1
|
Tanaka S, Imamura T, Fukuda N, Ueno H, Kinugawa K. Left Atrial Stiffness Increases after Trans-Catheter Atrial Septal Closure. J Clin Med 2024; 13:327. [PMID: 38256461 PMCID: PMC10816685 DOI: 10.3390/jcm13020327] [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: 12/02/2023] [Revised: 12/29/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND Transcatheter atrial septal closures for secundum atrial septal defects (ASD) have demonstrated favorable clinical outcomes. However, the impact of device implantation on the stiffness of the left atrium remains unclear. METHOD Patients with secundum ASD undergoing transcatheter closure and follow-up right heart catheterization at six months were included. We investigated the relationship between post-procedural (E/e' ratio)/(LAs strain) ratio, an index of left atrial stiffness, and baseline characteristics, including echocardiographic and hemodynamic parameters. RESULTS Forty patients were included (median 69 (56, 75) years, 12 men, and pulmonary systemic flow ratio 2.27 (1.96, 2.86)). Trans-catheter ASD closure was successfully performed without any major complications, accompanying a significant reduction in right ventricular to left ventricular size ratio from 1.04 (0.87, 1.13) to 0.74 (0.66, 0.86) (p < 0.01). The (E/e' ratio)/(LAs strain) ratio was markedly elevated the day after the procedure and was further increased 6 months later (before: 0.25 (0.17, 0.34), 1 day later: 0.34 (0.27, 0.50), 6 months later: 0.43 (0.27, 0.76), p < 0.01). The groups with higher (E/e' ratio)/(LAs strain) ratios at 6 months had significantly more severe heart failure conditions including lower cardiac output and higher plasma B-type natriuretic peptides. CONCLUSIONS Patients undergoing transcatheter ASD closure experienced improvement in hemodynamics and clinical symptoms but an elevation in left atrial stiffness post-procedure. The clinical ramifications of this finding, particularly during the longer-term observation period subsequent to ASD closure, warrant further investigation.
Collapse
Affiliation(s)
| | - Teruhiko Imamura
- Second Department of Internal Medicine, University of Toyama, Toyama 930-0194, Japan; (S.T.); (N.F.); (H.U.); (K.K.)
| | | | | | | |
Collapse
|
2
|
Baroutidou A, Arvanitaki A, Farmakis IT, Patsiou V, Giannopoulos A, Efthimiadis G, Ziakas A, Giannakoulas G. Transcatheter closure of atrial septal defect in the elderly: a systematic review and meta-analysis. Heart 2023; 109:1741-1750. [PMID: 37380331 DOI: 10.1136/heartjnl-2023-322529] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 05/25/2023] [Indexed: 06/30/2023] Open
Abstract
OBJECTIVE Despite the establishment of transcatheter closure as the treatment of choice in adults with secundum atrial septal defects (ASDs), the effectiveness of this approach in the elderly is disputed. This systematic review and meta-analysis aims to explore the impact of transcatheter ASD closure in patients ≥60 years old. METHODS We systematically searched four major electronic databases (PubMed, CENTRAL (Cochrane Central Register of Controlled Trials), Scopus and Web of Science), ClinicalTrials.gov, article references and grey literature. Primary outcomes were the right ventricular end-diastolic diameter (RVEDD) and the New York Heart Association functional class change, whereas secondary outcomes included systolic pulmonary arterial pressure (sPAP), left ventricular end-diastolic diameter (LVEDD), brain natriuretic peptide (BNP), tricuspid valve regurgitation (TR) change, as well as the rate of atrial arrhythmias and all-cause mortality. RESULTS In total, 18 single-arm cohorts comprising 1184 patients were included. RVEDD was reduced after ASD closure (standardised mean difference (SMD) -0.9, 95% CI -1.2 to -0.7). Elderly patients had 9.5 times higher odds of being asymptomatic after ASD closure (95% CI 5.06 to 17.79). Furthermore, ASD closure improved sPAP (mean difference (MD) -10.8, 95% CI -14.6 to -7), LVEDD (SMD 0.8, 95% CI 0.7 to 1.0), TR severity (OR 0.39, 95% CI 0.25 to 0.60) and BNP (MD -68.3, 95% CI -114.4 to -22.1). There was a neutral effect of ASD closure on atrial arrhythmias. CONCLUSIONS Transcatheter ASD closure is beneficial for the elderly population since it improves functional capacity, biventricular dimensions, pulmonary pressures, TR severity and BNP. However, the incidence of atrial arrhythmias did not change significantly after the intervention. PROSPERO REGISTRATION NUMBER CRD42022378574.
Collapse
Affiliation(s)
- Amalia Baroutidou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Central Macedonia, Greece
| | - Alexandra Arvanitaki
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Central Macedonia, Greece
- Centre for Adult Congenital Heart Disease, Royal Brompton Hospital, Guy's and St Thoma's Foundation Trust, London, UK
| | - Ioannis T Farmakis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Central Macedonia, Greece
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Vasiliki Patsiou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Central Macedonia, Greece
| | - Andreas Giannopoulos
- Pediatric Department, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Central Macedonia, Greece
| | - Georgios Efthimiadis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Central Macedonia, Greece
| | - Antonios Ziakas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Central Macedonia, Greece
| | - George Giannakoulas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Central Macedonia, Greece
| |
Collapse
|
3
|
OUP accepted manuscript. Eur J Cardiothorac Surg 2022; 62:6524993. [DOI: 10.1093/ejcts/ezac076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 01/05/2022] [Accepted: 01/29/2022] [Indexed: 11/12/2022] Open
|
4
|
Effect of Renal and Left Ventricular Function on Serial Pulmonary Arterial Pressure Changes after Device Closure of Atrial Septal Defect. J Interv Cardiol 2021; 2021:8846656. [PMID: 33536856 PMCID: PMC7834785 DOI: 10.1155/2021/8846656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 12/27/2020] [Accepted: 12/30/2020] [Indexed: 11/17/2022] Open
Abstract
Background The age of candidates for device closure of atrial septal defect (ASD) has been increasing. Thus, concerns exist about dyspnea aggravation or atrial fibrillation development after device closure due to augmentation of left ventricular (LV) and left atrial (LA) preload. This study aimed to examine patterns and determinants of serial pulmonary arterial pressure and left ventricular filling pressure changes after device closure of ASD. Methods Among the 86 consecutive patients who underwent percutaneous device closure of ASD, those with end-stage renal disease or those without pre- or postprocedural Doppler data were excluded. The clinical, transesophageal, and transthoracic echocardiographic findings of 78 patients were collected at baseline, one-day postprocedure, and one-year follow-up. Results The mean age of study patients was 49.8 ± 15.0 years, and the average maximal defect diameter and device size were 20.2 ± 6.0 mm and 23.8 ± 6.4 mm. Four patients (5.6%) underwent new-onset atrial fibrillation, and five patients (6.4%) took diuretics within one-year after closure. Some patients (n = 21; 27%) exhibited paradoxically increased tricuspid regurgitant velocity (TRV) one-day postprocedure; they also were older with lower e', glomerular filtration rate, and LV ejection fraction and a higher LA volume index. However, even in these patients, TRV deceased below baseline levels one-year later. Both E/e' and LA volume index significantly increased immediately after device closure, but all decreased one-year later. Larger defect size and higher TRV were significantly correlated with immediate E/e' elevation. Conclusion In older, renal, diastolic, and systolic dysfunctional patients with larger LA and scheduled for larger device implantation, peri-interventional preload reduction therapy would be beneficial.
Collapse
|
5
|
Giordano M, Gaio G, D'Alto M, Santoro G, Scognamiglio G, Cappelli Bigazzi M, Palladino MT, Sarubbi B, Golino P, Russo MG. Transcatheter closure of atrial septal defect in the elderly: Early outcomes and mid-term follow-up. INTERNATIONAL JOURNAL OF CARDIOLOGY CONGENITAL HEART DISEASE 2020. [DOI: 10.1016/j.ijcchd.2020.100058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
6
|
Ghaderian M, Shahsanaei F, Behdad S, Shirvani E. Long-Term Outcome After Transcatheter Atrial Septal Defect Closure in Adults: A Systematic Review and Meta-Analysis. Curr Probl Cardiol 2020; 46:100595. [PMID: 32684350 DOI: 10.1016/j.cpcardiol.2020.100595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 04/06/2020] [Indexed: 11/30/2022]
Abstract
AIMS We performed a systematic review and meta-analysis of published studies to characterize the current literature and help determine the long-term outcomes after transcatheter ASD closure in adults. METHODS AND RESULTS Two investigators searched the manuscript databases for all eligible studies in accordance with the considered keywords. The pooled prevalence of each event according to the meta-analysis and considering the weight calculated for each study included 10.1% (for arrhythmia), 1.8% (for emboli), 2.3% (for stroke), 12.5% (for residual shunt), 1.8% (for erosion), and 2.5% (for death). CONCLUSION The present meta-analysis show high long-term successfulness of transcatheter ASD closure in adults.
Collapse
|
7
|
Fuertes Moure A, Meyer M, Häcker AL, Reiner B, Brudy L, Oberhoffer R, Ewert P, Müller J. Health-Related Physical Fitness and Quality of Life in Children and Adolescents With Isolated Left-to-Right Shunt. Front Pediatr 2019; 7:488. [PMID: 31824901 PMCID: PMC6882769 DOI: 10.3389/fped.2019.00488] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 11/06/2019] [Indexed: 01/08/2023] Open
Abstract
Objective: Atrial (ASD) and ventricular septal defects (VSD) represent the most common congenital heart defects (CHD) and are considered simple and curable. This study investigates long-term functional outcomes in children with such defects. Patients and Methods : We examined 147 patients (74 girls, 12.1 ± 3.5 years) with isolated shunts (ASD: 54%, VSD: 46%) for their Health-Related Physical Fitness (HRPF) and Health-Related Quality of Life (HRQoL). Native condition was present in 58 patients, interventional closure of the defect was performed in 42 and surgical closure in 47. For comparison, a healthy control group (CG) of 1,724 children (48.9% girls, 12.8 ± 2.8 years) was recruited within two recent school projects. Results: After adjustment for age and sex, children with ASD and VSD presented lower HRPF (z-score healthy peers: 0.02 ± 0.73, ASD: -0.41 ± 0.73, p < 0.001; VSD: -0.61 ± 0.73, p < 0.001) then healthy peers. Transferred into percentiles, VSD were on the 26th and ASD on the 34th percentile of the healthy peers. HRQoL did not differ between peers and CHD with isolated shunts (healthy peers: 76.1 ± 9.7, ASD: 76.2 ± 9.9, p = 0.999; VSD: 78.7 ± 9.7, p = 0.316). Regarding the surgical history of the shunts (native, percutaneously treated, surgically treated), there were also no difference in-between these three states, nor differed HRPF and HRQoL in-between gender. Conclusions: Children with ASD or VSD have impaired HRPF but normal HRQoL. Early childhood sports promotion could be a good measure to counteract these restrictions in HRPF at an early stage.
Collapse
Affiliation(s)
| | - Michael Meyer
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Centre Munich, Technical University Munich, Munich, Germany
| | - Anna-Luisa Häcker
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Centre Munich, Technical University Munich, Munich, Germany.,Institute of Preventive Pediatrics, Technical University Munich, Munich, Germany
| | - Barbara Reiner
- Institute of Preventive Pediatrics, Technical University Munich, Munich, Germany
| | - Leon Brudy
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Centre Munich, Technical University Munich, Munich, Germany
| | - Renate Oberhoffer
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Centre Munich, Technical University Munich, Munich, Germany.,Institute of Preventive Pediatrics, Technical University Munich, Munich, Germany
| | - Peter Ewert
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Centre Munich, Technical University Munich, Munich, Germany
| | - Jan Müller
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Centre Munich, Technical University Munich, Munich, Germany.,Institute of Preventive Pediatrics, Technical University Munich, Munich, Germany
| |
Collapse
|
8
|
FEATURES OF MANAGEMENT OF PATIENTS WITH LATE DIAGNOSTED CONGENITAL HEART DISEASE. WORLD OF MEDICINE AND BIOLOGY 2019. [DOI: 10.26724/2079-8334-2019-1-67-111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
9
|
Abstract
Surgical repair of an atrial septal defect (ASD) is a safe and effective operation with little to no morbidity and mortality. In an effort to reduce the trauma of surgery, current approaches focus on less invasive surgical techniques, rather than the intracardiac repair. We will describe the different types of ASD, techniques for repair, and options for minimally invasive repair.
Collapse
Affiliation(s)
- Matthew Liava'a
- Section of Congenital and Pediatric Cardiac Surgery, Division of Cardiac, Thoracic and Vascular Surgery, New York-Presbyterian Morgan Stanley Children's Hospital, Columbia University Medical Center, New York, NY, USA
| | - David Kalfa
- Section of Congenital and Pediatric Cardiac Surgery, Division of Cardiac, Thoracic and Vascular Surgery, New York-Presbyterian Morgan Stanley Children's Hospital, Columbia University Medical Center, New York, NY, USA
| |
Collapse
|
10
|
Bhatt AB, Foster E, Kuehl K, Alpert J, Brabeck S, Crumb S, Davidson WR, Earing MG, Ghoshhajra BB, Karamlou T, Mital S, Ting J, Tseng ZH. Congenital Heart Disease in the Older Adult. Circulation 2015; 131:1884-931. [DOI: 10.1161/cir.0000000000000204] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
11
|
Chubb H, Whitaker J, Williams SE, Head CE, Chung NA, Wright MJ, O'Neill M. Pathophysiology and Management of Arrhythmias Associated with Atrial Septal Defect and Patent Foramen Ovale. Arrhythm Electrophysiol Rev 2014; 3:168-72. [PMID: 26835086 DOI: 10.15420/aer.2014.3.3.168] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 11/11/2014] [Indexed: 11/04/2022] Open
Abstract
Atrial septal defects (ASDs) are among the most common of congenital heart defects and are frequently associated with atrial arrhythmias. Atrial and ventricular geometrical remodelling secondary to the intracardiac shunt promotes evolution of the electrical substrate, predisposing the patient to atrial fibrillation and other arrhythmias. Closure of an ASD reduces the immediate and long-term prevalence of atrial arrhythmias, but the evidence suggests that patients remain at an increased long-term risk in comparison with the normal population. The closure technique itself and its timing impacts future arrhythmia risk profile while subsequent transseptal access following surgical or device closure is complicated. Newer techniques combined with increased experience will help to alleviate some of the difficulties associated with optimal management of arrhythmias in these patients.
Collapse
Affiliation(s)
- Henry Chubb
- Division of Imaging Sciences and Biomedical Engineering, King's College London; Department of Paediatric Cardiology, Evelina London Children's Hospital
| | - John Whitaker
- Division of Imaging Sciences and Biomedical Engineering, King's College London
| | - Steven E Williams
- Division of Imaging Sciences and Biomedical Engineering, King's College London; Adult Congenital Heart Disease Group, Department of Cardiology, Guy's and St Thomas' NHS Foundation Trust and Evelina London Children's Hospital, London, UK
| | - Catherine E Head
- Adult Congenital Heart Disease Group, Department of Cardiology, Guy's and St Thomas' NHS Foundation Trust and Evelina London Children's Hospital, London, UK
| | - Natali Ay Chung
- Adult Congenital Heart Disease Group, Department of Cardiology, Guy's and St Thomas' NHS Foundation Trust and Evelina London Children's Hospital, London, UK
| | - Matthew J Wright
- Division of Imaging Sciences and Biomedical Engineering, King's College London
| | - Mark O'Neill
- Division of Imaging Sciences and Biomedical Engineering, King's College London; Adult Congenital Heart Disease Group, Department of Cardiology, Guy's and St Thomas' NHS Foundation Trust and Evelina London Children's Hospital, London, UK
| |
Collapse
|
12
|
Abstract
Transcatheter atrial septal defect device implantation in elderly patients may cause acute pulmonary oedema when impaired left ventricular diastolic function causes an abrupt increase in left atrial pressure. Though left atrial pressure is often monitored during test occlusion of a defect, it is not clear at what cut-off value device implantation is contraindicated. We report successful closure of an atrial septal defect in a 73-year-old patient, even though the mean left atrial pressure increased from 18 to 25 mm Hg with device implantation. Although a fenestrated device was used, this did not prevent the rise in left atrial pressure. The patient was supported with mechanical ventilation, milrinone and intravenous diuretics following the procedure and did not develop pulmonary oedema. Her dyspnoea improved and her functional status increased from New York Heart Association (NYHA) III to NYHA II. In conclusion, successful device closure can be accomplished even with high left atrial pressure.
Collapse
Affiliation(s)
- Suhair Omar Shebani
- East Midlands Congenital Heart Centre, Leicester Hospitals NHS Trust, Leicester, Leicestershire, UK
| | - Gregory James Skinner
- East Midlands Congenital Heart Centre, Leicester Hospitals NHS Trust, Leicester, Leicestershire, UK
| | - Christopher Duke
- East Midlands Congenital Heart Centre, Leicester Hospitals NHS Trust, Leicester, Leicestershire, UK
| |
Collapse
|
13
|
Abstract
Atrial septal defects are the third most common type of congenital heart disease. Included in this group of malformations are several types of atrial communications that allow shunting of blood between the systemic and the pulmonary circulations. Most children with isolated atrial septal defects are free of symptoms, but the rates of exercise intolerance, atrial tachyarrhythmias, right ventricular dysfunction, and pulmonary hypertension increase with advancing age and life expectancy is reduced in adults with untreated defects. The risk of development of pulmonary vascular disease, a potentially lethal complication, is higher in female patients and in older adults with untreated defects. Surgical closure is safe and effective and when done before age 25 years is associated with normal life expectancy. Transcatheter closure offers a less invasive alternative for patients with a secundum defect who fulfil anatomical and size criteria. In this Seminar we review the causes, anatomy, pathophysiology, treatment, and outcomes of atrial septal defects in children and adult patients in whom this defect is the primary cardiac anomaly.
Collapse
Affiliation(s)
- Tal Geva
- Department of Cardiology, Boston Children's Hospital, and Department of Pediatrics, Harvard Medical School, Boston, MA, USA.
| | - Jose D Martins
- Department of Pediatric Cardiology, Hospital de Santa Marta, Centro Hospitalar de Lisboa Central, Lisbon, Portugal
| | - Rachel M Wald
- Toronto Congenital Cardiac Centre for Adults, Peter Munk Cardiac Centre, University of Toronto, Toronto, ON, Canada
| |
Collapse
|
14
|
Abaci A, Unlu S, Alsancak Y, Kaya U, Sezenoz B. Short and long term complications of device closure of atrial septal defect and patent foramen ovale: Meta-analysis of 28,142 patients from 203 studies. Catheter Cardiovasc Interv 2013; 82:1123-38. [DOI: 10.1002/ccd.24875] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 01/27/2013] [Accepted: 02/09/2013] [Indexed: 01/15/2023]
Affiliation(s)
- Adnan Abaci
- Department of Cardiology; School of Medicine; Gazi University; Ankara Turkey
| | - Serkan Unlu
- Department of Cardiology; School of Medicine; Gazi University; Ankara Turkey
| | - Yakup Alsancak
- Department of Cardiology; School of Medicine; Gazi University; Ankara Turkey
| | - Ulker Kaya
- Department of Cardiology; School of Medicine; Gazi University; Ankara Turkey
| | - Burak Sezenoz
- Department of Cardiology; School of Medicine; Gazi University; Ankara Turkey
| |
Collapse
|
15
|
Abstract
Ostium secundum-type atrial septal defect closure has evolved from a surgical procedure requiring cardiopulmonary bypass to a percutaneous, catheter-based procedure usually requiring only an overnight hospital stay. The overall safety and effectiveness has compared favorably with surgical repair. Although rare, complications have been described, including erosion, device embolization, or malfunction and arrhythmias. The overall long-term clinical outcomes have been excellent: good quality of life, functional class improvement, and ventricular remodeling have been the rule after the procedure. It is mandatory to recommend indefinite follow-up of patients undergoing this procedure for potential long-term complications.
Collapse
Affiliation(s)
- Alejandro Román Peirone
- Pediatric Cardiology Section, Hospital Privado de Córdoba, Naciones Unidas 346, Córdoba 5016, Argentina.
| | - Simone Fontes Pedra
- Echocardiography Laboratory for Congenital Heart Disease, Instituto Dante Pazzanese de Cardiología, Av Dr Dante Pazzanese 500 CEP 04012-180, Sao Paulo, Brazil
| | - Carlos Augusto Cardoso Pedra
- Catheterization Laboratory for Congenital Heart Disease, Instituto Dante Pazzanese de Cardiología, Avenida Doutor Dante Pazzanese 500 CEP 04012-180, Sao Paulo, Brazil; Catheterization Laboratory for Congenital Heart Disease, Hospital do Coração, Sao Paulo, Brazil
| |
Collapse
|