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Grosse-Wortmann L, Wald RM, Valverde I, Valsangiacomo-Buechel E, Ordovas K, Raimondi F, Browne L, Babu-Narayan SV, Krishnamurthy R, Yim D, Rathod RH. Society for Cardiovascular Magnetic Resonance guidelines for reporting cardiovascular magnetic resonance examinations in patients with congenital heart disease. J Cardiovasc Magn Reson 2024; 26:101062. [PMID: 39053855 DOI: 10.1016/j.jocmr.2024.101062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Accepted: 07/18/2024] [Indexed: 07/27/2024] Open
Affiliation(s)
- Lars Grosse-Wortmann
- Doernbecher Children's Hospital, Department of Pediatrics, Oregon Health and Science University, Portland, Oregon, USA.
| | - Rachel M Wald
- Toronto Congenital Cardiac Centre for Adults, Peter Munk Cardiac Centre, Toronto, Ontario, Canada
| | - Israel Valverde
- Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | | | - Karen Ordovas
- Department of Radiology, University of Washington, Seattle, Washington, USA
| | - Francesca Raimondi
- Department of Pediatric and Adult Congenital Heart Diseases, Ospedale Papa Giovanni XXIII, Bergamo, Italy
| | - Lorna Browne
- Department of Radiology, Children's Hospital Colorado, Aurora, CO, USA
| | - Sonya V Babu-Narayan
- Department of Adult Congenital Heart Disease, Royal Brompton Hospital, London, United Kingdom
| | | | - Deane Yim
- Department of Paediatric Cardiology, Perth Children's Hospital, Perth, Australia
| | - Rahul H Rathod
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachussetts, USA
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Vidiyala P, Pandey NN, Gupta SK, Sreelal TV, Verma M, Kumar S, Ramakrishnan S, Jagia P. Identification and Analysis of Atrial-Bronchial-Abdominal Disharmony in Patients with Isomeric Atrial Appendages. Pediatr Cardiol 2024:10.1007/s00246-024-03544-3. [PMID: 38888643 DOI: 10.1007/s00246-024-03544-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Accepted: 06/07/2024] [Indexed: 06/20/2024]
Abstract
Ideally, the morphology of atrial appendages should solely be used to identify and differentiate patients with isomeric right and left atrial appendages. However, in clinical practice, the segregation is often indirectly based on the arrangement of thoraco-abdominal structures. The correlation between thoraco-abdominal arrangement and atrial appendages, however, is imperfect. In this study, we sought to clarify the cardiovascular malformations in patients with isomeric atrial appendages with an emphasis on atrial-thoracic-abdominal disharmony. A retrospective review of all patients who underwent cardiac CT angiography between January 2014 and June 2023 and identified to have isomeric atrial appendages was performed. Of the 366 cases (median age: 2 years [interquartile range: 11 months-7 years]), 247 (67.5%) patients had isomeric right atrial appendages while 119 (32.5%) patients had isomeric left atrial appendages. In 316 (86.3%) patients, the thoraco-abdominal arrangement was as per atrial appendage morphology while the remaining 50 (13.6%) patients had disharmonious patterns. Compared to isomeric left atrial appendages, the disharmonious pattern was more frequent with isomeric right atrial appendages (5.9% vs. 17.4%; p 0.003). Irrespective of the type of isomerism, disharmony was mostly confined to the level of the abdomen. Not all patients with isomeric atrial appendages have a harmonious thoraco-abdominal arrangement. The atrial-bronchial-abdominal disharmony is more frequent with isomeric right atrial appendages and is mostly present at the level of the abdomen. A detailed sequential segmental analysis with an independent description of each organ system is, therefore, essential for the complete evaluation of patients with isomeric atrial appendages.
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Affiliation(s)
- Pujitha Vidiyala
- Department of Cardiovascular Radiology & Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Niraj Nirmal Pandey
- Department of Cardiovascular Radiology & Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, 110029, India.
| | - Saurabh Kumar Gupta
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Thazhathu Veettil Sreelal
- Department of Cardiovascular Radiology & Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Mansi Verma
- Department of Cardiovascular Radiology & Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Sanjeev Kumar
- Department of Cardiovascular Radiology & Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, 110029, India
| | | | - Priya Jagia
- Department of Cardiovascular Radiology & Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, 110029, India
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Adhikari U, Gurajala V, Raja PD, Ayyappan A, Narasimhaiah D, Gopalakrishnan A. Asplenia in left isomerism. Ann Pediatr Cardiol 2024; 17:134-136. [PMID: 39184122 PMCID: PMC11343397 DOI: 10.4103/apc.apc_4_24] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/31/2024] [Accepted: 04/03/2024] [Indexed: 08/27/2024] Open
Abstract
Anatomical configurations where the viscero-atrial structures do not follow the usual arrangement or mirror-imaged arrangement is described conventionally as heterotaxy. Isomerism in the context of the congenitally malformed heart is a situation where some paired structures on opposite sides of the left-right axis of the body are, in morphologic terms, symmetrical mirror images of each other. It encompasses two separate entities, right and left isomerism, the former being usually associated with asplenia and the latter with polysplenia. We report herein a rare case of left isomerism that is associated with asplenia in a 4-year-old girl.
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Affiliation(s)
- Usnish Adhikari
- Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | - Venkatesh Gurajala
- Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | - Palanisamy Dinesh Raja
- Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | - Anoop Ayyappan
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | - Deepti Narasimhaiah
- Department of Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | - Arun Gopalakrishnan
- Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
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Post-operative Morbidity and Mortality After Fontan Procedure in Patients with Heterotaxy and Other Situs Anomalies. Pediatr Cardiol 2022; 43:952-959. [PMID: 35064275 DOI: 10.1007/s00246-021-02804-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 12/09/2021] [Indexed: 10/19/2022]
Abstract
Heterotaxy is a complex, multisystem disorder associated with single ventricle heart disease and decreased survival. Ciliary dysfunction is common in heterotaxy and other situs abnormalities (H/SA) and may increase post-operative complications. We hypothesized that patients with H/SA have increased respiratory and renal morbidities and increased in-hospital mortality after Fontan procedure. We queried the Pediatric Health Information System database for hospitalizations with ICD-9/10 codes for Fontan procedure in patients aged 1 through 11 years from 2004 to 2019. H/SA was identified by codes for dextrocardia, situs inversus, asplenia/polysplenia, or atrial isomerism and compared to non-H/SA controls. Outcomes were in-hospital mortality or heart transplantation, ECMO, hemodialysis, length of stay (LOS), and mechanical ventilation or vasoactive medication use ≥ 4 days. We adjusted estimates with multivariable logistic regression. Of 7897 patients at 50 centers, 1366 (17%) met criteria for H/SA. H/SA had worse outcomes for all study measures: death/transplantation (1.9 vs 1.1%, OR 1.74 (95% CI 1.01-3.03); p = 0.047), ECMO (3.7 vs 2.3%, OR 1.74 (1.28-2.35); p < 0.001), hemodialysis (2.1 vs 1.2%, OR 1.66 (1.06-2.59); p = 0.026), prolonged mechanical ventilation (13.2% vs 7.6%, OR 1.85 (1.53-2.25); p < 0.001) and vasoactive medication use (29.4 vs 19.7%, OR 1.65 (1.43-1.90), and longer LOS (11 (8-17) vs 9 (7-14) days; p < 0.001). H/SA is associated with increased cardiovascular, renal, and respiratory morbidity, as well as in-hospital mortality after Fontan procedure. Attention to renal and respiratory needs may improve outcomes in this difficult population. The relationship between ciliary dysfunction and lung and renal morbidity should be explored further.
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Spicer DE, Chowdhury UK, Anderson RH, Pandey NN, Sankhyan LK, George N, Goja S, Malik V. The surgical anatomy of hearts with isomeric atrial appendages-implications for surgical management. Eur J Cardiothorac Surg 2022; 62:6540686. [PMID: 35234855 DOI: 10.1093/ejcts/ezac139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/16/2022] [Accepted: 02/22/2022] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES The most severe combinations of cardiac malformations exist in individuals having jumbled-up thoracic and abdominal organs. These patients make up 2 distinct syndromes. As yet, the consensus is lacking on how best to describe the subsets. The subsets are frequently grouped together in terms of 'heterotaxy'. The surgical approaches to the subsets, however, are markedly different. We reviewed our experiences with regard to the anatomy as observed in the autopsy room, by the analysis of computed tomographic studies, and in the operating room, to assess whether the lesions might be segregated on the basis of isomerism of the atrial appendages. METHODS AND RESULTS A review of our findings from the examination of specimens from several archives, along with investigation of a large cohort of patients being prepared for surgical treatment, showed that individuals can uniformly be segregated into subgroups on the basis of isomeric arrangement of the atrial appendages. In all instances, this was made possible by using the criterion of the extent of the pectinate muscles within the appendages as judged relative to the atrial vestibules. Segregation on this basis, which correlated excellently with the bronchial arrangement, sets the scene for an appropriate description of the remainder of the heart, providing the cardiac surgeon with all the inferences required for appropriate surgical intervention. CONCLUSIONS When assessing individuals having the features of so-called 'heterotaxy', it is possible to segregate the groups into subsets of individuals having either isomeric right or left atrial appendages. This approach provides the framework for the assessment of appropriate surgical management.
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Affiliation(s)
- Diane E Spicer
- Heart Institute, Johns Hopkins All Children's Hospital, St. Petersburg, FL, USA.,Department of Pediatric Cardiology, University of Florida, Gainesville, FL, USA
| | | | - Robert H Anderson
- Institute of Biomedical Sciences, Newcastle University, Newcastle-upon-Tyne, UK
| | - Niraj Nirmal Pandey
- Cardiothoracic Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Lakshmi Kumari Sankhyan
- Department of Cardiothoracic Surgery, All India Institute of Medical Sciences, Bilaspur, India
| | - Niwin George
- Cardiothoracic Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Shikha Goja
- Cardiothoracic Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Vishwas Malik
- Cardiothoracic Centre, All India Institute of Medical Sciences, New Delhi, India
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Chowdhury UK, Anderson RH, Spicer DE, Sankhyan LK, Pandey NN, Goja S, Rajasekar P, Arvind B, Pradeep D. Surgical management of hearts with isomeric atrial appendages. J Card Surg 2022; 37:1340-1352. [PMID: 35122446 DOI: 10.1111/jocs.16268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 01/03/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND AIM On the basis of previously published accounts, coupled with our own experience, we have assessed the surgical approaches to patients with isomeric atrial appendages. METHODS We reviewed pertinent published studies on surgical treatment of individuals with isomeric atrial appendages, with the pertinent surgical details provided by most of the manuscripts. RESULTS Half of patients with right isomerism, and two-thirds of those with left isomerism have bilateral superior caval veins. Azygos extension of the inferior caval vein is reported in three-quarters of those with left isomerism. The coronary sinus is universally absent in right isomerism, along with totally anomalous pulmonary venous connection, and is absent in two-fifths of those with left isomerism. Univentricular atrioventricular connections are expected in up to three-quarters of those with right isomerism. Atrioventricular septal defect is reported in up to four-fifths, more frequently in right isomerism, with such patients typically having discordant ventriculoatrial connections or double outlet right ventricle. Reported mortalities extend to 85% for those with right, and 50% for those with left isomerism. In right isomerism, mortality is up to 54% for systemic-to-pulmonary arterial shunting, up to 75% for univentricular repair, and up to 95% for repair of totally anomalous pulmonary venous connection itself. No more than one-quarter had undergone Fontan completion, with reported mortalities of 21%. CONCLUSION Early surgical results are satisfactory in patients with left isomerism, but disappointing for those with right. Recent advances in cardiac and liver transplantation may offer improved survival.
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Affiliation(s)
- Ujjwal Kumar Chowdhury
- Department of Cardiothoracic and Vascular Surgery, All India Institute of Medical Sciences, New Delhi, India
| | - Robert H Anderson
- Institute of Biomedical Sciences, Newcastle University, Newcastle-upon-Tyne, UK
| | - Diane E Spicer
- Heart Institute, Johns Hopkins All Children's Hospital, St. Petersburg, Florida, USA.,Department of Pediatric Cardiology, University of Florida, Gainesville, Florida, USA
| | - Lakshmi K Sankhyan
- Department of Cardiothoracic Surgery, All India Institute of Medical Sciences, Bilaspur, India
| | - Niraj N Pandey
- Department of Cardiac Radiology, All India Institute of Medical Sciences, New Delhi, India
| | - Shikha Goja
- Department of Cardiothoracic and Vascular Surgery, All India Institute of Medical Sciences, New Delhi, India
| | - Palleti Rajasekar
- Department of Cardiothoracic and Vascular Surgery, All India Institute of Medical Sciences, New Delhi, India
| | - Balaji Arvind
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Doniparthi Pradeep
- Department of Cardiothoracic and Vascular Surgery, All India Institute of Medical Sciences, New Delhi, India
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Seidl-Mlczoch E, Kasprian G, Kitzmueller E, Zimpfer D, Steiner I, Jowett V, Stuempflen M, Wielandner A, Ulm B, Michel-Behnke I. Discordant Post-natal Patterns in Fetuses With Heterotaxy Syndrome: A Retrospective Single-Centre Series on Outcome After Fetal Diagnosis. Front Pediatr 2022; 10:908505. [PMID: 35911827 PMCID: PMC9329514 DOI: 10.3389/fped.2022.908505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 06/16/2022] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE Cardiac and extra-cardiac anomalies in 46 pre-natally diagnosed cases of heterotaxy were compared to post-natal anatomical patterns in order to reveal discordant findings. Second, the outcome of these fetuses was evaluated. METHODS Fetuses with heterotaxy, diagnosed in a tertiary referral centre, were analysed retrospectively. Based on the foetal abdominal situs view, right atrial isomerism (RAI) and left atrial isomerism (LAI) were defined as foetal sub-types. Post-natally, discordant anatomical patterns for broncho-pulmonary branching, atrial appendage morphology, and splenic status were further clarified with CT scans. In summary, the spectrum of pre-natally and post-natally detected cardiac and extra-cardiac anomalies is systematically reviewed. Necessary surgical interventions and mid-long-term outcomes were compared between the two sub-types in surviving infants. RESULTS A total of 46 fetuses with heterotaxy were included; LAI was diagnosed in 29 (63%) fetuses and RAI was diagnosed in 17 (37%) fetuses. Extra-cardiac anomalies were noted in 35% of fetuses. Seven out of the 29 fetuses (24%) with LAI had atrio-ventricular block (AVB) and four of these cases presented with hydrops. Twenty nine out of the 46 participating fetuses (63%) were live births, with 62% in the LAI group and 65% in the RAI group. Five fetuses were lost to follow-up. At the age of 1 year, the overall survival of live births [estimate (95% CI)] was 67% (48; 92%) in patients with LAI and 55% (32; 94%) in patients with RAI. At the age of 5 years, the estimates were 67% (48; 92%) in the LAI group and 46% (24-87%) in the RAI group. The median survival (first quartile; third quartile) was 11.1 (0.1; 14) years for patients with LAI and 1.3 (0.09; NA) years for patients with RAI. Of 17 children who had undergone cardiac surgery, five (29%) children achieved a bi-ventricular repair and 12 (70%) children achieved a uni-ventricular palliation. Three were primarily palliated, but converted to bi-ventricular thereafter. Foetal subtype definition of heterotaxy based on the abdominal situs and post-natal thoracic imaging studies showed a discordant pattern of broncho-pulmonary branching and atrial appendage anatomy in 40% of our live-born children. CONCLUSION Heterotaxy is a rare and complex condition with significant morbidity and mortality related to severe cardiac and extra-cardiac associations. Accurate pre-natal diagnosis can help identify the fetuses at risk and allow for timely intervention in a multi-disciplinary setting. Further studies are warranted to shed light on the exact sub-type definition in fetuses with heterotaxy and the presence of discordant post-natal patterns.
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Affiliation(s)
- Elisabeth Seidl-Mlczoch
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric Cardiology, Pediatric Heart Center, Medical University of Vienna, Vienna, Austria
| | - Gregor Kasprian
- Department of Biomedical Imaging and Image-Guided Therapy, Division of Neuroradiology and Musculoskeletal Radiology, Medical University of Vienna, Vienna, Austria
| | - Erwin Kitzmueller
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric Cardiology, Pediatric Heart Center, Medical University of Vienna, Vienna, Austria
| | - Daniel Zimpfer
- Department of Cardiac Surgery, Pediatric Heart Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Irene Steiner
- Section for Medical Statistics, Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Victoria Jowett
- Department of Fetal Cardiology, Great Ormond Street Hospital, London, United Kingdom
| | - Marlene Stuempflen
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric Cardiology, Pediatric Heart Center, Medical University of Vienna, Vienna, Austria
| | - Alice Wielandner
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric Cardiology, Pediatric Heart Center, Medical University of Vienna, Vienna, Austria
| | - Barbara Ulm
- Department of Obstetrics and Gynaecology, Division of Obstetrics and Fetomaternal Medicine, Medical University of Vienna, Vienna, Austria
| | - Ina Michel-Behnke
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric Cardiology, Pediatric Heart Center, Medical University of Vienna, Vienna, Austria
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Seidl‐Mlczoch E, Kasprian G, Ba‐ssalamah A, Stuempflen M, Kitzmueller E, Muin DA, Zimpfer D, Prayer D, Michel‐behnke I, Ulm B. Characterization of phenotypic spectrum of fetal heterotaxy syndrome by combining ultrasound and magnetic resonance imaging. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2021; 58:837-845. [PMID: 34097330 PMCID: PMC9299896 DOI: 10.1002/uog.23705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/27/2021] [Accepted: 05/28/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVE Heterotaxy or isomerism of the atrial appendages is a congenital disorder with variable presentation, associated with both cardiac and non-cardiac anomalies, which may have a serious impact on fetal outcome. The aim of this exploratory study was to assess the value of fetal magnetic resonance imaging (MRI), as a complementary tool to ultrasound, for describing the morphological spectrum encountered in heterotaxy. METHODS This retrospective study included 27 fetuses that underwent fetal MRI following prenatal suspicion of heterotaxy on ultrasound from 1998 to 2019 in a tertiary referral center. Heterotaxy was classified as left atrial isomerism (LAI) or right atrial isomerism (RAI) based on fetal echocardiography (FE) examination. In addition to routine prenatal ultrasound, fetal MRI was offered routinely to enhance the diagnosis of non-cardiac anomalies, which might have been missed on ultrasound. Prenatal findings on ultrasound, FE and MRI were reviewed systematically and compared with those of postnatal imaging and autopsy reports. RESULTS Twenty-seven fetuses with heterotaxy and cardiovascular pathology, of which 19 (70%) had LAI and eight (30%) had RAI, were included. Seven (7/19 (37%)) fetuses with LAI had normal intracardiac anatomy, whereas all fetuses with RAI had a cardiac malformation. All 27 fetuses had non-cardiac anomalies on fetal MRI, including situs and splenic anomalies. In 12/19 (63%) fetuses with LAI, a specific abnormal configuration of the liver was observed on MRI. In three fetuses, fetal MRI revealed signs of total anomalous pulmonary venous connection obstruction. An abnormal bronchial tree pattern was suspected on prenatal MRI in 6/19 (32%) fetuses with LAI and 3/8 (38%) fetuses with RAI. CONCLUSIONS Visualization on MRI of non-cardiac anomalies in fetuses with suspected heterotaxy is feasible and can assist the complex diagnosis of this condition, despite its limitations. This modality potentially enables differentiation of less severe cases from more complex ones, which may have a poorer prognosis. Fetal MRI can assist in prenatal counseling and planning postnatal management. © 2021 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- E. Seidl‐Mlczoch
- Pediatric Heart Center, Department of Pediatrics and Adolescent Medicine, Division of Pediatric CardiologyMedical University of ViennaViennaAustria
| | - G. Kasprian
- Department of Biomedical Imaging and Image‐guided Therapy, Division of Neuroradiology and Musculoskeletal RadiologyMedical University of Vienna, ViennaAustria
| | - A. Ba‐ssalamah
- Department of Biomedical Imaging and Image‐guided Therapy, Division of Neuroradiology and Musculoskeletal RadiologyMedical University of Vienna, ViennaAustria
| | - M. Stuempflen
- Department of Biomedical Imaging and Image‐guided Therapy, Division of Neuroradiology and Musculoskeletal RadiologyMedical University of Vienna, ViennaAustria
| | - E. Kitzmueller
- Pediatric Heart Center, Department of Pediatrics and Adolescent Medicine, Division of Pediatric CardiologyMedical University of ViennaViennaAustria
| | - D. A. Muin
- Department of Obstetrics and Gynaecology, Division of Obstetrics and Fetomaternal MedicineMedical University of Vienna, ViennaAustria
| | - D. Zimpfer
- Department of Cardiac Surgery, Pediatric Heart Center ViennaMedical University of Vienna, ViennaAustria
| | - D. Prayer
- Department of Biomedical Imaging and Image‐guided Therapy, Division of Neuroradiology and Musculoskeletal RadiologyMedical University of Vienna, ViennaAustria
| | - I. Michel‐behnke
- Pediatric Heart Center, Department of Pediatrics and Adolescent Medicine, Division of Pediatric CardiologyMedical University of ViennaViennaAustria
| | - B. Ulm
- Department of Obstetrics and Gynaecology, Division of Obstetrics and Fetomaternal MedicineMedical University of Vienna, ViennaAustria
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Wang X, Chen S, Tu P, Liu X, Zhang X, Han J, Dong H, Ran S, He Y. Fetal Ultrasonic Evaluation of Bronchial Morphology in Fetuses with Isomerism. Fetal Diagn Ther 2021; 48:641-650. [PMID: 34510037 DOI: 10.1159/000515250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 02/15/2021] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The aim of the study was to evaluate whether fetal ultrasound could determine bronchial isomerism and distinguish left isomerism from right isomerism. METHODS We identified 110 healthy fetuses and 28 fetuses with isomerism. The outer angle between the tracheal midline and the inner margin of the bronchus is measured. The bronchial angles and the ratio of left/right bronchial angle were used to differentiate bronchial morphology and confirm the presence of bronchial isomerism in pathological cases. RESULTS The normal angles of the left and right bronchi were 146.98° (95% CI, 145.15-147.81°) and 167.37° (95% CI, 166.30-168.44°), separately. The cutoff bronchial angle of 156.5° was used to distinguish left bronchus from right bronchus. The bronchial isomerism could be identified in all pathological cases by autopsy and bronchial-atrial concordance occurred in 27 pathological cases (96.4%). In 21 pathological cases, the bilateral bronchial angle was <156.5 versus >156.5 differentiated left from right isomerism, respectively. The ratio of the left/right bronchial angle of >0.935 identified 92.9% (26/28) of all pathological cases, with a sensitivity of 89.7%. CONCLUSIONS Fetal ultrasound can detect the bronchial morphology and the presence of bronchial isomerism in fetuses with isomerism according to bronchial angles and the ratio of left/right bronchial angle.
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Affiliation(s)
- Xin Wang
- Maternal-Fetal Consultation Center of Congenital Heart Disease, Echocardiography Medical Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Song Chen
- Department of Ultrasound Diagnosis, Chongqing Health Center for Women and Children, Chongqing, China
| | - Peng Tu
- Department of Ultrasound Diagnosis, Chongqing Health Center for Women and Children, Chongqing, China
| | - Xiaowei Liu
- Maternal-Fetal Consultation Center of Congenital Heart Disease, Echocardiography Medical Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xiaohang Zhang
- Department of Ultrasound Diagnosis, Chongqing Health Center for Women and Children, Chongqing, China
| | - Jiancheng Han
- Maternal-Fetal Consultation Center of Congenital Heart Disease, Echocardiography Medical Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Hongmei Dong
- Department of Ultrasound Diagnosis, Chongqing Health Center for Women and Children, Chongqing, China
| | - Suzhen Ran
- Department of Ultrasound Diagnosis, Chongqing Health Center for Women and Children, Chongqing, China
| | - Yihua He
- Maternal-Fetal Consultation Center of Congenital Heart Disease, Echocardiography Medical Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
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Abnormal origin of the left pulmonary artery from the descending aorta and heterotaxy syndrome: an undescribed phenotypic association. Cardiol Young 2021; 31:1193-1196. [PMID: 34082847 DOI: 10.1017/s1047951121002183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Extensive screening in a newborn with prenatal suspicion of VACTERL syndrome identified an anomalous origin of the left pulmonary artery from the descending aorta with an arterial duct and left aortic arch, and normal intra-cardiac anatomy. Other anatomical anomalies suggested heterotaxy syndrome. At one-month-old, re-implantation of the 3.5 mm left pulmonary artery was performed by direct tension-low anastomosis. Post-operative course was complicated by severe left pulmonary atelectasis, and the patient died 20 days later.
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Farruggio S, Agati S, Calvaruso D, Mambro CD, Caruso E. Atrioventricular Discordance with Double-Outlet Right Ventricle in Mirror Imagery and Levocardia: A Very Rare Case Report. J Cardiovasc Echogr 2021; 30:227-230. [PMID: 33828947 PMCID: PMC8021085 DOI: 10.4103/jcecho.jcecho_65_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 10/15/2020] [Accepted: 10/18/2020] [Indexed: 12/04/2022] Open
Abstract
A newborn without prenatal diagnosis, with bronchial and abdominal situs inversus in levocardia, was referred to our hospital for accurate evaluation; echocardiography showed venoatrial connections in mirror-image arrangement, atrioventricular (AV) discordance, and double-outlet right ventricle (DORV). Additional cardiac malformations were double upper caval district, atrial communication, subpulmonary interventricular communication, and moderate subvalvular and valvular pulmonary stenosis. Few days after birth, the patient presented low oxygen saturation and the heart team decided for a palliative surgery. We describe a very rare case in a newborn with bronchial-abdominal mirror imagery, AV discordance, and DORV in levocardia.
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Affiliation(s)
- Silvia Farruggio
- Mediterranean Pediatric Cardiology Center "Bambino Gesù", San Vincenzo Hospital, Taormina, ME, Italy
| | - Salvatore Agati
- Mediterranean Pediatric Cardiology Center "Bambino Gesù", San Vincenzo Hospital, Taormina, ME, Italy
| | - Davide Calvaruso
- Mediterranean Pediatric Cardiology Center "Bambino Gesù", San Vincenzo Hospital, Taormina, ME, Italy
| | - Corrado Di Mambro
- Mediterranean Pediatric Cardiology Center "Bambino Gesù", San Vincenzo Hospital, Taormina, ME, Italy
| | - Elio Caruso
- Mediterranean Pediatric Cardiology Center "Bambino Gesù", San Vincenzo Hospital, Taormina, ME, Italy
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13
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Abstract
Heterotaxy is a generalized term for patients who have an abnormality of laterality that cannot be described as situs inversus. Infants with heterotaxy can have significant anatomic and medical complexity and require personalized, specialized care, including comprehensive anatomic assessment. Common and rare anatomic findings are reviewed by system to help guide a thorough phenotypic evaluation. General care guidelines and considerations unique to this patient population are included. Future directions for this unique patient population, particularly in light of improved neonatal survival, are discussed.
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Affiliation(s)
- Gabrielle C Geddes
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA; Herma Heart Institute, Children's Hospital of Wisconsin, 9000 West Wisconsin Avenue, MS#716, Milwaukee, WI 53226, USA.
| | - Sai-Suma Samudrala
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Michael G Earing
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA; Herma Heart Institute, Children's Hospital of Wisconsin, 9000 West Wisconsin Avenue, MS#716, Milwaukee, WI 53226, USA; Section of Adult Cardiovascular Medicine, Department of Internal Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
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Yim D, Nagata H, Lam CZ, Grosse-Wortmann L, Seed M, Jaeggi E, Yoo SJ. Disharmonious Patterns of Heterotaxy and Isomerism: How Often Are the Classic Patterns Breached? Circ Cardiovasc Imaging 2019; 11:e006917. [PMID: 29444810 DOI: 10.1161/circimaging.117.006917] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 12/21/2017] [Indexed: 01/13/2023]
Abstract
BACKGROUND It is advocated that heterotaxy should be segregated into right or left isomerism according to atrial appendage morphology. However, atrial situs determination is often based on the pattern of associated findings rather than on atrial morphology itself, which can be difficult to define. The objective was to assess how often concordant patterns of isomerism classified by atrial appendage morphology, bronchopulmonary pattern, and splenic status are breached using cardiac magnetic resonance or computed tomography. The secondary objective was to determine the feasibility of defining atrial appendage morphology using cardiac magnetic resonance or computed tomography. METHODS AND RESULTS Retrospective review of 114 pediatric patients (median, 2.4 years; range, 1 day-17.9 years) with heterotaxy who underwent cardiac magnetic resonance or computed tomography was performed to evaluate atrial appendage, bronchopulmonary, and visceral organ arrangements. Atrial appendage and splenic anatomy were not definable in 17 of 114 (15%) and 4 of 114 (3.5%) patients, respectively. In the remaining 93 patients, 39% had classic right isomerism (bilateral right atrial appendages, right bronchopulmonary pattern, and asplenia) and 40% had classic left isomerism (bilateral left atrial appendages, left bronchopulmonary pattern, and polysplenia). Classic pattern of isomerism was breached in 20 of 93 (21.5%) patients: 13 (65%) displayed incongruent abdominal situs, 5 (25%) incongruent bronchial situs, 1 (5%) had discrepant appendage morphology, and 1 (5%) incongruent situs at all levels. CONCLUSIONS Atrial appendage morphology is difficult to assess and not always indicative of bronchopulmonary or abdominal situs. Discordance between bronchopulmonary branching, atrial appendage arrangement, and splenic status was identified in >20% patients with heterotaxy. Independent description of each organ system is required when arrangements are disharmonious among different organ systems.
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Affiliation(s)
- Deane Yim
- From the Labatt Family Heart Centre (D.Y., H.N., L.G.-W., M.S., E.J., S.-J.Y.) and Department of Diagnostic Imaging (C.Z.L., L.G.-W., M.S., S.-J.Y.), The Hospital for Sick Children, Toronto, Canada; and Department of Pediatrics, University of Toronto, Canada (L.G.-W., M.S., E.J., S.-J.Y.)
| | - Hazumu Nagata
- From the Labatt Family Heart Centre (D.Y., H.N., L.G.-W., M.S., E.J., S.-J.Y.) and Department of Diagnostic Imaging (C.Z.L., L.G.-W., M.S., S.-J.Y.), The Hospital for Sick Children, Toronto, Canada; and Department of Pediatrics, University of Toronto, Canada (L.G.-W., M.S., E.J., S.-J.Y.)
| | - Christopher Z Lam
- From the Labatt Family Heart Centre (D.Y., H.N., L.G.-W., M.S., E.J., S.-J.Y.) and Department of Diagnostic Imaging (C.Z.L., L.G.-W., M.S., S.-J.Y.), The Hospital for Sick Children, Toronto, Canada; and Department of Pediatrics, University of Toronto, Canada (L.G.-W., M.S., E.J., S.-J.Y.)
| | - Lars Grosse-Wortmann
- From the Labatt Family Heart Centre (D.Y., H.N., L.G.-W., M.S., E.J., S.-J.Y.) and Department of Diagnostic Imaging (C.Z.L., L.G.-W., M.S., S.-J.Y.), The Hospital for Sick Children, Toronto, Canada; and Department of Pediatrics, University of Toronto, Canada (L.G.-W., M.S., E.J., S.-J.Y.)
| | - Mike Seed
- From the Labatt Family Heart Centre (D.Y., H.N., L.G.-W., M.S., E.J., S.-J.Y.) and Department of Diagnostic Imaging (C.Z.L., L.G.-W., M.S., S.-J.Y.), The Hospital for Sick Children, Toronto, Canada; and Department of Pediatrics, University of Toronto, Canada (L.G.-W., M.S., E.J., S.-J.Y.)
| | - Edgar Jaeggi
- From the Labatt Family Heart Centre (D.Y., H.N., L.G.-W., M.S., E.J., S.-J.Y.) and Department of Diagnostic Imaging (C.Z.L., L.G.-W., M.S., S.-J.Y.), The Hospital for Sick Children, Toronto, Canada; and Department of Pediatrics, University of Toronto, Canada (L.G.-W., M.S., E.J., S.-J.Y.)
| | - Shi-Joon Yoo
- From the Labatt Family Heart Centre (D.Y., H.N., L.G.-W., M.S., E.J., S.-J.Y.) and Department of Diagnostic Imaging (C.Z.L., L.G.-W., M.S., S.-J.Y.), The Hospital for Sick Children, Toronto, Canada; and Department of Pediatrics, University of Toronto, Canada (L.G.-W., M.S., E.J., S.-J.Y.).
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15
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Is an Appreciation of Isomerism the Key to Unlocking the Mysteries of the Cardiac Findings in Heterotaxy? J Cardiovasc Dev Dis 2018; 5:jcdd5010011. [PMID: 29415491 PMCID: PMC5872359 DOI: 10.3390/jcdd5010011] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 01/29/2018] [Accepted: 02/05/2018] [Indexed: 02/06/2023] Open
Abstract
Pediatric cardiologists treating patients with severe congenital cardiac defects define “visceral heterotaxy” on the basis of isomerism of the atrial appendages. The isomeric features represent an obvious manifestation of disruption of left-right asymmetry during embryonic development. Thus, there are two subsets of individuals within the overall syndrome, with features of either right or left isomerism. Within the heart, it is only the atrial appendages that are truly isomeric. The remainder of the cardiac components shows variable morphology, as does the arrangement of the remaining body organs. Order is provided in this potentially chaotic arrangement simply by describing the specific features of each of the systems. These features as defined by clinicians, however, seem less well recognized by those investigating the developmental origins of the disruption of symmetry. Developmental biologists place much greater emphasis on ventricular looping. Although the direction of the loop can certainly be interpreted as representing an example of asymmetry, it is not comparable to the isomeric features that underscore the clinical syndromes. This is because, thus far, there is no evidence of ventricular isomerism, with the ventricles distinguished one from the other on the basis of their disparate anatomical features. In similar fashion, some consider transposition to represent abnormal lateralization, but again, clinical diagnosis depends on recognition of the lateralized features. In this review, therefore, we discuss the key questions that currently underscore the mismatch in the approaches to “lateralization” as taken by clinicians and developmental biologists.
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Dabadie A, Kheiri M, Pico H, Gorincour G, Quarello E. Prenatal abnormal features of fetal mainstem bronchi: back to the basics. Prenat Diagn 2017; 37:716-719. [PMID: 28453862 DOI: 10.1002/pd.5061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/28/2017] [Accepted: 04/21/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Alexia Dabadie
- Department of Prenatal and Pediatric Imaging, La Timone Children Hospital, Marseille, France
| | - Mélinda Kheiri
- Department of Prenatal and Pediatric Imaging, La Timone Children Hospital, Marseille, France
| | - Harmony Pico
- Department of Prenatal and Pediatric Imaging, La Timone Children Hospital, Marseille, France
| | - Guillaume Gorincour
- Department of Prenatal and Pediatric Imaging, La Timone Children Hospital, Marseille, France
| | - Edwin Quarello
- Medicine Institute of Reproduction, Marseille, France.,Screening and Diagnosis Ultrasonographic Unit, Saint Joseph Hospital, Marseille, France
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17
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Loomba RS, Danduran M, Nielsen KG, Ring AM, Kovach J, Anderson RH. Cardiopulmonary Exercise Testing in Fontan Patients With and Without Isomerism (Heterotaxy) as Compared to Patients With Primary Ciliary Dyskinesia and Subjects With Structurally Normal Hearts. Pediatr Cardiol 2017; 38:410-417. [PMID: 27878633 DOI: 10.1007/s00246-016-1531-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Accepted: 11/12/2016] [Indexed: 11/26/2022]
Abstract
Isomerism, also known as heterotaxy, is a clinical entity that impacts multiple organ systems both anatomically and functionally. The airways and lungs are involved in a great number of these patients, leading to increased sinopulmonary symptoms, increased need for oxygenation, and increased postoperative ventilatory support. Additionally, these patients often have congenital heart disease requiring Fontan palliation. What has not been previously described, and is the focus of this study, is the results of cardiopulmonary exercise testing in those who have undergone Fontan palliation with and without isomerism. We have now compared these finding with those from patients with primary ciliary dyskinesia, as many patients with isomerism have ciliary dyskinesia. We identified patients having the Fontan circulation with and without isomerism who had undergone cardiopulmonary exercise testing, comparing the findings from healthy individuals undergoing exercise, and a comparable number of individuals with primary ciliary dyskinesia but no congenital heart disease. We were able to include a total of 68 patients in our study, with 17 in each of the four groups. Cardiopulmonary exercise testing yielded the best results in healthy patients. All patients with the Fontan circulation demonstrated mixed pulmonary disease, although those with isomerism had greater FVC and FEV1. Exercise times did not differ, although peak consumption of oxygen was greater in those with isomerism. Those with ciliary dyskinesia had only obstructive pulmonary disease and had the lowest FEF25-75 between all groups. Those with isomerism had a lesser degree of obstructive pulmonary disease when compared to those with primary ciliary dyskinesia. Patients with the Fontan circulation with and without isomerism have relatively subtle differences in their cardiopulmonary exercise testing, with both groups demonstrating restrictive lung disease. In regard to obstructive lung disease, those with isomerism tend to be more similar to the patients with primary ciliary dyskinesia than those with the Fontan circulation but without isomerism. The results are likely limited by selection bias and highlight the need for multicentric efforts to characterize cardiopulmonary exercise testing in those patients with pulmonary isomerism.
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Affiliation(s)
- Rohit S Loomba
- Children's Hospital of Wisconsin/Medical College of Wisconsin, Milwaukee, WI, USA.
| | - Michael Danduran
- Children's Hospital of Wisconsin/Medical College of Wisconsin, Milwaukee, WI, USA
| | | | | | - Joshua Kovach
- Children's Hospital of Wisconsin/Medical College of Wisconsin, Milwaukee, WI, USA
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Characteristics of Hospitalizations for the Glenn Procedure in Those With Isomerism Compared to Those Without. Pediatr Cardiol 2016; 37:1409-1415. [PMID: 27393478 DOI: 10.1007/s00246-016-1449-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 06/23/2016] [Indexed: 10/21/2022]
Abstract
Isomerism, also known as heterotaxy, is a unique clinical entity in which there are mirror imaged findings in the thoracic. In the abdomen, the arrangement of organs can be random. The anatomic findings also have functional consequences. Isomerism has been known to increase morbidity and mortality in those with functionally univentricular hearts. The aim of this study was to determine the impact of isomerism on the Glenn hospitalization. Data from the 1997 to 2012 Kids' Inpatient Database were utilized for this cross-sectional study. Admissions during which a Glenn procedure was done were identified. Next, these admissions were separated into those with and without isomerism. Admission characteristics were then compared in a univariate fashion as well as by regression analysis. Length of hospitalization, cost of hospitalization, extracorporeal membrane oxygenation, and inpatient mortality were the outcomes of interest. A total of 4959 admissions with a Glenn procedure were identified. Of these, 450 were associated with isomerism. The median age at which the Glenn procedure was done was 10 and 13 months in those without and with isomerism, respectively. Neither univariate nor regression analysis demonstrated any significant difference in length of hospitalization, cost of hospitalization, need for extracorporeal membrane oxygenation, and inpatient mortality between those with and without isomerism. Isomerism does not impact the characteristics of the Glenn hospitalization. Those with isomerism did tend to be older when they underwent the Glenn procedure.
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19
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Loomba RS. Importance of Appropriate, Detailed Description in the Setting of Isomerism. Radiographics 2016; 36:941. [DOI: 10.1148/rg.2016160008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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20
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Loomba RS, Aggarwal S, Gupta N, Buelow M, Alla V, Arora RR, Anderson RH. Arrhythmias in Adult Congenital Patients With Bodily Isomerism. Pediatr Cardiol 2016; 37:330-7. [PMID: 26481118 DOI: 10.1007/s00246-015-1281-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 10/07/2015] [Indexed: 11/26/2022]
Abstract
There are an increasing number of adults with congenital heart disease, some of whom have bodily isomerism. Bodily isomerism or heterotaxy is a unique clinical entity associated with congenital malformations of the heart which further increases the risk for future cardiovascular complications. We aimed to investigate the frequency of arrhythmias in adults with bodily isomerism. We utilized the 2012 iteration of the Nationwide Inpatient Sample to identify adult inpatient admissions associated with arrhythmias in patients with isomerism. Data regarding demographics, comorbidities, and various procedures were collected and compared between those with and without isomerism. A total of 6,907,109 admissions were analyzed with a total of 861 being associated isomerism. The frequency of arrhythmias was greater in those with isomerism (20.8 vs. 15.4 %). Those with isomerism were also more five times more likely to undergo invasive electrophysiology studies. Length and cost of hospitalization for patients with arrhythmias also tended to be greater in those with isomerism. Mortality did not differ between the two groups. Arrhythmias are more prevalent in those with isomerism, with a majority of arrhythmias in isomerism being atrial. Those with isomerism and arrhythmias also tended to have greater length and cost of hospitalization.
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Affiliation(s)
| | | | | | | | - Venkata Alla
- Creighton University Medical Center, Omaha, NE, USA
| | | | - Robert H Anderson
- Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
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21
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Loomba R, Shah PH, Anderson RH, Arora Y. Radiologic Considerations in Heterotaxy: The Need for Detailed Anatomic Evaluation. Cureus 2016; 8:e470. [PMID: 26973805 PMCID: PMC4771576 DOI: 10.7759/cureus.470] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
So-called "heterotaxy" is a laterality defect characterized by isomerism of the thoracic organs and random arrangement of the abdominal organs. These findings go beyond anatomic curiosity and have functional implications. It is, thus, of the utmost importance to be able to properly identify these findings. Radiologic studies can be invaluable in determining anomalies in the central nervous, pulmonary, cardiovascular, gastrointestinal, genitourinary, and immunologic systems in patients with isomerism. Here, we review findings associated with isomerism and their importance in the setting of isomerism with the aim of ensuring that radiologists effectively describe findings in these patients and that cardiologists understand the wide variety of congenital malformations that may be present.
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Affiliation(s)
- Rohit Loomba
- Department of Cardiology, Children's Hospital of Wisconsin
| | - Parinda H Shah
- Department of Radiology, Advocate Illinois Masonic Medical Center
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22
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Abstract
Introduction Bodily isomerism, also known as heterotaxy, is a unique entity in which there is mirror imagery in various organ systems. Those with isomerism will often have congenital malformations of the heart requiring functionally univentricular palliation. Anecdotally, thrombocytosis has been noted with higher frequency in patients with isomerism. This study aimed to determine the prevalence of thrombocytosis at different stages and identify independent predictors of thrombocytosis. Methods We identified patients with isomerism and a functionally univentricular heart who received care at our institution between January 1998 and January 2014. Clinical data regarding these patients was collected via chart review. Platelet counts were collected before initial surgical palliation, the day prior to second surgical palliation, and the day prior to the third surgical palliation. Platelet counts from the first postoperative day following all three surgical palliations was also collected. Mean platelet counts were compared between consecutive stages as well as to the initial platelet count. The frequency of thrombocytosis was also calculated at each point with a binomial logistic regression conducted to determine independent risk factors of thrombocytosis at each time point. Results A total of 57 patients were included in the analysis. The mean platelet count before initial surgical palliation was 349.21 x 109/L and decreased with age. Thrombocytosis was noted in 15.8% prior to initial surgical palliation and 23.6% prior to second surgical palliation. Thrombocytosis was no longer noted after second surgical palliation. No independent risk factors for thrombocytosis were identified. Conclusion Thrombocytosis is not infrequent during the first year of life in those with isomerism. It is important to be vigilant of platelet counts in this population as thrombocytosis may lead to increased thromboembolic events, particularly in the setting of a Blalock-Taussig shunt. Thrombocytosis nearly always resolves after the second surgical palliation.
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Affiliation(s)
- Rohit Loomba
- Department of Cardiology, Children's Hospital of Wisconsin
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