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Cardiology Journal

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https://www.readbyqxmd.com/read/27910085/sprint-fidelis-implantable-cardioverter-defibrillators-lead-patient-management-and-survival-single-center-study
#1
Marcin Grabowski, Jakub Kosma Rokicki, Sylwia Gajda, Łukasz Januszkiewicz, Andrzej Cacko, Przemysław Stolarz, Grzegorz Opolski
BACKGROUND: Over the last several years significant rises in the use of implanted cardioverter-defibrillators (ICD) have also resulted in a number of associated complications. This number includes lead failure. Sprint Fidelis ICD lead (SF) is regarded as a lead with elevated failure risk. Every center acting in accordance with the guidelines should observe patients more thoroughly especially with recalled leads and run a registry of their follow-up. The aim of the present research was to observe patients with SF leads (types 6948, 6949) from a single implantation center...
December 2, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27910084/levosimendan-accelerates-recovery-in-patients-with-takotsubo-cardiomyopathy
#2
Mehmet Yaman, Ugur Arslan, Ahmet Kaya, Aytac Akyol, Fatih Ozturk, Yunus Emre Okudan, Adil Bayramoglu, Osman Bektas
BACKGROUND: The aim of this study was to determine the efficacy and safety of levosimendan in takotsubo cardiomyopathy (TC). METHODS: The study was conducted in a retrospective design and 42 consecutive patients were enrolled in 6 cardiovascular centers in Turkey. The records of TC patients having left ventricular ejection fraction (LVEF) ≤ 35% were examined at admission, discharge and recovery period including their clinical and echocardiographic data were recorded...
December 2, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27910083/radiofrequency-catheter-ablation-of-accessory-pathways-in-patients-with-ebstein-s-anomaly-at-8-years-of-follow-up
#3
Michał Orczykowski, Paweł Derejko, Robert Bodalski, Piotr Urbanek, Joanna Zakrzewska-Koperska, Radosław Sierpiński, Katarzyna Kalin, Andrzej Hasiec, Grzegorz Warmiński, Maria Miszczak-Knecht, Katarzyna Bieganowska, Rafał Baranowski, Maria Bilińska, Elżbieta Biernacka, Piotr Hoffman, Łukasz Szumowski
BACKGROUND: Data regarding long-term follow-up of radiofrequency catheter ablation (RFCA) of accessory pathways (APs) in patients with Ebstein's anomaly (EA) are limited. The procedures are challenging due to multiple or wide APs. METHODS: Analysis was performed on clinical and periprocedural data of patients with EA referred to the centre in order to perform catheter ablation of accessory pathway (AP). The group consisted of 22 patients (female 40.9%, mean age 33...
December 2, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27910082/impact-of-the-presence-of-chronically-occluded-coronary-artery-on-long-term-prognosis-of-patients-with-acute-st-segment-elevation-myocardial-infarction
#4
Maciej Lesiak, Monika Cugowska, Aleksander Araszkiewicz, Marek Grygier, Małgorzata Pyda, Włodzimierz Skorupski, Przemysław Mitkowski, Magdalena Łanocha, Stefan Grajek
BACKGROUND: Multivessel disease (MVD) is a significant risk factor in patients with acute ST-segment elevation myocardial infarction (STEMI). Whether the presence of chronic total occlusion (CTO) poses an additional hazard is still unknown. The objective of this study was to evaluate the impact of CTO on survival in STEMI patients. METHODS: The study group consisted of 836 STEMI patients treated with primary percutaneous coronary intervention (PCI). MVD was diagnosed in 52...
December 2, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27748502/preliminary-study-of-beta-blocker-therapy-on-modulation-of-interleukin-33-st2-signaling-during-ventricular-remodeling-after-acute-myocardial-infarction
#5
Jinggang Xia, Yang Qu, Chunlin Yin, Dong Xu
BACKGROUND: This study aimed to evaluate the role of β-blocker therapy on modulating interleukin (IL)-33/ST2 (interleukin-1 receptor-like 1) signaling during ventricular remodeling related to heart failure (HF) after acute myocardial infarction (AMI). METHODS: Sprague-Dawley rats that survived surgery to induce AMI were randomly divided into the placebo group and the β-blocker treatment group. A sham group was used as a control. Left ventricular (LV) function variables, the myocardial infarct size, fibrosis and IL-33/ST2 protein expression was measured...
October 17, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27748501/circulating-micrornas-as-novel-biomarkers-for-dilated-cardiomyopathy
#6
Hua Wang, Feng Chen, Jiabin Tong, Yingying Li, Jianping Cai, Yan Wang, Peng Li, Yichun Hao, Weimeng Tian, You Lv, Jia Chong, Jiefu Yang
BACKGROUND: Circulating microRNAs (miRNAs) potentially carry disease-specific information. In the current study, we aim to characterize the miRNA signature in plasma from dilated cardiomyopathy (DCM) patients and assess the possible correlation between expression levels of circulating miRNAs and symptom severity in DCM patients. METHODS: Using microarray-based miRNA expression profiling, we compared the miRNA expression levels in plasma samples from 4 DCM patients and 3 healthy controls...
October 17, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27748500/the-differences-in-the-relationship-between-diastolic-dysfunction-selected-biomarkers-and-collagen-turn-over-in-heart-failure-patients-with-preserved-and-reduced-ejection-fraction
#7
Blazej Michalski, Przemyslaw Trzcinski, Karolina Kupczynska, Dawid Miskowiec, Lukasz Peczek, Barbara Nawrot, Piotr Lipiec, Jaroslaw D Kasprzak
BACKGROUND: The aim of the study was to assess the correlation of the selected biomarkers and collagen turn-over indices with advanced echocardiographic parameters among patients with preserved and reduced ejection fraction (EF). METHODS: We included 62 patients with the symptomatic heart failure. The patients were divided in to two groups according to the evaluated ejection fraction (EF - Simpson method): heart failure with reduced ejection fraction (HFrEF) group - 30 patients with low EF - 35-50% (16 male, mean age 54...
October 17, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27748499/increased-sensitivity-of-prolonged-p-wave-during-exercise-stress-test-in-detection-of-angiographically-documented-coronary-artery-disease
#8
Agnieszka Wsol, Wioletta Wydra, Marek Chmielewski, Andrzej Swiatowiec, Marek Kuch
BACKGROUND: A retrospective study was designed to investigate P-wave duration changes in exercise stress (EST) test for the prediction of angiographically documented substantial coronary artery disease (CAD). METHODS: We analyzed 265 cases of patients, who underwent EST and subsequently coronary angiography. Analysis of P-wave duration was performed in leads II, V5 at rest, and in the recovery period. RESULTS: The sensitivity and specificity for the isolated ST-segment depression were only 31% and 76%, respectively...
October 17, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27747858/short-and-mid-term-outcome-of-transcatheter-aortic-valve-implantation-in-patients-with-advanced-age
#9
Anna Olasińska-Wiśniewska, Marek Grygier, Maciej Lesiak, Olga Trojnarska, Aleksander Araszkiewicz, Anna Komosa, Marcin Misterski, Marek Jemielity, Marek Proch, Stefan Grajek
BACKGROUND: In patients treated with transcatheter aortic valve implantation (TAVI), age is recognized as one of the most important risk factors. The aim of our study was to evaluate whether early and mid-term results of TAVI were worse in patients over 85 year old compared with the younger population. METHODS: From September 2010 to November 2015, 162 consecutive patients (mean age 78.4 ±7.1 years, 47.5 % females) underwent TAVI in our Institution. Patients were divided into two groups: 1) elderly (≥ 85 year old) and 2) younger patients (< 85 year old)...
October 17, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27747857/three-dimensional-printing-guided-percutaneous-transcatheter-closure-of-secundum-atrial-septal-defect-with-rim-deficiency-first-human-case-series
#10
Zhongmin Wang, Yuhao Liu, Yu Xu, Chuanyu Gao, Yan Chen, Hongxing Luo
BACKGROUND: WE AIMED TO PROSPECTIVELY EVALUATE THE: use of 3-dimensional printing (3DP) for the percutaneous transcatheter closure of a secundum atrial septal defect (ASD) with rim deficiency less than 5 mm. METHODS: Patients with ASD were scanned using multi-slice computed tomography to acquire raw data for virtual 3DP reconstruction models. Different ASD occluders were tried on the 3DP models to select the optimal size for intraoperative use. The patients were followed up 1 month postoperatively, and 3DP models were again manufactured to observe the operative effects...
October 17, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27747856/influence-of-echocardiographic-and-radiographic-characteristics-on-atrial-sensing-amplitude-in-patients-with-linox-smart-s-dx-defibrillation-leads
#11
Marcin Michalak, Andrzej Cacko, Agnieszka Kapłon-Cieślicka, Monika Budnik, Przemysław Stolarz, Grzegorz Opolski, Marcin Grabowski
BACKGROUND: Single-lead for implantable cardioverter-defibrillator (ICD) with floating atrial sensing dipole is a new diagnostic tool with the potential advantage in terms of arrhythmia discrimination. We sought to determine whether right heart size and dipole position influence atrial sensing. METHODS: Atrial sensing amplitude (AS) was measured during implantation (PP, periprocedural), predischarge (IHFU, in-hospital follow-up) and 3-6 months after the procedure (AFU, ambulatory follow-up)...
October 17, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27734460/enhancement-of-beta-catenin-in-cardiomyocytes-suppresses-survival-protein-expression-but-promotes-apoptosis-and-fibrosis
#12
James C Lin, Wei-Wen Kuo, Rathinasamy Baskaran, Ming-Cheng Chen, Tsung-Jung Ho, Ray-Jade Chen, Ya-Fang Chen, Viswanadha Vijaya Padma, Ing-Shiow Lay, Chih-Yang Huang
BACKGROUND: Beta-catenin has been implicated in cell-cell communication in a wide variety of developmental and physiological processes. Defective Wnt signaling could result in various cardiac and vascular abnormalities. Little is known regarding Wnt/frizzled pathway in cardiomyocyte apoptosis. METHODS: In this study, the role of β-catenin in apoptosis was investigated in H9c2 cardiomyocytes and primary cardiomyocytes isolated in diabetic Wistar rats. The cardiomyocytes were transfected with porcine cytomegalovirus (pCMV)-β-catenin plasmid in order to overexpress β-catenin...
October 13, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27734459/characteristics-of-chaotic-processes-in-electrocardiographically-identified-ventricular-arrhythmia
#13
Andrzej Mysiak, Małgorzata Kobusiak-Prokopowicz, Konrad Kaaz, Kamila Jarczewska, Wojciech Glabisz
BACKGROUND: The theory of chaos proves a deterministic mechanism of induction of multiple complex processes previously thought to be random in nature. This research explains how these complex processes develop. The aim of the study was to test the hypothesis of the chaotic nature of myocardial electrical events during ventricular tachycardia (VT) and ventricular fibrillation (VF). METHODS: Original hardware and software was developed for digitalization of on-line electrocardiography (ECG) data, with the functions of automatic and manual identification as well as categorization of specific ventricular arrhythmias...
October 13, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27734458/alcohol-septal-ablation-in-hypertrophic-cardiomyopathy-utilizing-a-longitudinal-17-year-study-mean-10-8-observation-follow-ups-taken-at-a-single-medical-centre
#14
Andrzej Wojtarowicz, Zdzisława Kornacewicz-Jach
BACKGROUND: Alcohol septal ablation (ASA) is a method of treatment in obstructive hypertrophic cardiomyopathy (HOCM), but there is little data on the long-term results of ASA and the natural course after treatment. The aim of the study was to evaluate the results of ASA in HOCM in multiannual observation, and its impact on patient survival, exercise capacity, electrical complications, and changes in the anatomy and function of the heart. METHODS: The study evaluated 47 patients with HOCM with a high left ventricular outflow tract (LVOT gradient) treated between 1997 and 2014 with ASA...
October 13, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27734457/impact-of-cyclosporine-a-use-in-the-prevention-of-reperfusion-injury-in-acute-myocardial-infarction-a-meta-analysis
#15
Sunil Upadhaya, Seetharamprasad Madala, Ramkaji Baniya, Suresh Kumar Subedi, Kalyan Saginala, Ghassan Bachuwa
BACKGROUND: Reperfusion injury is an important limiting factor associated with revascularization in acute myocardial infarction (AMI). Various therapies have been tried in an attempt to prevent reperfusion injury, but the search has been elusive. The role of cyclosporine A (CsA) in the prevention of reperfusion injury in AMI is still not clear. The objective of this study was to find out whether CsA is beneficial in reducing reperfusion injury in acute ST elevation myocardial infarction...
October 13, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27734456/-opioidergic-postconditioning-of-heart-muscle-during-ischemia-reperfusion-injury
#16
Marcin Kunecki, Wojciech Płazak, Tomasz Roleder, Jolanta Biernat, Tomasz Oleksy, Piotr Podolec, Krzysztof Stanisław Gołba
BACKGROUND: Ischemic preconditioning (IPC) and postconditioning (POC) are the novel strategies of attaining cardioprotection against ischemia/reperfusion (I/R) injury. Previous studies suggested the role of opioid pathway, however the class of opioid receptors responsible for this effect in humans remains unknown. The aim of the study was to assess the influence of opioids on simulated I/R injury outcomes in the human myocardium. METHODS: Trabeculae of the human right atrium were electrically driven in organ bath and subjected to simulated I/R injury...
October 13, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27734455/complications-in-recipients-of-cardioverter-defibrillator-or-cardiac-resynchronization-therapy-insights-from-silesian-center-defibrillator-registry
#17
Mateusz Tajstra, Elżbieta Gadula-Gacek, Anna Kurek, Elżbieta Adamowicz-Czoch, Dawid Olszowski, Mateusz Ostręga, Aneta Ciślak, Łukasz Pyka, Michał Hawranek, Andrzej Lekston, Lech Poloński, Mariusz Gąsior
BACKGROUND: Current real-life information from all-comers registries from middle and east Europe about the incidence and type of complications during long-term follow-up of patients with cardioverters-defibrillators (ICD) and cardiac resynchronization devices-defibrillators (CRT-D) is still insufficient. The aim of the study was to assess the incidence and determinants of short- and long-term complications related to implantable ICD and CRT-D. METHODS: We studied 1,105 recipients hospitalized in our center in 2009-2013, followed for a mean of 2...
October 13, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27714725/in-vitro-assessment-of-six-aspiration-catheters-using-a-distal-protection-filter
#18
Tatsuhiro Fujimura, Takayuki Okamura, Miyuki Ando, Kousuke Uchida, Takashi Tone, Fumio Yonezawa, Masafumi Yano
BACKGROUND: We assessed performance of six aspiration catheters for distal embolization using a distal protection filter in an in vitro experiment. In acute myocardial infarction, a distal protection filter is used for lesions likely to induce a distal embolism, and an aspiration catheter is used for filter no-flow. It has not been known which aspiration catheter is the most effective used with a distal protection filter. METHODS: A 0.5-cm³ bolus of gelatin as a model of stagnant pools of coronary plaque debris was captured in the distal protection filter and aspirated by six aspiration catheters...
October 7, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27714724/assessment-of-cardiovascular-function-following-transcatheter-aortic-valve-implantation-based-on-6-minute-walk-test
#19
Piotr Chodór, Krzysztof Wilczek, Teresa Zielińska, Roman Przybylski, Jan Głowacki, Łukasz Włoch, Marian Zembala, Zbigniew Kalarus
BACKGROUND: Transcatheter aortic valve implantation (TAVI) is presently a recognized treatment modality for patients with severe aortic stenosis ineligible for surgery. It reduces mortality as compared to the conservative treatment. It is further expected from this therapy to improve quality of life by improving of the cardiovascular function performance. The aim of this study is to compare patients' cardiovascular system efficiency in the 6-minute walk test (6MWT) made before and after TAVI and at the 6-12-month follow-up...
October 7, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27714723/estimation-of-shear-stress-by-using-a-myocardial-bridge-mural-coronary-artery-simulating-device
#20
Hao Ding, Qian Yang, Kun Shang, Hailian Lan, Jie Lv, Zhilin Liu, Yang Liu, Lixing Sheng, Yanjun Zeng
BACKGROUND: This study was aimed at developing a myocardial bridge-mural coronary artery simulative device and analyzing the relationship between shear stress on the mural coronary artery and atherosclerosis. METHODS: A myocardial bridge-mural coronary artery simulative device was used to simulate experiments in vitro. In the condition of maintaining any related parameters such as system temperature, average flow rate, and heart rate, we calculated and observed changes in proximal and distal mean values, and oscillatory value of shear stress on the mural coronary artery by regulating the compression level of the myocardial bridge to the mural coronary artery...
October 7, 2016: Cardiology Journal
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