Pulmonary Embolism. AJR Am J Roentgenol 2017; 208:W60-W70. [DOI: 10.2214/ajr.16.17206] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
35
|
CT Angiography: Post-processed Contrast Enhancement for Improved Detection of Pulmonary Embolism. Acad Radiol 2017; 24:131-136. [PMID: 27863899 DOI: 10.1016/j.acra.2016.09.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Revised: 09/29/2016] [Accepted: 09/30/2016] [Indexed: 11/24/2022]
Abstract
RATIONALE AND OBJECTIVES The study aimed to improve the detection of pulmonary embolism via an iodine contrast enhancement tool in patients who underwent suboptimal enhanced computed tomography angiography (CTA). MATERIALS AND METHODS We evaluated the CT examinations of 41 patients who underwent CTA for evaluation of the pulmonary arteries which suffered from suboptimal contrast enhancement. The contrast enhancement of the reconstructed images was increased via a post-processing tool (vContrast). Image noise and contrast-to-noise ratio (CNR) were assessed in eight different regions: main pulmonary artery, right and left pulmonary arteries, right and left segment arteries, muscle, subcutaneous fat, and bone. For subjective image assessment, three experienced radiologists evaluated the diagnostic quality. RESULTS While employing the post-processing algorithm, the CNR for contrast-filled lumen and thrombus/muscle improves significantly by a factor of 1.7 (CNR without vContrast = 8.48 ± 6.79/CNR with vContrast = 14.46 ± 5.29) (P <0.01). No strengthening of artifacts occurred, and the mean Hounsfield unit values of the muscle, subcutaneous fat, and the bone showed no significant changes. Subjective image analysis illustrated a significant improvement using post-processing for clinically relevant criteria such as diagnostic confidence. CONCLUSIONS vContrast makes CT angiograms with inadequate contrast applicable for diagnostic evaluation, offering an improved visualization of the pulmonary arteries. In addition, vContrast can help in the significant reduction of the iodine contrast material.
Collapse
|
36
|
Rajpurohit V, Tejvir P, Meena N, Mittal K. Metatarsal Fracture Leading to Massive Pulmonary Embolism. Indian J Crit Care Med 2017; 21:401-403. [PMID: 28701848 PMCID: PMC5492744 DOI: 10.4103/ijccm.ijccm_125_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Immobilization and bed rest after fracture and orthopedic surgery are routinely advised protocol. Period of bed rest usually depends on the type of injury and orthopedic procedure, ranging from few days to weeks. The trauma, surgery, and immobilization with other contributing factors can lead to deep vein thrombosis and pulmonary embolism (PE) in these patients. Although there is high incidence of PE in such patients, it is difficult to diagnose, primarily because of the variety of nonspecific signs and symptoms. Here, we discuss a case of a 30-year-old female, who had suffered a trivial roadside accident leading to metatarsal bone fracture and later on presented in emergency with seizures, pulmonary edema, and cardiac arrest, after immobilization of just 5 days which was diagnosed to be result of massive PE. Here, we will discuss the pathophysiology, risk factors, and management of massive PE.
Collapse
Affiliation(s)
- Vikas Rajpurohit
- Department of Anaesthesiology and Critical Care, Dr. S. N. Medical College, Jodhpur, Rajasthan, India
| | - Prateek Tejvir
- Department of Anaesthesiology and Critical Care, Dr. S. N. Medical College, Jodhpur, Rajasthan, India
| | - Neelam Meena
- Department of Anaesthesiology and Critical Care, Dr. S. N. Medical College, Jodhpur, Rajasthan, India
| | - Kailash Mittal
- Department of Anaesthesiology and Critical Care, Dr. S. N. Medical College, Jodhpur, Rajasthan, India
| |
Collapse
|
37
|
Tilve-Gómez A, Rodríguez-Fernández P, Trillo-Fandiño L, Plasencia-Martínez JM. Imaging techniques used in the diagnostic workup of acute venous thromboembolic disease. RADIOLOGIA 2016; 59:329-342. [PMID: 27986265 DOI: 10.1016/j.rx.2016.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 09/09/2016] [Accepted: 10/24/2016] [Indexed: 10/20/2022]
Abstract
Early diagnosis is one of the most important factors affecting the prognosis of pulmonary embolism (PE); however, the clinical presentation of PE is often very unspecific and it can simulate other diseases. For these reasons, imaging tests, especially computed tomography angiography (CTA) of the pulmonary arteries, have become the keystone in the diagnostic workup of PE. The wide availability and high diagnostic performance of pulmonary CTA has led to an increase in the number of examinations done and a consequent increase in the population's exposure to radiation and iodinated contrast material. Thus, other techniques such as scintigraphy and venous ultrasonography of the lower limbs, although less accurate, continue to be used in certain circumstances, and optimized protocols have been developed for CTA to reduce the dose of radiation (by decreasing the kilovoltage) and the dose of contrast agents. We describe the technical characteristics and interpretation of the findings for each imaging technique used to diagnose PE and discuss their advantages and limitations; this knowledge will help the best technique to be chosen for each case. Finally, we comment on some data about the increased use of CTA, its clinical repercussions, its "overuse", and doubts about its cost-effectiveness.
Collapse
Affiliation(s)
- A Tilve-Gómez
- Servicio de Radiodiagnóstico, IISGS, XXIV, Hospital Álvaro Cunqueiro, Vigo (Pontevedra), España.
| | - P Rodríguez-Fernández
- Servicio de Radiodiagnóstico, IISGS, XXIV, Hospital Álvaro Cunqueiro, Vigo (Pontevedra), España
| | - L Trillo-Fandiño
- Servicio de Radiodiagnóstico, IISGS, XXIV, Hospital Álvaro Cunqueiro, Vigo (Pontevedra), España
| | - J M Plasencia-Martínez
- Servicio de Radiodiagnóstico, Hospital General Universitario José María Morales Meseguer, Murcia, España
| |
Collapse
|
38
|
Song I, Yi JG, Park JH, Ko SM. Indirect CT Venography at 80 kVp with Sinogram-Affirmed Iterative Reconstruction Compared to 120 kVp with Filtered Back Projection: Assessment of Image Quality and Radiation Dose. PLoS One 2016; 11:e0163416. [PMID: 27662618 PMCID: PMC5035093 DOI: 10.1371/journal.pone.0163416] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 09/08/2016] [Indexed: 11/30/2022] Open
Abstract
Objective To evaluate the image quality and radiation dose of indirect computed tomographic venography (CTV) using 80 kVp with sinogram-affirmed iterative reconstruction (SAFIRE) and 120 kVp with filtered back projection (FBP). Materials and Methods This retrospective study was approved by our institution and informed consent was waived. Sixty-one consecutive patients (M: F = 27: 34, mean age 60 ± 16, mean BMI 23.6 ± 3.6 kg/m2) underwent pelvic and lower extremity CTVs [group A (n = 31, 120 kVp, reconstructed with FBP) vs. group B (n = 30, 80 kVp, reconstructed with SAFIRE)]. The vascular enhancement, image noise, contrast-to-noise ratio (CNR), and signal-to-noise ratio (SNR) were compared. Subjective image analysis for image quality and noise was performed by two radiologists. Radiation dose was compared between the two groups. Results Compared with group A, higher mean vascular enhancement was observed in the group B (group A vs. B, 118.8 ± 15.7 HU vs. 178.6 ± 39.6 HU, p < 0.001), as well as image noise (12.0 ± 3.8 HU vs. 17.9 ± 6.1 HU, p < 0.001) and CNR (5.1 ± 1.9 vs. 7.6 ± 3.0, p < 0.001). The SNRs were not significantly different in both groups (11.2 ± 4.8 vs. 10.8 ± 3.7, p = 0.617). There was no significant difference in subjective image quality between the two groups (all p > 0.05). The subjective image noise was higher in the group B (p = 0.036 in reader 1, p = 0.005 in reader 2). The inter-observer reliability for assessing subjective image quality was good (ICC 0.746~0.784, p < 0.001). The mean CT dose index volume (CTDIvol) and mean dose length product (DLP) were significantly lower in group B than group A [CTDIvol, 6.4 ± 1.3 vs. 2.2 ± 2.2 mGy (p < 0.001); DLP, 499.1 ± 116.0 vs. 133.1 ± 45.7 mGy × cm (p < 0.001)]. Conclusions CTV using 80 kVp combined with SAFIRE provides lower radiation dose and improved CNR compared to CTV using 120 kVp with FBP.
Collapse
Affiliation(s)
- Inyoung Song
- Department of Radiology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, 143–729, Korea
| | - Jeong Geun Yi
- Department of Radiology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, 143–729, Korea
- * E-mail:
| | - Jeong Hee Park
- Department of Radiology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, 143–729, Korea
| | - Sung Min Ko
- Department of Radiology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, 143–729, Korea
| |
Collapse
|
39
|
Tirada N, Dreizin D, Khati NJ, Akin EA, Zeman RK. Imaging Pregnant and Lactating Patients. Radiographics 2016; 35:1751-65. [PMID: 26466183 DOI: 10.1148/rg.2015150031] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
As use of imaging in the evaluation of pregnant and lactating patients continues to increase, misperceptions of radiation and safety risks have proliferated, which has led to often unwarranted concerns among patients and clinicians. When radiologic examinations are appropriately used, the benefits derived from the information gained usually outweigh the risks. This review describes appropriateness and safety issues, estimated doses for imaging examinations that use iodizing radiation (ie, radiography, computed tomography, nuclear scintigraphy, and fluoroscopically guided interventional radiology), radiation risks to the mother and conceptus during various stages of pregnancy, and use of iodinated or gadolinium-based contrast agents and radiotracers in pregnant and lactating women. Maternal radiation risk must be weighed with the potential consequences of missing a life-threatening diagnosis such as pulmonary embolus. Fetal risks (ie, spontaneous abortion, teratogenesis, or carcinogenesis) vary with gestational age and imaging modality and should be considered in the context of the potential benefit of medically necessary diagnostic imaging. When feasible and medically indicated, modalities that do not use ionizing radiation (eg, magnetic resonance imaging) are preferred in pregnant and lactating patients. Radiologists should strive to minimize risks of radiation to the mother and fetus, counsel patients effectively, and promote a realistic understanding of risks related to imaging during pregnancy and lactation.
Collapse
Affiliation(s)
- Nikki Tirada
- From the Department of Radiology, George Washington University Hospital, 900 23rd St NW, Washington, DC 20037 (N.T., N.J.K., E.A.A., R.K.Z.); and Department of Diagnostic Radiology, University of Maryland Medical Center and R Adams Cowley Shock Trauma Center, Baltimore, Md (D.D)
| | - David Dreizin
- From the Department of Radiology, George Washington University Hospital, 900 23rd St NW, Washington, DC 20037 (N.T., N.J.K., E.A.A., R.K.Z.); and Department of Diagnostic Radiology, University of Maryland Medical Center and R Adams Cowley Shock Trauma Center, Baltimore, Md (D.D)
| | - Nadia J Khati
- From the Department of Radiology, George Washington University Hospital, 900 23rd St NW, Washington, DC 20037 (N.T., N.J.K., E.A.A., R.K.Z.); and Department of Diagnostic Radiology, University of Maryland Medical Center and R Adams Cowley Shock Trauma Center, Baltimore, Md (D.D)
| | - Esma A Akin
- From the Department of Radiology, George Washington University Hospital, 900 23rd St NW, Washington, DC 20037 (N.T., N.J.K., E.A.A., R.K.Z.); and Department of Diagnostic Radiology, University of Maryland Medical Center and R Adams Cowley Shock Trauma Center, Baltimore, Md (D.D)
| | - Robert K Zeman
- From the Department of Radiology, George Washington University Hospital, 900 23rd St NW, Washington, DC 20037 (N.T., N.J.K., E.A.A., R.K.Z.); and Department of Diagnostic Radiology, University of Maryland Medical Center and R Adams Cowley Shock Trauma Center, Baltimore, Md (D.D)
| |
Collapse
|
40
|
Reliability of D-Dimer test results in deciding the necessity of performing CTA in high risk population to establish the diagnosis of PE. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2016. [DOI: 10.1016/j.ejrnm.2016.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
41
|
Song J, Drobatz KJ, Silverstein DC. Retrospective evaluation of shortened prothrombin time or activated partial thromboplastin time for the diagnosis of hypercoagulability in dogs: 25 cases (2006-2011). J Vet Emerg Crit Care (San Antonio) 2016; 26:398-405. [PMID: 27074596 DOI: 10.1111/vec.12478] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 11/25/2014] [Accepted: 12/28/2014] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To evaluate the relationship between shortened prothrombin time (PT) or activated partial thromboplastin time (aPTT) values, clinical findings associated with hypercoagulability, suspicion of pulmonary thromboembolism (PTE), D-dimer concentrations, and thromboelastogram (TEG) indices. DESIGN Retrospective observational study from 2006 to 2011. SETTING University veterinary teaching hospital. ANIMALS Twenty-three dogs with TEG tracings and shortened PT or aPTT values and 23 control dogs with TEG tracings and normal PT and aPTT values. MEASUREMENTS AND MAIN RESULTS Parameters evaluated included signalment, coagulation testing results (PT, aPTT, D-dimer concentration), TEG measurements (R, K, α, maximal amplitude) and calculated clotting index, findings of clinical hypercoagulability (thrombosis of intravenous/intra-arterial catheters, vessel thrombosis, and suspected PTE). Dogs with shortened PT or aPTT had significantly more thrombus formation (P = 0.038), suspicion of PTE (P < 0.001), and increased D-dimer concentration (P < 0.001) compared to dogs with normal PT and aPTT values. There were no significant findings when compared to TEG values. CONCLUSIONS A shortened PT or aPTT in dogs may be indicative of a hypercoagulable state as evidenced by an increased incidence of thrombosis, frequency of suspected PTE, and increased circulating D-dimers. A prospective study is warranted to further evaluate the use of PT and aPTT to diagnose hypercoagulable states.
Collapse
Affiliation(s)
- Jennifer Song
- Department of Clinical Studies, University of Pennsylvania, 3800 Spruce Street, Philadelphia, PA, 19104
| | - Kenneth J Drobatz
- Department of Clinical Studies, University of Pennsylvania, 3800 Spruce Street, Philadelphia, PA, 19104
| | - Deborah C Silverstein
- Department of Clinical Studies, University of Pennsylvania, 3800 Spruce Street, Philadelphia, PA, 19104
| |
Collapse
|
42
|
Sabel BO, Buric K, Karara N, Thierfelder KM, Dinkel J, Sommer WH, Meinel FG. High-Pitch CT Pulmonary Angiography in Third Generation Dual-Source CT: Image Quality in an Unselected Patient Population. PLoS One 2016; 11:e0146949. [PMID: 26872262 PMCID: PMC4752234 DOI: 10.1371/journal.pone.0146949] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 12/22/2015] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES To investigate the feasibility of high-pitch CT pulmonary angiography (CTPA) in 3rd generation dual-source CT (DSCT) in unselected patients. METHODS Forty-seven patients with suspected pulmonary embolism underwent high-pitch CTPA on a 3rd generation dual-source CT scanner. CT dose index (CTDIvol) and dose length product (DLP) were obtained. Objective image quality was analyzed by calculating signal-to-noise-ratio (SNR) and contrast-to-noise ratio (CNR). Subjective image quality on the central, lobar, segmental and subsegmental level was rated by two experienced radiologists. RESULTS Median CTDI was 8.1 mGy and median DLP was 274 mGy*cm. Median SNR was 32.9 in the central and 31.9 in the segmental pulmonary arteries. CNR was 29.2 in the central and 28.2 in the segmental pulmonary arteries. Median image quality was "excellent" in central and lobar arteries and "good" in subsegmental arteries according to both readers. Segmental arteries varied between "excellent" and "good". Image quality was non-diagnostic in one case (2%), beginning in the lobar arteries. Thirteen patients (28%) showed minor motion artifacts. CONCLUSIONS In third-generation dual-source CT, high-pitch CTPA is feasible for unselected patients. It yields excellent image quality with minimal motion artifacts. However, compared to standard-pitch cohorts, no distinct decrease in radiation dose was observed.
Collapse
Affiliation(s)
- Bastian O. Sabel
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - Kristijan Buric
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - Nora Karara
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - Kolja M. Thierfelder
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - Julien Dinkel
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - Wieland H. Sommer
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - Felix G. Meinel
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany
| |
Collapse
|
43
|
Banzato A, Fedrigo M, Denas G, Faggioni G, Bianchi A, Valente M, Pengo V, Angelini A. Dyspnoea in a young woman: the opposite of every truth is just as true. Intern Emerg Med 2016; 11:95-9. [PMID: 26350422 DOI: 10.1007/s11739-015-1312-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 08/22/2015] [Indexed: 11/26/2022]
Affiliation(s)
- Alberto Banzato
- Cardiology Unit, Veneto Institute of Oncology IOV, IRCCS, Padua, Italy
| | - Marny Fedrigo
- Cardiovascular Pathology, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padua, Italy
| | - Gentian Denas
- Cardiology Clinic, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Via Giustiniani 2, 35121, Padua, Italy.
| | | | | | - Marialuisa Valente
- Cardiovascular Pathology, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padua, Italy
| | - Vittorio Pengo
- Cardiology Clinic, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Via Giustiniani 2, 35121, Padua, Italy
| | - Annalisa Angelini
- Cardiovascular Pathology, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padua, Italy
| |
Collapse
|
44
|
Moores L, Kline J, Portillo AK, Resano S, Vicente A, Arrieta P, Corres J, Tapson V, Yusen RD, Jiménez D. Multidetector computed tomographic pulmonary angiography in patients with a high clinical probability of pulmonary embolism. J Thromb Haemost 2016; 14:114-20. [PMID: 26559176 DOI: 10.1111/jth.13188] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 11/01/2015] [Indexed: 12/31/2022]
Abstract
UNLABELLED ESSENTIALS: When high probability of pulmonary embolism (PE), sensitivity of computed tomography (CT) is unclear. We investigated the sensitivity of multidetector CT among 134 patients with a high probability of PE. A normal CT alone may not safely exclude PE in patients with a high clinical pretest probability. In patients with no clear alternative diagnosis after CTPA, further testing should be strongly considered. BACKGROUND Whether patients with a negative multidetector computed tomographic pulmonary angiography (CTPA) result and a high clinical pretest probability of pulmonary embolism (PE) should be further investigated is controversial. METHODS This was a prospective investigation of the sensitivity of multidetector CTPA among patients with a priori clinical assessment of a high probability of PE according to the Wells criteria. Among patients with a negative CTPA result, the diagnosis of PE required at least one of the following conditions: ventilation/perfusion lung scan showing a high probability of PE in a patient with no history of PE, abnormal findings on venous ultrasonography in a patient without previous deep vein thrombosis at that site, or the occurrence of venous thromboembolism (VTE) in a 3-month follow-up period after anticoagulation was withheld because of a negative multidetector CTPA result. RESULTS We identified 498 patients with a priori clinical assessment of a high probability of PE and a completed CTPA study. CTPA excluded PE in 134 patients; in these patients, the pooled incidence of VTE was 5.2% (seven of 134 patients; 95% confidence interval [CI] 1.5-9.0). Five patients had VTEs that were confirmed by an additional imaging test despite a negative CTPA result (five of 48 patients; 10.4%; 95% CI 1.8-19.1), and two patients had objectively confirmed VTEs that occurred during clinical follow-up of at least 3 months (two of 86 patients; 2.3%; 95% CI 0-5.5). None of the patients had a fatal PE during follow-up. CONCLUSIONS A normal multidetector CTPA result alone may not safely exclude PE in patients with a high clinical pretest probability.
Collapse
Affiliation(s)
- L Moores
- F. Edward Hebert School of Medicine, Uniformed Services University, Bethesda, MD, USA
| | - J Kline
- Department of Emergency Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - A K Portillo
- Department of Internal Medicine, Instituto Ramon y Cajal de Investigacion Sanitaria IRYCIS, Ramón y Cajal Hospital, Madrid, Spain
| | - S Resano
- Radiology Department, Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS, Ramón y Cajal Hospital, Madrid, Spain
| | - A Vicente
- Radiology Department, Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS, Ramón y Cajal Hospital, Madrid, Spain
| | - P Arrieta
- Respiratory Department, Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS, Ramón y Cajal Hospital, Alcala de Henares University, Madrid, Spain
| | - J Corres
- Emergency Department, Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS, Ramón y Cajal Hospital, Madrid, Spain
| | - V Tapson
- Divisions of Pulmonary and Critical Care Medicine, Cedars-Sinai, Los Angeles, CA, USA
| | - R D Yusen
- Divisions of Pulmonary and Critical Care Medicine and General Medical Sciences, Washington University School of Medicine, St Louis, MO, USA
| | - D Jiménez
- Respiratory Department, Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS, Ramón y Cajal Hospital, Alcala de Henares University, Madrid, Spain
| |
Collapse
|
45
|
Jackson C, Westphal M, Quiñones-Hinojosa A. Complications of glioma surgery. HANDBOOK OF CLINICAL NEUROLOGY 2016; 134:201-18. [PMID: 26948356 DOI: 10.1016/b978-0-12-802997-8.00012-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Even with current advances in adjunctive therapies, including radiation, chemotherapy, and various clinical trials of gene therapy and immunotherapy, surgical resection remains one of the most effective treatment for intra-axial gliomas. Survival in these patients has been shown to be related to the extent of resection. In some cases, it can provide cures of long-term remission; in others, it can provide disease control when combined with the above adjunctive treatments. However, surgical resection carries its own risks and complications. These complications can be broadly divided into neurologic, regional, and systemic, including direct cortical and vascular injury, surgical wound complications, and postsurgical medical complications. Certain patient characteristics, including Karnofsky performance status score (KPS) and pathology of the tumor, have been shown to have an impact on the risk of postsurgical complications. Advancement in preoperative and intraoperative adjunct technology such as cortical mapping and navigation has improved the surgeon's ability to safely and maximally resect the tumors. It is therefore important to understand the perioperative complications after craniotomy and tumor resection and factors affecting morbidity and mortality in order for surgeons to optimally select and counsel patients who will benefit the most from surgical resection. This chapter will focus on the complications associated with craniotomy for intrinsic glioma and ways of avoiding these events.
Collapse
Affiliation(s)
- Christina Jackson
- Department of Neurosurgery, Johns Hopkins Hospital, Baltimore, MD, USA
| | - Manfred Westphal
- Department of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | |
Collapse
|
46
|
Abstract
Pulmonary complications are a major cause of morbidity and mortality in the post-operative period after thoracotomy. The type of complications and the severity of complications depend on the type of thoracic surgery that has been performed as well as on the patient's pre-operative medical status. Risk stratification can help in predicting the possibility of the post-operative complications. Certain airway complications are more prone to develop with thoracic surgery. Vocal cord injuries, bronchopleural fistulae, pulmonary emboli and post-thoracic surgery non-cardiogenic pulmonary oedema are some of the unique complications that occur in this subset of patients. The major pulmonary complications such as atelectasis, bronchospasm and pneumonia can lead to respiratory failure. This review was compiled after a search for search terms within 'post-operative pulmonary complications after thoracic surgery and thoracotomy' on search engines including PubMed and standard text references on the subject from 2000 to 2015.
Collapse
Affiliation(s)
- Saikat Sengupta
- Department of Anaesthesia, Apollo Hospitals Education and Research Foundation, Apollo Gleneagles Hospitals, Kolkata, West Bengal, India
| |
Collapse
|
47
|
Cimsit NC, Cimsit C, Onaygil C, Kuzan TY. Correlation of clot distribution with morphometric measurements and pleuroparenchymal findings in acute pulmonary embolism: experience with 692 cases. Clin Imaging 2015; 39:1012-7. [DOI: 10.1016/j.clinimag.2015.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 05/19/2015] [Accepted: 07/06/2015] [Indexed: 11/27/2022]
|
48
|
Shopp JD, Stewart LK, Emmett TW, Kline JA. Findings From 12-lead Electrocardiography That Predict Circulatory Shock From Pulmonary Embolism: Systematic Review and Meta-analysis. Acad Emerg Med 2015; 22:1127-37. [PMID: 26394330 DOI: 10.1111/acem.12769] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Revised: 05/28/2015] [Accepted: 06/02/2015] [Indexed: 01/09/2023]
Abstract
OBJECTIVES Treatment guidelines for acute pulmonary embolism (PE) recommend risk stratifying patients to assess PE severity, as those at higher risk should be considered for therapy in addition to standard anticoagulation to prevent right ventricular (RV) failure, which can cause hemodynamic collapse. The hypothesis was that 12-lead electrocardiography (ECG) can aid in this determination. The objective of this study was to measure the prognostic value of specific ECG findings (the Daniel score, which includes heart rate > 100 beats/min, presence of the S1Q3T3 pattern, incomplete and complete right bundle branch block [RBBB], and T-wave inversion in leads V1-V4, plus ST elevation in lead aVR and atrial fibrillation suggestive of RV strain from acute pulmonary hypertension), in patients with acute PE. METHODS Studies were identified by a structured search of MEDLINE, PubMed, EMBASE, the Cochrane library, Google Scholar, Scopus, and bibliographies in October 2014. Case reports, non-English papers, and those that lacked either patient outcomes or ECG findings were excluded. Papers with evidence of a predefined reference standard for PE and the results of 12-lead ECG, stratified by outcome (hemodynamic collapse, defined as circulatory shock requiring vasopressors or mechanical ventilation, or in hospital or death within 30 days) were included. Papers were assessed for selection and publication bias. The authors also assessed heterogeneity (I(2) ) and calculated the odds ratios (OR) for each ECG sign from the random effects model if I(2) > 24% and fixed effects if I(2) < 25%. Funnel plots were used to examine for publication bias. RESULTS Forty-five full-length studies of 8,209 patients were analyzed. The most frequent ECG signs found in patients with acute PE were tachycardia (38%), T-wave inversion in lead V1 (38%), and ST elevation in lead aVR (36%). Ten studies with 3,007 patients were included for full analysis. Six ECG findings (heart rate > 100 beats/min, S1Q3T3, complete RBBB, inverted T waves in V1-V4, ST elevation in aVR, and atrial fibrillation) had likelihood and ORs with lower-limit 95% confidence intervals above unity, suggesting them to be significant predictors of hemodynamic collapse and 30-day mortality. OR data showed no evidence of publication bias, but the proportions of patients with hemodynamic collapse or death and S1Q3T3 and RBBB tended to be higher in smaller studies. Patients who were outcome-negative had a significantly lower mean ± SD Daniel score (2.6 ± 1.5) than patients with hemodynamic collapse (5.9 ± 3.9; p = 0.039, ANOVA with Dunnett's post hoc), but not patients with all-cause 30-day mortality (4.9 ± 3.3; p = 0.12). CONCLUSIONS This systematic review and meta-analysis revealed 10 studies, including 3,007 patients with acute PE, that demonstrate that six findings of RV strain on 12-lead ECG (heart rate > 100 beats/min, S1Q3T3, complete RBBB, inverted T waves in V1-V4, ST elevation in aVR, and atrial fibrillation) are associated with increased risk of circulatory shock and death.
Collapse
Affiliation(s)
| | | | - Thomas W. Emmett
- Ruth Lilly Medical Library; Indiana University School of Medicine; Indianapolis IN
| | - Jeffrey A. Kline
- Department of Emergency Medicine; Indiana University School of Medicine; Indianapolis IN
- Department of Cellular and Integrative Physiology; Indiana University School of Medicine; Indianapolis IN
| |
Collapse
|
49
|
Abstract
Pulmonary embolism (PE) is a common diagnosis in critical care. Depending on the severity of clot burden, the clinical picture ranges from nearly asymptomatic to cardiovascular collapse. The signs and symptoms of PE are nonspecific. The clinician must have a high index of suspicion to make the diagnosis. PE is risk stratified into 3 categories: low-risk, submassive, and massive. Submassive PE remains the most challenging with regard to initial and long-term management. Little consensus exists as to the appropriate tests for risk stratification and therapy. This article reviews the current literature and a suggested approach to these patients.
Collapse
Affiliation(s)
- Laurence W Busse
- Section of Critical Care Medicine, Department of Medicine, Inova Fairfax Medical Center, 3300 Gallows Road, Falls Church, VA 22042, USA.
| | - Jason S Vourlekis
- Section of Critical Care Medicine, Department of Medicine, Inova Fairfax Medical Center, 3300 Gallows Road, Falls Church, VA 22042, USA
| |
Collapse
|
50
|
Software-Based Hybrid Perfusion SPECT/CT Provides Diagnostic Accuracy When Other Pulmonary Embolism Imaging Is Indeterminate. Nucl Med Mol Imaging 2015; 49:303-11. [PMID: 26550050 DOI: 10.1007/s13139-015-0359-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 07/22/2015] [Accepted: 07/28/2015] [Indexed: 01/01/2023] Open
Abstract
PURPOSE To investigate the diagnostic performance of perfusion single-photon emission computed tomography/computed tomography (Q-SPECT/CT) in patients suspected to have pulmonary embolism (PE) but with indeterminate computed tomographic pulmonary angiography (CTPA) or planar ventilation/perfusion (V/Q) scans. METHODS This retrospective study included two groups of patients. Group I consisted of 49 patients with nondiagnostic CTPA. These 49 patients underwent subsequent V/Q scans. Further Q-SPECTs were obtained in patients with indeterminate planar images and fused with existing CTPA. Group II consisted of 182 non-CTPA patients with indeterminate V/Q scans. These 182 patients underwent further Q-SPECT and separate noncontrast low-dose CT chest. Fusion Q-SPECT/CT scans were obtained through FDA-approved software and interpreted according to published criteria as positive, negative, or indeterminate for PE. Upon retrospective analyses, the final diagnosis was made using composite reference standards including all available clinical and imaging information for at least 6-month follow-up. RESULTS In group I patients, 1 was positive, 24 were negative, and another 24 (49 %, 24/49) were indeterminate. In the subsequent 24 Q-SPECT/CTPAs, 4 were positive, 19 were negative, and 1 was indeterminate (4.2 %, 1/24). In group II patients, 9 (4.9 %, 9/182) were indeterminate, 33 were positive, and 140 were negative. The combined nondiagnostic rate for Q-SPECT/CT was only 4.9 % (10/206). There was six false-negative and one false-positive Q-SPECT/CT examinations. The sensitivity, specificity, and positive and negative predictive value of Q-SPECT/CT were 85.7 % (36/42), 99.4 % (153/154), 97.3 % (36/37) and 96.2 % (153/159), respectively. CONCLUSIONS Q-SPECT/CT improves the diagnostic rate with promising accuracy in diagnosing PE that yields a satisfactory clinical verdict, especially when the CTPA and planar V/Q scan are indeterminate.
Collapse
|