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16 pages, 2783 KiB  
Review
Intravascular Ultrasound Findings in Acute and Chronic Deep Vein Thrombosis of the Lower Extremities
by Fabio Corvino, Francesco Giurazza, Massimo Galia, Antonio Corvino, Roberto Minici, Antonio Basile, Anna Maria Ierardi, Paolo Marra and Raffaella Niola
Diagnostics 2025, 15(5), 577; https://doi.org/10.3390/diagnostics15050577 - 27 Feb 2025
Cited by 2 | Viewed by 1596
Abstract
Deep vein thrombosis (DVT) of the lower extremities, as part of venous thromboembolism disorder, is the third leading cause of acute cardiovascular syndrome after heart attack and stroke. It can result in disability due to pulmonary embolism (PE) and post-thrombotic syndrome (PTS), particularly [...] Read more.
Deep vein thrombosis (DVT) of the lower extremities, as part of venous thromboembolism disorder, is the third leading cause of acute cardiovascular syndrome after heart attack and stroke. It can result in disability due to pulmonary embolism (PE) and post-thrombotic syndrome (PTS), particularly in cases where the thrombosis extends to the iliofemoral veins. Anticoagulation therapy is effective in preventing thrombus propagation and embolism but may not be sufficient for thrombus degradation and venous patency restoration. Up to 50% of patients with iliofemoral DVT develop PTS, mainly due to venous outflow obstruction or valvular incompetence. To date, the advent of new devices that enables rapid thrombus elimination and the restoration of deep venous patency, known as the “OPEN VEIN hypothesis”, may prevent valvular damage and reflux, cutting down the rate of PTS. Similarly, chronic venous disease could be related to a stenosis or occlusion of a major vein that can restrict blood flow. In this setting, intravascular ultrasound (IVUS) is an essential tool for correct diagnostic and therapeutic planning in acute and chronic vein disease. Only angiography in vein disease can limit the procedure’s efficacy, with a high rate of stenosis misdiagnosed; IVUS provides further imaging that complements traditional angiographic study, and its role is now established by different international guidelines. If compared to angiography, IVUS allows for the evaluation of major axial veins in a 360-degree ultrasound image of the lumen and of the vessel wall structure. At the same time, the precise location and size of the major lower extremity veins allow for the placement of the stent to be more straightforward with a precise dimension of the vein in all of its diameters; moreover, other abnormalities should be visualized as acute or chronic thrombus, fibrosis, or trabeculations. This review aims to provide an in-depth analysis of IVUS findings in acute and chronic lower extremity DVT, emphasizing its diagnostic and therapeutic implications. Full article
(This article belongs to the Special Issue Vascular Diagnostic Imaging)
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24 pages, 5694 KiB  
Review
Current Status of CT Imaging Before Common Transcatheter Interventions for Structural Heart Disease
by Rodrigo Salgado, Farah Cadour, Riccardo Cau and Luca Saba
Diagnostics 2025, 15(1), 97; https://doi.org/10.3390/diagnostics15010097 - 3 Jan 2025
Viewed by 1140
Abstract
Background: Over the past decade, several trials and observational studies have validated the use of minimally invasive cardiac interventions as viable treatment options for various cardiac diseases. Transcatheter techniques for severe aortic valve stenosis have rapidly emerged as alternatives to surgical aortic valve [...] Read more.
Background: Over the past decade, several trials and observational studies have validated the use of minimally invasive cardiac interventions as viable treatment options for various cardiac diseases. Transcatheter techniques for severe aortic valve stenosis have rapidly emerged as alternatives to surgical aortic valve replacement in certain patient populations. Additionally, non-surgical treatment options have expanded for conditions affecting other cardiac valves, such as the mitral valve. These emerging minimally invasive interventions complement already well-established endovascular techniques for, among others, atrial septal defect closure, left atrial appendage occlusion and pulmonary vein isolation in patients with atrial fibrillation. Given their non-surgical nature and lack of direct visualisation of the targeted anatomy, these procedures heavily rely on precise pre-procedural radiological imaging for optimal patient selection and procedural success. Method: This paper is based on the expert opinion of the authors and an exhaustive literature research. Results: This manuscript reviews the most commonly employed minimally invasive cardiac interventions, highlighting the essential pre-procedural imaging information and key aspects that must be included in radiological reports to mitigate potential complications. Conclusion: Accurate pre-procedural imaging is crucial for ensuring safe and effective minimally invasive cardiac interventions, underscoring the importance of the radiologist in the pre-procedural work-up of these patients. Full article
(This article belongs to the Special Issue New Trends and Advances in Cardiac Imaging)
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12 pages, 2010 KiB  
Article
Prevalence and Clinical Implications of Pulmonary Vein Stenosis in Bronchiectasis: A 3D Reconstruction CT Study
by Xin Li, Yang Gu, Jinbai Miao, Ying Ji, Mingming Shao and Bin Hu
Adv. Respir. Med. 2024, 92(6), 526-537; https://doi.org/10.3390/arm92060046 - 16 Dec 2024
Viewed by 1287
Abstract
Background: Recent studies on bronchiectasis have revealed significant structural abnormalities and pathophysiological changes. However, there is limited research focused on pulmonary venous variability and congenital variation. Through our surgical observations, we noted that coarctation of pulmonary veins and atrophied lung volume are relatively [...] Read more.
Background: Recent studies on bronchiectasis have revealed significant structural abnormalities and pathophysiological changes. However, there is limited research focused on pulmonary venous variability and congenital variation. Through our surgical observations, we noted that coarctation of pulmonary veins and atrophied lung volume are relatively common in bronchiectasis patients. Therefore, we conducted a retrospective study to explore pulmonary venous variation and secondary manifestations in bronchiectasis cases, utilizing 3D reconstruction software (Mimics Innovation Suite 21.0, Materialise Dental, Leuven, Belgium) to draw conclusions supported by statistical evidence. Method: This retrospective study included patients with bronchiectasis and healthy individuals who underwent CT examinations at Beijing Chao-Yang Hospital between January 2017 and July 2023. Chest CT data were reconstructed using Materialise Mimics. Pulmonary veins and lung lobes were segmented from surrounding tissue based on an appropriate threshold determined by local grey values and image gradients. Subsequently, venous cross-sectional areas and lung volumes were measured for statistical analysis. Result: CT data from 174 inpatients with bronchiectasis and 75 cases from the health examination center were included. Three-dimensional reconstruction data revealed a significant reduction in cross-sectional areas of pulmonary veins in the left lower lobe (p < 0.001), the right lower lobe (p = 0.030), and the right middle lobe (p = 0.009) of bronchiectasis patients. Subgroup analyses indicated that approximately 73.5% of localized cases of the left lower lobe exhibited pulmonary vein stenosis, while in the diffuse group, this proportion was only 52.6%. Furthermore, the cross-sectional area of pulmonary veins had a gradually decreasing trend, based on a small sample. Lung function tests showed significant reductions in FEV1, FVC, and FEV1% in bronchiectasis patients, attributed to the loss of lung volume in the left lower lobe, which accounted for 60.9% of the included sample. Conclusions: Our recent findings suggest that pulmonary venous stenosis is a common variation in bronchiectasis and is often observed concurrently with reduced lung volume, particularly affecting the left lower lobe. Moreover, localized cases are more likely to suffer from pulmonary venous stenosis, with an ambiguous downtrend as the disease progresses. In conclusion, increased attention to pulmonary venous variation in bronchiectasis is warranted, and exploring new therapies to intervene in the early stages or alleviate obstruction may be beneficial. Full article
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20 pages, 253 KiB  
Article
Exploring Stress and Coping in Caregivers of Children with Pulmonary Vein Stenosis: A Mixed-Method Study
by Mark Fuller, Christina Ireland, Rachel Zmora and Kathy Jenkins
Children 2024, 11(8), 1008; https://doi.org/10.3390/children11081008 - 17 Aug 2024
Viewed by 1308
Abstract
(1) Background: This mixed-method study aims to identify and describe factors associated with acute and long-term parenting stressors and coping strategies in caregivers of children with intraluminal pulmonary vein stenosis (PVS). (2) Methods: Parents of children with severe PVS were recruited from a [...] Read more.
(1) Background: This mixed-method study aims to identify and describe factors associated with acute and long-term parenting stressors and coping strategies in caregivers of children with intraluminal pulmonary vein stenosis (PVS). (2) Methods: Parents of children with severe PVS were recruited from a large quaternary hospital to complete a survey that included demographics, the Pediatric Inventory for Parents (PIP), and the Coping Health Inventory for Parents (CHIP). We determined the Social Vulnerability Index (SVI) based on self-reported home address. A subset of caregivers completed a 60 min semi-structured interview via Zoom exploring the impact their child’s diagnosis had on their family; experience managing stress in the hospital and at home; current resources and processes for coping; and potential recommendations for hospitals to build resilience and coping. We used multivariable linear regression to examine the association between SVI and parental stress and coping while adjusting for possible confounders. Thematic analysis identified themes related to stress and coping. Finally, we assessed instances of convergence and difference between the qualitative and quantitative results. (3) Results: Participants included 32 caregivers who were 91% female with a mean age of 39 years. The children of participants were 66% female, with a mean age of five years. The parents reported a high amount of stress with an average PIP score of 120, nearly 46 points higher than similar studies in the congenital heart community. We observed no significant associations between SVI and either parental stress or coping in adjusted models. We identified 13 themes, including medical care, hospital, family, support systems, and home medical routine or support. (4) Conclusions: Our study found high levels of illness-related parental stress among caregivers of children with PVS. Stress evolved over time from what caregivers described as ‘survival mode’ to a future-oriented outlook. Currently, caregivers rely heavily on support networks that are not available to all caregivers or may experience strain over time. Caregivers indicated that communication and parental role functioning were coping strategies that could be better supported by providers and health systems. Full article
(This article belongs to the Section Pediatric Pulmonary and Sleep Medicine)
22 pages, 7128 KiB  
Review
Navigating Diagnostic and Treatment Challenges of Pulmonary Hypertension in Infants with Bronchopulmonary Dysplasia
by Nidhy P. Varghese, Gabriel Altit, Megan M. Gubichuk and Roopa Siddaiah
J. Clin. Med. 2024, 13(12), 3417; https://doi.org/10.3390/jcm13123417 - 11 Jun 2024
Cited by 1 | Viewed by 2537
Abstract
Advances in perinatal intensive care have significantly enhanced the survival rates of extremely low gestation-al-age neonates but with continued high rates of bronchopulmonary dysplasia (BPD). Nevertheless, as the survival of these infants improves, there is a growing awareness of associated abnormalities in pulmonary [...] Read more.
Advances in perinatal intensive care have significantly enhanced the survival rates of extremely low gestation-al-age neonates but with continued high rates of bronchopulmonary dysplasia (BPD). Nevertheless, as the survival of these infants improves, there is a growing awareness of associated abnormalities in pulmonary vascular development and hemodynamics within the pulmonary circulation. Premature infants, now born as early as 22 weeks, face heightened risks of adverse development in both pulmonary arterial and venous systems. This risk is compounded by parenchymal and airway abnormalities, as well as factors such as inflammation, fibrosis, and adverse growth trajectory. The presence of pulmonary hypertension in bronchopulmonary dysplasia (BPD-PH) has been linked to an increased mortality and substantial morbidities, including a greater susceptibility to later neurodevelopmental challenges. BPD-PH is now recognized to be a spectrum of disease, with a multifactorial pathophysiology. This review discusses the challenges associated with the identification and management of BPD-PH, both of which are important in minimizing further disease progression and improving cardiopulmonary morbidity in the BPD infant. Full article
(This article belongs to the Special Issue Challenges in Bronchopulmonary Dysplasia)
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9 pages, 2023 KiB  
Article
Pelvic Vein Obstruction in Chronic Thromboembolic Pulmonary Hypertension: A Novel Association
by Anjali Vaidya, Anika Vaidy, Mohamad Al-Otaibi, Brooke Zlotshewer, Estefania Oliveros, Huaqing Zhao, Ahmed Sadek, Vladimir Lakhter, Paul R. Forfia and Riyaz Bashir
J. Clin. Med. 2024, 13(6), 1553; https://doi.org/10.3390/jcm13061553 - 8 Mar 2024
Viewed by 1583
Abstract
Background: Pelvic venous obstruction (PVO), defined as greater than 50% stenosis or occlusion of pelvic veins, is a known risk factor for deep vein thrombosis (DVT). DVT is a known risk factor for chronic thromboembolic pulmonary hypertension (CTEPH), but the prevalence of PVO [...] Read more.
Background: Pelvic venous obstruction (PVO), defined as greater than 50% stenosis or occlusion of pelvic veins, is a known risk factor for deep vein thrombosis (DVT). DVT is a known risk factor for chronic thromboembolic pulmonary hypertension (CTEPH), but the prevalence of PVO in CTEPH is unknown. Methods: This cross-sectional study at Temple University’s tertiary referral center for Pulmonary Hypertension, Right Heart Failure, and CTEPH sought to identify the presence of PVO in patients with CTEPH who underwent cardiac catheterization, pulmonary angiography, and venography. Results: A total of 193 CTEPH patients were referred for pulmonary angiography, and among these, 148 underwent venography. PVO was identified in 65 (44%) patients. Lower extremity (LE) DVT was associated with PVO (p = 0.004). The severity of pulmonary hypertension was similar with and without PVO (mean pulmonary artery pressure 43.0 ± 10.3 mm Hg vs. 43.8 ± 12.4 mm Hg, p = 0.70), as was the need for pulmonary thromboendarterectomy (69.2% vs. 61.4%, p = 0.32). Conclusions: Pelvic vein obstruction is common and a novel clinical association in patients with CTEPH, particularly in patients with a history of LE DVT. PVO and its role in CTEPH warrants further study, including the potential role of revascularization to mitigate further risk. Full article
(This article belongs to the Special Issue Guidelines for the Management of Pulmonary Arterial Hypertension)
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7 pages, 1304 KiB  
Case Report
Fatal Hemoptysis Secondary to Severe Pulmonary Veins Stenosis and Fibrosing Mediastinitis following Radiofrequency Ablation for Atrial Fibrillation: A Case Report and Review of the Literature
by Vladut Mirel Burduloi, Flavia Catalina Corciova, Gabriela Dumachita Sargu, Raluca Ozana Chistol, Alexandra Cristina Rusu and Cristinel Ionel Stan
Reports 2024, 7(1), 2; https://doi.org/10.3390/reports7010002 - 26 Dec 2023
Viewed by 2145
Abstract
Fatal hemoptysis secondary to severe pulmonary veins stenosis and fibrosing mediastinitis is an exceptional late complication of radiofrequency ablation for atrial fibrillation. We report the case of a 53-year-old male with a history of atrial fibrillation treated by radiofrequency ablation and admitted in [...] Read more.
Fatal hemoptysis secondary to severe pulmonary veins stenosis and fibrosing mediastinitis is an exceptional late complication of radiofrequency ablation for atrial fibrillation. We report the case of a 53-year-old male with a history of atrial fibrillation treated by radiofrequency ablation and admitted in our center 6 months after the procedure because of aggravating dyspnea and fatigability. Transthoracic echocardiography showed moderate dilation of right heart cavities, severe pulmonary hypertension and a turbulent flow in superior pulmonary veins. The cardiologist suspected pulmonary vein(s) stenosis and so cardiac computed tomography (CT) angiography was performed, with findings of severe stenosis of the right superior, right inferior and left inferior pulmonary veins, near-occlusion of the left superior pulmonary vein and the vein draining the apical segment of the right lower lobe. The CT scan also revealed soft tissue attenuation of the mediastinum posterior to the left atrium suggesting fibrosing mediastinitis together with parenchymal findings consistent with pulmonary veno-oclusive disease and an area of hemorrhagic infarction. Fatal hemoptysis occurred 3 days later, before treatment was attempted. In conclusion, severe pulmonary vein stenosis and fibrosing mediastinitis are rare but devastating complications of radiofrequency ablation. Prevention and early diagnosis are the key elements as these entities are potentially life-threatening. Full article
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18 pages, 3272 KiB  
Article
Association of Atrial Fibrillation Recurrence with Right Coronary Atherosclerosis and Increased Left Arterial Epicardial Fat Following Catheter Ablation—Results of a Multimodality Study
by Lehel László Bordi, Theodora Benedek, István Kovács, Diana Opincariu, Emese Márton, Zsolt Parajkó, Renáta Gerculy and Imre Benedek
Life 2023, 13(9), 1891; https://doi.org/10.3390/life13091891 - 10 Sep 2023
Cited by 1 | Viewed by 1612
Abstract
Background: Identification of predictors for atrial fibrillation (AF) recurrence after pulmonary vein isolation (PVI) can lead to better long-term results. Our aim was to investigate the association between novel CT imaging markers reflecting the severity of coronary atherosclerosis and the risk of recurrence [...] Read more.
Background: Identification of predictors for atrial fibrillation (AF) recurrence after pulmonary vein isolation (PVI) can lead to better long-term results. Our aim was to investigate the association between novel CT imaging markers reflecting the severity of coronary atherosclerosis and the risk of recurrence following PVI. Methods: This study included 80 patients with paroxysmal/persistent AF who underwent PVI. The patients were divided into two groups: Group 1–23 patients with recurrence and Group 2–57 patients without recurrence. Results: Patients with recurrence presented with a more enlarged left atrial diameter and reduced left ventricle EF, as assessed by echocardiography. Elevated calcium scores and right coronary artery (RCA) stenosis were correlated with a higher risk of AF recurrence (25.38 ± 4.1% vs. 9.76 ± 2.32%, p = 0.001). Patients with AF recurrence presented a higher left atrial volume index (LAVI) (61.38 ± 11.12 mm3/m2 vs. 46.34 ± 12.27 mm3/m2, p < 0.0001). The bi-atrial volume index (BAVI) was similarly higher in the AF recurrence group (98.23 ± 14.44 mm3/m2 vs. 76.48 ± 17.61 mm3/m2, p < 0.0001). Increased EAT volumes located around the LA (EAT-LA) were correlated with recurrence (25.55 ± 6.37 vs. 15.54 ± 8.44, p < 0.0001). Conclusions: RCA stenosis, together with atrial volumes and EAT-AS evaluated by CCTA, is associated with the risk of AF recurrence following PVI. Full article
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15 pages, 5060 KiB  
Article
Proteomics- and Metabolomics-Based Analysis of Metabolic Changes in a Swine Model of Pulmonary Hypertension
by Payel Sen, Bachuki Shashikadze, Florian Flenkenthaler, Esther Van de Kamp, Siyu Tian, Chen Meng, Michael Gigl, Thomas Fröhlich and Daphne Merkus
Int. J. Mol. Sci. 2023, 24(5), 4870; https://doi.org/10.3390/ijms24054870 - 2 Mar 2023
Cited by 3 | Viewed by 2872
Abstract
Pulmonary vein stenosis (PVS) causes a rare type of pulmonary hypertension (PH) by impacting the flow and pressure within the pulmonary vasculature, resulting in endothelial dysfunction and metabolic changes. A prudent line of treatment in this type of PH would be targeted therapy [...] Read more.
Pulmonary vein stenosis (PVS) causes a rare type of pulmonary hypertension (PH) by impacting the flow and pressure within the pulmonary vasculature, resulting in endothelial dysfunction and metabolic changes. A prudent line of treatment in this type of PH would be targeted therapy to relieve the pressure and reverse the flow-related changes. We used a swine model in order to mimic PH after PVS using pulmonary vein banding (PVB) of the lower lobes for 12 weeks to mimic the hemodynamic profile associated with PH and investigated the molecular alterations that provide an impetus for the development of PH. Our current study aimed to employ unbiased proteomic and metabolomic analyses on both the upper and lower lobes of the swine lung to identify regions with metabolic alterations. We detected changes in the upper lobes for the PVB animals mainly pertaining to fatty acid metabolism, reactive oxygen species (ROS) signaling and extracellular matrix (ECM) remodeling and small, albeit, significant changes in the lower lobes for purine metabolism. Full article
(This article belongs to the Special Issue Molecular Research on Pulmonary Hypertension 4.0)
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6 pages, 629 KiB  
Case Report
Combination Chemotherapy in Severe Pulmonary Vein Stenosis—A Case Series
by Gabriel Krivenko, Karen Iacono, David Nykanen, Robyn Keen, Robert Sutphin and Michael Farias
Children 2023, 10(2), 364; https://doi.org/10.3390/children10020364 - 11 Feb 2023
Cited by 2 | Viewed by 2175
Abstract
Pulmonary vein stenosis results from a proliferative process that leads to the progressive obstruction of venous return to the left atrium. It is often resistant to catheterization and surgical based interventions and is frequently fatal when encountered in its severe form. Here, we [...] Read more.
Pulmonary vein stenosis results from a proliferative process that leads to the progressive obstruction of venous return to the left atrium. It is often resistant to catheterization and surgical based interventions and is frequently fatal when encountered in its severe form. Here, we describe three patients with severe, primary pulmonary vein stenosis that was progressing despite aggressive conventional management strategies. All three patients were initiated on combination chemotherapy with imatinib and sirolimus, drugs which have been previously shown to independently have potential benefit against PVS. Soon after the initiation of these therapies, all three patients experienced a stabilization of their disease process and clinical improvement. All three patients remain alive, with tolerable side effects from the medications. Although early in our experience and with only a small number of patients, combination chemotherapy with imatinib and sirolimus shows promise and merits further investigation as a therapeutic option for this aggressive disease. Full article
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11 pages, 2717 KiB  
Case Report
A Case of Congenital Pulmonary Vein Stenosis with Secondary Post-Capillary Pulmonary Hypertension and Left Sided Congestive Heart Failure in a Cat
by Karin Kriström, Erika Karlstam, Tove Nielsen, Anne Lagerqvist and Mark Dirven
Vet. Sci. 2023, 10(1), 23; https://doi.org/10.3390/vetsci10010023 - 29 Dec 2022
Cited by 3 | Viewed by 3911
Abstract
A five-month-old, 3.8 kg intact male Maine coon cat presented for dyspnea characterized by increased respiratory effort in addition to open-mouth breathing. Thoracic radiographs showed pectus excavatum, enlarged cardiac silhouette, and generalized interstitial patterns. Echocardiography revealed normal left atrial (LA) and left ventricular [...] Read more.
A five-month-old, 3.8 kg intact male Maine coon cat presented for dyspnea characterized by increased respiratory effort in addition to open-mouth breathing. Thoracic radiographs showed pectus excavatum, enlarged cardiac silhouette, and generalized interstitial patterns. Echocardiography revealed normal left atrial (LA) and left ventricular dimensions. A large tubular structure, suspected to be a distended pulmonary vein (PV), was identified as draining into the LA. Severe eccentric and concentric right ventricular hypertrophy and paradoxical septal motion were noted. Based on Doppler echocardiography, both pulmonary venous and pulmonary artery pressure was severely elevated. Clinical, radiographic, and echocardiographic abnormalities were hypothesized to result from pulmonary vein stenosis (PVS), causing severely elevated pulmonary venous pressures and resulting in clinical signs of left-sided congestive heart failure (L-CHF) and severe post-capillary pulmonary hypertension (Pc-PH). The prognosis for good quality of life was assessed as poor, and the owner elected euthanasia. Necropsy confirmed the presence of PVS with severe dilation of the PVs draining all but the left cranial lung lobe. All lung lobes except the left cranial lobe had increased tissue density and a mottled cut surface. This case report shows that, in rare cases, both L-CHF and Pc-PH may be present without LA enlargement. To the authors’ knowledge, this is the first report on PVS in veterinary medicine. Full article
(This article belongs to the Section Veterinary Internal Medicine)
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11 pages, 6280 KiB  
Article
Pulsed-Field Ablation Using a Novel Ablation-Mapping Integrated System for Pulmonary Vein Isolation—A Preliminary Animal Study
by Zhihong Zhao, Yonggang Chen, Bin Wu, Gaodong Qiu, Liangjie Hong, Xinhua Chen and Xingwei Zhang
J. Cardiovasc. Dev. Dis. 2022, 9(12), 425; https://doi.org/10.3390/jcdd9120425 - 29 Nov 2022
Cited by 4 | Viewed by 3496
Abstract
Objective: The purpose of this study is to evaluate the preliminary safety and effect of a pulsed electric field (PEF) ablation system. Methods: The pulmonary veins (PVs) and superior vena cava (SVC) were isolated with the pulsed field ablation (PFA) system, which included [...] Read more.
Objective: The purpose of this study is to evaluate the preliminary safety and effect of a pulsed electric field (PEF) ablation system. Methods: The pulmonary veins (PVs) and superior vena cava (SVC) were isolated with the pulsed field ablation (PFA) system, which included a PEF generator and an electrode. The effects of PFA were investigated in six porcines using a novel circular catheter with combined functions (mapping/ablation) designed to work with a cardiac mapping system. The PEF generator delivered a train of biphasic pulsed electric pulses with a high amplitude (800–2000 V) and short pulse duration. The voltage mapping, PVs and SVC potentials, ostial diameters, and phrenic nerve and esophagus viability data were collected 4 weeks later, after which the animals were subsequently euthanized for gross histopathology analysis. Results: PFA 100% isolated the PVs and SVC with four applications with a mean pulse number of 100–150 pulses, causing no muscle convulsion. PFA does not cause PV stenosis or phrenic nerve dysfunction. Histological analysis confirmed 100% transmurally without any venous stenoses or phrenic injuries. Pathology follow-up showed that PFA had selectively ablated cardiomyocytes but spared blood vessels, the esophagus, and phrenic nerves; after ablation, the myocardial tissue showed homogeneous fibrosis. Conclusion: The PFA system is safe and feasible in the preliminary porcine model, which can effectively isolate PVs and SVCs. Transmural tissue damage can be achieved without phrenic palsy or stenosis. Full article
(This article belongs to the Section Basic and Translational Cardiovascular Research)
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11 pages, 4692 KiB  
Interesting Images
Incidental Vascular Findings in Computed Tomography Performed in the Qualification for the TAVI Procedure
by Paweł Gać, Aleksandra Grochulska and Rafał Poręba
Diagnostics 2022, 12(11), 2773; https://doi.org/10.3390/diagnostics12112773 - 13 Nov 2022
Viewed by 2015
Abstract
Transcatheter aortic valve implantation (TAVI) or transcatheter aortic valve replacement (TAVR) is now a very widespread treatment method for symptomatic and severe aortic stenosis as an alternative for patients at intermediate or high risk of surgery or contraindications to surgery. The key role [...] Read more.
Transcatheter aortic valve implantation (TAVI) or transcatheter aortic valve replacement (TAVR) is now a very widespread treatment method for symptomatic and severe aortic stenosis as an alternative for patients at intermediate or high risk of surgery or contraindications to surgery. The key role of imaging examinations before TAVI is to assess the morphology of the aortic valve, the routes of surgical access, and non-cardiac and extravascular structures. The objective of this article is to present and discuss the importance of selected accidental vascular findings in computed tomography examinations of the heart and large vessels performed in the TAVI qualification procedure: persistent left superior vena cava (SVC) with absent right SVC, right aortic arch, ectopic right coronary artery ostium, and left superior pulmonary vein draining into left brachiocephalic vein. Full article
(This article belongs to the Collection Interesting Images)
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7 pages, 3103 KiB  
Case Report
Abnormalities of External Jugular Veins in Bulldogs with Pulmonary Valve Stenosis
by Marta Croce, Tommaso Vezzosi, Federica Marchesotti, Valentina Patata, Martina Bini, Giuseppe Lacava, Luigi Venco and Oriol Domenech
Vet. Sci. 2022, 9(7), 359; https://doi.org/10.3390/vetsci9070359 - 15 Jul 2022
Cited by 2 | Viewed by 2832
Abstract
Two French bulldogs and one English bulldog affected by pulmonary valve stenosis and referred for pulmonary balloon valvuloplasty were diagnosed with different abnormalities of the external jugular veins. The diagnosis included unilateral absence of the right external jugular vein and bilateral hypoplasia of [...] Read more.
Two French bulldogs and one English bulldog affected by pulmonary valve stenosis and referred for pulmonary balloon valvuloplasty were diagnosed with different abnormalities of the external jugular veins. The diagnosis included unilateral absence of the right external jugular vein and bilateral hypoplasia of the external jugular veins, associated with persistent left cranial vena cava. Vascular ultrasound and computed tomography were used for the diagnosis. Jugular vein anomalies can affect decision-making regarding the central venous catheterization needed to perform procedures such as pulmonary balloon valvuloplasty or central catheter placement. Based on the results of the present case series, anomalies of external jugular veins should be considered in French and English bulldogs when the external jugular veins cannot be palpated or when echocardiography shows coronary sinus dilation. Vascular ultrasound or computed tomography may help identify jugular venous anomalies and should be considered in the preoperative evaluation of bulldogs that need to undergo interventional procedures requiring transjugular catheterization. Full article
(This article belongs to the Special Issue Advances in Right Heart Diseases in Veterinary Science)
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5 pages, 1657 KiB  
Interesting Images
Coexistence of Cor Triatriatum Sinister, Fibroelastoma and Pulmonary Veins Ostial Anatomy Variant as Incidental Findings in Coronary Computed Tomography Angiography
by Paweł Gać, Adrian Martuszewski, Patrycja Paluszkiewicz and Rafał Poręba
Diagnostics 2022, 12(6), 1449; https://doi.org/10.3390/diagnostics12061449 - 13 Jun 2022
Viewed by 2151
Abstract
Coronary computed tomography angiography (CCTA) is a noninvasive examination whose main purpose is to exclude significant stenosis in the coronary arteries. The obtained computed tomography images may also provide information about other coexisting pathologies of the heart and vessels. The paper presents images [...] Read more.
Coronary computed tomography angiography (CCTA) is a noninvasive examination whose main purpose is to exclude significant stenosis in the coronary arteries. The obtained computed tomography images may also provide information about other coexisting pathologies of the heart and vessels. The paper presents images of cardiac lesions in a 44-year-old hypertensive patient who underwent CCTA, based on which significant stenosis in the coronary arteries was excluded, the suspicion of a cor triatriatum sinister was confirmed and the presence of fibroelastoma and a variant of the anatomy of the pulmonary veins ostial was confirmed. To sum up, when performing CCTA, apart from the analysis of the coronary arteries, one should remember about lesions in the remaining visible anatomical structures of the heart and large vessels. Full article
(This article belongs to the Special Issue Imaging Cardiac Arrhythmia/Sudden Cardiac Death 2.0)
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