keyword
https://read.qxmd.com/read/38506056/modified-senning-procedure-in-a-patient-with-dextrocardia-with-left-atrial-isomerism-and-anomalous-systemic-venous-drainage-a-rare-case-report
#1
JOURNAL ARTICLE
Sayar Kumar Munshi, Caroline Jones, Ramana Dhannapuneni
The atrial switch procedure by Senning or Mustard technique primarily aims in correcting parallel systemic and pulmonary circulations at atrial level. This procedure may be used in late presenting D-transposition of great arteries with a deconditioned left ventricle, congenitally corrected transposition of great arteries and isolated ventricular inversion. We describe the case of a child with dextrocardia, left atrial isomerism with complex pulmonary and systemic venous drainage resulting in mixing at atrial level...
March 20, 2024: Cardiology in the Young
https://read.qxmd.com/read/38369208/it-s-a-long-way-to-the-top-congenital-venous-anomalies-and-left-isomerism-limiting-atrial-fibrillation-transcatheter-ablation
#2
REVIEW
Carlo De Innocentiis, Angela Buonpane, Antonio Totaro, Gennaro Restaino, Pasquale Astore, Martina Guarino, Valerio Langella, Sabina Gallina, Matteo Santamaria
BACKGROUND: . Atrial fibrillation is the most common sustained cardiac arrhythmia in adults and it is associated with a high burden of mortality and morbidity worldwide. Catheter ablation is increasingly used to improve symptoms and prognosis in selected patients. Lower limb venous access with subsequent transseptal approach to the left atrium is the standard procedure for atrial fibrillation catheter ablation. CASE PRESENTATION: . We report an unusual case of complex venous anomaly with a left-sided inferior vena cava with hemiazygos continuation to a persistent left superior vena cava draining in an enlarged coronary sinus in a patient with persistent atrial fibrillation scheduled for transcatheter ablation...
February 16, 2024: Current Problems in Cardiology
https://read.qxmd.com/read/38204641/does-leaving-native-antegrade-pulmonary-blood-flow-at-the-time-of-the-superior-cavopulmonary-connection-impact-long-term-outcomes-after-the-fontan
#3
JOURNAL ARTICLE
Hannah Davidson, Diana Zannino, Yves d'Udekem, Rachael Cordina, Yishay Orr, Igor E Konstantinov, Robert Weintraub, Gavin Wheaton, Jelena Saundankar, Gananjay Salve, Ajay Iyengar, Nelson Alphonso, Julian Ayer
OBJECTIVES: Antegrade pulmonary blood flow (APBF) may be left or eliminated at the time of the superior cavopulmonary connection (SCPC). Our aim was to assess the impact of leaving native APBF at the SCPC on long-term Fontan outcomes. METHODS: In the Australia and New Zealand Fontan Registry (1985-2021), 587 patients had pre-existing native APBF at the SCPC. At the SCPC, 302 patients had APBF eliminated (APBF- ) and 285 patients had APBF maintained (APBF+ ). The incidence of Fontan failure (composite end point of Fontan takedown, transplant, plastic bronchitis, protein losing enteropathy and death) and atrioventricular (AV) valve repair/replacement post SCPC was compared between the 2 groups...
December 2023: JTCVS open
https://read.qxmd.com/read/38154877/reciprocal-impulses-of-junctional-origin-causing-trigeminy
#4
JOURNAL ARTICLE
Praveen Murugesan, Saurabh Kumar Gupta
Reciprocal impulses of junctional origin were seen in a patient with left isomerism who had undergone Kawashima repair in infancy. Heterotaxy syndromes are associated with disturbances in sinus node function. Junctional rhythm is hence common in this group. Junctional rhythm can conduct both anterogradely, to the ventricles, and retrogradely, back to the atrium. When it conducts retrogradely, it is termed as atrial echo, which can further conduct back to the ventricle. Our patient had a junctional rhythm with atrial echo beats that conduct to the ventricle, along with an ectopic atrial focus that does not conduct to the ventricle...
December 28, 2023: BMJ Case Reports
https://read.qxmd.com/read/38103069/persistant-left-superior-vena-cava-with-and-without-right-superior-vena-cava-significance-of-prenatal-diagnosis
#5
JOURNAL ARTICLE
Ozge Kahramanoglu, Oya Demirci, Lutfiye Uygur, Nurdan Erol, Antonio Schiattarella, Agnese Maria Chiara Rapisarda
This study aims to define the associated anomalies with PLSVC, and to compare single PLSVC and bilateral superior vena cava in terms of accompanying anomalies and pregnancy outcomes. This was a retrospective study of the fetuses diagnosed with single and/or bilateral SVC at a tertiary fetal medicine center during 8 years. We detected 16 cases of single PLSVC and 84 cases of bilateral SVC. We found an association between the PLSVC and cardiac and extracardiac anomalies. Comparison between single PLSVC and BSVC cases revealed significant differences in the occurrence of heterotaxy and right isomerism...
February 2024: Pediatric Cardiology
https://read.qxmd.com/read/38043246/re-utilization-of-long-lived-99-tc-radio-isotope-via-photon-induced-nuclear-reactions
#6
JOURNAL ARTICLE
Shaima Akbar, M M Musthafa, C V Midhun, Antony Joseph, Swapna Lilly Cyriac, K C Jagadeesan
Technetium-99 is a radioactive waste produced primarily in nuclear reactors. It is also left as radioactive waste in hospitals, directly from 99m Tc isomeric state. To bring down the quantity of technetium-99 radioactive waste, the nuclear reactions using photon beam is explored. The integral cross section of the reaction 99 Tc(γ,γ')99m Tc has been determined using the photo-nuclear activation method. The experiment was done using bremsstrahlung photons having endpoint energies viz. 6, 9, 12, 16, and 20 MeV...
December 1, 2023: Applied Radiation and Isotopes
https://read.qxmd.com/read/37886816/macroscopic-helical-assembly-of-one-dimensional-coordination-polymers-helicity-inversion-triggered-by-solvent-isomerism
#7
JOURNAL ARTICLE
Jia-Ge Jia, Chen-Chen Zhao, Yi-Fan Wei, Zhi-Min Zhai, Song-Song Bao, Allan J Jacobson, Jing Ma, Li-Min Zheng
Assembling macroscopic helices with controllable chirality and understanding their formation mechanism are highly desirable but challenging tasks for artificial systems, especially coordination polymers. Here, we utilize solvents as an effective tool to induce the formation of macroscopic helices of chiral coordination polymers (CPs) and manipulate their helical sense. We chose the Ni/ R -, S -BrpempH2 system with a one-dimensional tubular structure, where R -, S -BrpempH2 stands for R -, S -(1-(4-bromophenyl)ethylaminomethylphosphonic acid)...
October 27, 2023: Journal of the American Chemical Society
https://read.qxmd.com/read/37880144/electronic-structure-analysis-of-phthalocyanine-complexes-using-magnetic-circular-dichroism-and-magnetic-circularly-polarized-luminescence-spectroscopy
#8
JOURNAL ARTICLE
Satoko Suzuki, Anas Santria, Taiji Oyama, Ken-Ichi Akao, Naoto Ishikawa
In the study of phthalocyanine complexes using magnetic circular dichroism (MCD) spectroscopy, the electronic structure of excited states is generally discussed based on the rigid-shift approximation, in which the band profiles for left-handed circularly polarized (lcp) and right-handed circularly polarized (rcp) light are assumed to be the same. This assumption may not necessarily be valid for cases where there are multiple initial states having different geometries. Magnetic circularly polarized luminescence (MCPL) from phthalocyanine complexes can be regarded as an example of such cases, since the two degenerate emission states are split in a magnetic field and can undergo a structural deformation...
October 25, 2023: Chirality
https://read.qxmd.com/read/37877253/anomalous-hepatic-drainage-and-platypnea-orthodeoxia-in-cyanotic-children
#9
JOURNAL ARTICLE
Saïd Bichali, Jérôme Soquet, Ivan Bouzguenda, Héloïse Lérisson, Alexandre Ung, François Pontana, François Godart, Kévin Le Duc, Alexandra Nuytten, Ali Houeijeh
The aetiology of cyanosis could be unclear in children, even for specialised paediatricians. Two cases were reported: first, a 6-year-old child with features of left isomerism and Fallot was fortuitously diagnosed with anomalous hepatic venous drainage before complete repair. Second, a newborn with an antenatal diagnosis of ductus venosus agenesis had an isolated intermittent right-to-left atrial shunt when upright, with favourable outcome, in contrast to the association with significant heart malformations including inferior caval vein interruption...
October 25, 2023: Cardiology in the Young
https://read.qxmd.com/read/37578040/intracardiac-total-anomalous-pulmonary-venous-return-or-septum-primum-malposition-complete-repair-in-left-atrial-isomerism
#10
Antonio Pio Montella, Caterina Golini Petrarcone, Mario Giordano, Claudia D'Andrea, Guido Oppido
Total anomalous pulmonary venous return due to septum primum malposition is a poorly understood condition despite being very common in left atrial isomerism or polysplenia syndrome. Due to the leftward displacement of the septum primum, either the two right pulmonary veins or all four pulmonary veins can drain abnormally into the right atrium, despite their correct position. In other words, the four pulmonary veins (or the two right pulmonary veins), looking from outside the heart, return at the back of the atrium in the normal position...
August 14, 2023: Multimedia Manual of Cardiothoracic Surgery: MMCTS
https://read.qxmd.com/read/37485264/characterization-of-ultrasound-and-postnatal-pathology-in-fetuses-with-heterotaxy-syndrome
#11
JOURNAL ARTICLE
Qiumei Wu, Shan Guo, Biying Huang, Wen Ling, Longzhuang Peng, Hong Ma, Fa Chen, Guorong Lyu, Min Liu, Xiuqing Qiu, Zongjie Weng
BACKGROUND: To explore the diagnostic clues and abnormality spectrum of heterotaxy syndrome by prenatal ultrasonography and postnatal verification. METHODS: The prenatal ultrasonic data of 88 heterotaxy syndrome fetuses were analyzed retrospectively as left isomerism (LI) and right isomerism (RI). Prenatal ultrasound compared with the anatomical casting of the fetal body after labor induction, and the confirmatory postnatal diagnosis after delivery. RESULTS: Fetal LI showed typical malformations of gastric vesicles on different sides from the heart, absence of hepatic segment of the inferior vena cava (IVC), abdominal aorta (AO) parallel with the azygos vein (AV), bilateral left bronchus, bilateral left atrial appendages, and polysplenia; intracardiac malformations of AV septal defects (AVSD), single atrium (SA), left ventricular outflow tract obstruction (LVOTO), and double-outlet right ventricle (DORV); and cardiac conduction abnormalities of sinus bradycardia and AV blockage...
2023: Frontiers in Cardiovascular Medicine
https://read.qxmd.com/read/37380446/difficulty-in-the-diagnosis-of-biliary-atresia-splenic-malformation-syndrome-in-utero
#12
JOURNAL ARTICLE
Kunio So, Takaaki Shinagawa, Toshiyuki Yoshizato, Suguru Fukahori, Kimio Asagiri, Yasuki Maeno, Shintaro Hayashida, Kimio Ushijima
The fetus of a 30-year-old pregnant Japanese woman was diagnosed with absence of inferior vena cava (IVC) and azygos continuation of interrupted IVC without cardiac anomalies at 34 weeks of gestation, and a healthy male neonate weighing 2,910 g was delivered at 37 weeks of gestation. On day 42 after birth, direct bilirubin predominant hyperbilirubinemia and high serum gamma-GTP levels were detected. Computed tomography revealed the presence of a lobulated and accessory spleen, and laparotomy demonstrated type III biliary atresia (BA), confirming the final diagnosis of BA splenic malformation (BASM) syndrome...
June 29, 2023: Kurume Medical Journal
https://read.qxmd.com/read/37334338/heterotaxy-pattern-associated-with-sinus-node-dysfunction-in-an-adult-a-case-report
#13
Naman Shah, Sankalp Acharya, Apoorva Tripathi, Himanshi Bisht, Maitri Shah, Aayushi Pareek, Asmita Gera, Abhigan Babu Shrestha, Vikash Jaiswal
KEY CLINICAL MESSAGE: A 26-year-old male patient admitted to the hospital ward with experience of repetitive syncopes for a year. The patient was diagnosed with sick sinus syndrome. The aim of this clinical report is to highlight the variability of anatomical findings associated with polysplenia pattern. ABSTRACT: This case report presents a 26-year-old male patient who presented to the medical ward with a complaint of repeating blackouts for a year. The patient was then diagnosed with sick sinus syndrome, and further investigations revealed left isomerism, polysplenia, and no congenital heart defects...
June 2023: Clinical Case Reports
https://read.qxmd.com/read/37126415/bilateral-inferior-venae-cava-combined-with-the-persistent-left-superior-vena-cava-and-hemiazygos-continuation-of-left-inferior-vena-cava-with-drainage-into-right-atrium-a-case-report
#14
Yongmei Jia, Junxia Gao
The persistent left superior vena cava (PLSVC) is a common venous abnormality. However, malformation of the bilateral inferior venae cava (IVC) is extremely rare, with an incidence rate of .3%. IVC malformation is associated most frequently with heart defects and isomerism and often has a poor prognosis. We presented a case of vascular malformations in the fetus of bilateral caval veins with the interruption of the left-sided venous return with hemiazygos continuation in presence of a right-sided inferior caval vein...
May 1, 2023: Echocardiography
https://read.qxmd.com/read/37051766/dna-induced-circularly-polarized-luminescence-of-helicene-racemates
#15
JOURNAL ARTICLE
Fuwei Gan, Peng Yang, Juncong Liang, Chengshuo Shen, Jeanne Crassous, Huibin Qiu
Enantiopure helicenes have been extensively investigated due to their outstanding chiroptical properties, while helicene racemates are considered as chiroptically silent. Here, we describe a facile method to produce circularly polarized luminescence (CPL) from helicene racemates via supramolecular association with DNA in aqueous solution. Racemic cationic helicene derivatives are immobilized in the grooves of commercially available double-stranded right-handed DNA, and the discrimination of left- and right-handed helicenes by chiral DNA is monitored by single molecule force spectroscopy...
April 13, 2023: Chirality
https://read.qxmd.com/read/37005149/a-rare-combination-left-isomerism-and-calcific-fibrous-tumor-of-the-pleura
#16
Hüseyin Alper Kızıloğlu
No abstract text is available yet for this article.
March 21, 2023: Archivos de Bronconeumología
https://read.qxmd.com/read/36921325/identifying-anomalies-of-systemic-venous-drainage-systemic-venous-anomalies-atrial-morphology
#17
REVIEW
Madan M Maddali, Hamood N Al Kindi, Pranav Subbaraya Kandachar, Abdulla Al Farqani, Khalid S Al Alawi, Faiza Al Kindi, Salim Nasser Al-Maskari, Diane E Spicer, Robert Henry Anderson
So as to produce totally anomalous systemic venous connection, all of the systemic venous tributaries, along with the coronary sinus, should be connected with the morphologically left atrium. Previous descriptions of this rare constellation of anomalous connections of the systemic venous tributaries of the heart have been compromised by the inclusion of individuals having isomeric atrial appendages. In these settings, most frequently, the totally, or almost totally, anomalous systemic venous connections are associated with a sinus venosus defect...
July 2023: World Journal for Pediatric & Congenital Heart Surgery
https://read.qxmd.com/read/36895889/anatomy-embryology-and-imaging-of-situs-ambiguous-with-polysplenia-and-left-ivc
#18
Rosa Montero-Macías, David Krief, Vincent Villefranque, Mohamed Kilani, Juan Manuel Castillo-Tuñon
The situs ambiguous or heterotaxy syndrome is a type of syndrome that involves multiple visceral abnormalities, vascular ones and associated with left isomerism. Malformation of gastroenterologic system includes polysplenia (segmented spleen or multiple splenules), agenesis (partial or complete) of the dorsal pancreas and anomalous of the inferior vena cava implantation. Here, we describe and show the anatomy of a patient with left side inferior vena cava, situs ambiguous (complete common mesentery), polysplenia, and short pancreas...
May 2023: Radiology Case Reports
https://read.qxmd.com/read/36892756/the-origin-of-left-handed-poly-d-g-c
#19
JOURNAL ARTICLE
Thomas M Jovin
The discovery of a reversible transition in the helical sense of a double-helical DNA was initiated by the first synthesis in 1967 of the alternating sequence poly[d(G-C)]. In 1968, exposure to high salt concentration led to a cooperative isomerization of the double helix manifested by an inversion in the CD spectrum in the 240-310 nm range and in an altered absorption spectrum. The tentative interpretation, reported in 1970 and then in detailed form in a 1972 publication by Pohl and Jovin, was that the conventional right-handed B-DNA structure (R) of poly[d(G-C)] transforms at high salt concentration into a novel, alternative left-handed (L) conformation...
2023: Methods in Molecular Biology
https://read.qxmd.com/read/36832240/left-bronchial-isomerism-with-right-sided-tracheal-bronchus-a-rare-case-report
#20
JOURNAL ARTICLE
Kyungsoo Bae, Kyung Nyeo Jeon
The tracheal bronchus is a congenital bronchial branching anomaly defined as an aberrant bronchus arising in either the trachea or a main bronchus. Left bronchial isomerism is characterized by two bilobed lungs, bilateral long main bronchi, and both pulmonary arteries passing superiorly to their respective upper lobe bronchi. Left bronchial isomerism with a right-sided tracheal bronchus is a very rare combination of tracheobronchial anomalies. It has not been previously reported. We present multi-detector CT findings of a left bronchial isomerism with a right-sided tracheal bronchus of a 74 year old man...
February 16, 2023: Diagnostics
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