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Arterial switch

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https://www.readbyqxmd.com/read/29333467/a-simple-non-invasive-i-123-imp-autoradiography-method-developed-by-modifying-the-simple-non-invasive-i-123-imp-microsphere-method
#1
Asato Ofuji, Rieko Nagaoka, Kosuke Yamashita, Akihiro Takaki, Shigeki Ito
Objectives: We developed a simple non-invasive I-123-N-isopropyl-p-iodoamphetamine (123I-IMP) quantification method by analyzing chest RI-angiography and single photon emission computed tomography (SPECT) images based on the microsphere model (SIMS method). Theoretically, the SIMS method could be changed to the simple non-invasive ARG (SIARG) method by modifying the integrated washout ratio (WR) to one-point WR. If the regional cerebral blood flow (rCBF) values derived from the SIARG and ARG methods correlate well, the facilities employing the ARG method can easily switch to the SIARG method...
2018: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/29326110/contemporary-management-and-outcomes-in-congenitally-corrected-transposition-of-the-great-arteries
#2
REVIEW
Shelby Kutty, David A Danford, Gerhard-Paul Diller, Oktay Tutarel
Congenitally corrected transposition of the great arteries (ccTGA) can occur in isolation, or in combination with other structural cardiac anomalies, most commonly ventricular septal defect, pulmonary stenosis and tricuspid valve disease. Clinical recognition can be challenging, so echocardiography is often the means by which definitive diagnosis is made. The tricuspid valve and right ventricle are on the systemic arterial side of the ccTGA circulation, and are therefore subject to progressive functional deterioration...
January 11, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29321443/a-new-arena-in-cardiac-surgery-pediatric-coronary-artery-bypass-surgery
#3
Soichiro Kitamura
Prior to the 1970s, pediatric coronary artery bypass surgery (PCABS) was seldomly performed due to the lack of compelling surgical indications. The advent of coronary sequelae secondary to Kawasaki disease (KD) and the occurrence of coronary artery complications due to newly developed procedures, such as the arterial switch operation and early repair for intrinsic congenital coronary malformations, necessitated the development of PCABS. Because children grow rapidly and their life expectancy is very long, with increasing exercise capability requirements, the strategy for PCABS should differ from that for bypass surgery in adults...
2018: Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
https://www.readbyqxmd.com/read/29315865/coronary-artery-bypass-grafting-in-children
#4
Ahmet Arnaz, Tayyar Sarioglu, Yusuf Yalcinbas, Ersin Erek, Riza Turkoz, Ayla Oktay, Arda Saygili, Dilek Altun, Ayse Sarioglu
BACKGROUND: We present our clinical experience with coronary artery bypass grafting (CABG) in children. METHODS: Ten children who underwent CABG between July 1995 and August 2017 were retrospectively analyzed. Data including congenital cardiac malformations, previous surgical procedures, age and sex, type of coronary complications, ischemic events preceding surgery, and ventricular function before and after CABG were recorded. RESULTS: The study population consisted of five males and five females with a median age of 2...
January 7, 2018: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/29310554/primary-arterial-switch-operation-for-late-referral-of-transposition-of-the-great-arteries-with-intact-ventricular-septum-in-the-current-era-do-we-still-need-a-rapid-two-stage-operation
#5
Noritaka Ota, Sivakumar Sivalingam, Kiew Kong Pau, Chee Chin Hew, Jeswant Dillon, Haifa Abdul Latiff, Hasri Samion, Mohd Azhari Yakub
OBJECTIVE: We introduced primary arterial switch operation for the patient with transposition of great arteries and intact ventricular septum (TGA-IVS) who had more than 3.5 mm of posterior left ventricle (LV) wall thickness. METHODS: Between January 2013 and June 2015, a total of 116 patients underwent arterial switch operation. Of the 116 patients, 26 with TGA-IVS underwent primary arterial switch operation at more than 30 days of age. RESULTS: The age and body weight (mean ± SD) at the operation were 120...
January 2018: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/29302123/bloodless-repair-for-a-3-6-kilogram-transposition-of-the-great-arteries-with-jehovah-s-witness-faith
#6
Jeffery L Burnside, Todd M Ratliff, Ashley B Hodge, Daniel Gomez, Mark Galantowicz, Aymen Naguib
Achieving pediatric cardiac surgery using cardiopulmonary bypass (CPB) without allogeneic blood transfusion is challenging. There are many clinical and economic factors that point to the importance of avoiding blood transfusions. In some instances, honoring patients or parents beliefs may be the reason for avoiding blood transfusions. For example, patients or parents of the Jehovah's Witness faith refuse blood transfusion based on their religious beliefs. Over the last decade, our institution has seen a steady increase in our pediatric Jehovah's Witness patient population...
December 2017: Journal of Extra-corporeal Technology
https://www.readbyqxmd.com/read/29282032/riociguat-in-patients-with-chronic-thromboembolic-pulmonary-hypertension-results-from-an-early-access-study
#7
Vallerie V McLaughlin, Pavel Jansa, Jens E Nielsen-Kudsk, Michael Halank, Gérald Simonneau, Ekkehard Grünig, Silvia Ulrich, Stephan Rosenkranz, Miguel A Gómez Sánchez, Tomás Pulido, Joanna Pepke-Zaba, Joan Albert Barberá, Marius M Hoeper, Jean-Luc Vachiéry, Irene Lang, Francine Carvalho, Christian Meier, Katharina Mueller, Sylvia Nikkho, Andrea M D'Armini
BACKGROUND: Following positive results from the Phase III CHEST-1 study in patients with inoperable or persistent/recurrent chronic thromboembolic pulmonary hypertension (CTEPH), the Phase IIIb CTEPH early access study (EAS) was designed to assess the safety and tolerability of riociguat in real-world clinical practice, as well as to provide patients with early access to riociguat before launch. Riociguat is approved for the treatment of inoperable and persistent/recurrent CTEPH. METHODS: We performed an open-label, uncontrolled, single-arm, early access study in which 300 adult patients with inoperable or persistent/recurrent CTEPH received riociguat adjusted from 1 mg three times daily (tid) to a maximum of 2...
December 28, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29279317/ak098656-a-novel-vascular-smooth-muscle-cell-dominant-long-noncoding-rna-promotes-hypertension
#8
Ling Jin, Xianjuan Lin, Lei Yang, Xiaofang Fan, Wenjie Wang, Shuangyue Li, Jing Li, Xiaoyan Liu, Minghui Bao, Xiao Cui, Jichun Yang, Qinghua Cui, Bin Geng, Jun Cai
Recent studies reported some long noncoding RNAs (lncRNAs)-mediated vascular smooth muscle cells (VSMCs) phenotypic switch, which was a common pathophysiological process of vascular diseases. However, whether human-specific expressed lncRNAs would modulate VSMCs phenotype and participate into the pathogenesis of essential hypertension remains unclear. By comparing the circulating lncRNAs expression profiles between hypertensive patients and healthy controls, we identified a lncRNA-AK098656, strongly upregulated in the plasma of hypertensive patients, and predominantly expressed in VSMCs...
December 26, 2017: Hypertension
https://www.readbyqxmd.com/read/29275827/simulation-and-deliberate-practice-in-a-porcine-model-for-congenital-heart-surgery-training
#9
Constantine D Mavroudis, Constantine Mavroudis, Jeffrey P Jacobs, William M DeCampli, James S Tweddell
BACKGROUND: Surgeons in training for congenital cardiac surgery face considerable challenges owing to procedure complexity, closely scrutinized outcomes, and a steep learning curve. Simulation methods have been initiated in other surgical specialties, but have yet to be established for congenital cardiac surgery trainees. The purpose of this study was to assess high-fidelity simulation as a method to train and improve skills of resident trainees learning critical components of index congenital cardiac surgical procedures...
December 21, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29275134/comparative-safety-of-drugs-targeting-the-nitric-oxide-pathway-in-pulmonary-hypertension-a-mixed-approach-combining-a-meta-analysis-of-clinical-trials-and-a-disproportionality-analysis-from-the-who-pharmacovigilance-database
#10
C Khouri, M Lepelley, M Roustit, F Montastruc, M Humbert, J L Cracowski
BACKGROUND: Recent guidelines recommend riociguat, a soluble guanylate cyclase (sGC) stimulator, as well as the type 5 phosphodiesterase inhibitor (PDE5i) tadalafil or sildenafil as treatments for pulmonary arterial hypertension. We compared the safety profiles of sildenafil, tadalafil and riociguat in pulmonary hypertension. METHODS: We combined two approaches: First, we performed a meta-analysis of safety data extracted from randomized controlled trials. Secondly, we conducted a disproportionality analysis of data from VigiBase, the WHO global database of individual case safety reports, to compare the safety profiles with real life data...
December 21, 2017: Chest
https://www.readbyqxmd.com/read/29274314/an-analysis-of-left-ventricular-re-training-in-patients-with-dextro-and-levo-transposition-of-the-great-arteries
#11
Richard D Mainwaring, William L Patrick, Ali N Ibrahimiye, Naruhito Watanabe, George K Lui, Frank L Hanley
BACKGROUND: Patients with D-TGA who underwent a previous atrial switch and for some patients with L-TGA (ie no ventricular septal defect or outflow tract obstruction), the left ventricle (LV) may require re-training prior to late arterial switch. The purpose of this study was to analyse the results of LV re-training for these two entities. METHODS: This was a retrospective review of 51 patients enrolled in an LV re-training program. There were 25 patients with D-TGA and 26 with L-TGA...
December 20, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29273856/treatment-patterns-and-low-density-lipoprotein-cholesterol-ldl-c-goal-attainment-among-patients-receiving-high-or-moderate-intensity-statins
#12
Kathleen M Fox, Ming-Hui Tai, Karel Kostev, Maximilian Hatz, Yi Qian, Ulrich Laufs
BACKGROUND: European clinical guidelines recommend a low-density lipoprotein cholesterol (LDL-C) goal of < 70 mg/dL. Statin use varies and past studies suggest low rates of real-world goal attainment. This study describes LDL-C goal attainment among atherosclerotic CV disease (ASCVD) patients with various utilization patterns of moderate- or high-intensity statins in routine care. METHODS: This retrospective cohort study used electronic medical records data from the QuintilesIMS® Disease Analyzer (> 2 million individuals annually) to identify ASCVD (coronary atherosclerosis, stable/unstable angina, myocardial infarction, ischemic stroke, transient ischemic attack, aneurysm, peripheral artery disease) patients on moderate-/high-intensity statin in Germany...
December 22, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29250678/mass-effect-a-plethora-of-symptoms-caused-by-an-otherwise-benign-transitional-pituitary-meningioma-case-report
#13
Elisabeta Bădilă, Alexandra Emma Weiss, Daniela Bartoş, Elena Lăcrămioara Dumitrache, Ligia Gabriela Tătăranu, Gheorghe Vasile Ciubotaru, Tiberiu Paul Neagu, Valentin Enache, Valeriu Bogdan Popa, Cristina Japie
Meningiomas are among the most commonly encountered tumors of the central nervous system, being more frequent in females. We present the case of a dyslipidemic male patient, previously diagnosed with coronary artery disease for which he previously underwent percutaneous coronary intervention with the placement of two bare metal stents on the left anterior descending artery. He was presented to the emergency department for atypical angina and a seven-day history of dizziness when switching from clino- to orthostatism, reduced visual acuity, diplopia and vomiting...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/29250225/atrial-fibrillation-in-patients-with-congenital-heart-disease
#14
REVIEW
Tabitha G Moe, Victor A Abrich, Edward K Rhee
Advances in surgical techniques have led to the survival of most patients with congenital heart disease (CHD) up to their adulthood. During their lifetime, many of them develop atrial tachyarrhythmias due to atrial dilatation and scarring from surgical procedures. More complex defects and palliative repairs are linked to a higher incidence and earlier occurrence of arrhythmias. Atrial fibrillation (AF) is common in patients who have atrial septal defects repaired after age 55 and in patients with tetralogy of Fallot repaired after age 45...
June 2017: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/29248598/the-interaction-of-igf-1-igf-1r-and-hydrogen-sulfide-on-the-proliferation-of-mouse-primary-vascular-smooth-muscle-cells
#15
Tian Shuang, Ming Fu, Guangdong Yang, Lingyun Wu, Rui Wang
Hydrogen sulfide (H2S) is mostly produced by cystathionine-gamma-lyase (CSE) in vascular system and it inhibits the proliferation of vascular smooth muscle cells (SMCs). Insulin-like growth factor-1 (IGF-1), via its receptor (IGF-1R), exerts multiple physiological and pathophysiological effects on the vasculature, including stimulating SMC proliferation and migration, and inhibiting SMC apoptosis. Since H2S and IGF-1/IGF-1R have opposite effects on SMC proliferation, it becomes imperative to better understand the interaction of these two signaling mechanisms on SMC proliferation...
December 14, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29246895/mirna-22-is-a-novel-mediator-of-vascular-smooth-muscle-cell-phenotypic-modulation-and-neointima-formation
#16
Feng Yang, Qishan Chen, Shiping He, Mei Yang, Eithne Margaret Maguire, Weiwei An, Tayyab Adeel Afzal, Le Anh Luong, Li Zhang, Qingzhong Xiao
Background -MicroRNA-22 (miR-22) has recently been reported to play a regulatory role during vascular smooth muscle cell (VSMC) differentiation from stem cells, but little is known about its target genes and related pathways in mature VSMC phenotypic modulation or its clinical implication in neointima formation following vascular injury. Methods -We applied wire-injury mouse model as well as local delivery of AgomiR-22 or miR-22 inhibitor to explore the therapeutic potential of miR-22 in vascular diseases. Furthermore, normal and diseased human femoral arteries were harvested and various in vivo, ex vivo, and in vitro models of VSMC phenotype switching were conducted to examine miR-22 expression during VSMC phenotype switching...
December 15, 2017: Circulation
https://www.readbyqxmd.com/read/29233198/clinical-efficacy-and-safety-of-switch-from-bosentan-to-macitentan-in-children-and-young-adults-with-pulmonary-arterial-hypertension
#17
Ebru Aypar, Dursun Alehan, Tevfik Karagöz, Hayrettin Hakan Aykan, İlker Ertugrul
BACKGROUND: Macitentan is an orally active, potent, dual endothelin receptor antagonist and is the only registered treatment for pulmonary arterial hypertension that significantly reduced morbidity and mortality in a long-term event-driven study. Aim Few studies compared the clinical efficacy and safety of switch from bosentan to macitentan only in adult patients with pulmonary arterial hypertension. We aimed to evaluate the clinical efficacy and safety of switch from bosentan to macitentan in children and young adults...
December 13, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/29229555/reduced-cerebrovascular-reactivity-and-increased-resting-cerebral-perfusion-in-rats-exposed-to-a-cafeteria-diet
#18
Mariana Gomez-Smith, Rafal Janik, Evelyn M Lake, Lynsie A M Thomason, Conner Adams, Matthew S Jeffers, Bojana Stefanovic, Dale Corbett
To better understand the effects of a diet high in fat, sugar, and sodium on cerebrovascular function, Sprague Dawley rats were chronically exposed to a Cafeteria diet. Resting cerebral perfusion and cerebrovascular reactivity were quantified using continuous arterial spin labeling (CASL) magnetic resonance imaging (MRI). In addition, structural changes to the cerebrovasculature and susceptibility to ischemic lesion were examined. Compared to control animals fed standard chow (SD), Cafeteria diet (CAF) rats exhibited increased resting brain perfusion in the hippocampus and reduced cerebrovascular reactivity in response to 10% inspired CO2 challenges in both the hippocampus and the neocortex...
December 8, 2017: Neuroscience
https://www.readbyqxmd.com/read/29224925/incidence-and-clinical-characteristics-of-sudden-cardiac-death-in-adult-congenital-heart-disease
#19
Benjamin Moore, Christopher Yu, Irina Kotchetkova, Rachael Cordina, David S Celermajer
BACKGROUND: The life expectancy of adults with congenital heart disease (CHD) has significantly improved in recent decades, with non-cardiovascular causes of death now competing with traditional cardiovascular causes. The risk of sudden cardiac death (SCD), a devastating event, still remains elevated above that of the general population. METHODS: We reviewed 2935 patients in our adult CHD database (age≥16years, seen at least once in our centre) and documented all cases of SCD between 2000-2015...
December 5, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29212831/impaired-pulmonary-arterial-vasoconstriction-and-nitric-oxide-mediated-relaxation-underlie-severe-pulmonary-hypertension-in-sugen-hypoxia-rat-model
#20
Helen Christou, Hannes Hudalla, Zoe Michael, Evgenia Filatava, Jun Li, Minglin Zhu, Jose Possomato-Vieira, Carlos Dias-Junior, Stella Kourembanas, Raouf A Khalil
Pulmonary vasoreactivity could determine the responsiveness to vasodilators and in turn the prognosis of pulmonary hypertension (PH). We hypothesized that pulmonary vasoreactivity is impaired, and examined the underlying mechanisms, in the sugen-hypoxia rat model of severe PH. Male Sprague-Dawley rats were injected with sugen (20 mg/kg sc) and exposed to hypoxia (9% O2) for 3 weeks followed by 4 weeks in normoxia (Su/Hx), or treated with sugen alone (Su) or hypoxia alone (Hx) or neither (Nx). After hemodynamic measurements, the heart was assessed for right ventricular hypertrophy (Fulton's Index), the pulmonary artery, aorta and mesenteric arteries were isolated for vascular function studies, and contractile markers were measured in pulmonary artery using quantitative PCR...
December 6, 2017: Journal of Pharmacology and Experimental Therapeutics
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