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https://www.readbyqxmd.com/read/28535530/mathematical-model-of-potassium-profiling-in-chronic-dialysis
#1
Mauro Ursino, Gabriele Donati
Potassium balance is a difficult task in hemodialysis: low potassium in the dialysate is associated with a high risk of sudden cardiac death, whereas excessive dialysate potassium may provoke insufficient removal and hyperkalemia. A better understanding of the problem can be achieved with the use of mathematical models of solute kinetics. This study is aimed at presenting an improved model of solute kinetics and fluid shifts during hemodialysis. It comprises a 2-compartment (intracellular and extracellular) description of sodium, potassium, and urea, including volume fluid shifts induced by osmotic forces...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/28534967/whole%C3%A2-exome-sequencing-identifies-a-novel-mutation-r367g-in-scn5a-to-be-associated-with-familial-cardiac-conduction-disease
#2
Rong Yu, Xue-Feng Fan, Chan Chen, Zheng-Hua Liu
Cardiac conduction disease is a primary cause of sudden cardiac death. Sodium voltage‑gated channel‑α subunit 5 (SCN5A) mutations have been reported to underlie a variety of inherited arrhythmias. Numerous disease‑causing mutations of SCN5A have been identified in patients with ≥10 different conditions, including type 3 long‑QT syndrome and Brugada syndrome. The present study investigated a family with a history of arrhythmia, with the proband having a history of arrhythmia and syncope. Whole‑exome sequencing was applied in order to detect the disease‑causing mutation in this family, and Sanger sequencing was used to confirm the co‑segregation among the family members...
May 17, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28533990/anomalous-origin-of-right-coronary-artery-originating-from-the-pulmonary-trunk-arcapa-an-incidental-finding-in-a-patient-presenting-with-chest-pain
#3
Pragathi Balakrishna, Michael Illovsky, Youssef M Al-Saghir, Abdul M Minhas
Anomalous origin of the right coronary artery originating from the pulmonary trunk (ARCAPA) is a rare congenital coronary anomaly with an estimated prevalence of 0.002%. Most patients are asymptomatic and the anomaly is detected incidentally during evaluation for other problems. Occasionally, ARCAPA may lead to myocardial ischemia and/or sudden cardiac arrest. We present a case of a 55-year-old female with a history of hypertension who presented to the emergency department with intermittent chest discomfort for three days...
April 17, 2017: Curēus
https://www.readbyqxmd.com/read/28533740/correlation-of-ventricular-arrhythmogenesis-with-neuronal-remodeling-of-cardiac-postganglionic-parasympathetic-neurons-in-the-late-stage-of-heart-failure-after-myocardial-infarction
#4
Dongze Zhang, Huiyin Tu, Chaojun Wang, Liang Cao, Robert L Muelleman, Michael C Wadman, Yu-Long Li
Introduction: Ventricular arrhythmia is a major cause of sudden cardiac death in patients with chronic heart failure (CHF). Our recent study demonstrates that N-type Ca(2+) currents in intracardiac ganglionic neurons are reduced in the late stage of CHF rats. Rat intracardiac ganglia are divided into the atrioventricular ganglion (AVG) and sinoatrial ganglion. Only AVG nerve terminals innervate the ventricular myocardium. In this study, we tested the correlation of electrical remodeling in AVG neurons with ventricular arrhythmogenesis in CHF rats...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28532918/subarachnoid-haemorrhage-in-germany-between-2010-2013-estimated-incidence-rates-based-on-a-nationwide-hospital-discharge-registry
#5
Jasper H van Lieshout, Igor Fischer, Marcel A Kamp, A R T Donders, Jan F Cornelius, Hans-Jakob Steiger, Hieronymus D Boogaarts, Athanasios K Petridis
BACKGROUND: Nordic countries are the primary source for nationwide data on the incidence of subarachnoid haemorrhage (SAH). Reliable estimates of national incidence rates of SAH in other countries are lacking, yet studies from Nordic countries with exceptional incidence rate are sometimes disregarded because of concerns regarding external validity. Autopsies are rarely performed for sudden deaths, therefore estimates of the SAH incidence commonly reflect the hospital discharge rates. Our aim was to estimate the nationwide incidence of non-traumatic SAH in Germany using a national hospital discharge register...
May 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28532779/meta-analysis-of-risk-of-ventricular-arrhythmias-after-improvement-in-left-ventricular-ejection-fraction-during-follow-up-in-patients-with-primary-prevention-implantable-cardioverter-defibrillators
#6
Aiman Smer, Alok Saurav, Muhammad Soubhi Azzouz, Mohsin Salih, Mohamed Ayan, Ahmed Abuzaid, Abhilash Akinapelli, Arun Kanmanthareddy, Lynda E Rosenfeld, Faisal M Merchant, Hussam Abuissa
Implantable cardioverter defibrillators (ICDs) reduce the risk of sudden cardiac death in patients with impaired left ventricular ejection fraction (LVEF). However, there are limited data on the long-term benefit of ICD therapy in patients whose LVEF subsequently improves. We conducted a meta-analysis to evaluate the effect of LVEF improvement on ICD therapy during follow-up. Incidence rate ratios (IRRs) with 95% confidence intervals (CIs) were calculated using random-effects modeling. Sixteen studies with 3,959 patients were included in our analysis...
April 27, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28532588/how-to-prevent-scd-in-the-young
#7
Bo Gregers Winkel, Reza Jabbari, Jacob Tfelt-Hansen
Sudden cardiac death in the young (SCDY) is always a devastating event. The death is sudden and unexpected and often in a person who was thought to be healthy. In recent years our understanding of these tragic events have drastically improved; 10-20years ago we did not know how often SCD occurred in the young, and we had sparse knowledge on the role of inheritance. We have found that SCD corresponds to 7% of all deaths with an overall (highest possible) incidence rate of 2.8 per 100,000 person-years (autopsy rate of sudden death cases of 75%)...
June 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28532587/sudden-cardiac-death-in-inherited-cardiomyopathy
#8
R Collis, P M Elliott
Cardiomyopathy is an important cause of sudden cardiac death particularly in adolescents and young adults. The risk of sudden cardiac death varies between individual cardiomyopathies and is dependent on the severity of disease, age and gender. Although rare in cardiomyopathies, a fundamental aspect of clinical management is a systematic and thorough clinical assessment to identify the small number of individuals who are at risk and who can be protected with prophylactic ICD therapy.
June 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28532586/the-role-of-genetics-in-primary-ventricular-fibrillation-inherited-channelopathies-and-cardiomyopathies
#9
Lia Crotti, Maria-Christina Kotta
Sudden cardiac death (SCD) has a strong familial component; however, our understanding of its genetic basis varies significantly according to the underlying causes. When coronary artery disease is involved, the predisposing genetic background is complex and despite some interesting findings it remains largely unknown. Quite different is the case of monogenic structural and non-structural heart diseases, in which a number of disease-causing genes have been established and are being used in clinical practice...
June 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28532585/genetics-of-sudden-cardiac-death-an-epidemiologic-perspective
#10
Stefan Kääb
Despite a positive family history of SCD being associated with increased risk for SCD in the offspring, the genetic contribution to SCD in general and in proportion to the population at risk is considered to be small. The majority of SCD is rated a common disease with multi allelic susceptibility markers of minor effect size each. A smaller proportion of obvious familial forms of early onset SCD, or SCD in the young on the other hand is clearly linked to genetics. Here frequently, rare genetic variants with strong effects carry the major risk for SCD...
June 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28532584/introduction-ijc-special-issue-on-sudden-cardiac-death
#11
EDITORIAL
Peter J Schwartz, Josef Kautzner, Paolo G Camici
No abstract text is available yet for this article.
June 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28531786/malnutrition-related-deaths
#12
Maja Sparre-Sørensen, Gustav N Kristensen
BACKGROUND AND AIMS: Studies have shown that malnutrition increases the risk of morbidity, mortality, the length of hospital stay, and costs in the elderly population. Approximately one third of all patients admitted to geriatric wards in Denmark are malnourished according to the Danish Geriatric database. The aim of this study is to describe and examine the sudden increase in deaths due to malnutrition in the elderly population in Denmark from 1999 and, similarly, the sudden decline in malnutrition related deaths in 2007...
October 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531360/omega-3-polyunsaturated-fatty-acids-for-cardiovascular-diseases-present-past-and-future
#13
Yasuhiro Watanabe, Ichiro Tatsuno
Large-scale epidemiological studies on Greenlandic, Canadian and Alaskan Eskimos have examined the health benefits of omega-3 fatty acids consumed as part of the diet, and found statistically significant relative reduction in cardiovascular risk in people consuming omega-3 fatty acids. Areas covered: This article reviews studies on omega-3 fatty acids during the last 50 years, and identifies issues relevant to future studies on cardiovascular (CV) risk. Expert Commentary: Although a meta-analysis of large-scale prospective cohort studies and randomized studies reported that fish and fish oil consumption reduced coronary heart disease-related mortality and sudden cardiac death, omega-3 fatty acids have not yet been shown to be effective in secondary prevention trials on patients with multiple cardiovascular disease (CVD) risk factors...
May 20, 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28530823/nanomechanically-visualizing-drug-cell-interaction-at-the-early-stage-of-chemotherapy
#14
Yun-Long Wu, Wilfried Engl, Benhui Hu, Pingqiang Cai, Wan Ru Leow, Nguan Soon Tan, Chwee Teck Lim, Xiaodong Chen
A detailed understanding of chemotherapy is determined by the response of cell to the formation of the drug-target complex and its corresponding sudden or eventual cell death. However, visualization of this early but important process, encompassing the fast dynamics as well as complex network of molecular pathways, remains challenging. Herein, we report that the nanomechanical traction force is sensitive enough to reflect the early cellular response upon the addition of chemotherapeutical molecules in a real-time and non-invasive manner, due to interactions between chemotherapeutic drug and its cytoskeleton targets...
May 22, 2017: ACS Nano
https://www.readbyqxmd.com/read/28526702/t-wave-morphology-restitution-predicts-sudden-cardiac-death-in-patients-with-chronic-heart-failure
#15
Julia Ramírez, Michele Orini, Ana Mincholé, Violeta Monasterio, Iwona Cygankiewicz, Antonio Bayés de Luna, Juan Pablo Martínez, Esther Pueyo, Pablo Laguna
BACKGROUND: Patients with chronic heart failure are at high risk of sudden cardiac death (SCD). Increased dispersion of repolarization restitution has been associated with SCD, and we hypothesize that this should be reflected in the morphology of the T-wave and its variations with heart rate. The aim of this study is to propose an electrocardiogram (ECG)-based index characterizing T-wave morphology restitution (TMR), and to assess its association with SCD risk in a population of chronic heart failure patients...
May 19, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28526597/slow-ventricular-tachycardia-in-a-91-year-old-man-with-implantable-cardioverter-defibrillator-and-acute-respiratory-failure
#16
Nicola Vargas, Loredana Tibullo, Cesare A E Landi, Giovanni Carifi, Emanuela Landi, Elisa Salsano, Francesco Di Grezia, Fiore Candelmo
Slow ventricular tachycardia (VT) in patients with devices such as an implantable cardioverter - defibrillator (ICD) is more common than in the rest of the population. The incidence in elderly patients with an ICD remains largely unknown. In younger patients, slow VT is generally asymptomatic or associated with limited clinical relevance. It may be efficiently and safely terminated by anti-tachycardia pacing. We present a case of slow VT in a 91-year-old man with ICD with type 1 acute respiratory failure and drowsiness...
May 11, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28525585/the-effects-of-gender-on-electrical-therapies-for-the-heart-physiology-epidemiology-and-access-to-therapies-a-report-from-the-xii-congress-of-the-italian-association-on-arrhythmology-and-cardiostimulation-aiac
#17
Giuseppe Boriani, Stefano Lorenzetti, Elisabetta Cerbai, Giuseppe Oreto, Gabriele Bronzetti, Vincenzo Livio Malavasi, Alessandro Biffi, Luigi Padeletti, Gianluca Botto, Igor Diemberger
The difference between men and women is clear even just by looking at an electrocardiogram: females present higher resting heart rate, a shorter QRS complex length and greater corrected QT interval. The development of these differences from pubertal age onward suggests that sexual hormones play a key role, although their effect is far from being completely understood. Different incidences between sexes have been reported for many arrhythmias, both ventricular and supraventricular, and also for sudden cardiac death...
May 19, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28525397/an-unusual-case-of-sudden-death-is-there-a-relationship-between-thyroid-disorders-and-fatal-pulmonary-thromboembolism-a-case-report-and-review-of-literature
#18
Isabella Aquila, Silvia Boca, Fiorella Caputo, Matteo A Sacco, Santo Gratteri, Vittorio Fineschi, Pietrantonio Ricci
In adults, the most common cause of sudden death is coronary heart disease or defects in the cardiac conduction system; however, there are many cases of sudden death occurring from other causes such as fatal pulmonary thromboembolism. Several risk factors are recognized, including hospitalization, surgery, obesity, pregnancy, the use of oral contraceptives, traumatic fractures, and genetic conditions, which cause hypercoagulable states such as factor V Leiden mutations. Although many risk factors have been identified, the mortality rate is still high...
May 19, 2017: American Journal of Forensic Medicine and Pathology
https://www.readbyqxmd.com/read/28523857/arrhythmia-burden-and-related-outcomes-in-eisenmenger-syndrome
#19
Shankar Baskar, Philippa Horne, Samantha Fitzsimmons, Philip R Khoury, Joseph Vettukattill, Koichiro Niwa, Teiji Agaki, Mark Spence, Hisanori Sakazaki, Gruschen Veldtman
BACKGROUND: Patients with Eisenmenger syndrome have a shorter lifespan than the general population. A significant proportion develop arrhythmia and some, sudden death. OBJECTIVE: The aims of this study were to characterize the frequency, type and effects of arrhythmias in adult patients with Eisenmenger's syndrome and to identify risk factors for arrhythmias. METHODS: This retrospective study included patients aged ≥ 18 years of age with Eisenmenger's syndrome from three institutions...
May 19, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28522367/qrs-t-wave-and-calcium-alternans-in-a-type-i-diabetic-mouse-model-for-spontaneous-post-myocardial-infarction-ventricular-tachycardia-a-mechanism-for-the-antiarrhythmic-effect-of-statins
#20
Hongwei Jin, Charles M Welzig, Mark Aronovitz, Farzad Noubary, Robert Blanton, Bo Wang, Mohammad Rajab, Alfred Albano, Mark S Link, Sami F Noujaim, Ho-Jin Park, Jonas B Galper
BACKGROUND: The incidence of sudden arrhythmic death is markedly increased in diabetics. OBJECTIVE: Develop a mouse model for Post MI VT in the diabetic heart and determine the mechanism of an antiarrhythmic effect of statins. METHODS: EKG transmitters were implanted in wild type (WT), placebo and pravastatin treated Type I diabetic Akita mice, MIs induced by coronary ligation, Ca(2+) transients studied by optical mapping, Ca(2+) transients and sparks in left VM (VM) by the Ionoptix system and confocal microscopy...
May 15, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
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