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Cardiac screening

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https://www.readbyqxmd.com/read/29144742/successful-identification-of-cardiac-troponin-calcium-sensitizers-using-a-combination-of-virtual-screening-and-roc-analysis-of-known-troponin-c-binders
#1
Melanie L Aprahamian, Svetlana B Tikunova, Morgan V Price, Andres F Cuesta, Jonathan P Davis, Steffen Lindert
Calcium-dependent cardiac muscle contraction is regulated by the protein complex troponin. Calcium binds to the N-terminal domain of troponin C (cNTnC) which initiates the process of contraction. Heart failure is a consequence of a disruption of this process. With the prevalence of this condition, a strong need exists to find novel compounds to increase the calcium sensitivity of cNTnC. Desirable are small chemical molecules that bind to the interface between cTnC and the cTnI switch peptide and exhibit calcium sensitizing properties by possibly stabilizing cTnC in an open conformation...
November 16, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/29143170/circumferential-strain-acquired-by-cmr-early-after-acute-myocardial-infarction-adds-incremental-predictive-value-to-late-gadolinium-enhancement-imaging-to-predict-late-myocardial-remodeling-and-subsequent-risk-of-sudden-cardiac-death
#2
Anthony A Holmes, Jorge Romero, Jeffrey M Levsky, Linda B Haramati, Newton Phuong, Leila Rezai-Gharai, Stuart Cohen, Lina Restrepo, Luis Ruiz-Guerrero, John D Fisher, Cynthia C Taub, Luigi Di Biase, Mario J Garcia
PURPOSE: Late adverse myocardial remodeling after acute myocardial infarction (AMI) is strongly associated with sudden cardiac death (SCD). Cardiac magnetic resonance (CMR) performed early after AMI can predict late remodeling and SCD risk with moderate accuracy. This study assessed the ability of CMR-measured circumferential strain (CS) to add incremental predictive information to late gadolinium enhancement (LGE). METHODS: Patients with an AMI and LVEF < 50% were screened for inclusion...
November 15, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29142787/sleep-apnea-symptoms-and-cardiovascular-disease-risks-among-haitian-medical-students
#3
Diana M Rosenthal, Donaldson F Conserve, Dodley Severe, Michaele A Gedeon, Ferdinand Zizi, Georges Casimir, Samy I McFarlane, Girardin Jean Louis
Sleep apnea is a prevalent sleep disorder that disproportionately affects blacks and has been previously studied among Caribbean-born blacks in Brooklyn, New York, but there has been negligible research in the Caribbean, specifically Haiti, and developing countries on this pressing health issue. A total of 373 medical students (mean age=20.6 years ± 2.3 years) from a medical school in Haiti participated in this study. Participants were administered a questionnaire assessing their sleep health and cardiovascular outcomes...
April 2017: Journal of Sleep Disorders & Therapy
https://www.readbyqxmd.com/read/29141175/sudden-cardiac-arrest-during-participation-in-competitive-sports
#4
Cameron H Landry, Katherine S Allan, Kim A Connelly, Kris Cunningham, Laurie J Morrison, Paul Dorian
BACKGROUND: The incidence of sudden cardiac arrest during participation in sports activities remains unknown. Preparticipation screening programs aimed at preventing sudden cardiac arrest during sports activities are thought to be able to identify at-risk athletes; however, the efficacy of these programs remains controversial. We sought to identify all sudden cardiac arrests that occurred during participation in sports activities within a specific region of Canada and to determine their causes...
November 16, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/29138828/identification-of-risk-genes-associated-with-myocardial-infarction-based-on-the-recursive-feature-elimination-algorithm-and-support-vector-machine-classifier
#5
Xiaoqiang Yang
The aim of the present study was to identify risk genes in myocardial infarction. Microarray data GSE34198, containing data from the peripheral blood of 49 myocardial infarction samples and 48 corresponding control samples, were downloaded from the Gene Expression Omnibus database to screen the differentially expressed genes (DEGs). The DEGs were used to construct a protein‑protein interaction (PPI) network of patient samples, from which the feature genes were identified using the neighboring score method...
November 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29137577/postoperative-troponin-measurement-as-a-screening-tool-for-adverse-cardiac-events-in-adult-patients-undergoing-moderate-or-major-non-cardiac-surgery
#6
D Coric, N A Smith
Elevated troponin levels within three days of surgery are strongly linked to major adverse cardiac events (MACE). However, the value of screening with troponin measurements is controversial. The extent to which this is done in routine practice is uncertain. We examined the medical records of all patients ≥45 years of age undergoing moderate or major non-cardiac surgery in our tertiary referral hospital over a six-month period. We determined how many patients had a troponin (TnT) measurement recorded in the first three days postoperatively, how many of these were abnormal, and the occurrence of MACE within 30 days...
November 2017: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/29137068/carnitine-acylcarnitine-translocase-deficiency-with-c-199-10-t-g-and-novel-c-1a-g-mutation-two-case-reports-and-brief-literature-review
#7
Hui-Ming Yan, Hao Hu, Aisha Ahmed, Bing-Bing Feng, Jing Liu, Zheng-Jun Jia, Hua Wang
RATIONALE: Carnitine-acylcarnitine translocate deficiency (CACTD) is a rare and life-threatening, autosomal recessive disorder of fatty acid β-oxidation characterized by hypoketotic hypoglycemia, hyperammonemia, cardiomyopathy, liver dysfunction, and muscle weakness; culminating in early death. To date, CACTD cases screened from the Chinese mainland population, especially patient with compound heterozygote with c.199-10T>G and a novel c.1A>G mutation in the SLC25A20 gene has never been described...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29136331/risk-factor-management-in-a-contemporary-australian-population-at-increased-cardiovascular-disease-risk
#8
D J Campbell, J M Coller, F F Gong, M McGrady, D L Prior, U Boffa, L Shiel, D Liew, R Wolfe, A J Owen, H Krum, C M Reid
BACKGROUND: Effective management of cardiovascular and chronic kidney disease risk factors offers longer, healthier lives and savings in health care. We examined risk factor management in participants of the SCReening Evaluation of the Evolution of New Heart Failure (SCREEN-HF) study, a self-selected population at increased cardiovascular disease risk recruited from members of a health insurance fund in Melbourne and Shepparton, Australia. METHODS: Inclusion criteria were age ≥60 years with one or more of self-reported ischaemic or other heart disease, irregular or rapid heart rhythm, cerebrovascular disease, renal impairment, or treatment for hypertension or diabetes for ≥2 years...
November 14, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/29135622/troponin-limit-of-detection-plus-cardiac-risk-stratification-scores-to-rule-out-acute-myocardial-infarction-and-30-day-major-adverse-cardiac-events-in-ed-patients
#9
Mitchell D Datlow, Kelly M Gray, Adriel Watts, Deborah B Diercks, Bryn E Mumma
When screening for acute myocardial infarction (AMI), troponin levels below the 99th percentile, including those below the limit of detection (LOD), are considered normal. We hypothesized that a low-risk HEART score (0-3) or ACS Pretest Probability Assessment <2% plus a single troponin below the LOD would rule out both AMI and 30-day major adverse cardiac events (MACE). We studied all patients who presented to a single academic emergency department and received a troponin I (Siemens Ultra Troponin I) from September 1, 2013, to November 13, 2013 (n=888)...
December 2017: Critical Pathways in Cardiology
https://www.readbyqxmd.com/read/29133921/metabolomics-identifies-metabolite-biomarkers-associated-with-acute-rejection-after-heart-transplantation-in-rats
#10
Feng Lin, Yi Ou, Chuan-Zhong Huang, Sheng-Zhe Lin, Yun-Bin Ye
The aim of this study was to identify metabolite biomarkers associated with acute rejection after heart transplantation in rats using a LC-MS-based metabolomics approach. A model of heterotopic cardiac xenotransplantation was established in rats, with Wistar rats as donors and SD rats as recipients. Blood and cardiac samples were collected from blank control rats (Group A), rats 5 (Group B) and 7 days (Group C) after heart transplantation, and pretreated rats 5 (Group D) and 7 days (Group E) post-transplantation for pathological and metabolomics analyses...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29132927/whole-exome-sequencing-identified-a-pathogenic-mutation-in-ryr2-in-a-chinese-family-with-unexplained-sudden-death
#11
Yubi Lin, Siqi He, Zili Liao, Ruiling Feng, Ruilin Liu, Yongzheng Peng, Nan Yu, Hang Qi, Jia Chen, Zifeng Huang, Heping Lei, Yang Liu, Fang Rao, Chunyu Deng, Yumei Xue, Guolin Zhang, Bin Zhang, Hua Yao, Shulin Wu
OBJECTIVE: This study aimed to identify the pathogenic mutation in a Chinese family with unexplained sudden death (USD) or occasional syncope. MATERIALS AND METHODS: Whole exome sequencing and target capture sequencing were respectively conducted for two related patients. The genetic data was screened using the 1000 genomes project and SNP database (PubMed), and the identified mutations were assessed for predicted pathogenicity using the SIFT and Polyphen-2 algorithms...
October 10, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29132782/midterm-outcomes-after-postoperative-delirium-on-cognition-and-mood-in-patients-after-cardiac-surgery
#12
Quyen Nguyen, Kelsey Uminski, Brett M Hiebert, Navdeep Tangri, Rakesh C Arora
OBJECTIVE: Delirium is a common neurologic complication after cardiac surgery. Our primary objective was to determine the impact of delirium on self-reported problems with midterm cognitive functioning and mood postcardiac surgery. METHODS: A single-center, prospective cohort study was conducted, enrolling 197 patients undergoing coronary artery bypass grafting or valve replacement. Baseline cognition and mood were assessed preoperatively in elective patients as a part of routine care using the Montreal Cognitive Assessment and Patient Health Questionnaire 9, respectively...
October 20, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29129562/preoperative-use-of-oral-beta-adrenergic-blocking-agents-and-the-incidence-of-new-onset-atrial-fibrillation-after-cardiac-surgery-a-systematic-review-and-meta-analysis
#13
REVIEW
Paul Min Thein, Kyle White, Khyati Banker, Carole Lunny, Sam Mirzaee, Arthur Nasis
BACKGROUND: Current epidemiological data suggests that postoperative atrial fibrillation or atrial flutter (POAF) causes significant morbidity and mortality after cardiac surgery. The literature for prophylactic management of POAF is limited, resulting in the lack of clear guidelines on management recommendations. AIM: To examine the efficacy of prophylactic rate control agents in reducing the incidence of new-onset POAF in patients undergoing elective cardiac surgery...
October 19, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29129255/regional-variation-in-quality-of-life-in-patients-with-a-fontan-circulation-a-multinational-perspective
#14
Nicholas D Fogleman, Silke Apers, Philip Moons, Stacey Morrison, Samuel G Wittekind, Martha Tomlin, Kathy Gosney, Maayke A Sluman, Bengt Johansson, Junko Enomoto, Mikael Dellborg, Chun-Wei Lu, Raghavan Subramanyan, Koen Luyckx, Werner Budts, Jamie Jackson, Adrienne Kovacs, Alexandra Soufi, Katrine Eriksen, Corina Thomet, Malin Berghammer, Edward Callus, Susan M Fernandes, Maryanne Caruana, Stephen C Cook, Andrew S Mackie, Kamila S White, Paul Khairy, Shelby Kutty, Gruschen Veldtman
BACKGROUND: Impaired quality of life (QOL) is associated with congenital heart disease (CHD) and country of residence; however, few studies have compared QOL in patients with differing complexities of CHD across regional populations. The current study examined regional variation in QOL outcomes in a large multinational sample of patients with a Fontan relative to patients with atrial septal defects (ASDs) and ventricular septal defects (VSDs). METHODS: From the Assessment of Patterns of Patient-Reported Outcomes in Adults with Congenital Heart disease-International Study (APPROACH-IS), 405 patients (163 Fontan and 242 ASD/VSD) across Asia, Europe, and North America provided consent for access to their medical records and completed a survey evaluating QOL (0 to 100 linear analog scale)...
November 2017: American Heart Journal
https://www.readbyqxmd.com/read/29128504/biophysical-comparison-of-sodium-currents-in-native-cardiac-myocytes-and-human-induced-pluripotent-stem-cell-derived-cardiomyocytes
#15
Robert J Goodrow, Suveer Desai, Jacqueline A Treat, Brian K Panama, Mayurika Desai, Vladislav V Nesterenko, Jonathan M Cordeiro
INTRODUCTION: Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) are used for safety pharmacology and to investigate genetic diseases affecting cardiac ion channels. It is unclear whether adult myocytes or hiPSC-CMs are the better platform for cardiac safety pharmacology. We examined the biophysical and molecular properties of INa in adult myocytes and hiPSC-CMs. METHODS: hiPSC-CMs were plated at low density. Atrial and ventricular cells were obtained from dog hearts...
November 8, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/29127877/breast-arterial-calcification-on-screening-mammography-can-predict-significant-coronary-artery-disease-in-women
#16
Brendan S Kelly, Emer ScanlON, Helen Heneghan, Ciaran E Redmond, Gerard M Healy, Enda Mc Dermott, Eric J Heffernan, Ruth Prichard, Sorcha Mc Nally
INTRODUCTION: Breast Arterial Calcification (BAC) on digital mammography has been associated with an increased risk of Coronary Artery Disease (CAD). We aimed to investigate the association of BAC with findings on Coronary Computed Tomography Angiography (CCTA) within a cohort of women from the national breast screening program. METHODS: Symptomatic women (chest pain) aged between 50 and 65 who underwent a CCTA and who also had a screening mammography between 2014 and 2015 were recorded...
November 3, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29126769/cardiovascular-complications-in-head-neck-microvascular-flap-reconstruction-a-retrospective-risk-stratification-and-outcomes-assessment
#17
Naseem Ghazali, Steven Caldroney, Donita Dyalram, Joshua E Lubek
BACKGROUND: To determine the incidence and predictors of cardiac complications (CC) in head & neck microvascular flap reconstruction. METHODS: A series of 216 microvascular flaps performed between 2012 and 2015 were analyzed using the Revised Cardiac Risk Index (CRCI) and the Charlson Comorbidity Index (CCI). Multivariate regression analysis was undertaken for predictive factors of outcomes. RESULTS: Twenty patients developed CC (9.7%) with transient cardiac arrhythmia (6...
October 12, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29126717/2013-acr-eular-systemic-sclerosis-classification-criteria-in-patients-with-associated-pulmonary-arterial-hypertension
#18
Beatriz E Joven, Pilar Escribano, Jose Luis Andreu, Estibaliz Loza, Carmen Jimenez, M Jesus Garcia de Yebenes, M Jose Ruiz-Cano, Loreto Carmona, Patricia E Carreira
OBJECTIVE: To analyze the performance of the 1980 ACR and new 2013 ACR/EULAR criteria for systemic sclerosis (SSc) in cutaneous SSc (lcSSc) patients, especially those affected by lcSSc and pulmonary arterial hypertension (PAH). METHODS: All patients with a clinical lcSSc diagnosis from a prospective observational SSc cohort were included. Sociodemographic and disease-related variables were collected, and PAH confirmed by right heart catheterization (RHC). Performance of the 2013 and 1980 SSc criteria was analyzed in terms of clinical diagnosis...
October 13, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/29125229/observational-review-of-paediatric-intraosseous-needle-placement-in-the-paediatric-emergency-department
#19
Elysha L Pifko, Amanda Price, Carrie Busch, Curren Smith, Yunyun Jiang, Joseph Dobson, Rachel Tuuri
AIM: Intraosseous (IO) access is a life-saving option during resuscitations in the paediatric emergency department (PED). This study aimed to compare success rates and time to placement for Manual IO versus EZ-IO needles in PED patients ≤8 and >8 kg. METHODS: This was a retrospective cross-sectional descriptive study of IO use in a single-centre tertiary PED from 2006 to 2014. Cases were identified through diagnosis codes for IO infusion, cardiopulmonary resuscitation and cardiac arrest and admissions to the intensive care unit...
November 10, 2017: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/29124685/mitochondrial-trifunctional-protein-deficiency-severe-cardiomyopathy-and-cardiac-transplantation
#20
C Bursle, R Weintraub, C Ward, R Justo, J Cardinal, D Coman
We describe mitochondrial trifunctional protein deficiency (MTPD) in two male siblings who presented with severe cardiomyopathy in infancy. The first sibling presented in severe cardiac failure at 6 months of age and succumbed soon after. The second sibling came to attention after newborn screening identified a possible fatty acid oxidation defect. Dietary therapy and carnitine supplementation commenced in the neonatal period. Despite this the second child required cardiac transplantation at 3 years of age after a sudden and rapid decline in cardiac function...
November 10, 2017: JIMD Reports
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