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https://www.readbyqxmd.com/read/29334508/practical-valvular-issues-in-patients-requiring-ventricular-assist-devices
#1
Mitesh Badiwala, Terrence Yau
PURPOSE OF REVIEW: As ventricular assist device (VAD) therapy in patients with advanced heart failure continues to grow, experience with concomitant valvular diseases present either before or after VAD implantation continues to accrue. In this review, we discuss recent data and current practice as it pertains to the subject of concomitant valvular disease in patients requiring VADs. RECENT FINDINGS: Persistent aortic valve closure has been identified as a potential contributor to aortic valve 'disuse atrophy' resulting in valve degeneration...
January 13, 2018: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/29333727/the-relation-between-maximal-voluntary-force-in-m-palmaris-longus-and-the-temporal-and-spatial-summation-of-muscle-fiber-recruitment-in-human-subjects
#2
Cécyl G Claudel, Waqas Ahmed, Vibeke S Elbrønd, Adrian P Harrison, Else Marie Bartels
This study aimed at looking at the frequency (T-score) and the amplitude (S-score) of fiber use during contraction of a forearm muscle, m. palmaris longus, as measured by acoustic myography (AMG). An additional aim was to relate the T- and S-scores to the recorded force obtained from a hand dynamometer. The hypothesis being that temporal and spatial summation of muscle fiber contraction in a given muscle during a given movement, can together describe a given obtained force. Force measurements were carried out on 12 healthy human subjects aged 19-68 years (6 men & 6 women), while their m...
January 2018: Physiological Reports
https://www.readbyqxmd.com/read/29333121/minimally-invasive-electrochemotherapy-procedure-for-treating-nasal-duct-tumors-in-dogs-using-a-single-needle-electrode
#3
Felipe Maglietti, Matías Tellado, Nahuel Olaiz, Sebastian Michinski, Guillermo Marshall
Background: Nasal cavity tumors are usually diagnosed late, when they already have infiltrated adjacent tissues thus requiring very aggressive treatments with serious side effects. Here we use electrochemotherapy (ECT), a well demonstrated treatment modality for superficial tumors. Materials and methods: In the case of deep-seated tumors, the main limitation of ECT is reaching the tumor with an appropriate electric field. To overcome this limitation we introduce the single needle electrode (SiNE), a minimally invasive device that can deliver an appropriate electric field with a simple procedure...
December 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/29332919/high-intensity-interval-training-for-severe-left-ventricular-dysfunction-treated-with-left-ventricular-assist-device
#4
Yusuke Ugata, Hiroshi Wada, Kenichi Sakakura, Tatsuro Ibe, Miyuki Ito, Nahoko Ikeda, Hideo Fujita, Shin-Ichi Momomura
Aerobic training based on anaerobic threshold (AT) is well-known to improve cardiac function, exercise capacity, and long-term outcomes of patients with heart failure. Recent reports suggested that high-intensity interval training (HIIT) for patients with cardiovascular disease may improve cardiopulmonary exercise capacity. We present a 61-year-old male patient of severe left ventricular dysfunction with left ventricular assisted device (LVAD). Following HIIT for 8 weeks, exercise capacity and muscle strength have improved without worsening left ventricular function...
January 15, 2018: International Heart Journal
https://www.readbyqxmd.com/read/29332914/long-term-clinical-outcomes-after-treatment-with-excimer-laser-coronary-atherectomy-for-in-stent-restenosis-of-drug-eluting-stent
#5
Eiji Ichimoto, Tadayuki Kadohira, Takashi Nakayama, Joseph De Gregorio
Excimer laser coronary atherectomy (ELCA) has been used for the treatment of complex percutaneous coronary intervention (PCI) such as in-stent restenosis (ISR). However, little information was provided about the clinical outcomes after treatment with ELCA for ISR of drug-eluting stents (DES). This study aimed to investigate the long-term clinical outcomes after PCI with ELCA for ISR of DES.A total of 81 consecutive patients with 87 lesions who underwent PCI for ISR of DES were included. Patients were classified into a PCI with ELCA group (23 patients with 24 lesions) and a PCI without ELCA group (58 patients with 63 lesions)...
January 15, 2018: International Heart Journal
https://www.readbyqxmd.com/read/29332842/ligand-cascading-nano-delivery-devices-to-enable-multiscale-targeting-of-anti-neurodegenerative-therapeutics
#6
Adam Mullis, Benjamin William Schlichtmann, Balaji Narasimhan, Rebecca Cademartiri, Surya K Mallapragada
Neurodegenerative diseases are a debilitating set of conditions that affect a significant fraction of the world's population, and this fraction is expected to increase as the population ages. Many therapeutic strategies have been explored to treat the pathological mechanisms of neurodegenerative disease, but multiple sequential hurdles to central nervous system delivery, including the blood-brain barrier, diseased neuronal membranes, and the organelle barrier, make drug delivery challenging and necessitate the use of innovative strategies to target and cross each barrier...
January 15, 2018: Biomedical Materials
https://www.readbyqxmd.com/read/29332241/atrial-fibrillation-is-associated-with-sudden-cardiac-death-a-systematic-review-and-meta-analysis
#7
Pattara Rattanawong, Sikarin Upala, Tanawan Riangwiwat, Veeravich Jaruvongvanich, Anawin Sanguankeo, Wasawat Vutthikraivit, Eugene H Chung
PURPOSE: Recent studies suggest that atrial fibrillation (AF) is associated with increased cardiovascular risk and mortality including sudden cardiac death (SCD). According to the Cardiovascular Heath Study cohort, the incident rate of SCD was higher in the AF population (2.9 per 1000 per year) compared with non-AF controls (1.3 per 1000 per year). In this study, we performed a systematic review and meta-analysis to explore the association between AF and SCD. METHODS: We comprehensively searched the databases of MEDLINE and EMBASE from inception to January 2017...
January 13, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29332078/magnetic-resonance-guided-high-intensity-focused-ultrasound-for-treating-movement-disorders
#8
Young Goo Kim, Eun Jung Kweon, Won Seok Chang, Hyun Ho Jung, Jin Woo Chang
Transcranial magnetic resonance-guided focused ultrasound (MRgFUS) surgery has recently gained favor as a novel, noninvasive alternative to conventional neurosurgery. In contrast to traditional ablative interventions, transcranial MRgFUS surgery is entirely imaging-guided and uses continuous temperature measurements at the target and surrounding tissue taken in real-time. Unlike Gamma Knife radiosurgery, MRgFUS surgery can make a lesion immediately and does not use ionizing radiation. Moreover, since no metallic device is implanted, MR imaging-based diagnosis is not restricted throughout life...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29331901/an-ultrasensitive-detection-of-mirna-155-in-breast-cancer-via-direct-hybridization-assay-using-two-dimensional-molybdenum-disulfide-field-effect-transistor-biosensor
#9
Samira Mansouri Majd, Abdollah Salimi, Foad Ghasemi
MicroRNAs (miRNAs), critical biomarkers of acute and chronic diseases, play key regulatory roles in many biological processes. As a result, robust assay platforms to enable an accurate and efficient detection of low-level miRNAs in complex biological samples are of great significance. In this work, a label-free and direct hybridization assay using molybdenum disulfide (MoS2) field-effect transistor (FET) biosensor has been developed for ultrasensitive detection of miRNA-155 as a breast cancer biomarker in human serum and cell-line samples...
January 6, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29328067/a-physical-approach-to-model-occlusions-in-the-retinal-microvasculature
#10
O Fleck, T Savin
Blood occlusions in the retinal microvasculature contribute to the pathology of many disease states within the eye. These events can cause haemorrhaging and retinal detachment, leading to a loss of vision in the affected patient. Here, we present a physical approach to characterising the collective cell dynamics leading to plug formation, through the use of a bespoke microfluidic device, and through the derivation of a probabilistic model. Our microfluidic device is based on a filtration design that can tune the particle volume fraction of a flowing suspension within a conduit, with sizes similar to arterioles...
January 12, 2018: Eye
https://www.readbyqxmd.com/read/29327570/the-detour-procedure-no-more-need-for-conventional-bypass-surgery
#11
Dainis Krievins, Janis Savlovskis, Natalija Ezite, Andrew Hill, Kaspars Kisis, Marcis Gedins, Edgars Zellans, Andrew Holden
BACKGROUND: Long segment occlusive disease in the superficial femoral artery remains a treatment challenge despite advances in open surgical and endovascular approaches. We report initial clinical results of an entirely new procedure to perform femoropopliteal bypass using the DETOUR System to create a stentgraft bypass which originates in the SFA, travels through the femoral vein, and ends in the popliteal artery, bypassing the diseased segment. METHODS: Review the initial results of the first five patients at a single site enrolled in IRB-approved, prospective clinical study using the DETOUR System...
January 9, 2018: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29327362/p-wave-and-interatrial-block-new-predictor-for-atrial-high-rate-episodes-in-patients-with-cardiac-implantable-electronic-devices
#12
José M Rubio Campal, Juan Benezet-Mazuecos, José Antonio Iglesias Bravo, Pepa Sánchez Borque, Ángel Miracle Blanco, Juan José de la Vieja Alarcón, Jaime Martínez Mariscal, Adrian M Baranchuk, Jerónimo Farré Muncharaz
BACKGROUND: The presence of interatrial block (IAB) is associated with the development of atrial fibrillation (AF). The aim of this study was to determine whether P-wave duration and presence of IAB before the implantation of a cardiac implantable electronic device (CIED) are associated with the presence of atrial high rate episodes (AHRE), during long-term follow-up. METHODS: 380 patients (57% men; 75±10 years) were included. IAB was defined according to the International Consensus Criteria...
January 12, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29326990/a-fluorescent-microbead-based-microfluidic-immunoassay-chip-for-immune-cell-cytokine-secretion-quantification
#13
Xin Cui, Ya Liu, Dinglong Hu, Weiyi Qian, Chung Tin, Dong Sun, Weiqiang Chen, Raymond H W Lam
Quantitative and dynamic analyses of immune cell secretory cytokines are essential for precise determination and characterization of the "immune phenotype" of patients for clinical diagnosis and treatment of immune-related diseases. Although multiple methods including the enzyme-linked immunosorbent assay (ELISA) have been applied for cytokine detection, such measurements remain very challenging in real-time, high-throughput, and high-sensitivity immune cell analysis. In this paper, we report a highly integrated microfluidic device that allows for on-chip isolation, culture, and stimulation, as well as sensitive and dynamic cytokine profiling of immune cells...
January 12, 2018: Lab on a Chip
https://www.readbyqxmd.com/read/29326410/-factors-predicting-the-interface-pressure-related-to-pressure-injury-in-intensive-care-unit-patients
#14
Ji Seon Shine, Soo Jin Kim, Ji Hyun Lee, Mi Yu
PURPOSE: Interface pressure is a factor that contributes to the occurrence of pressure injuries. This study aimed to investigate interface pressure at common sites of pressure injury (occipital, gluteal and peritrochanteric areas), to explore the relationships among risk factors, skin condition and interface pressure, and to identify risk factors influencing interface pressure. METHODS: A total of 100 patients admitted to the intensive care unit were enrolled at a tertiary teaching hospital in Korea...
December 2017: Journal of Korean Academy of Nursing
https://www.readbyqxmd.com/read/29326378/the-casper-stent-system-for-carotid-artery-stenosis
#15
Sebastian J Mutzenbach, Katharina Millesi, Cornelia Roesler, Erasmia Broussalis, Slaven Pikija, Johann Sellner, Lukas Machegger, Christoph J Griessenauer, Monika Killer-Oberpfalzer
PURPOSE: To report the results of a retrospective analysis of prospectively collected data evaluating the safety and efficacy of a double layer stent engineered for carotid artery occlusive disease. METHODS: Between January 2014 and February 2017, 138 patients (25.4% women; median age 71 years) underwent Casper stent implantation for carotid artery stenosis. Eligibility criteria included stenosis >70% of vessel diameter (or >50% diameter with ulceration) in symptomatic patients or asymptomatic patients with >80% stenosis at the carotid bifurcation or in the proximal internal carotid artery...
January 11, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29326153/treatment-effect-of-drug-coated-balloons-is-durable-to-3-years-in-the-femoropopliteal-arteries-long-term-results-of-the-in-pact-sfa-randomized-trial
#16
Peter A Schneider, John R Laird, Gunnar Tepe, Marianne Brodmann, Thomas Zeller, Dierk Scheinert, Christopher Metzger, Antonio Micari, Ravish Sachar, Michael R Jaff, Hong Wang, Melissa S Hasenbank, Prakash Krishnan
BACKGROUND: Randomized controlled trials have reported favorable 1-year outcomes with drug-coated balloons (DCBs) for the treatment of symptomatic peripheral arterial disease when compared with standard percutaneous transluminal angioplasty (PTA). Evidence remains limited on the durability of the treatment effect with DCBs in the longer term. METHODS AND RESULTS: IN.PACT SFA is a single-blind, randomized trial (Randomized Trial of IN.PACT Admiral Paclitaxel-Coated Percutaneous Transluminal Angioplasty [PTA] Balloon Catheter vs Standard PTA for the Treatment of Atherosclerotic Lesions in the Superficial Femoral Artery [SFA] and/or Proximal Popliteal Artery [PPA]) that enrolled 331 patients with symptomatic (Rutherford 2-4) femoropopliteal lesions up to 18 cm in length...
January 2018: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29325986/the-challenge-of-rare-diseases
#17
James K Stoller
Rare diseases pose particular challenges to patients who are affected, to the clinicians who care for them, and to the investigators who study their conditions. Though individually uncommon, rare diseases are common in the aggregate, with the ∼7000 described rare diseases affecting 25-30 million Americans. Challenges posed to affected individuals and their families largely regard being diagnosed; receiving optimal care; and affording disease-specific medications. Challenges facing clinicians who care for affected individuals include gaining knowledge and experience in caring for such patients, and the availability of local experts and of expert guidelines...
January 8, 2018: Chest
https://www.readbyqxmd.com/read/29325978/management-of-cardiac-implantable-electronic-devices-in-the-presence-of-left-ventricular-assist-devices
#18
Valay Parikh, Andrew Sauer, Paul Friedman, Seth H Sheldon
Left ventricular assist devices (LVAD) are increasingly utilized in the management of patients with advanced heart failure. Many of these patients have or will be considered for cardiac implantable electronic devices (CIEDs) such as an implantable cardioverter-defibrillator or cardiac resynchronization therapy device. Frequent interplay is often encountered due to complexity of these devices and the underlying disease states. Proactive management strategies and an awareness of interactions may help reduce adverse events...
January 8, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29325832/the-pics-technique-a-novel-approach-for-residual-curvature-correction-during-penile-prosthesis-implantation-in-patients-with-severe-peyronie-s-disease-using-the-collagen-fleece-tachosil
#19
Georgios Hatzichristodoulou
BACKGROUND: Correction of residual curvature during inflatable penile prosthesis (IPP) implantation in patients with Peyronie's disease (PD) by plaque incision and grafting is a common approach. AIM: To present a novel technique for residual curvature correction during IPP implantation using collagen fleece (TachoSil, Baxter Healthcare Corp, Deerfield, IL, USA). METHODS: After the IPP (Titan Touch, Coloplast, Minneapolis, MN, USA) is placed, the implant is inflated maximally...
January 8, 2018: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/29325812/transcatheter-mitral-valve-replacement-in-mitral-annulus-calcification-the-art-of-computer-simulation
#20
Júlia Karády, Ioannis Ntalas, Bernard Prendergast, Christopher Blauth, Steven Niederer, Pál Maurovich-Horvat, Ronak Rajani
There is considerable interest in transcatheter prosthetic valve treatment for mitral valve disease in high-risk individuals. Although the presence of mitral annular calcium (MAC) may provide an anchoring zone for such devices, results to date have been modest with reported technical failure rates approaching 30% in specialist centers. This in part relates to the risk of left ventricular outflow tract obstruction and device dislodgment but also to the lack of specific imaging guidelines to plan for such procedures...
January 4, 2018: Journal of Cardiovascular Computed Tomography
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