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  • Open Access

    CASE REPORT

    Stubborn Hypoxia in Neonates with D-Transposition of the Great Arteries after Arterial Switch Operation: Central Sleep Apnea as the Cause and Potential Indicator of Brain Immaturity

    Camden L. Hebson1,*, Kyle Bliton2, Amr Y. Hammouda1, Kaitlyn Barr3, W. Hampton Gray4, Mohini Gunnett2, Waldemar F. Carlo1

    Congenital Heart Disease, Vol.19, No.2, pp. 185-195, 2024, DOI:10.32604/chd.2024.048871

    Abstract D-transposition of the great arteries (d-TGA) is surgically repaired with the arterial switch operation (ASO) with excellent results, however short and long-term morbidities still develop including neurocognitive delay. Clinically significant central sleep apnea is uncommon in non-premature infants, but when present indicates immature autonomic control of respiration likely due to a neurologic disorder. We report the unanticipated finding of central sleep apnea in four-term neonates with d-TGA after uncomplicated ASO, with the short-term complication of delayed hospital discharge and long-term concerns regarding this early marker of brain immaturity and its hindrance to normal development. Within More >

  • Open Access

    CASE REPORT

    A 63-Year-Old Male with D-Transposition of the Great Arteries Who Had an Early Form of the Arterial Switch Operation

    Michael A. Rebolledo1,*, Jane S. Yao2, Jason N. Johnson1, Umar S. Boston3, Benjamin R. Waller III1

    Congenital Heart Disease, Vol.19, No.1, pp. 65-68, 2024, DOI:10.32604/chd.2024.046638

    Abstract We describe a 63-year-old male who appears to have undergone an early form of the arterial switch operation for D-transposition of the great arteries performed in the mid-1960s. We review the clinical and imaging data that support our conclusion. He had a diagnostic cardiac catheterization which demonstrated severe pulmonary hypertension responsive to epoprostenol and oxygen. Our case may represent one example of the experimental surgical work done prior to Dr. Adibe Jatene’s description of the first successful arterial switch performed in 1975. More >

  • Open Access

    ARTICLE

    A Lightweight Road Scene Semantic Segmentation Algorithm

    Jiansheng Peng1,2,*, Qing Yang1, Yaru Hou1

    CMC-Computers, Materials & Continua, Vol.77, No.2, pp. 1929-1948, 2023, DOI:10.32604/cmc.2023.043524

    Abstract In recent years, with the continuous deepening of smart city construction, there have been significant changes and improvements in the field of intelligent transportation. The semantic segmentation of road scenes has important practical significance in the fields of automatic driving, transportation planning, and intelligent transportation systems. However, the current mainstream lightweight semantic segmentation models in road scene segmentation face problems such as poor segmentation performance of small targets and insufficient refinement of segmentation edges. Therefore, this article proposes a lightweight semantic segmentation model based on the LiteSeg model improvement to address these issues. The model… More >

  • Open Access

    ARTICLE

    Anatomic Correlates of Mitral Systolic Anterior Motion in Transposition of the Great Arteries Following Atrial Switch Operation

    Norman Aiad1,2,3,7, Mark V. Sherrid1,7, Adam J. Small1, Youssef Elnabawi1,7, Jodi Feinberg1, Leon Axel1,4, Ralph Mosca5, T. K. Susheel Kumar5, Michael Argilla6, Dan G. Halpern1,7,*

    Congenital Heart Disease, Vol.18, No.3, pp. 267-277, 2023, DOI:10.32604/chd.2023.025853

    Abstract Introduction: We sought to investigate whether the development of sub-pulmonic systolic anterior motion (SAM) may be inherent to the anatomy of the the mitral valve (MV) or affected by external factors, such as a dilated right ventricle or chest abnormalities in d-looped transposition of the great arteries post atrial switch operation (d-TGA/AtS). Methods: Analysis was performed of clinical and cardiac imaging studies acquired on 19 adult patients with d-TGA/AtS (age 42 ± 6 years old, 56% male) between 2015–2019. Echocardiography data included mitral apparatus anatomy, and CT/MRI data included biventricular dimensions, function, and Haller index… More >

  • Open Access

    ARTICLE

    Coronary Artery Anomalies in D-Transposition of the Great Artery Following Arterial Switch Operation

    Thita Pacharapakornpong, Jarupim Soongswang*, Chodchanok Vijarnsorn, Paweena Chungsomprasong, Kritvikrom Durongpisitkul, Prakul Chanthong, Supaluck Kanjanauthai

    Congenital Heart Disease, Vol.17, No.3, pp. 297-311, 2022, DOI:10.32604/chd.2022.019279

    Abstract Background: The survival rate of patients following arterial switch operation (ASO) exceeds 95%, but coronary artery anomalies (CAA) contribute to a 2% incidence of sudden cardiac arrest later in life. Therefore, we aimed to assess abnormal findings of coronary arteries in post-ASO patients. Methods: Coronary computed tomography angiography (CCTA) is performed on post-ASO patients who meet institutional criteria. Intraoperative findings of coronary artery patterns were retrospectively reviewed and categorized using the Leiden classification system. Coronary artery anomalies were detected by CCTA and associations with coronary artery compromise were explored. Results: Forty-three patients who had CCTA with a… More >

  • Open Access

    CASE REPORT

    Transcatheter Device Closure of a Perimembranous Ventricular Septal Defect in Congenitally Corrected Transposition of the Great Arteries

    Catherine E. Tomasulo1,*, Lindsay S. Rogers1, Lauren Andrade1,2, Michael L. O’Byrne1,3,4

    Congenital Heart Disease, Vol.17, No.2, pp. 193-199, 2022, DOI:10.32604/chd.2022.017721

    Abstract The majority of patients with congenitally corrected transposition of the great arteries, also known as transposition of the great arteries {S,L,L} have ventricular septal defects (VSD), most commonly perimembranous VSD (pmVSD). Transcatheter device closure of pmVSD in these patients has not been widely described. We present a case of device closure of pmVSD in L-TGA with an Amplatzer Duct Occluder II (ADOII) device using a deployment starting in the subpulmonary left ventricle. The case demonstrates some of the technical advantages of the ADOII device for VSD closure, specifically its low profile, symmetric shape, and soft More >

  • Open Access

    CASE REPORT

    A Rare Case of Late LAD Reimplantation after Arterial Switch Operation

    Yannick Kabulo Kolela1,2, Maureen Klepper1,2, Geoffroy de Beco1,2, Thierry Sluysmans3, Alain Poncelet1,2,*

    Congenital Heart Disease, Vol.17, No.1, pp. 99-106, 2022, DOI:10.32604/CHD.2022.017635

    Abstract Arterial switch operation (ASO) is a complex neonatal operation in which transfer of the coronary arteries origins is the key to success. Coronary events after a successful ASO are not uncommon. We describe a rare case of a child who underwent an ASO in the neonatal period with one coronary (LAD) described as atretic left in place. At age seven, he developed myocardial ischemia due to retrograde flow with a steal phenomenon from the LAD into the pulmonary artery. The patient underwent a late LAD reimplantation. This case underscores that even very small ostia should More >

  • Open Access

    ARTICLE

    A survey on the Metaheuristics for Cryptanalysis of Substitution and Transposition Ciphers

    Arkan Kh Shakr Sabonchi*, Bahriye Akay

    Computer Systems Science and Engineering, Vol.39, No.1, pp. 87-106, 2021, DOI:10.32604/csse.2021.05365

    Abstract This paper presents state-of-art cryptanalysis studies on attacks of the substitution and transposition ciphers using various metaheuristic algorithms. Traditional cryptanalysis methods employ an exhaustive search, which is computationally expensive. Therefore, metaheuristics have attracted the interest of researchers in the cryptanalysis field. Metaheuristic algorithms are known for improving the search for the optimum solution and include Genetic Algorithm, Simulated Annealing, Tabu Search, Particle Swarm Optimization, Differential Evolution, Ant Colony, the Artificial Bee Colony, Cuckoo Search, and Firefly algorithms. The most important part of these various applications is deciding the fitness function to guide the search. This More >

  • Open Access

    CASE REPORT

    Six-Year Outcome after Valve Replacement and Resynchronization Therapy in TGA Patient

    Jadranka Separovic Hanzevacki1, Marija Brestovac1,*, Vlatka Reskovic Luksic1, Blanka Glavas Konja1, Martina Lovric Bencic1, Josko Bulum1, Darko Anic2

    Congenital Heart Disease, Vol.16, No.5, pp. 469-475, 2021, DOI:10.32604/CHD.2021.015237

    Abstract Patients with complete transposition of the great arteries (TGA) treated by the Senning procedure have a higher risk of developing heart failure due to: a) additional work load of the systemic (morphologic right) ventricle (sRV), b) arrhythmias, mainly caused by surgical implications at the atria as well as c) worsening of systemic tricuspid regurgitation. We present a unique case of a female patient who developed all these complications, who was successfully treated and was able to carry out a twin pregnancy. This breakthrough approach was based on: 1. detecting reversibility potential of myocardial systolic dysfunction… More >

  • Open Access

    CASE REPORT

    Isolation of the Left Subclavian Artery in D-Transposition of the Great Arteries with Right Aortic Arch

    Kotaro Hine*, Kohei Ogata, Keiko Saitou, Norio Mizukaki, Hiroko Arai, Hitoshi Yoda

    Congenital Heart Disease, Vol.16, No.4, pp. 369-371, 2021, DOI:10.32604/CHD.2021.014516

    Abstract Abnormal branching of the aorta associated with the right aortic arch (RAA) has been reported as isolation of left subclavian artery (ILSA), isolation of left common carotid artery, isolation of brachiocephalic artery. ILSA is a rare aortic branch anomaly that originates in the left subclavian artery from the pulmonary artery via ductus arteriosus. Several reports have described ILSA associated with 22q11.2 deletion syndrome and tetralogy of Fallot. Here, we present a very unusual case of RAA with ILSA associated with D-transposition of the great arteries and inferior vena cava interrupted with azygos continuation. More >

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