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https://www.readbyqxmd.com/read/28542926/effect-of-spironolactone-on-exercise-tolerance-and-arterial-function-in-older-adults-with-heart-failure-with-preserved-ejection-fraction
#1
Bharathi Upadhya, William G Hundley, Peter H Brubaker, Timothy M Morgan, Kathryn P Stewart, Dalane W Kitzman
OBJECTIVES: To evaluate the effects of an aldosterone antagonist on exercise intolerance in older adults with heart failure and preserved ejection fraction (HFpEF). DESIGN: Randomized, placebo-controlled, double-blind trial. SETTING: Academic medical center, Winston-Salem, North Carolina. PARTICIPANTS: Older adults (N = 80, aged 71 ± 1; 80% female) with stable compensated HFpEF and controlled blood pressure (BP)...
May 19, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28540527/alignment-of-inducible-vascular-progenitor-cells-on-a-micro-bundle-scaffold-improves-cardiac-repair-following-myocardial-infarction
#2
Anurag Jamaiyar, Weiguo Wan, Vahagn Ohanyan, Molly Enrick, Danielle Janota, Devan Cumpston, Hokyung Song, Kelly Stevanov, Christopher L Kolz, Tatev Hakobyan, Feng Dong, Bi-Min Zhang Newby, William M Chilian, Liya Yin
Ischemic heart disease is still the leading cause of death even with the advancement of pharmaceutical therapies and surgical procedures. Early vascularization in the ischemic heart is critical for a better outcome. Although stem cell therapy has great potential for cardiovascular regeneration, the ideal cell type and delivery method of cells have not been resolved. We tested a new approach of stem cell therapy by delivery of induced vascular progenitor cells (iVPCs) grown on polymer micro-bundle scaffolds in a rat model of myocardial infarction...
July 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28534047/polysomnographic-heart-rate-variability-indices-and-atrial-ectopy-associated-with-incident-atrial-fibrillation-risk-in-older-community-dwelling-men
#3
Dileep Raman, Farhad Kaffashi, Li-Yung Lui, William H Sauer, Susan Redline, Peter Stone, Peggy M Cawthon, Katie L Stone, Kristine E Ensrud, Sonia Ancoli-Israel, Kenneth Loparo, Reena Mehra
BACKGROUND: Autonomic dysfunction contributes to atrial fibrillation (AF). OBJECTIVE: We hypothesized that polysomnogram (PSG)-based heart rate variability (HRV) autonomic function biomarkers are associated with incident AF and these associations are modified by measures of sleep disordered breathing (SDB). METHODS: 2350 participants of a multi-center prospective study (Outcomes of Sleep Disorders in Older Men Study) without baseline AF underwent sleep studies with incident adjudicated AF follow up (8...
May 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/28532693/a-prospective-national-survey-of-coronary-ct-angiography-radiation-doses-in-the-united-kingdom
#4
Isabel A Castellano, Edward D Nicol, Russell K Bull, Carl A Roobottom, Michelle C Williams, Stephen P Harden
BACKGROUND: Little real-world radiation dose data exist for the majority of cardiovascular CT. Some data have been published for coronary CT angiography (coronary CTA) specifically, but they invariably arise from high-volume centres with access to the most recent technology. OBJECTIVE: The aim of this study was to document real-world radiation doses for coronary CTA in the United Kingdom, and to establish their relationship to clinical protocol selection, acquisition heart rate, and scanner technology...
May 8, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28516313/dynamic-changes-in-aortic-impedance-after-transcatheter-aortic-valve-replacement-and-its-impact-on-exploratory-outcome
#5
Yukari Kobayashi, Juyong B Kim, Kegan J Moneghetti, Yuhei Kobayashi, Ran Zhang, Daniel A Brenner, Ryan O'Malley, Ingela Schnittger, Michael Fischbein, D Craig Miller, Alan C Yeung, David Liang, Francois Haddad, William F Fearon
Valvulo-arterial impedance (Zva) has been shown to predict worse outcome in medically managed aortic stenosis (AS) patients. We aimed to investigate the association between Zva and left ventricular (LV) adaptation and to explore the predictive value of Zva for cardiac functional recovery and outcome after transcatheter aortic valve replacement (TAVR). We prospectively enrolled 128 patients with AS who underwent TAVR. Zva was calculated as: (systolic blood pressure + mean transaortic gradient)/stroke volume index)...
May 17, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28512592/the-relationship-between-body-mass-index-and-the-severity-of-coronary-artery-disease-in-patients-referred-for-coronary-angiography
#6
Anne B Gregory, Kendra K Lester, Deborah M Gregory, Laurie K Twells, William K Midodzi, Neil J Pearce
Background and Aim. Obesity is associated with an increased risk of cardiovascular disease and may be associated with more severe coronary artery disease (CAD); however, the relationship between body mass index [BMI (kg/m(2))] and CAD severity is uncertain and debatable. The aim of this study was to examine the relationship between BMI and angiographic severity of CAD. Methods. Duke Jeopardy Score (DJS), a prognostic tool predictive of 1-year mortality in CAD, was assigned to angiographic data of patients ≥18 years of age (N = 8,079)...
2017: Cardiology Research and Practice
https://www.readbyqxmd.com/read/28506913/predicting-determinants-of-atrial-fibrillation-or-flutter-for-therapy-elucidation-in-patients-at-risk-for-thromboembolic-events-predate-af-study
#7
Javed M Nasir, William Pomeroy, Adam Marler, Matthew Hann, Tina Baykaner, Ronald Jones, Richard Stoll, Katherine Hursey, Angela Meadows, Jennifer Walker, Steve Kindsvater
BACKGROUND: Atrial fibrillation (AF) is the most common clinically significant cardiac rhythm disorder. There is considerable interest in screening for AF, as it is a leading cause of stroke, and oral anticoagulants (OACs) have been shown to significantly reduce the risk of stroke in patients with AF. Improved screening for AF with subsequent treatment may help improve long-term outcomes, but the optimal patient population and screening intensity are unknown. OBJECTIVES: In this study, we prospectively evaluated the use of the CHA2DS2-VASc score for the prediction of new-onset AF using insertable cardiac monitors (ICMs) and examined whether this screening led to the initiation of OAC therapy...
May 12, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28504408/kv1-3-channels-facilitate-the-connection-between-metabolism-and-blood-flow-in-the-heart
#8
REVIEW
Vahagn Ohanyan, Liya Yin, Raffi Bardakjian, Christopher Kolz, Molly Enrick, Tatevik Hakobyan, Jordan Luli, Kathleen Graham, Mohamed Khayata, Suzanna Logan, John Kmetz, William M Chilian
The connection between metabolism and flow in the heart, metabolic dilation, is essential for cardiac function. We recently found redox-sensitive Kv1.5 channels play a role in coronary metabolic dilation; however, more than one ion channel likely plays a role in this process as animals null for these channels still showed limited coronary metabolic dilation. Accordingly, we examined the role of another Kv1 family channel, the energetically linked Kv1.3 channel, in coronary metabolic dilation. We measured myocardial blood flow (contrast echocardiography) during norepinephrine-induced increases in cardiac work (heart rate x mean arterial pressure) in WT, WT mice given correolide (preferential Kv1...
May 2017: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/28504239/sustained-safety-and-clinical-performance-of-a-drug-eluting-absorbable-metal-scaffold-up-to-24-months-pooled-outcomes-of-biosolve-ii-and-biosolve-iii
#9
Michael Haude, Hüseyin Ince, Stephan Kische, Alexandre Abizaid, Ralph Tölg, Pedro Alves Lemos, Nicolas M Van Mieghem, Stefan Verheye, Clemens von Birgelen, Evald Høj Christiansen, William Wijns, Hector M Garcia-Garcia, Ron Waksman
AIMS: We aimed to assess the safety and performance of the DREAMS 2G scaffold up to 24 months post implant. METHODS AND RESULTS: The present study population comprises a total of 184 patients with 189 lesions who were enrolled in the prospective, multicentre BIOSOLVE-II and BIOSOLVE-III trials. Clinical follow-up was scheduled at one, six, 12, 24 and 36 months. The present report includes pooled follow-up data at six months and BIOSOLVE-II data at 24 months. Patients were 65...
May 16, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28501797/predictors-of-procedural-complications-in-adult-fontan-patients-undergoing-non-cardiac-procedures
#10
Alexander C Egbe, Arooj R Khan, Naser M Ammash, David W Barbara, William C Oliver, Sameh M Said, Emmanuel Akintoye, Carole A Warnes, Heidi M Connolly
OBJECTIVE: Limited data exist regarding the outcomes of non-cardiac procedures (NCPs) in adult patients after Fontan operations (Fontan patients). METHODS: To compare procedural outcomes after NCPs in Fontan patients with outcomes for two matched control groups: patients with repaired congenital heart disease and biventricular circulation (CHD-BiV) and patients with no heart disease (NHD). We defined cyanosis as oxygen saturation <90% and procedural hypoxia as saturation <80% or a decrease in saturation >10% from baseline...
May 13, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28496093/prediction-of-new-onset-and-recurrent-atrial-fibrillation-by-complete-blood-count-tests-a-comprehensive-systematic-review-with-meta-analysis
#11
Alexander Weymann, Sadeq Ali-Hasan-Al-Saegh, Anton Sabashnikov, Aron-Frederik Popov, Seyed Jalil Mirhosseini, Tong Liu, Mohammadreza Lotfaliani, Michel Pompeu Barros de Oliveira Sá, William L L Baker, Senol Yavuz, Mohamed Zeriouh, Jae-Sik Jang, Hamidreza Dehghan, Lei Meng, Luca Testa, Fabrizio D'Ascenzo, Umberto Benedetto, Gary Tse, Luis Nombela-Franco, Pascal M Dohmen, Abhishek J Deshmukh, Cecilia Linde, Giuseppe Biondi-Zoccai, Gregg W Stone, Hugh Calkins, Integrated Meta-Analysis Of Cardiac Surgery And Cardiology-Group Imcsc-Group
BACKGROUND Atrial fibrillation (AF) is one of the most critical and frequent arrhythmias precipitating morbidities and mortalities. The complete blood count (CBC) test is an important blood test in clinical practice and is routinely used in the workup of cardiovascular diseases. This systematic review with meta-analysis aimed to determine the strength of evidence for evaluating the association of hematological parameters in the CBC test with new-onset and recurrent AF. MATERIAL AND METHODS We conducted a meta-analysis of observational studies evaluating hematologic parameters in patients with new-onset AF and recurrent AF...
May 12, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28472418/increased-passive-stiffness-promotes-diastolic-dysfunction-despite-improved-ca2-handling-during-left-ventricular-concentric-hypertrophy
#12
Åsmund T Røe, Jan Magnus Aronsen, Kristine Skårdal, Nazha Hamdani, Wolfgang A Linke, Håvard E Danielsen, Ole M Sejersted, Ivar Sjaastad, William E Louch
Aims: Concentric hypertrophy following pressure-overload is linked to preserved systolic function but impaired diastolic function, and is an important substrate for heart failure with preserved ejection fraction. While increased passive stiffness of the myocardium is a suggested mechanism underlying diastolic dysfunction in these hearts, the contribution of a ctive diastolic Ca 2+ cycling in cardiomyocytes remains unclear. In this study, we sought to dissect contributions of passive and active mechanisms to diastolic dysfunction in the concentrically hypertrophied heart following pressure-overload...
May 4, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28469494/studying-dyadic-structure-function-relationships-a-review-of-current-modeling-approaches-and-new-insights-into-ca-2-mis-handling
#13
Mary M Maleckar, Andrew G Edwards, William E Louch, Glenn T Lines
Excitation-contraction coupling in cardiac myocytes requires calcium influx through L-type calcium channels in the sarcolemma, which gates calcium release through sarcoplasmic reticulum ryanodine receptors in a process known as calcium-induced calcium release, producing a myoplasmic calcium transient and enabling cardiomyocyte contraction. The spatio-temporal dynamics of calcium release, buffering, and reuptake into the sarcoplasmic reticulum play a central role in excitation-contraction coupling in both normal and diseased cardiac myocytes...
2017: Clinical Medicine Insights. Cardiology
https://www.readbyqxmd.com/read/28456700/respect-the-septal-perforator-septal-artery-perforation-during-cto-pci-resulting-in-massive-interventricular-septal%C3%A2-hematoma-and-biventricular-cardiac-obstructive-shock
#14
Tiberio M Frisoli, Majed Afana, Sagger Mawri, Mazen Hadid, Luay Sayed, William W O'Neill, Sachin Parikh, Dee Dee Wang, Akshay Khandelwal, Khaldoon Alaswad
No abstract text is available yet for this article.
April 21, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28454730/2017-acc-aha-hfsa-ishlt-acp-advanced-training-statement-on-advanced-heart-failure-and-transplant-cardiology-revision-of-the-accf-aha-acp-hfsa-ishlt-2010-clinical-competence-statement-on-management-of-patients-with-advanced-heart-failure-and-cardiac-transplant
#15
Mariell Jessup, Mark H Drazner, Wendy Book, Joseph C Cleveland, Ira Dauber, Susan Farkas, Mahazarin Ginwalla, Jason N Katz, Peggy Kirkwood, Michelle M Kittleson, Joseph E Marine, Paul Mather, Alanna A Morris, Donna M Polk, Antoine Sakr, Kelly H Schlendorf, Esther E Vorovich, Eric S Williams, Jonathan L Halperin, Jesse E Adams, James A Arrighi, Eric H Awtry, Eric R Bates, John E Brush, Lori Daniels, Susan Fernandes, Rosario Freeman, Sadiya S Khan, Joseph E Marine, John A McPherson, Lisa A Mendes, Thomas Ryan, Chittur A Sivaram, Robert L Spicer, Andrew Wang, Howard H Weitz
No abstract text is available yet for this article.
April 25, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28444847/complement-dependence-of-murine-costimulatory-blockade-resistant-cellular-cardiac-allograft-rejection
#16
Nicholas Chun, Robert L Fairchild, Yansui Li, Jinhua Liu, Ming Zhang, William M Baldwin, Peter S Heeger
Building upon studies showing that ischemia/reperfusion-(IR)-injury is complement-dependent, we tested links among complement activation, transplant associated ischemia-reperfusion injury, and murine cardiac allograft rejection. We transplanted BALB/c hearts subjected to 8h cold ischemic storage (CIS) into CTLA4Ig-treated WT or c3(-/-) B6 recipients. Whereas allografts subjected to 8h CIS rejected in WT recipients with a median survival time (MST) of 37d, identically treated hearts survived >60d in c3(-/-) mice (p<0...
April 26, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28442153/reducing-stroke-during-cardiac-surgery-back-flushing-and-manipulation-is-for-plumbers-not-surgeons
#17
EDITORIAL
William M DeCampli
No abstract text is available yet for this article.
April 4, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28431249/macrophages-facilitate-electrical-conduction-in-the-heart
#18
Maarten Hulsmans, Sebastian Clauss, Ling Xiao, Aaron D Aguirre, Kevin R King, Alan Hanley, William J Hucker, Eike M Wülfers, Gunnar Seemann, Gabriel Courties, Yoshiko Iwamoto, Yuan Sun, Andrej J Savol, Hendrik B Sager, Kory J Lavine, Gregory A Fishbein, Diane E Capen, Nicolas Da Silva, Lucile Miquerol, Hiroko Wakimoto, Christine E Seidman, Jonathan G Seidman, Ruslan I Sadreyev, Kamila Naxerova, Richard N Mitchell, Dennis Brown, Peter Libby, Ralph Weissleder, Filip K Swirski, Peter Kohl, Claudio Vinegoni, David J Milan, Patrick T Ellinor, Matthias Nahrendorf
Organ-specific functions of tissue-resident macrophages in the steady-state heart are unknown. Here, we show that cardiac macrophages facilitate electrical conduction through the distal atrioventricular node, where conducting cells densely intersperse with elongated macrophages expressing connexin 43. When coupled to spontaneously beating cardiomyocytes via connexin-43-containing gap junctions, cardiac macrophages have a negative resting membrane potential and depolarize in synchrony with cardiomyocytes. Conversely, macrophages render the resting membrane potential of cardiomyocytes more positive and, according to computational modeling, accelerate their repolarization...
April 20, 2017: Cell
https://www.readbyqxmd.com/read/28419573/impella-2-5-initiated-prior-to-unprotected-left-main-pci-in-acute-myocardial-infarction-complicated-by-cardiogenic-shock-improves-early-survival
#19
Perwaiz M Meraj, Rajkumar Doshi, Theodore Schreiber, Brijeshwar Maini, William W O'Neill
OBJECTIVES: To assess post-procedural outcomes when Impella 2.5 percutaneous left ventricular assist device (pLVAD) support is initiated either prior to or after percutaneous coronary intervention (PCI) on unprotected left main coronary artery (ULMCA) culprit lesion in the context of acute myocardial infarction cardiogenic shock (AMICS). BACKGROUND: Initiation of Impella 2.5 pLVAD prior to PCI is associated with significant survival benefit in the setting of AMICS...
April 17, 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/28418520/rapid-rule-out-of-acute-myocardial-infarction-with-a-single-high-sensitivity-cardiac-troponin-t-measurement-below-the-limit-of-detection-a-collaborative-meta-analysis
#20
John W Pickering, Martin P Than, Louise Cullen, Sally Aldous, Ewoud Ter Avest, Richard Body, Edward W Carlton, Paul Collinson, Anne Marie Dupuy, Ulf Ekelund, Kai M Eggers, Christopher M Florkowski, Yonathan Freund, Peter George, Steve Goodacre, Jaimi H Greenslade, Allan S Jaffe, Sarah J Lord, Arash Mokhtari, Christian Mueller, Andrew Munro, Sebbane Mustapha, William Parsonage, W Frank Peacock, Christopher Pemberton, A Mark Richards, Juan Sanchis, Lukas P Staub, Richard Troughton, Raphael Twerenbold, Karin Wildi, Joanna Young
Background: High-sensitivity assays for cardiac troponin T (hs-cTnT) are sometimes used to rapidly rule out acute myocardial infarction (AMI). Purpose: To estimate the ability of a single hs-cTnT concentration below the limit of detection (<0.005 µg/L) and a nonischemic electrocardiogram (ECG) to rule out AMI in adults presenting to the emergency department (ED) with chest pain. Data Sources: EMBASE and MEDLINE without language restrictions (1 January 2008 to 14 December 2016)...
May 16, 2017: Annals of Internal Medicine
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