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Zhai Z, Boon GJAM, Staring M, van Dam LF, Kroft LJM, Hernández Girón I, Ninaber MK, Bogaard HJ, Meijboom LJ, Vonk Noordegraaf A, Huisman MV, Klok FA, Stoel BC. Automated quantification of the pulmonary vasculature in pulmonary embolism and chronic thromboembolic pulmonary hypertension. Pulm Circ 2023; 13:e12223. [PMID: 37128354 PMCID: PMC10148047 DOI: 10.1002/pul2.12223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/30/2023] [Accepted: 03/31/2023] [Indexed: 05/03/2023] Open
Abstract
The shape and distribution of vascular lesions in pulmonary embolism (PE) and chronic thromboembolic pulmonary hypertension (CTEPH) are different. We investigated whether automated quantification of pulmonary vascular morphology and densitometry in arteries and veins imaged by computed tomographic pulmonary angiography (CTPA) could distinguish PE from CTEPH. We analyzed CTPA images from a cohort of 16 PE patients, 6 CTEPH patients, and 15 controls. Pulmonary vessels were extracted with a graph-cut method, and separated into arteries and veins using deep-learning classification. Vascular morphology was quantified by the slope (α) and intercept (β) of the vessel radii distribution. To quantify lung perfusion defects, the median pulmonary vascular density was calculated. By combining these measurements with densities measured in parenchymal areas, pulmonary trunk, and descending aorta, a static perfusion curve was constructed. All separate quantifications were compared between the three groups. No vascular morphology differences were detected in contrast to vascular density values. The median vascular density (interquartile range) was -567 (113), -452 (95), and -470 (323) HU, for the control, PE, and CTEPH group. The static perfusion curves showed different patterns between groups, with a statistically significant difference in aorta-pulmonary trunk gradient between the PE and CTEPH groups (p = 0.008). In this proof of concept study, not vasculature morphology but densities differentiated between patients of three groups. Further technical improvements are needed to allow for accurate differentiation between PE and CTEPH, which in this study was only possible statistically by measuring the density gradient between aorta and pulmonary trunk.
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Affiliation(s)
- Zhiwei Zhai
- Division of Image Processing, Department of RadiologyLeiden University Medical CenterLeidenThe Netherlands
| | - Gudula J. A. M. Boon
- Department of Medicine ‐ Thrombosis and HemostasisLeiden University Medical CenterLeidenThe Netherlands
| | - Marius Staring
- Division of Image Processing, Department of RadiologyLeiden University Medical CenterLeidenThe Netherlands
| | - Lisette F. van Dam
- Department of Medicine ‐ Thrombosis and HemostasisLeiden University Medical CenterLeidenThe Netherlands
| | - Lucia J. M. Kroft
- Department of RadiologyLeiden University Medical CenterLeidenThe Netherlands
| | - Irene Hernández Girón
- Division of Image Processing, Department of RadiologyLeiden University Medical CenterLeidenThe Netherlands
| | - Maarten K. Ninaber
- Department of PulmonologyLeiden University Medical CenterLeidenThe Netherlands
| | - Harm Jan Bogaard
- Department of Pulmonary Medicine, Amsterdam Cardiovascular Sciences, Amsterdam UMCVrije Universiteit AmsterdamAmsterdamThe Netherlands
| | - Lilian J. Meijboom
- Department of Radiology and Nuclear Medicine, Amsterdam UMCVrije Universiteit AmsterdamAmsterdamThe Netherlands
| | - Anton Vonk Noordegraaf
- Department of Pulmonary Medicine, Amsterdam Cardiovascular Sciences, Amsterdam UMCVrije Universiteit AmsterdamAmsterdamThe Netherlands
| | - Menno V. Huisman
- Department of Medicine ‐ Thrombosis and HemostasisLeiden University Medical CenterLeidenThe Netherlands
| | - Frederikus A. Klok
- Department of Medicine ‐ Thrombosis and HemostasisLeiden University Medical CenterLeidenThe Netherlands
| | - Berend C. Stoel
- Division of Image Processing, Department of RadiologyLeiden University Medical CenterLeidenThe Netherlands
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2
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Jenab Y, Hosseini K, Esmaeili Z, Tofighi S, Ariannejad H, Sotoudeh H. Prediction of in-hospital adverse clinical outcomes in patients with pulmonary thromboembolism, machine learning based models. Front Cardiovasc Med 2023; 10:1087702. [PMID: 36998977 PMCID: PMC10043172 DOI: 10.3389/fcvm.2023.1087702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 02/27/2023] [Indexed: 03/18/2023] Open
Abstract
BackgroundPulmonary thromboembolism (PE) is the third leading cause of cardiovascular events. The conventional modeling methods and severity risk scores lack multiple laboratories, paraclinical and imaging data. Data science and machine learning (ML) based prediction models may help better predict outcomes.Materials and methodsIn this retrospective registry-based design, all consecutive hospitalized patients diagnosed with pulmonary thromboembolism (based on pulmonary CT angiography) from 2011 to 2019 were recruited. ML based algorithms [Gradient Boosting (GB) and Deep Learning (DL)] were applied and compared with logistic regression (LR) to predict hemodynamic instability and/or all-cause mortality.ResultsA total number of 1,017 patients were finally enrolled in the study, including 465 women and 552 men. Overall incidence of study main endpoint was 9.6%, (7.2% in men and 12.4% in women; p-value = 0.05). The overall performance of the GB model is better than the other two models (AUC: 0.94 for GB vs. 0.88 and 0.90 for DL and LR models respectively). Based on GB model, lower O2 saturation and right ventricle dilation and dysfunction were among the strongest adverse event predictors.ConclusionML-based models have notable prediction ability in PE patients. These algorithms may help physicians to detect high-risk patients earlier and take appropriate preventive measures.
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Affiliation(s)
- Yaser Jenab
- Tehran Heart Center, Cardiovascular Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Kaveh Hosseini
- Tehran Heart Center, Cardiovascular Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Esmaeili
- Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeed Tofighi
- Tehran Heart Center, Cardiovascular Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
- Correspondence: Saeed Tofighi
| | - Hamid Ariannejad
- Tehran Heart Center, Cardiovascular Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Houman Sotoudeh
- Department of Radiology, University of Alabama at Birmingham (UAB), Birmingham, AL, United States
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Boon GJAM, Jairam PM, Groot GMC, van Rooden CJ, Ende-Verhaar YM, Beenen LFM, Kroft LJM, Bogaard HJ, Huisman MV, Symersky P, Vonk Noordegraaf A, Meijboom LJ, Klok FA. Identification of chronic thromboembolic pulmonary hypertension on CTPAs performed for diagnosing acute pulmonary embolism depending on level of expertise. Eur J Intern Med 2021; 93:64-70. [PMID: 34294517 DOI: 10.1016/j.ejim.2021.07.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/30/2021] [Accepted: 07/08/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND Expert reading often reveals radiological signs of chronic thromboembolic pulmonary hypertension (CTEPH) or chronic PE on computed tomography pulmonary angiography (CTPA) performed at the time of acute pulmonary embolism (PE) presentation preceding CTEPH. Little is known about the accuracy and reproducibility of CTPA reading by radiologists in training in this setting. OBJECTIVES To evaluate 1) whether signs of CTEPH or chronic PE are routinely reported on CTPA for suspected PE; and 2) whether CTEPH-non-expert readers achieve comparable predictive accuracy to CTEPH-expert radiologists after dedicated instruction. METHODS Original reports of CTPAs demonstrating acute PE in 50 patients whom ultimately developed CTEPH, and those of 50 PE who did not, were screened for documented signs of CTEPH. All scans were re-assessed by three CTEPH-expert readers and two CTEPH-non-expert readers (blinded and independently) for predefined signs and overall presence of CTEPH. RESULTS Signs of chronic PE were mentioned in the original reports of 14/50 cases (28%), while CTEPH-expert radiologists had recognized 44/50 (88%). Using a standardized definition (≥3 predefined radiological signs), moderate-to-good agreement was reached between CTEPH-non-expert readers and the experts' consensus (k-statistics 0.46; 0.61) at slightly lower sensitivities. The CTEPH-non-expert readers had moderate agreement on the presence of CTEPH (κ-statistic 0.38), but both correctly identified most cases (80% and 88%, respectively). CONCLUSIONS Concomitant signs of CTEPH were poorly documented in daily practice, while most CTEPH patients were identified by CTEPH-non-expert readers after dedicated instruction. These findings underline the feasibility of achieving earlier CTEPH diagnosis by assessing CTPAs more attentively.
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Affiliation(s)
- Gudula J A M Boon
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands.
| | - Pushpa M Jairam
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Gerie M C Groot
- Department of Radiology, Medical Center Gelderse Vallei, Ede, the Netherlands
| | | | - Yvonne M Ende-Verhaar
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | - Ludo F M Beenen
- Department of Radiology, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Lucia J M Kroft
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Harm Jan Bogaard
- Department of Pulmonary Medicine, Amsterdam Cardiovascular Sciences, Amsterdam UMC, VU University Medical Center, Amsterdam, the Netherlands
| | - Menno V Huisman
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | - Petr Symersky
- Department of Cardiothoracic Surgery, Amsterdam UMC, VU University Medical Center, Amsterdam, the Netherlands
| | - Anton Vonk Noordegraaf
- Department of Pulmonary Medicine, Amsterdam Cardiovascular Sciences, Amsterdam UMC, VU University Medical Center, Amsterdam, the Netherlands
| | - Lilian J Meijboom
- Department of Radiology and Nuclear Medicine, Amsterdam Cardiovascular Sciences, Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands
| | - Frederikus A Klok
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
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4
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Cozzi D, Moroni C, Cavigli E, Bindi A, Caviglioli C, Nazerian P, Vanni S, Miele V, Bartolucci M. Prognostic value of CT pulmonary angiography parameters in acute pulmonary embolism. Radiol Med 2021; 126:1030-1036. [PMID: 33961187 DOI: 10.1007/s11547-021-01364-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVES Computed tomographic pulmonary angiography (CTPA) is the first-line test in acute pulmonary embolism (APE) diagnostic algorithm, but its correlation with short-term outcome remains not clear at all. The aim is to determine whether CTPA findings can predict 30-day mortality of patients with APE in Emergency Department. METHODS This retrospective monocentric study involved 780 patients with APE diagnosed at the Emergency Department of our institution (period 2010-2019). These CTPA findings were evaluated: embolic obstruction burden score (Qanadli score), common pulmonary artery trunk diameter, right-to-left ventricular ratio, azygos vein and coronary sinus diameters. Comorbidities and fatal/nonfatal adverse outcomes within 30 days were recorded. Troponin I values were correlated with angiographic parameters with multiple logistic regression analysis. RESULTS The all-cause and APE-related 30-day mortality rates were 5.9% and 3.6%, respectively. Patients who died within 30 days were older with higher prevalence rates of malignancy. Qanadli score and all CTPA parameters correlate with Troponin I level and the presence of RVD at echocardiography (p values < 0.0001). Instead, RV/LV ratio and coronary sinus diameter correlate with 30-day mortality (p values < 0.05). At the multivariate logistic regression analysis, only coronary sinus and RVD remained significant with an HR = 2.5 (95% CI 1.1-5.6) and HR = 1.9 (95% CI 0.95-3.7), respectively. CONCLUSION CTPA quantification of right ventricular strain is an accurate predictor of 30-day mortality. In particular, it seems that a dilated coronary sinus (>9 mm) has an additional prognostic value in association with echocardiographic signs of right-heart disfunction and high Troponin I levels.
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Affiliation(s)
- Diletta Cozzi
- Department of Emergency Radiology, Careggi University Hospital, L.go Brambilla 3, 50134, Florence, Italy.
| | - Chiara Moroni
- Department of Emergency Radiology, Careggi University Hospital, L.go Brambilla 3, 50134, Florence, Italy
| | - Edoardo Cavigli
- Department of Emergency Radiology, Careggi University Hospital, L.go Brambilla 3, 50134, Florence, Italy
| | - Alessandra Bindi
- Department of Emergency Radiology, Careggi University Hospital, L.go Brambilla 3, 50134, Florence, Italy
| | - Cosimo Caviglioli
- Department of Emergency Medicine, Careggi University Hospital, Florence, Italy
| | - Peiman Nazerian
- Department of Emergency Medicine, Careggi University Hospital, Florence, Italy
| | - Simone Vanni
- Department of Emergency Medicine, San Giuseppe Hospital, Empoli, Italy
| | - Vittorio Miele
- Department of Emergency Radiology, Careggi University Hospital, L.go Brambilla 3, 50134, Florence, Italy
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5
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van Dam LF, Kroft LJM, Huisman MV, Ninaber MK, Klok FA. Computed Tomography Pulmonary Perfusion for Prediction of Short-Term Clinical Outcome in Acute Pulmonary Embolism. TH OPEN 2021; 5:e66-e72. [PMID: 33585787 PMCID: PMC7875679 DOI: 10.1055/s-0041-1723782] [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: 11/10/2020] [Accepted: 12/18/2020] [Indexed: 11/18/2022] Open
Abstract
Background
Computed tomography pulmonary angiography (CTPA) is the imaging modality of choice for the diagnosis of acute pulmonary embolism (PE). With computed tomography pulmonary perfusion (CTPP) additional information on lung perfusion can be assessed, but its value in PE risk stratification is unknown. We aimed to evaluate the correlation between CTPP-assessed perfusion defect score (PDS) and clinical presentation and its predictive value for adverse short-term outcome of acute PE.
Patients and Methods
This was an exploratory, observational study in 100 hemodynamically stable patients with CTPA-confirmed acute PE in whom CTPP was performed as part of routine clinical practice. We calculated the difference between the mean PDS in patients with versus without chest pain, dyspnea, and hemoptysis and 7-day adverse outcome. Multivariable logistic regression analysis and likelihood-ratio test were used to assess the added predictive value of PDS to CTPA parameters of right ventricle dysfunction and total thrombus load, for intensive care unit admission, reperfusion therapy and PE-related death.
Results
We found no correlation between PDS and clinical symptoms. PDS was correlated to reperfusion therapy (
n
= 4 with 16% higher PDS, 95% confidence interval [CI]: 3.5–28%) and PE-related mortality (
n
= 2 with 22% higher PDS, 95% CI: 4.9–38). Moreover, PDS had an added predictive value to CTPA assessment for PE-related mortality (from Chi-square 14 to 19,
p
= 0.02).
Conclusion
CTPP-assessed PDS was not correlated to clinical presentation of acute PE. However, PDS was correlated to reperfusion therapy and PE-related mortality and had an added predictive value to CTPA-reading for PE-related mortality; this added value needs to be demonstrated in larger studies.
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Affiliation(s)
- Lisette F van Dam
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
| | - Lucia J M Kroft
- Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Menno V Huisman
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
| | - Maarten K Ninaber
- Department of Pulmonology, Leiden University Medical Center, Leiden, The Netherlands
| | - Frederikus A Klok
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
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Singh S, Lewis MI. Evaluating the Right Ventricle in Acute and Chronic Pulmonary Embolism: Current and Future Considerations. Semin Respir Crit Care Med 2021; 42:199-211. [PMID: 33548932 DOI: 10.1055/s-0040-1722290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The right ventricle (RV), due to its morphologic and physiologic differences, is susceptible to sudden increase in RV afterload, as noted in patients with acute pulmonary embolism (PE). Functional impairment of RV function is a stronger presage of adverse outcomes in acute PE than the location or burden of emboli. While current iterations of most clinical prognostic scores do not incorporate RV dysfunction, advancements in imaging have enabled more granular and accurate assessment of RV dysfunction in acute PE. RV enlargement and dysfunction on imaging is noted only in a subset of patients with acute PE and is dependent on underlying cardiopulmonary reserve and clot burden. Specific signs like McConnell's and "60/60" sign are noted in less than 20% of patients with acute PE. About 2% of patients with acute PE develop chronic thromboembolic pulmonary hypertension, characterized by continued deterioration in RV function in a subset of patients with a continuum of RV function from preserved to overt right heart failure. Advances in molecular and other imaging will help better characterize RV dysfunction in this population and evaluate the response to therapies.
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Affiliation(s)
- Siddharth Singh
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Michael I Lewis
- Division of Pulmonary and Critical Care Medicine, Cedars-Sinai Medical Center, Los Angeles, California
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Age-associated changes in 4D flow CMR derived Tricuspid Valvular Flow and Right Ventricular Blood Flow Kinetic Energy. Sci Rep 2020; 10:9908. [PMID: 32555252 PMCID: PMC7303161 DOI: 10.1038/s41598-020-66958-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 04/20/2020] [Indexed: 12/30/2022] Open
Abstract
Assessment of right ventricular (RV) diastolic function is not routinely carried out. This is due to standard two-dimensional imaging techniques being unreliable. Four-dimensional flow (4D flow) derived right ventricular blood flow kinetic energy assessment could circumvent the issues of the current imaging modalities. It also remains unknown whether there is an association between right ventricular blood flow kinetic energy (KE) and healthy ageing. We hypothesise that healthy ageing requires maintaining normal RV intra-cavity blood flow as quantified using KE method. The main objective of this study was to investigate the effect of healthy ageing on tricuspid through-plane flow and right ventricular blood flow kinetic energy. In this study, fifty-three healthy participants received a 4D flow cardiovascular magnetic resonance (CMR) scan on 1.5 T Philips Ingenia. Cine segmentation and 4D flow analysis were performed using dedicated software. Standard statistical methods were carried out to investigate the associations. Both RV E-wave KEiEDV (r = −0.3, P = 0.04) and A-wave KEiEDV (r = 0.42, P < 0.01) showed an association with healthy ageing. Additionally, the right ventricular blood flow KEiEDV E/A ratio demonstrated the strongest association with healthy ageing (r = −0.53, P < 0.01) when compared to all RV functional and haemodynamic parameters. Furthermore, in a multivariate regression model, KEiEDV E/A ratio and 4D flow derived tricuspid valve stroke volume demonstrated independent association to healthy ageing (beta −0.02 and 0.68 respectively, P < 0.01). Ageing is independently associated with 4D flow derived tricuspid stroke volume and RV blood flow KE E/A ratio. These novel 4D flow CMR derived imaging markers have future potential for RV diastolic assessment.
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8
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Boon GJAM, van Rein N, Bogaard HJ, Ende-Verhaar YM, Huisman MV, Kroft LJM, van der Meer FJM, Meijboom LJ, Symersky P, Vonk Noordegraaf A, Klok FA. Quality of initial anticoagulant treatment and risk of CTEPH after acute pulmonary embolism. PLoS One 2020; 15:e0232354. [PMID: 32343741 PMCID: PMC7188241 DOI: 10.1371/journal.pone.0232354] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 04/13/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The pathophysiology of chronic thromboembolic pulmonary hypertension (CTEPH) is not fully understood. Poor-quality anticoagulation may contribute to a higher risk of CTEPH after acute pulmonary embolism (PE), partly explaining the transition from acute PE to CTEPH. We assessed the association between the time in therapeutic range (TTR) of vitamin-K antagonist (VKA) treatment and incidence of CTEPH after a PE diagnosis. METHODS Case-control study in which the time spent in, under and above therapeutic range was calculated in 44 PE patients who were subsequently diagnosed with CTEPH (cases). Controls comprised 150 consecutive PE patients in whom echocardiograms two years later did not show pulmonary hypertension. All patients were treated with VKA for at least 6 months after the PE diagnosis. Time in (TTR), under and above range were calculated. Mean differences between cases and controls were estimated by linear regression. RESULTS Mean TTR during the initial 6-month treatment period was 72% in cases versus 78% in controls (mean difference -6%, 95%CI -12 to -0.1), mainly explained by more time above the therapeutic range in the cases. Mean difference of time under range was 0% (95%CI -6 to 7) and 2% (95CI% -3 to 7) during the first 3 and 6 months, respectively. In a multivariable model, adjusted odds ratios (ORs) for CTEPH were around unity considering different thresholds for 'poor anticoagulation', i.e. TTR <50%, <60% and <70%. CONCLUSION Subtherapeutic initial anticoagulation was not more prevalent among PE patients diagnosed with CTEPH than in those who did not develop CTEPH.
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Affiliation(s)
- Gudula J. A. M. Boon
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
| | - Nienke van Rein
- Department of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Leiden, The Netherlands
| | - Harm Jan Bogaard
- Department of Pulmonary Medicine, Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - Yvonne M. Ende-Verhaar
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
| | - Menno V. Huisman
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
| | - Lucia J. M. Kroft
- Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Felix J. M. van der Meer
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
| | - Lilian J. Meijboom
- Department of Radiology and Nuclear medicine, Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - Petr Symersky
- Department of Cardiac Surgery, VU University Medical Center, Amsterdam, The Netherlands
| | - Anton Vonk Noordegraaf
- Department of Pulmonary Medicine, Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - Frederikus A. Klok
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
- * E-mail:
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Jaber WA, Kabrhel C, Rosenfield K, Tu T, Ouriel K, Tapson VF. Percutaneous Thrombectomy in Emergency Department Patients with Pulmonary Embolism: The FLARE ED Sub-study. J Emerg Med 2020; 58:175-182. [PMID: 32220546 DOI: 10.1016/j.jemermed.2019.11.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 11/08/2019] [Accepted: 11/15/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND The FlowTriever Pulmonary Embolectomy Clinical Study (FLARE) was a multicenter, single-arm trial that demonstrated effectiveness of the FlowTriever percutaneous pulmonary embolectomy system in reducing right ventricular/left ventricular (RV/LV) diameter ratio in patients with acute intermediate-risk pulmonary embolism (PE). Patients diagnosed in emergency departments (EDs) with acute PE may have a different presentation from those diagnosed in an in-hospital setting. OBJECTIVES The goal of this sub-study was to evaluate the safety and effectiveness of mechanical embolectomy in ED patients with acute intermediate-risk PE. METHODS ED patients with acute PE and RV/LV ratio ≥ 0.9 enrolled in the FLARE study were core laboratory analyzed. The primary efficacy endpoint was the change in RV/LV ratio from baseline to 48 h post procedure. The change in RV/LV ratio of patients with nonelevated cardiac troponin (cTn) and zero simplified PE Severity Index (sPESI) score (normal cTn-sPESI: intermediate-low risk) was also examined. Major adverse events (MAEs) included major bleeding, device-related death or clinical deterioration, and vascular or cardiac injury. RESULTS Seventy-six ED patients were included. Thirty-nine had a sPESI score of ≥ 1 and 32 had elevated cTn. The median preprocedure RV/LV ratio for all ED patients was 1.50 (0.88-2.52), with a change by -0.37 postprocedure (p < 0.001.) Three patients experienced MAEs. Seventeen patients (22.4%) presented with normal cTn-sPESI and had an RV/LV ratio reduced by 0.27 (p < 0.001) after embolectomy. CONCLUSION ED patients with intermediate-risk PE had significant improvement in their RV/LV ratio and low complication rates when treated with mechanical embolectomy, irrespective of their baseline cTn-sPESI risk score.
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Affiliation(s)
- Wissam A Jaber
- Interventional Cardiology, Emory University Hospital, Atlanta, Georgia
| | - Christopher Kabrhel
- Department of Emergency Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - Kenneth Rosenfield
- Vascular Medicine and Intervention, Massachusetts General Hospital, Boston, Massachusetts
| | - Thomas Tu
- General and Interventional Cardiology, Baptist Health Louisville, Louisville, Kentucky
| | | | - Victor F Tapson
- Division of Pulmonary/Critical Care, Cedars-Sinai Medical Center, Los Angeles, California
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10
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The Results of Thrombolytic Treatment in Patients With High-risk Pulmonary Embolism. JOURNAL OF CARDIOVASCULAR EMERGENCIES 2019. [DOI: 10.2478/jce-2019-0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Background: Mortality rates due to massive pulmonary embolism (PE) are much higher than estimated. Although thrombolytic therapy is controversial, it can be a life-saving procedure and can be safely used in patients with massive PE.
Study aim: We aimed to share the results of thrombolytic treatment in patients with massive PE.
Material and methods: We retrospectively evaluated 72 patients with PE admitted between January 2010 and April 2018 to the Department of Pulmonary Medicine, VM Medicalpark Samsun Hospital, Samsun, Turkey. The data of patients who received thrombolytic treatment were retrospectively analyzed.
Results: The female to male ratio was 24/48, with a mean age of 62.7 ± 12.6 (minimum 27, maximum 88) years. The diagnosis of massive PE was established with echocardiography in all patients and was confirmed via pulmonary CT angiography in 45 patients (62.5%) who presented an appropriate clinical status for this imaging technique. The most common symptoms were dyspnea (90.3%), chest pain (83.3%), and syncope (40.2%). The S1Q3T3 electrocardiography pattern was noted in 82% of patients, who rapidly recovered after thrombolytic therapy. Cardiopulmonary arrest was seen in 25 patients (37.2%), and thrombolytic treatment was administered during cardiopulmonary resuscitation in 18% (n = 13) of patients. The survival rate was 30.7% (n = 4) in patients with cardiopulmonary arrest who received thrombolytic treatment in the emergency room. The complications of rt-PA treatment included minor hemorrhages in 6.4% (n = 5), major hemorrhages in 2.7% (n = 2), and allergic reactions in 1.3% (n = 1) of patients. None of the patients had deceased as a complication of thrombolytic treatment. The overall mortality rate was 26.2% (n = 19), and 12.5% (n = 9) of the patients have died in first 24 hours after thrombolysis.
Conclusions: We concluded that the risk factors, ECG, and echocardiography are key indicators for the suspicion of massive PE in patients with hemodynamic shock. Based on our experience, early thrombolytic therapy is a life-saving intervention in patients with diagnosed and/or suspected massive PE.
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11
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Usefulness of standard computed tomography pulmonary angiography performed for acute pulmonary embolism for identification of chronic thromboembolic pulmonary hypertension: results of the InShape III study. J Heart Lung Transplant 2019; 38:731-738. [DOI: 10.1016/j.healun.2019.03.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 02/28/2019] [Accepted: 03/05/2019] [Indexed: 02/05/2023] Open
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Degen C, Poechtrager S, Leibundgut G. Fulminant pulmonary embolism with fatal outcome in a patient with low clinical prediction scores. BMJ Case Rep 2018; 2018:bcr-2018-224793. [PMID: 29898910 PMCID: PMC6011495 DOI: 10.1136/bcr-2018-224793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2018] [Indexed: 11/03/2022] Open
Abstract
We present a case of a 72-year-old man with submassive acute pulmonary thromboembolism. Pulmonary embolism severity index Score and common clinical risk stratification recommended systemic anticoagulation and a clinical course without complications was expected. A primary reperfusion strategy was not indicated by the current guidelines. Under established anticoagulation, the patient was found in cardiac arrest immediately after mobilisation from the bed the next morning. Right heart catheterisation under ongoing resuscitation revealed a complete obstruction of the right pulmonary artery by a big thrombus. Catheter-directed intervention trying to bypass the thrombus with interventional guidewires failed. Ultimately, the patient died from acute right heart failure. The current case raises concern that the prediction scores available for pulmonary embolism may insufficiently predict short-term outcome in isolated patients.
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Affiliation(s)
- Christian Degen
- Department of Medicine, Kantonsspital Baselland, Liestal, Switzerland
| | | | - Gregor Leibundgut
- Department of Cardiology, Kantonsspital Baselland, University of Basel, Basel, Switzerland
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Abstract
Pulmonary embolism (PE) is caused by emboli, which have originated from venous thrombi, travelling to and occluding the arteries of the lung. PE is the most dangerous form of venous thromboembolism, and undiagnosed or untreated PE can be fatal. Acute PE is associated with right ventricular dysfunction, which can lead to arrhythmia, haemodynamic collapse and shock. Furthermore, individuals who survive PE can develop post-PE syndrome, which is characterized by chronic thrombotic remains in the pulmonary arteries, persistent right ventricular dysfunction, decreased quality of life and/or chronic functional limitations. Several important improvements have been made in the diagnostic and therapeutic management of acute PE in recent years, such as the introduction of a simplified diagnostic algorithm for suspected PE as well as phase III trials demonstrating the value of direct oral anticoagulants in acute and extended treatment of venous thromboembolism. Future research should aim to address novel treatment options (for example, fibrinolysis enhancers) and improved methods for predicting long-term complications and defining optimal anticoagulant therapy parameters in individual patients, and to gain a greater understanding of post-PE syndrome.
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Ende-Verhaar YM, Kroft LJM, Mos ICM, Huisman MV, Klok FA. Accuracy and reproducibility of CT right-to-left ventricular diameter measurement in patients with acute pulmonary embolism. PLoS One 2017; 12:e0188862. [PMID: 29182657 PMCID: PMC5705138 DOI: 10.1371/journal.pone.0188862] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 11/14/2017] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Right ventricular (RV) dysfunction caused by acute pulmonary embolism (PE) is associated with poor short- and long-term prognosis. RV dilatation as a proxy for RV dysfunction can be assessed by calculating the right-to-left ventricle diameter (RV/LV) ratio on standard computed tomography pulmonary angiography (CTPA) images. It is unknown whether dedicated training is required to accurately and reproducibly measure RV/LV ratio therefore we aimed to assess these parameters in residents in internal medicine without experience in CTPA reading. METHODS CTPA images of 100 patients with PE were assessed by three residents after single instruction, and one experienced thoracic radiologist. Maximum diameters were evaluated in the axial view by measuring the distance between the ventricular endocardium and the interventricular septum, perpendicular to the long axis of the heart. RV dilatation was defined as a ratio of ≥1.0. Interobserver accuracy and reproducibility was determined using Kappa statistics, Bland-Altman analysis and Spearman's rank correlation. RESULTS The kappa statistic for the presence of RV dilatation of the residents compared to the experienced radiologist ranged from 0.83-0.94. The average interobserver difference in calculated RV/LV ratio's (±SD) between the three residents was: -0.01 (SD0.11), 0.07 (SD0.14) and 0.06 (SD0.18) with an overall mean RV/LV diameter ratio of 1.04. In line with this, Spearman's rank correlation coefficients were 0.92, 0.88 and 0.85 respectively indicating very good correlation (p<0.01 for all). CONCLUSION After simple instruction, RV/LV diameter ratio assessment on CTPA images by clinical residents is accurate and reproducible, which is of help in identifying PE patients at risk.
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Affiliation(s)
- Yvonne M. Ende-Verhaar
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
- * E-mail:
| | - Lucia J. M. Kroft
- Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Inge C. M. Mos
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
| | - Menno V. Huisman
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
| | - Frederikus A. Klok
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
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Klok FA, van der Bijl N, de Roos A, Kroft LJM, Huisman MV, Pasha SM. NT-pro-BNP levels in patients with acute pulmonary embolism are correlated to right but not left ventricular volume and function. Thromb Haemost 2017; 108:367-72. [DOI: 10.1160/th11-12-0901] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Accepted: 05/09/2012] [Indexed: 11/05/2022]
Abstract
SummaryN-terminal pro-Brain Natriuretic Peptide (NT-pro-BNP) is primarily secreted by left ventricular (LV) stretch and wall tension. Notably, NT-pro-BNP is a prognostic marker in acute pulmonary embolism (PE), which primarily stresses the right ventricle (RV). We sought to evaluate the relative contribution of the RV to NT-pro-BNP levels during PE. A posthoc analysis of an observational prospective outcome study in 113 consecutive patients with computed tomography (CT)-proven PE and 226 patients in whom PE was clinically suspected but ruled out by CT. In all patients RV and LV function was established by assessing ECG-triggered-CT measured ventricular end-diastolic-volumes and ejection fraction (EF). NT-pro-BNP was assessed in all patients. The correlation between RV and LV end-diastolic-volumes and systolic function was evaluated by multiple linear regression corrected for known con-founders. In the PE cohort increased RVEF (β-coefficient (95% confidence interval [CI]) –0.044 (± –0.011); p<0.001) and higher RV enddiastolic-volume (β-coefficient 0.005 (± 0.001); p<0.001) were significantly correlated to NT-pro-BNP, while no correlation was found with LVEF ( β-coefficient 0.005 (± 0.010); p=0.587) and LV end-diastolic-volume (β-coefficient –0.003 (± 0.002); p=0.074). In control patients without PE we found a strong correlation between NT-pro-BNP levels and LVEF ( β-coefficient –0.027 (± –0.006); p<0.001) although not LV enddiastolic-volume (β-coefficient 0.001 (± 0.001); p=0.418). RVEF (β-co-efficient –0.002 (± –0.006); p=0.802) and RV end-diastolic-volume (β-coefficient <0.001 (± 0.001); p=0.730) were not correlated in patients without PE. In PE patients, lower RVEF and higher RV end-diastolic-volume were significantly correlated to NT-pro-BNP levels as compared to control patients without PE. These observations provide patho-physiological ground for the well-known prognostic value of NT-pro-BNP in acute PE.
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Kroft LJM, Erkens PMG, Douma RA, Mos ICM, Jonkers G, Hovens MMC, Durian MF, Cate HT, Beenen LFM, Kamphuisen PW, Huisman MV, den Exter PL, van Es J. Thromboembolic resolution assessed by CT pulmonary angiography after treatment for acute pulmonary embolism. Thromb Haemost 2017; 114:26-34. [DOI: 10.1160/th14-10-0842] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 02/13/2015] [Indexed: 11/05/2022]
Abstract
SummaryThe systematic assessment of residual thromboembolic obstruction after treatment for acute pulmonary embolism (PE) has been under-studied. This assessment is of potential clinical importance, should clinically suspected recurrent PE occur, or as tool for risk stratification of cardiopulmonary complications or recurrent venous thromboembolism (VTE). This study aimed to assess the rate of PE resolution and its implications for clinical outcome. In this prospective, multi-center cohort study, 157 patients with acute PE diagnosed by CT pulmonary angiography (CTPA) underwent follow-up CTPA-imaging after six months of anticoagulant treatment. Two expert thoracic radiologists independently assessed the presence of residual thromboembolic obstruction. The degree of obstruction at baseline and follow-up was calculated using the Qanadli obstruction index. All patients were followed-up for 2.5 years. At baseline, the median obstruction index was 27.5 %. After six months of treatment, complete PE resolution had occurred in 84.1 % of the patients (95 % confidence interval (CI): 77.4–89.4 %). The median obstruction index of the 25 patients with residual thrombotic obstruction was 5.0 %. During follow-up, 16 (10.2 %) patients experienced recurrent VTE. The presence of residual thromboembolic obstruction was not associated with recurrent VTE (adjusted hazard ratio: 0.92; 95 % CI: 0.2–4.1). This study indicates that the incidence of residual thrombotic obstruction following treatment for PE is considerably lower than currently anticipated. These findings, combined with the absence of a correlation between residual thrombotic obstruction and recurrent VTE, do not support the routine use of follow-up CTPA-imaging in patients treated for acute PE.
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Klok FA, Huisman MV. Management of incidental pulmonary embolism. Eur Respir J 2017; 49:49/6/1700275. [PMID: 28663318 DOI: 10.1183/13993003.00275-2017] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 03/23/2017] [Indexed: 12/26/2022]
Abstract
Incidental pulmonary embolism (PE) is a frequent finding on routine computed tomography (CT) scans of the chest, occurring in 1.1% of coronary CT scans and 3.6% of oncological CT scans. Despite this high frequency, optimal management of incidental PE has not been addressed in clinical trials and remains the subject of debate. Although these CT scans have not been performed with a dedicated PE protocol and have suboptimal contrast enhancement, diagnosis of incidental PE has been shown to be accurate up to the segmental and subsegmental arteries. The embolic load in incidental PE is lower than that in symptomatic PE. Even so, observational studies suggest that the natural course of incidental PE is similar to that of symptomatic PE with regard to the risk of recurrent venous thrombotic disease and mortality. Interestingly, the increased use of more advanced CT technology has coincided with an increase in the rate of incidental subsegmental PE, as is the case for symptomatic subsegmental PE. Although clinical trials are lacking, and observational data are limited to cancer-associated incidental PE, the consensus is that the management of incidental PE is identical to that of symptomatic PE, including the choice of optimal drug class, outpatient treatment and total duration of treatment.
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Affiliation(s)
- Frederikus A Klok
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
| | - Menno V Huisman
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
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18
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Méan M, Tritschler T, Limacher A, Breault S, Rodondi N, Aujesky D, Qanadli SD. Association between computed tomography obstruction index and mortality in elderly patients with acute pulmonary embolism: A prospective validation study. PLoS One 2017; 12:e0179224. [PMID: 28594950 PMCID: PMC5464630 DOI: 10.1371/journal.pone.0179224] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 05/25/2017] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION Computed tomography pulmonary angiography (CTPA) has not only become the method of choice for diagnosing acute pulmonary embolism (PE), it also allows for risk stratification of patients with PE. To date, no study has specifically examined the predictive value of CTPA findings to assess short-term prognosis in elderly patients with acute PE who are particularly vulnerable to adverse outcomes. METHODS We studied 291 patients aged ≥65 years with acute symptomatic PE in a prospective multicenter cohort. Outcomes were 90-day overall and PE-related mortality, recurrent venous thromboembolism (VTE), and length of hospital stay (LOS). We examined associations of the computed tomography obstruction index (CTOI) and the right ventricular (RV) to left ventricular (LV) diameter ratio with mortality and VTE recurrence using survival analysis, adjusting for provoked VTE, Pulmonary Embolism Severity Index (PESI), and anticoagulation as a time-varying covariate. RESULTS Overall, 15 patients died within 90 days. There was no association between the CTOI and 90-day overall mortality (adjusted hazard ratio per 10% CTOI increase 0.92; 95% confidence interval [CI] 0.70-1.21; P = 0.54), but between the CTOI and PE-related 90-day mortality (adjusted sub-hazard ratio per 10% CTOI increase 1.36; 95% CI 1.03-1.81; P = 0.03). The RV/LV diameter ratio was neither associated with overall nor PE-related 90-day mortality. The CTOI and the RV/LV diameter ratio were significantly associated with VTE recurrence and LOS. CONCLUSIONS In elderly patients with acute PE, the CTOI was associated with PE-related 90-day mortality but not with overall 90-day mortality. The RV/LV diameter ratio did not predict mortality. Both measures predicted VTE recurrence and LOS. The evaluated CTPA findings do not appear to offer any advantage over the PESI in terms of mortality prediction.
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Affiliation(s)
- Marie Méan
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Division of General Internal Medicine, Lausanne University Hospital, Lausanne, Switzerland
| | - Tobias Tritschler
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- * E-mail:
| | - Andreas Limacher
- CTU Bern, and Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland
| | - Stéphane Breault
- Department of Radiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Nicolas Rodondi
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland
| | - Drahomir Aujesky
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Salah D. Qanadli
- Department of Radiology, Lausanne University Hospital, Lausanne, Switzerland
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Doğan H, de Roos A, Geleijins J, Huisman MV, Kroft LJM. The role of computed tomography in the diagnosis of acute and chronic pulmonary embolism. Diagn Interv Radiol 2016; 21:307-16. [PMID: 26133321 DOI: 10.5152/dir.2015.14403] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Pulmonary embolism (PE) is a potentially life threatening condition requiring adequate diagnosis and treatment. Computed tomography pulmonary angiography (CTPA) is excellent for including and excluding PE, therefore CT is the first-choice diagnostic imaging technique in patients suspected of having acute PE. Due to its wide availability and low invasiveness, CTPA tends to be overused. Correct implementation of clinical decision rules in diagnostic workup for PE improves adequate use of CT. Also, CT adds prognostic value by evaluating right ventricular (RV) function. CT-assessed RV dysfunction and to lesser extent central emboli location predicts PE-related mortality in normotensive and hypotensive patients, while PE embolic obstruction index has limited prognostic value. Simple RV/left ventricular (LV) diameter ratio measures >1.0 already predict risk for adverse outcome, whereas ratios <1.0 can safely exclude adverse outcome. Consequently, assessing the RV/LV diameter ratio may help identify patients who are potential candidates for treatment at home instead of treatment in the hospital. A minority of patients develop chronic thromboembolic pulmonary hypertension (CTEPH) following acute PE, which is a life-threatening condition that can be diagnosed by CT. In proximal CTEPH, involving the more central pulmonary arteries, thrombectomy usually results in good outcome in terms of both functional status and long-term survival rate. CT is becoming the imaging method of choice for diagnosing CTEPH as it can identify patients who may benefit from thrombectomy. New CT developments such as distensibility measurements and dual-energy or subtraction techniques may further refine diagnosis and prognosis for improved patient care.
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Affiliation(s)
- Halil Doğan
- Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands.
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20
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Prognostic value of computed tomography in acute pulmonary thromboembolism. RADIOLOGIA 2016; 58:391-403. [PMID: 27492053 DOI: 10.1016/j.rx.2016.06.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 06/18/2016] [Accepted: 06/23/2016] [Indexed: 12/14/2022]
Abstract
In addition to being the standard reference for the diagnosis of acute pulmonary thromboembolism, CT angiography of the pulmonary arteries can also provide valuable information about the patient's prognosis. Although which imaging findings are useful for prognosis remains controversial, signs of right ventricular dysfunction on CT are now included in clinical algorithms for the management of pulmonary thromboembolism. However, the optimal method for obtaining these measurements while maintaining a balance between the ease of use necessary to include their evaluation in our daily activity and the loss of precision in its predictive capacity remains to be determined. Moreover, other variables associated with pulmonary thromboembolism that often go unobserved can complement the prognostic information we can offer to clinicians. This review aims to clarify some of the more controversial aspects related to the prognostic value of CT in patients with pulmonary embolisms according to the available evidence. Knowing which variables are becoming more important in the prognosis, how to detect them, and why it is important to include them in our reports will help improve the management of patients with pulmonary embolism.
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21
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van der Bijl N, Klok FA, Huisman MV, de Roos A, Kroft LJM. Coronary or thoracic artery calcium score in provoked and unprovoked pulmonary embolism: a case-control study. J Thromb Haemost 2016; 14:931-5. [PMID: 26865284 DOI: 10.1111/jth.13289] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2015] [Accepted: 12/18/2015] [Indexed: 01/10/2023]
Abstract
UNLABELLED Essentials Patients with unprovoked pulmonary embolism (PE) are at increased risk of arterial thromboembolism. Coronary and thoracic aorta calcium were evaluated in patients with and without (unprovoked) PE. No association was found between (unprovoked) PE and coronary or aortic calcification. Assessment of both calcium scores on computed tomography pulmonary angiography was highly reproducible. SUMMARY Objective To evaluate the potential association between (unprovoked) pulmonary embolism (PE) and the presence and extent of coronary artery calcium (CAC) and thoracic aorta calcium (TAC). Methods CAC and TAC derived from computed tomography pulmonary angiography of 100 patients with PE were compared to that of 100 patients in whom PE was ruled out. Results Intraobserver and interobserver agreements for both TAC and CAC were excellent (intraclass correlation > 0.95 for both). In patients with PE vs. patients without PE, no significant differences were found in the presence of CAC or TAC (CAC 64% vs. 67%, odds ratio [OR] 1.0, 95% confidence interval [CI] 0.67-1.6; TAC 46% vs. 59%, OR 1.2, 95% CI 0.80-2.1). Mean CAC and TAC scores were significantly lower in patients with PE than in patients without PE (CAC 3.4 vs. 4.9, absolute difference 1.5, 95% CI 0.2-2.8; TAC 1.1 vs. 1.8, absolute difference 0.9, 95% CI 0.2-1.2). No significant differences were found in the presence of CAC or TAC or in mean CAC and TAC scores between patients with unprovoked PE vs. patients with provoked PE, or between patients with unprovoked PE vs. no PE. Conclusion No significant differences were found between the extent of CAC and TAC in patients with unprovoked PE compared to those with provoked PE or without PE. The observed difference in the extend of CAC and TAC between patients with and without PE was dependent on prevalent cardiovascular risk factors.
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Affiliation(s)
- N van der Bijl
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - F A Klok
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | - M V Huisman
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | - A de Roos
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - L J M Kroft
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
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Zhang S, Zhai Z, Yang Y, Zhu J, Kuang T, Xie W, Yang S, Liu F, Gong J, Shen YH, Wang C. Pulmonary embolism risk stratification by European Society of Cardiology is associated with recurrent venous thromboembolism: Findings from a long-term follow-up study. Int J Cardiol 2016; 202:275-81. [DOI: 10.1016/j.ijcard.2014.09.142] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 08/29/2014] [Accepted: 09/27/2014] [Indexed: 01/08/2023]
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Management of massive and submassive pulmonary embolism: focus on recent randomized trials. Curr Opin Pulm Med 2015; 20:393-9. [PMID: 25029299 DOI: 10.1097/mcp.0000000000000089] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE OF REVIEW Although early pulmonary revascularization is the treatment of choice for patients with high-risk (massive) pulmonary embolism, it remains controversial in patients with intermediate-risk (submassive) pulmonary embolism until recently. Recent published data on the management of high-risk and intermediate-risk pulmonary embolism patients will be the main focus of this review. RECENT FINDINGS The PEITHO trial supports the rationale of risk stratification in normotensive patients with pulmonary embolism. Patients with right ventricular dilation on echocardiography and positive cardiac troponin test have a high intermediate risk of complication and death. Thrombolysis prevents hemodynamic collapse in these patients but with an increased risk of major bleeding particularly in older patients (>75 years). Reduced dose of thrombolysis and catheter-based reperfusion with or without fibrinolysis have shown promising results. SUMMARY Thrombolysis is the treatment of choice for patients with high-risk pulmonary embolism. Surgical embolectomy is recommended in case of absolute contra-indication to thrombolysis. In patients with acute right ventricular dysfunction on cardiac imaging and myocardial injury, thrombolysis should be considered if they are 75 years or less of age and are at low risk of bleeding. Full-dose thrombolysis may be excessively risky in patients over 75 years. In patients with either RV dilation or elevated cardiac biomarker, thrombolysis is not recommended.
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Klok FA, Meyer G, Konstantinides S. Management of intermediate-risk pulmonary embolism: uncertainties and challenges. Eur J Haematol 2015; 95:489-97. [DOI: 10.1111/ejh.12612] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/19/2015] [Indexed: 01/21/2023]
Affiliation(s)
| | - Guy Meyer
- Hôpital Européen Georges Pompidou; Université Paris Descartes; Sorbonne Paris Cité; INSERM UMRS 970; CIC 1418; Paris France
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25
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Meinel FG, Nance JW, Schoepf UJ, Hoffmann VS, Thierfelder KM, Costello P, Goldhaber SZ, Bamberg F. Predictive Value of Computed Tomography in Acute Pulmonary Embolism: Systematic Review and Meta-analysis. Am J Med 2015; 128:747-59.e2. [PMID: 25680885 DOI: 10.1016/j.amjmed.2015.01.023] [Citation(s) in RCA: 192] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 01/15/2015] [Accepted: 01/16/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND Many computed tomography (CT) parameters have been proposed as potential predictors of outcome in acute pulmonary embolism. We sought to summarize available evidence on the predictive value of CT severity parameters for short-term clinical outcome in pulmonary embolism. METHODS We searched PubMed and EMBASE through February 2014 for studies that reported on the association between CT parameters of acute pulmonary embolism severity and short-term (≤6 months) clinical outcome. Risk estimates for quantitative parameters of right ventricular (RV) dysfunction (abnormally increased RV/left ventricular [LV] diameter ratio on transverse sections and 4-chamber views), qualitative parameters of RV dysfunction (abnormal septal morphology and contrast reflux), thrombus load, and central thrombus location were derived using random effect regression analysis. Meta-regression analysis was performed to quantify and explain study heterogeneity. RESULTS A total of 49 studies with 13,162 patients with acute pulmonary embolism (median age of 61 years, 55.1% were women) who underwent diagnostic CT imaging were included in the analysis. An abnormally increased RV/LV diameter ratio measured on transverse sections was associated with an approximately 2.5-fold risk for all-cause mortality (pooled odds ratio [OR], 2.5; 95% confidence interval [CI], 1.8-3.5) and adverse outcome (OR, 2.3; 95% CI, 1.6-3.4) and a 5-fold risk for pulmonary embolism-related mortality (OR, 5.0; 95% CI, 2.7-9.2). Thrombus load (OR, 1.6, 95% CI, 0.7-3.9; P = .2896) and central location (OR, 1.7; 95% CI, 0.7-4.2; P = .2609) were not predictive for all-cause mortality, although both were associated with adverse clinical outcome. CONCLUSIONS Across all end points, the RV/LV diameter ratio on transverse CT sections has the strongest predictive value and most robust evidence base for adverse clinical outcomes in patients with acute pulmonary embolism.
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Affiliation(s)
- Felix G Meinel
- Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston; Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - John W Nance
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Md
| | - U Joseph Schoepf
- Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston; Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston.
| | - Verena S Hoffmann
- Institute of Biomedical Informatics, Biometry and Epidemiology, Ludwig-Maximilians-University, Munich, Germany
| | - Kolja M Thierfelder
- Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - Philip Costello
- Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston
| | - Samuel Z Goldhaber
- Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Fabian Bamberg
- Department of Radiology, University of Tübingen, Tübingen, Germany
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26
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Rizvi A, Deaño RC, Bachman DP, Xiong G, Min JK, Truong QA. Analysis of ventricular function by CT. J Cardiovasc Comput Tomogr 2015; 9:1-12. [PMID: 25576407 PMCID: PMC4329068 DOI: 10.1016/j.jcct.2014.11.007] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 11/14/2014] [Indexed: 11/22/2022]
Abstract
The assessment of ventricular function, cardiac chamber dimensions, and ventricular mass is fundamental for clinical diagnosis, risk assessment, therapeutic decisions, and prognosis in patients with cardiac disease. Although cardiac CT is a noninvasive imaging technique often used for the assessment of coronary artery disease, it can also be used to obtain important data about left and right ventricular function and morphology. In this review, we will discuss the clinical indications for the use of cardiac CT for ventricular analysis, review the evidence on the assessment of ventricular function compared with existing imaging modalities such cardiac magnetic resonance imaging and echocardiography, provide a typical cardiac CT protocol for image acquisition and postprocessing for ventricular analysis, and provide step-by-step instructions to acquire multiplanar cardiac views for ventricular assessment from the standard axial, coronal, and sagittal planes. Furthermore, both qualitative and quantitative assessments of ventricular function as well as sample reporting are detailed.
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Affiliation(s)
- Asim Rizvi
- Department of Radiology, Dalio Institute of Cardiovascular Imaging, New York-Presbyterian Hospital and Weill Cornell Medical College, Suite 108, 413 East 69th Street, New York, NY 10021, USA
| | - Roderick C Deaño
- Division of Cardiovascular Disease, New York-Presbyterian Hospital and Weill Cornell Medical College, New York, NY, USA
| | - Daniel P Bachman
- Department of Radiology, Dalio Institute of Cardiovascular Imaging, New York-Presbyterian Hospital and Weill Cornell Medical College, Suite 108, 413 East 69th Street, New York, NY 10021, USA
| | - Guanglei Xiong
- Department of Radiology, Dalio Institute of Cardiovascular Imaging, New York-Presbyterian Hospital and Weill Cornell Medical College, Suite 108, 413 East 69th Street, New York, NY 10021, USA
| | - James K Min
- Department of Radiology, Dalio Institute of Cardiovascular Imaging, New York-Presbyterian Hospital and Weill Cornell Medical College, Suite 108, 413 East 69th Street, New York, NY 10021, USA; Division of Cardiovascular Disease, New York-Presbyterian Hospital and Weill Cornell Medical College, New York, NY, USA
| | - Quynh A Truong
- Department of Radiology, Dalio Institute of Cardiovascular Imaging, New York-Presbyterian Hospital and Weill Cornell Medical College, Suite 108, 413 East 69th Street, New York, NY 10021, USA; Division of Cardiovascular Disease, New York-Presbyterian Hospital and Weill Cornell Medical College, New York, NY, USA.
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Souza CS, Resende FSS, Rodrigues MP. Severe hypoxaemia can predict unfavourable clinical outcomes in individuals with pulmonary embolism aged over 40 years. Singapore Med J 2014; 55:483-7. [PMID: 25273933 DOI: 10.11622/smedj.2014118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Acute pulmonary embolism (APE) is an urgent clinical condition that can progress in a wide variety of ways. Therefore, we sought to develop an easy-to-apply algorithm, to be based on readily available clinical indicators, effective in predicting unfavourable outcomes. METHODS This was a retrospective cohort study based on systematically collected data in a database. The study included 102 patients with APE who were admitted to a tertiary care hospital. The following outcomes were defined as unfavourable: shock, the need for mechanical ventilation, the use of thrombolytics, and death. Logistic regression analysis was used to explore variables significantly associated with outcome and to calculate post-test probabilities. RESULTS The prevalence of unfavourable outcomes was 25.5% (26 of the 102 patients with APE). The risk of an unfavourable outcome was reduced to 7.0% for patients with APE who were aged ≤ 40 years. In patients with APE who were aged > 40 years, the presence of hypoxaemia (i.e. peripheral oxygen saturation < 90%) alone increased the risk of an unfavourable outcome to 57.0%. A recent history of trauma and the presence of pre-existing lung or heart disease were significantly associated with unfavourable outcomes. The inclusion of those variables in the logistic regression model increased the post-test risk of an unfavourable outcome to 65.0%-86.0%. CONCLUSION Advanced age (i.e. > 40 years), the presence of hypoxaemia, a recent history of trauma and the presence of pre-existing lung or heart disease are risk factors for unfavourable outcome in patients with APE.
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John G, Marti C, Poletti PA, Perrier A. Hemodynamic indexes derived from computed tomography angiography to predict pulmonary embolism related mortality. BIOMED RESEARCH INTERNATIONAL 2014; 2014:363756. [PMID: 25147798 PMCID: PMC4087299 DOI: 10.1155/2014/363756] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 06/02/2014] [Indexed: 12/05/2022]
Abstract
Pulmonary embolism (PE) induces an acute increase in the right ventricle afterload that can lead to right-ventricular dysfunction (RVD) and eventually to circulatory collapse. Hemodynamic status and presence of RVD are important determinants of adverse outcomes in acute PE. Technologic progress allows computed tomography angiography (CTA) to give more information than accurate diagnosis of PE. It may also provide an insight into hemodynamics and right-ventricular function. Proximal localization of emboli, reflux of contrast medium to the hepatic veins, and right-to-left short-axis ventricular diameter ratio seem to be the most relevant CTA predictors of 30-day mortality. These elements require little postprocessing time, an advantage in the emergency room. We herein review the prognostic value of RVD and other CTA mortality predictors for patients with acute PE.
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Affiliation(s)
- Gregor John
- Department of Internal Medicine, Rehabilitation and Geriatrics, Geneva University Hospitals (HUG), Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland
| | - Christophe Marti
- Department of Internal Medicine, Rehabilitation and Geriatrics, Geneva University Hospitals (HUG), Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland
| | - Pierre-Alexandre Poletti
- Department of Radiology, Emergency-Room Radiology Unit, Geneva University Hospitals (HUG), Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland
| | - Arnaud Perrier
- Department of Internal Medicine, Rehabilitation and Geriatrics, Geneva University Hospitals (HUG) and Geneva Faculty of Medicine, Gabrielle-Perret-Gentil 4, 1211 Geneva, Switzerland
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Alonso-Martínez JL, Annicchérico-Sánchez FJ, Urbieta-Echezarreta MA, Pérez-Ricarte S. N-terminal Pro-B type natriuretic peptide as long-term predictor of death after an acute pulmonary embolism. Med Clin (Barc) 2014; 144:241-6. [PMID: 24947203 DOI: 10.1016/j.medcli.2013.11.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 11/02/2013] [Accepted: 11/07/2013] [Indexed: 11/17/2022]
Abstract
BACKGROUND AND OBJECTIVE After an acute pulmonary embolism few long-term prognostic factors have shown to be of practical use. We hypothesized that, as in heart failure, natriuretic peptides could serve as biomarkers of a late deleterious prognosis. PATIENTS AND METHODS Consecutive patients admitted to an Internal Medicine ward diagnosed with acute pulmonary embolism were traced through the computerized system of clinical episodes of Navarra Health System and by telephone calls. On hospitalization, standard evaluation was made, previous history of cancer and cardiac disease was recorded, and N-terminal ProB-type natriuretic peptide (NT-ProBNP), D-dimer and Troponin I were measured. In the analysis all-causes death was considered. RESULTS Two hundred and thirty-four patients were traced, median age 75 [interquartile range (IQR) 16] years old, women 51%. At a median time of 9.5 (IQR 29) months 52 (22%) patients had died, 38 (73%) dead patients had NT-ProBNP higher than 850 ng/L. NT-ProBNP in dead patients was 2.741 (IQR 7.420)ng/L and 662 (IQR 2.517)ng/L in survivors (p<0.001). Age (OR 4.37 CI 95% 1.04-1.16) and NT-ProBNP (OR 1.49 CI 95% 1-1.002) showed to be independent factors of mortality. Between the 3rd and 20th month after the diagnosis, a level of NT-ProBNP higher than 850 ng/L (sensitivity 0.86, specificity 0.45 and negative predictive value 0.92) was associated with a lower survival (p=0.019), hazard ratio 1.89, OR 7.67 (CI 95% 1.52-39.44) for this period. CONCLUSION Besides the unchangeable age, plasma level of NT-ProBNP measured on acute pulmonary embolism could predict longer-term all-cause death.
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Affiliation(s)
- José Luis Alonso-Martínez
- Department A of Internal Medicine, Hospital Complex of Navarra, Irunlarrea 6, 31008 Pamplona, Spain.
| | | | | | - Sara Pérez-Ricarte
- Department A of Internal Medicine, Hospital Complex of Navarra, Irunlarrea 6, 31008 Pamplona, Spain
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Pasha SM, Klok FA, van der Bijl N, de Roos A, Kroft LJM, Huisman MV. Right ventricular function and thrombus load in patients with pulmonary embolism and diagnostic delay. J Thromb Haemost 2014; 12:172-6. [PMID: 24283792 DOI: 10.1111/jth.12465] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Accepted: 11/24/2013] [Indexed: 11/29/2022]
Abstract
INTRODUCTION It has been reported that the time between symptom onset and objective diagnosis of pulmonary embolism (PE) does not affect patients' prognosis with regard to re-thrombosis and mortality risk. However, this observation is contra-intuitive and poorly understood. We further elaborated on this paradox by evaluating thrombus load and right ventricular function in patients with and without diagnostic delay. MATERIALS AND METHODS We performed a post hoc analysis of a previously published observational prospective outcome study in 113 consecutive PE patients. Qanadli-score and RV/LV ratio were scored in all patients, as was the duration from symptom onset to clinical presentation and diagnosis. Diagnostic delay was defined as a period of more than 7 days between symptom onset and clinical presentation. Further endpoints were mortality and hospital readmission in a 6-week follow-up period. RESULTS Twenty patients with and 93 patients without delay were studied, who had comparable baseline characteristics and co-morbidities. In linear analyses, Qanadli-score (R² of 0.021; P = 0.130) and RV/LV ratio (R² < 0.001; P = 0.991) were not associated with diagnostic delay. Likewise, longer delay was not predictive of 6-week mortality (odds ratio, 0.65; 95% CI, 0.08-5.57) or hospital readmission (odds ratio, 0.75; 95% CI, 0.15-3.65). CONCLUSION In our patient cohort, diagnostic delay was not associated with higher thrombus load or right ventricular dysfunction. This provides a possible explanation for the lack of prognostic relevance of diagnostic delay.
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Affiliation(s)
- S M Pasha
- Department of Thrombosis and Haemostasis, Leiden University Medical Centre, Leiden, the Netherlands
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Vitarelli A, Barillà F, Capotosto L, D'Angeli I, Truscelli G, De Maio M, Ashurov R. Right ventricular function in acute pulmonary embolism: a combined assessment by three-dimensional and speckle-tracking echocardiography. J Am Soc Echocardiogr 2013; 27:329-38. [PMID: 24325961 DOI: 10.1016/j.echo.2013.11.013] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Indexed: 11/29/2022]
Abstract
BACKGROUND The aim of this study was to assess changes in right ventricular (RV) parameters determined by three-dimensional (3D) echocardiography and speckle-tracking echocardiography in patients with acute pulmonary embolism and RV dysfunction without systemic hypotension (submassive pulmonary embolism). METHODS Sixty-six patients were prospectively studied at the onset of the acute episode and after median follow-up periods of 30 days and 6 months. Sixty-six controls were selected. RV fractional area change, tricuspid annular plane systolic excursion, and myocardial performance index were determined. RV systolic pressure was assessed using continuous-wave Doppler echocardiography. Three-dimensional RV ejection fraction (RVEF) was calculated. Two-dimensional peak systolic RV longitudinal strain (RVLS) was measured in the basal free wall, mid free wall (MFW), and apical free wall and the septum. RESULTS Tricuspid annular plane systolic excursion and fractional area change were smaller and myocardial performance index was larger compared with controls (P < .05). Global RVLS (P < .05), MFW RVLS (P < .001), and 3D RVEF (P < .001) were lower in patients with pulmonary embolism than in controls. There was earlier reversal of MFW RVLS values on 30-day follow-up and longer reversal of 3D RVEF and RV systolic pressure values at 6-month follow-up. Receiver operating characteristic curve analysis showed that changes in 3D RVEF and MFW RVLS were the most sensitive predictors of adverse events. By multivariate analysis, RV systolic pressure (P = .007), MFW RVLS (P = .002), and 3D RVEF (P = .001) were independently associated with adverse outcomes. CONCLUSIONS Acute submassive pulmonary embolism has a significant impact on RV function as assessed by 3D echocardiography and speckle-tracking echocardiography. Decreases in MFW RVLS and 3D RVEF may persist during short-term and long-term follow-up and correlate with unfavorable outcomes.
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Vedovati MC, Germini F, Agnelli G, Becattini C. Prognostic role of embolic burden assessed at computed tomography angiography in patients with acute pulmonary embolism: systematic review and meta-analysis. J Thromb Haemost 2013; 11:2092-102. [PMID: 24134450 DOI: 10.1111/jth.12429] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Indexed: 11/28/2022]
Abstract
BACKGROUND In patients with acute pulmonary embolism (PE), risk stratification is indicated for tailoring of both diagnostic strategies and acute treatment. Whether embolic burden assessed at computed tomography (CT) angiography has a role in risk stratification in these patients is debated. OBJECTIVE To systematically review and perform a meta-analysis to evaluate the role of CT-assessed burden associated with embolic obstruction and embolic localization in the prognostic stratification of patients with acute PE. METHODS We performed a systematic search in EMBASE and MEDLINE up until 30 June 2013. Studies reporting on the 30-day outcome of patients with confirmed PE and CT-assessed embolic burden were included. The study outcome was death. RESULTS Thirty studies reporting on the prognostic value of CT-assessed embolic burden met the inclusion criteria for this systematic review; of these, 19 were included in the meta-analysis. Five studies (2215 patients) were included in the analysis of localization: an association between embolus localization in the central arteries and 30-day mortality was found after heterogeneity was resolved (odds ratio [OR] 2.24, 95% confidence interval [CI] 1.29-3.89, I(2) = 0%). No correlation was observed between obstruction index (according to the Qanadli scoring system) and 30-day mortality after heterogeneity was reduced (16 studies, 3884 patients, OR 1.22, 95% CI 0.99-1.51, I(2) = 27%). CONCLUSION Localization of emboli assessed at CT angiography can be used for risk stratification in patients with acute PE. Moreover, no correlation was observed between obstruction index and prognosis.
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Affiliation(s)
- M C Vedovati
- Department of Internal and Cardiovascular Medicine - Stroke Unit, University of Perugia, Perugia, Italy
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Trujillo-Santos J, den Exter PL, Gómez V, Del Castillo H, Moreno C, van der Hulle T, Huisman MV, Monreal M, Yusen RD, Jiménez D. Computed tomography-assessed right ventricular dysfunction and risk stratification of patients with acute non-massive pulmonary embolism: systematic review and meta-analysis. J Thromb Haemost 2013; 11:1823-32. [PMID: 23964984 DOI: 10.1111/jth.12393] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 08/15/2013] [Indexed: 12/21/2022]
Abstract
BACKGROUND The ability of computed tomography (CT)-assessed right ventricular dysfunction (RVD) to identify normotensive patients with acute pulmonary embolism (PE) at high risk of mortality or adverse outcome lacks clarity. METHODS AND RESULTS We performed a systematic review and a meta-analysis of studies in normotensive patients with acute PE to assess the prognostic value of CT-assessed RVD for death and a predefined composite outcome of PE-related complications. We conducted unrestricted searches of MEDLINE and EMBASE from 1980 to March 2013, and used the terms 'computed tomography', 'pulmonary embolism', and 'prognos*'. We used a random-effects model to pool study results, funnel-plot inspection to evaluate for publication bias, and I(2) testing to assess for heterogeneity. The analysis included data from 10 studies (2288 patients). Overall, 99 of 1268 patients with RVD assessed by CT died (7.8%; 95% confidence interval [CI] 6.3-9.3) as compared with 52 of 1020 without RVD (5.1%; 95% CI 3.7-6.4). CT-assessed RVD had significant associations with mortality (odds ratio [OR] 1.8; 95% CI 1.3-2.6), with death resulting from PE (OR 7.4; 95% CI 1.4-39.5), and with PE-related complications (OR 2.4; 95% CI 1.2-4.7). Pooled likelihood ratios (LRs) were not extreme (negative LR 0.71; 95% CI 0.57-0.89; and positive LR 1.27; 95% CI 1.12-1.43). CONCLUSIONS Although RVD assessed by CT showed an association with an increased risk of mortality in patients with hemodynamically stable PE, it resulted in only small increases in the ability to classify risk.
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Affiliation(s)
- J Trujillo-Santos
- Department of Medicine, Santa Lucía Hospital, Cartagena, Murcia, Spain
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den Exter PL, Kroft LJM, van der Hulle T, Klok FA, Jiménez D, Huisman MV. Embolic burden of incidental pulmonary embolism diagnosed on routinely performed contrast-enhanced computed tomography imaging in cancer patients. J Thromb Haemost 2013; 11:1620-2. [PMID: 23782874 DOI: 10.1111/jth.12325] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Indexed: 11/28/2022]
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Jiménez D, Lobo JL, Monreal M, Moores L, Oribe M, Barrón M, Otero R, Nauffal D, Rabuñal R, Valle R, Navarro C, Rodríguez-Matute C, Álvarez C, Conget F, Uresandi F, Aujesky DA, Yusen RD. Prognostic significance of multidetector CT in normotensive patients with pulmonary embolism: results of the protect study. Thorax 2013; 69:109-15. [DOI: 10.1136/thoraxjnl-2012-202900] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Pulmonary CT angiography in pulmonary embolism: Beyond diagnosis. REVISTA PORTUGUESA DE CARDIOLOGIA (ENGLISH EDITION) 2012. [DOI: 10.1016/j.repce.2012.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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[Pulmonary CT angiography in pulmonary embolism: beyond diagnosis]. Rev Port Cardiol 2012; 31:697-9. [PMID: 23085325 DOI: 10.1016/j.repc.2012.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 09/04/2012] [Indexed: 11/20/2022] Open
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Lehnert T, Wrzesniak A, Bernhardt D, Ackermann H, Kerl JM, Vega-Higuera F, Vogl TJ, Bauer RW. Fully automated right ventricular volumetry from ECG-gated coronary CT angiography data: evaluation of prototype software. Int J Cardiovasc Imaging 2012; 29:489-96. [PMID: 22890796 DOI: 10.1007/s10554-012-0109-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 07/30/2012] [Indexed: 10/28/2022]
Abstract
Enlargement and dysfunction of the right ventricle (RV) is a sign and outcome predictor of many cardiopulmonary diseases. Due to the complex geometry of the RV exact volumetry is cumbersome and time-consuming. We evaluated the performance of prototype software for fully automated RV segmentation and volumetry from cardiac CT data. In 50 retrospectively ECG-gated coronary CT angiography scans the endsystolic (RVVmin) and enddiastolic (RVVmax) volume of the right ventricle was calculated fully automatically by prototype software. Manual slice segmentation by two independent radiologists served as the reference standard. Measurement periods were compared for both methods. RV volumes calculated with the software were in strong agreement with the results from manual slice segmentation (Bland-Altman r = 0.95-0.98; p < 0.001; Lin's correlation Rho = 0.87-0.96, p < 0.001) for RVVmax and RVVmin with excellent interobserver agreement between both radiologists (r = 0.97; p < 0.001). The measurement period was significantly shorter with the software (153 ± 9 s) than with manual slice segmentation (658 ± 211 s). The prototype software demonstrated very good performance in comparison to the reference standard. It promises robust RV volume results and minimizes postprocessing time.
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Affiliation(s)
- Thomas Lehnert
- Department of Diagnostic and Interventional Radiology, Clinic of the Goethe University, Haus 23C UG, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany.
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Axial and Reformatted Four-Chamber Right Ventricle–to–Left Ventricle Diameter Ratios on Pulmonary CT Angiography as Predictors of Death After Acute Pulmonary Embolism. AJR Am J Roentgenol 2012; 198:1353-60. [DOI: 10.2214/ajr.11.7439] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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40
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Klok FA, Romeih S, Kroft LJM, Westenberg JJM, Huisman MV, de Roos A. Recovery of right and left ventricular function after acute pulmonary embolism. Clin Radiol 2011; 66:1203-7. [PMID: 21899831 DOI: 10.1016/j.crad.2011.08.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Revised: 07/29/2011] [Accepted: 08/01/2011] [Indexed: 11/16/2022]
Abstract
AIM To evaluate recovery of cardiac function after acute pulmonary embolism (PE). MATERIALS AND METHODS Routine breath-held computed tomography (CT)-pulmonary angiography was performed in patients with suspected PE to confirm or exclude the diagnosis of PE at initial presentation. Electrocardiogram (ECG)-triggered cardiac CT was performed to assess biventricular function. After 6 months, cardiac magnetic resonance imaging (MRI) was performed. In total, 15 consecutive patients with PE and 10 without were studied. A significant change in ventricular volume was defined as a >15% change in end-diastolic or -systolic volumes (EDV, ESV), and significant ventricular function improvement as a >5% increase in ejection fraction (EF) as based on reported cut-off values. RESULTS Right and left ventricular (RV and LV) EDV and ESV changed non-significantly (<1.3%) in the patients without PE, indicating good comparability of those values measured by CT and MRI. PE patients with baseline normal RV function (RVEF ≥ 47%) revealed a >5% improvement in the RVEF (+5.4 ± 3.1%) due to a decrease in the RVESV. Patients with baseline abnormal RV function showed a >5% improvement in the RVEF (+14 ± 15%) due to decreases in both the RVESV and RVEDV. Furthermore, the LVEDV increased in this latter patient group. CONCLUSIONS The present study demonstrated an improvement in RV function in the majority of patients with PE, independent of baseline RV function. The degree of RV and LV recovery was dependent on the severity of baseline RV dysfunction.
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Affiliation(s)
- F A Klok
- Section of Vascular Medicine, Department of General Internal Medicine-Endocrinology, Leiden University Medical Center, Leiden, The Netherlands.
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