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https://www.readbyqxmd.com/read/28629628/left-ventricular-outflow-tract-obstruction-and-its-impact-on-systolic-ventricular-function-and-exercise-capacity-in-adults-with-a-subaortic-right-ventricle
#1
Annina Stauber, Céline Wey, Matthias Greutmann, Daniel Tobler, Kerstin Wustmann, Andreas Wahl, Emanuela R Valsangiacomo Buechel, Matthias Wilhelm, Markus Schwerzmann
BACKGROUND: In biventricular hearts the filling and contractility of one ventricle affects the performance of the other. In this study, we compared right ventricular systolic function and exercise capacity in patients with a subaortic right ventricle (RV) in relation to the presence of a left ventricular outflow tract obstruction (LVOTO). METHODS: Retrospective chart review of adults with congenitally corrected transposition of the great arteries (ccTGA) or with a previous atrial switch procedure for complete TGA (D-TGA)...
June 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28611863/effect-of-azilsartan-on-day-to-day-variability-in-home-blood-pressure-a-prospective-multicenter-clinical-trial
#2
Toru Miyoshi, Ryoji Suetsuna, Naoto Tokunaga, Masayasu Kusaka, Ryuichiro Tsuzaki, Kazuya Koten, Kohno Kunihisa, Hiroshi Ito
BACKGROUND: The blood pressure variability (BPV) such as visit-to-visit, day-by-day, and ambulatory BPV has been also shown to be a risk of future cardiovascular events. However, the effects of antihypertensive therapy on BPV remain unclear. The purpose of this study was to evaluate the effect of azilsartan after switching from another angiotensin II receptor blocker (ARB) on day-to-day BPV in home BP monitoring. METHODS: This prospective, multicenter, open-labeled, single-arm study included 28 patients undergoing treatment with an ARB, which was switched to azilsartan after enrollment...
July 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28608149/exercise-capacity-and-self-efficacy-are-associated-with-moderate-to-vigorous-intensity-physical-activity-in-children-with-congenital-heart-disease
#3
Laura Banks, Shelly Rosenthal, Cedric Manlhiot, Chun-Po Steve Fan, Adam McKillop, Patricia E Longmuir, Brian W McCrindle
This study sought to determine whether exercise capacity, self-efficacy, and gross motor skills are associated with moderate-to-vigorous physical activity (MVPA) levels in children, and if these associations differ by congenital heart disease (CHD) type. Medical history was abstracted from chart review. We assessed MVPA levels (via accelerometry), percent-predicted peak oxygen consumption ([Formula: see text] cardiopulmonary exercise test), gross motor skill percentiles (test of gross motor development version-2), and self-efficacy [children's self-perceptions of adequacy and predilection for physical activity scale (CSAPPA scale)]...
June 12, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28603491/nosh-nbp-a-novel-nitric-oxide-and-hydrogen-sulfide-releasing-hybrid-attenuates-ischemic-stroke-induced-neuroinflammatory-injury-by-modulating-microglia-polarization
#4
Jing Ji, Pengjun Xiang, Tingting Li, Li Lan, Xiaole Xu, Guo Lu, Hui Ji, Yihua Zhang, Yunman Li
NOSH-NBP, a novel nitric oxide (NO) and hydrogen sulfide (H2S)-releasing hybrid, protects brain from ischemic stroke. This study mainly aimed to investigate the therapeutic effect of NOSH-NBP on ischemic stroke and the underlying mechanisms. In vivo, transient middle cerebral artery occlusion (tMCAO) was performed in C57BL/6 mice, with NO-NBP and H2S-NBP as controls. NO and H2S scavengers, carboxy-PTIO and BSS, respectively, were used to quench NO and H2S of NOSH-NBP. In vitro, BV2 microglia/BMDM were induced to the M1/2 phenotype, and conditioned medium (CM) experiments in BV2 microglia, neurons and b...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28598551/coronary-artery-bypass-grafting-in-infants-children-and-young-adults-for-acquired-and-congenital-lesions
#5
Constantine Mavroudis
Coronary artery disease ranges from congenital in origin such as anomalous aortic origin of a coronary artery (AAOCA) to acquired diseases such as Kawasaki disease, and previously repaired conditions such as transposition of the great arteries. It is not uncommon, in the long run, for proximal coronary stenosis to develop following arterial switch, AAOCA repair, Ross procedure and Kawasaki disease leading to coronary artery bypass grafing (CABG). The objective of this report is to discuss the indications, challenges, and outcomes of CABG in infants, children, and young adults with acquired and congenital lesions...
June 9, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28597779/phosphodiesterase-type-5-inhibitor-to-riociguat-transition-is-associated-with-hemodynamic-and-symptomatic-improvement-in-pulmonary-hypertension
#6
Ryan Davey, Raymond L Benza, Srinivas Murali, Amresh Raina
Riociguat is a soluble guanylate cyclase stimulator approved for the treatment of pulmonary arterial hypertension and chronic thromboembolic pulmonary hypertension. We studied the clinical and hemodynamics effects of transitioning 12 pulmonary hypertension patients from Phosphodiesterase type 5 inhibitor (PDE5i) to riociguat, and demonstrated a significant increase in cardiac index, fall in pulmonary vascular resistance, and improvement in functional class with this switch. Switch from PDE5i to riociguat appeared to be safe and fairly well tolerated in most patients...
April 2017: Pulmonary Circulation
https://www.readbyqxmd.com/read/28593884/transposition-of-subclavian-artery-is-it-the-appropriate-choice
#7
Nikola Lazovski, Sasko Jovev, Dusan Babic, Srdjan Babic, Omer Dzemali
INTRODUCTION: To present patients with symptomatic subclavian artery disease and treatment possibility. CASE REPORT: A 53-year-old female was admitted with vertigo and left arm claudication. Duplex-scan and MSCT arteriography verified subclavian artery occlusion. After the endovascular treatment failure, the patient was switched to surgical treatment - subclavian artery transposition. After the successful surgical treatment, the patient was discharged on the second postoperative day...
March 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/28589900/mir-26a-contributes-to-the-pdgf-bb-induced-phenotypic-switch-of-vascular-smooth-muscle-cells-by-suppressing-smad1
#8
Xiaoyan Yang, Mei Dong, Hao Wen, Xiaoling Liu, Meng Zhang, Lianyue Ma, Cheng Zhang, Xiaorong Luan, Huixia Lu, Yun Zhang
The phenotypic switch of vascular smooth muscle cells (VSMCs) is a key event in the pathogenesis of various vascular diseases, such as atherosclerosis and post-angioplasty restenosis. Small non-coding microRNAs (miRNAs) have emerged as critical modulators of VSMC function. In the present study, miR-26a was significantly increased in cultured VSMCs stimulated by platelet-derived growth factor-BB (PDGF-BB) and in arteries with neointimal lesion formation. Moreover, we demonstrated that miR-26a regulates the expression of VSMC differentiation marker genes such as α-smooth muscle actin (α-SMA), calponin and smooth muscle myosin heavy chain (SM-MHC) in PDGF-BB-treated VSMCs...
May 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28579227/d-tga-combined-with-left-arch-atresia-of-a-double-aortic-arch
#9
Dan Zhou, Laichun Song, Liang Tao, Hong Zhou
A three-month-old female underwent an arterial switch operation for transposition of the great arteries (TGA) with concomitant ventricular septal defect (VSD). After the operation, the patient suffered from stubborn pulmonary infection with increased airway resistance, and could not be weaned from a ventilator. Multispiral computed tomography (CT) scanning suggested a double aortic arch with left arch atresia. The patient underwent a second procedure to resection the left aortic arch. The patient gradually recovered and was successfully weaned from the ventilator...
May 5, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28576266/safety-and-tolerability-of-transitioning-from-cangrelor-to-ticagrelor-in-patients-who-underwent-percutaneous-coronary-intervention
#10
Hisham A Badreldin, Danielle Carter, Bryan M Cook, Arman Qamar, Muthiah Vaduganathan, Deepak L Bhatt
The 3 phase 3 CHAMPION (Cangrelor vs Standard Therapy to Achieve Optimal Management of Platelet Inhibition) trials collectively demonstrated the safety of transitioning from cangrelor, a potent, parenteral rapidly-acting P2Y12 inhibitor, to clopidogrel in patients who underwent percutaneous coronary intervention (PCI). However, variation in timing of therapy, site-specific binding, and drug half-lives may theoretically complicate switching to other oral P2Y12 inhibitors. Since regulatory approval, limited data are available regarding the "real-world" safety and tolerability of transitioning to these more potent oral P2Y12 antagonists...
May 10, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28566262/effect-of-phosphodiesterase-5-inhibition-with-tadalafil-on-systemic-right-ventricular-size-and-function-a-multi-center-double-blind-randomized-placebo-controlled-clinical-trial-serve-trial-rational-and-design
#11
Daniel Tobler, Judith Bouchardy, Engel Reto, Dik Heg, Christian Müller, André Frenk, Harald Gabriel, Jürg Schwitter, Tobias Rutz, Ronny R Buechel, Matthias Willhelm, Lukas Trachsel, Michael Freese, Matthias Greutmann, Markus Schwerzmann
BACKGROUND: Patients with a systemic right ventricle (RV) have a compromised late outcome caused by ventricular dysfunction. Standard medical heart failure therapy has not been shown to improve RV function and survival in these patients. Phosphodiesterase (PDE)-5 inhibition increases contractility in experimental models of RV hypertrophy, but not in the normal RV. In clinical practice, the effects of PDE-5 inhibition on systemic RV function and exercise capacity in adults with a systemic RV have not been tested...
May 23, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28555094/effects-of-fat-and-sugar-either-consumed-or-infused-toward-the-brain-on-hypothalamic-er-stress-markers
#12
Evita Belegri, Merel Rijnsburger, Leslie Eggels, Unga Unmehopa, Wiep Scheper, Anita Boelen, Susanne E la Fleur
Protein-folding stress at the Endoplasmic Reticulum (ER) occurs in the hypothalamus during diet-induced obesity (DIO) and is linked to metabolic disease development. ER stress is buffered by the activation of the unfolded protein response (UPR), a controlled network of pathways inducing a set of genes that recovers ER function. However, it is unclear whether hypothalamic ER stress during DIO results from obesity related changes or from direct nutrient effects in the brain. We here investigated mRNA expression of UPR markers in the hypothalamus of rats that were exposed to a free choice high-fat high-sugar (fcHFHS) diet for 1 week and then overnight fed ad libitum, or fasted, or fat/sugar deprived (i...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28540569/altered-purinergic-signaling-in-uridine-adenosine-tetraphosphate-induced-coronary-relaxation-in-swine-with-metabolic-derangement
#13
Zhichao Zhou, Oana Sorop, Vincent J de Beer, Ilkka Heinonen, Caroline Cheng, A H Jan Danser, Dirk J Duncker, Daphne Merkus
We previously demonstrated that uridine adenosine tetraphosphate (Up4A) induces potent and partially endothelium-dependent relaxation in the healthy porcine coronary microvasculature. We subsequently showed that Up4A-induced porcine coronary relaxation was impaired via downregulation of P1 receptors after myocardial infarction. In view of the deleterious effect of metabolic derangement on vascular function, we hypothesized that the coronary vasodilator response to Up4A is impaired in metabolic derangement, and that the involvement of purinergic receptor subtypes and endothelium-derived vasoactive factors (EDVFs) is altered...
May 24, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/28537999/imaging-the-adult-with-transposition-of-the-great-arteries
#14
Jason H Anderson, Frank Cetta
PURPOSE OF REVIEW: Patients with complete and congenitally corrected transposition of the great arteries commonly survive into adulthood and present with a vast array of clinical residua. RECENT FINDINGS: Echocardiography remains the primary imaging modality in the routine assessment of the adult with transposition of the great arteries. It provides a comprehensive anatomic and hemodynamic evaluation. Limitations to echocardiography include evaluation of the following: the systemic right ventricle, baffle patency following atrial switch procedure, coronary arteries following arterial switch procedure or Nikadoh, and multilevel right ventricular outflow tract obstruction...
May 19, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28508510/impaired-atrioventricular-transport-in-patients-with-transposition-of-the-great-arteries-palliated-by-atrial-switch-and-preserved-systolic-right-ventricular-function-a-magnetic-resonance-imaging-study
#15
Magalie Ladouceur, Nadjia Kachenoura, Gilles Soulat, Emilie Bollache, Alban Redheuil, Michel Azizi, Christophe Delclaux, Gilles Chatellier, Pierre Boutouyrie, Laurence Iserin, Damien Bonnet, Elie Mousseaux
OBJECTIVES: We aimed (1) determine if systemic right ventricle filling parameters influence systemic right ventricle stroke volume in adult patients with D-transposition of the great arteries (D-TGA) palliated by atrial switch, using cardiac magnetic resonance imaging and echocardiography, and (2) to study relationship of these diastolic parameters with exercise performance and BNP, in patients with preserved systolic systemic right ventricle function. DESIGN: Single-center, cross-sectional, prospective study...
May 16, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28494463/plasma-drug-concentrations-in-patients-with-pulmonary-arterial-hypertension-on-combination-treatment
#16
Ekkehard Grünig, Johanna Ohnesorge, Nicola Benjamin, Jürgen Burhenne, Yeliz Enderle, Benjamin Egenlauf, Christine Fischer, Satenik Harutyunova, Andrea Huppertz, Hans Klose, Walter E Haefeli
BACKGROUND: Combination therapy with the phosphodiesterase type 5 inhibitors (PDE-5i) sildenafil or tadalafil and the endothelin receptor antagonists (ERA) bosentan, ambrisentan, or macitentan may cause mutual pharmacokinetic interactions in patients with pulmonary arterial hypertension (PAH). OBJECTIVE: The objective of this study was to analyze plasma drug concentrations in PAH patients receiving different combination treatments. METHODS: PAH patients receiving a stable combination treatment with ERA and PDE-5i with targeted dosage for at least 1 month were routinely assessed, including clinical parameters and plasma drug concentrations...
2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28490161/endovascular-stroke-therapy-focused-on-stent-retriever-thrombectomy-and-direct-clot-aspiration-historical-review-and-modern-application
#17
REVIEW
Dong-Hun Kang, Jaechan Park
Intravenous recombinant tissue plasminogen activator had been the only approved treatment for acute ischemic stroke since its approval in 1995. However, the restrictive time window, numerous contraindications, and its low recanalization rate were all limitations of this modality. Under those circumstances, endovascular stroke therapy went through a great evolution during the past two decades of intravenous thrombolysis. The results of the 2013 randomized trials for endovascular stroke therapy were neutral, although they were limited by insufficient imaging screening at enrollment, early-generation devices with less efficacy, and treatment delays...
May 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28484576/influence-of-geometric-changes-in-the-thoracic-aorta-due-to-arterial-switch-operations-on-the-wall-shear-stress-distribution
#18
Tomohiro Fukui, Hiroaki Asama, Manabu Kimura, Toshiyuki Itoi, Koji Morinishi
BACKGROUND: The transposition of the great arteries (TGA) is one of the most severe congenital heart diseases. The arterial switch operation (ASO) is the preferred procedure to treat TGA. Although numerous reports have shown good results after ASOs, some patients suffer from circulatory system problems following the procedure. One reason for problems post-ASO is the local changes in the curvature and torsion of the thoracic aorta. OBJECTIVE: The influence of these geometric changes on the blood flow field needs to be investigated in detail to consider possible cardiovascular problems after an ASO...
2017: Open Biomedical Engineering Journal
https://www.readbyqxmd.com/read/28481992/iatrogenic-subintimal-aortic-dissection-that-disappeared-without-a-trace
#19
Kazumasa Orihashi, Kazuki Kihara, Masaki Yamamoto, Hideaki Nishimori
A case of an unusual iatrogenic aortic dissection is reported. A 77-year-old male patient in shock status due to acute type A aortic dissection underwent emergency surgery. Systemic perfusion was started via the femoral artery, but another dissection appeared in the descending aorta detected by transoesophageal echocardiography. However, the flap was unusually thin, and there was no change in the pre-existing thrombosed false lumen. These findings suggested subintimal development of dissection. After systemic perfusion was promptly switched to antegrade perfusion, the new dissection could no longer be detected...
May 6, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28480501/arterial-switch-operation-and-plasma-biomarkers-analysis-and-correlation-with-early-postoperative-outcomes
#20
Raffaele Giordano, Massimiliano Cantinotti, Luigi Arcieri, Vincenzo Poli, Vitali Pak, Bruno Murzi
The aims of our study were to describe plasma brain natriuretic peptide (BNP), Troponin I (TnI), and Cystatin C (Cys-C) concentration kinetics in the postoperative period after arterial switch operation in neonate, and to test the correlation between the plasma biomarkers and early clinical outcomes. We prospectively enrolled 29 neonates who underwent ASO. All patients received Custodiol cardioplegia. Blood samples were collected preoperatively (one day before) and in the ICU immediately after admission, and then 6, 12, 24, and 48 h after surgery...
May 8, 2017: Pediatric Cardiology
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