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The heart in cystic fibrosis

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https://www.readbyqxmd.com/read/28314540/technological-advances-shed-light-on-left-ventricular-cardiac-disturbances-in-cystic-fibrosis
#1
REVIEW
Zahra N Sayyid, Zachary M Sellers
Cystic fibrosis (CF), the most common autosomal recessive lethal disease in Caucasians, causes chronic pulmonary disease and can lead to cor pulmonale with right ventricular dysfunction. The presence of the cystic fibrosis transmembrane conductance regulator (CFTR) in cardiac myocardia has prompted debate regarding possible defective ion channel-induced cardiomyopathy. Clinical heart disease in CF is considered rare and is restricted to case reports. It has been unclear if this is due to the lack of physiological importance of CFTR in the heart, the relatively short lifespan of those with CF, or a technical inability to detect subclinical disease...
March 14, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28247443/acute-kidney-injury-in-patients-treated-with-iv-beta-lactam-beta-lactamase-inhibitor-combinations
#2
W Cliff Rutter, David S Burgess
STUDY OBJECTIVE: Increased acute kidney injury (AKI) incidence has been reported in patients receiving piperacillin-tazobactam (PTZ) therapy compared to other beta-lactams. This study sought to determine if the addition of beta-lactamase inhibitors impact AKI incidence by comparing patients treated with PTZ or ampicillin-sulbactam (SAM). DESIGN: Retrospective cohort study. SETTING: Large academic tertiary care hospital. PATIENTS: Overall, 2,448 patients received PTZ (n=1,836) or SAM (n=612) for at least 48 hours between September 1, 2007 and September 30, 2015...
March 1, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28188010/the-1-min-sit-to-stand-test-in-cystic-fibrosis-insights-into-cardiorespiratory-responses
#3
Thomas Radtke, Helge Hebestreit, Milo A Puhan, Susi Kriemler
BACKGROUND: We aimed to characterize the cardiopulmonary response during a 1-min sit-to-stand (STS) test and compare peak exercise cardiorespiratory variables to a maximal cardiopulmonary exercise test (CPET) in cystic fibrosis (CF). We further aimed to assess the validity of the STS power index (PowerSTS) as a measure of exercise capacity. METHODS: Fifteen adult CF patients performed spirometry, CPET and the 1-min STS test with respiratory gas analysis. RESULTS: Peak-exercise cardiorespiratory variables during the 1-min STS test correlated strongly (r=0...
February 7, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28131631/ryanodine-receptor-modification-and-regulation-by-intracellular-ca-2-and-mg-2-in-healthy-and-failing-human-hearts
#4
K Walweel, P Molenaar, M S Imtiaz, A Denniss, C Dos Remedios, D F van Helden, A F Dulhunty, D R Laver, N A Beard
RATIONALE: Heart failure is a multimodal disorder, of which disrupted Ca(2+) homeostasis is a hallmark. Central to Ca(2+) homeostasis is the major cardiac Ca(2+) release channel - the ryanodine receptor (RyR2) - whose activity is influenced by associated proteins, covalent modification and by Ca(2+) and Mg(2+). That RyR2 is remodelled and its function disturbed in heart failure is well recognized, but poorly understood. OBJECTIVE: To assess Ca(2+) and Mg(2+) regulation of RyR2 from left ventricles of healthy, cystic fibrosis and failing hearts, and to correlate these functional changes with RyR2 modifications and remodelling...
March 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28125022/pediatric-exercise-testing-value-and-implications-of-peak-oxygen-uptake
#5
REVIEW
Paolo T Pianosi, Robert I Liem, Robert G McMurray, Frank J Cerny, Bareket Falk, Han C G Kemper
Peak oxygen uptake (peak V ˙ O 2 ) measured by clinical exercise testing is the benchmark for aerobic fitness. Aerobic fitness, estimated from maximal treadmill exercise, is a predictor of mortality in adults. Peak V ˙ O 2 was shown to predict longevity in patients aged 7-35 years with cystic fibrosis over 25 years ago. A surge of exercise studies in young adults with congenital heart disease over the past decade has revealed significant prognostic information. Three years ago, the first clinical trial in children with pulmonary arterial hypertension used peak V ˙ O 2 as an endpoint that likewise delivered clinically relevant data...
January 24, 2017: Children
https://www.readbyqxmd.com/read/28100601/the-use-of-selective-fungal-culture-media-increases-detection-rates-of-fungi-in-the-cystic-fibrosis-respiratory-tract
#6
Gina Hong, Heather B Miller, Sarah Allgood, Richard Lee, Noah Lechtzin, Sean X Zhang
The prevalence of fungi in the respiratory tract of cystic fibrosis (CF) patients has risen. However, fungal surveillance is not routinely performed in most clinical centers in the United States, which may lead to an underestimation of the true prevalence of the problem. We conducted a prospective study comparing fungal detection rates for clinically important fungi (CIF) defined as Aspergillus species, Scedosporium species, Trichosporon species, and Exophiala dermatitidis in CF sputum using standard bacterial culture media and selective-fungal culture media, including Sabouraud dextrose agar with gentamicin (SDA), inhibitory mold agar (IMA), and brain-heart infusion agar (BHI) with chloramphenicol and gentamicin...
January 18, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28018696/alagille-syndrome-a-case-report-highlighting-dysmorphic-facies-chronic-illness-and-depression
#7
James J Bresnahan, Zachary A Winthrop, Rabia Salman, Salman Majeed
Alagille syndrome is a rare multisystem disorder affecting the liver, heart, vertebrae, eyes, and face. Alagille syndrome shares multiple phenotypic variants of other congenital or chronic childhood illnesses such as DiGeorge syndrome, Down syndrome, spina bifida, type 1 diabetes mellitus, and cystic fibrosis. All of these chronic illnesses have well-established links to psychiatric conditions. There are few community resources for Alagille patients, as it is an extremely rare condition. Despite the overlap with other chronic childhood illnesses, the psychiatric manifestations of Alagille syndrome have not been previously discussed in literature...
2016: Case Reports in Psychiatry
https://www.readbyqxmd.com/read/27904687/high-fructose-causes-cardiac-hypertrophy-via-mitochondrial-signaling-pathway
#8
Yan-Bo Zhang, Yan-Hai Meng, Shuo Chang, Rong-Yuan Zhang, Chen Shi
High fructose diet can cause cardiac hypertrophy and oxidative stress is a key mediator for myocardial hypertrophy. Disruption of cystic fibrosis transmembrane conductance regulator (CFTR) leads to oxidative stress. This study aims to reveal mitochondrial oxidative stress-related signaling pathway in high fructose-induced cardiac hypertrophy. Mice were fed high fructose to develop cardiac hypertrophy. Fructose and H2O2 were used to induce cardiomyocyte hypertrophy in vitro. Mitochondria-targeted antioxidant SkQ1 was applied to investigate the possible role of mitochondrial reactive oxygen species (ROS)...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27899540/the-1-minute-sit-to-stand-test-in-adults-with-cystic-fibrosis-correlations-with-cardiopulmonary-exercise-test-6-minute-walk-test-and-quadriceps-strength
#9
Mathieu Gruet, Leonardo Alexandre Peyré-Tartaruga, Laurent Mely, Jean-Marc Vallier
BACKGROUND: Exercise testing is part of the regular assessment of patients with cystic fibrosis (CF). We aimed to evaluate (1) the convergent validity of the 1-min sit-to-stand (STS) test in CF by investigating its relationships with peak oxygen uptake (peak V̇O2 ), quadriceps strength, and quality of life and (2) to compare these associations with those of the 6-min walk test (6MWT). METHODS: Twenty-five adults with CF (FEV1 = 59 ± 24%) performed the STS test, the 6MWT, quadriceps strength assessment, and cardiopulmonary exercise test (CPET)...
December 2016: Respiratory Care
https://www.readbyqxmd.com/read/27880745/announcement-national-family-history-day-november-24-2016
#10
(no author information available yet)
In 2004, the U.S. Surgeon General declared that Thanksgiving would be National Family History Day, a day designed to encourage American families to learn about and create a written record of their family health history. Family history can identify those persons with a higher-than-average risk for many common diseases, such as heart disease, cancer, and type 2 diabetes. Having at least one first-degree relative with a disease can increase a person's risk twofold or more (1). Family history is also a determinant of less common diseases like sickle cell disease and cystic fibrosis (1)...
November 25, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27780555/relation-of-left-atrial-size-to-atrial-fibrillation-in-patients-aged-%C3%A2-22%C3%A2-years
#11
Douglas Y Mah, Divya Shakti, Kimberlee Gauvreau, Steven D Colan, Mark E Alexander, Dominic J Abrams, David W Brown
Left atrial (LA) dilation has been shown to be associated with atrial fibrillation (AF) in the adult population, with some studies indicating that larger LAs are more prone to AF recurrence. The relation of LA size to AF in the pediatric and young adult population has not been investigated. In this study, all pediatric patients (aged ≤22 years) who presented to Boston Children's Hospital from January 2002 to December 2012 with AF were reviewed. Patients with significant congenital heart disease, cardiomyopathies, proven channelopathies, previous cardiac surgery, end-stage renal disease, or severe lung disease/cystic fibrosis were excluded...
January 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/27692149/physiological-responses-during-exercise-with-video-games-in-patients-with-cystic-fibrosis-a-systematic-review
#12
Raquel Pinto Carbonera, Fernanda Maria Vendrusculo, Márcio Vinícius Fagundes Donadio
BACKGROUND: Interactive video games are recently being used as an exercise tool in cystic fibrosis (CF). This study aimed to assess the literature describing whether video games generate a physiological response similar to the exercise intensity needed for training in CF. METHODS: An online search in PubMed, Embase, Cochrane, SciELO, LILACS and PEDro databases was conducted and original studies describing physiological responses of the use of video games as exercise in CF were included...
October 2016: Respiratory Medicine
https://www.readbyqxmd.com/read/27678488/health-related-quality-of-life-of-young-people-with-long-term-illnesses-before-and-after-transfer-from-child-to-adult-healthcare
#13
A E While, E Heery, A M Sheehan, I Coyne
BACKGROUND: The numbers of children with long-term illnesses surviving into adulthood and transferring from child to adult services has increased dramatically in the last 30 years. This study aimed to examine health-related quality of life pre- and post-transfer from child to adult healthcare for young people with three long-term illnesses. METHODS: A total of 217 young people with cystic fibrosis, congenital heart defects or diabetes attending child and adult hospital services in Dublin, Ireland completed a questionnaire survey...
January 2017: Child: Care, Health and Development
https://www.readbyqxmd.com/read/27578468/heart-involvement-in-cystic-fibrosis-a-specific-cystic-fibrosis-related-myocardial-changes
#14
REVIEW
Fabien Labombarda, Eric Saloux, Jacques Brouard, Emmanuel Bergot, Paul Milliez
Cystic fibrosis is a complex multi-systemic chronic disease characterized by progressive organ dysfunction with development of fibrosis, possibly affecting the heart. Over the last four decades pathological, experimental, and clinical evidence points towards the existence of a specific myocardial involvement in cystic fibrosis. Multi-modality cardiac imaging, especially recent echocardiographic techniques, evidenced diastolic and/or systolic ventricular dysfunction in cystic fibrosis leading to the concept of a cystic fibrosis-related cardiomyopathy...
September 2016: Respiratory Medicine
https://www.readbyqxmd.com/read/27551814/ultrashort-echo-time-magnetic-resonance-imaging-is-a-sensitive-method-for-the-evaluation-of-early-cystic-fibrosis-lung-disease
#15
David J Roach, Yannick Crémillieux, Robert J Fleck, Alan S Brody, Suraj D Serai, Rhonda D Szczesniak, Stephanie Kerlakian, John P Clancy, Jason C Woods
RATIONALE: Recent advancements that have been made in magnetic resonance imaging (MRI) improve our ability to assess pulmonary structure and function in patients with cystic fibrosis (CF). A nonionizing imaging modality that can be used as a serial monitoring tool throughout life can positively affect patient care and outcomes. OBJECTIVES: To compare an ultrashort echo-time MRI method with computed tomography (CT) as a biomarker of lung structure abnormalities in young children with early CF lung disease...
November 2016: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/27492519/observational-study-of-lung-transplant-recipients-surviving-20-years
#16
Sasiharan Sithamparanathan, Logan Thirugnanasothy, Stephen Clark, John H Dark, Andrew J Fisher, Kate F Gould, Asif Hasan, James L Lordan, Gerard Meachery, Gareth Parry, Paul A Corris
BACKGROUND: Lung transplant recipients have reduced long-term survival compared with other solid organ recipients. There is a lack of published data on the characteristics of very long term survivors. METHODS: We describe the demographics, clinical history and post-procedure function of all lung transplant recipients who have survived greater than 20 years at our centre. RESULTS: At the time of analysis there were 21 (16.4%) of 128 patients who survived over 20 years...
August 2016: Respiratory Medicine
https://www.readbyqxmd.com/read/27492388/feasibility-tolerability-and-safety-of-pediatric-hyperpolarized-129-xe-magnetic-resonance-imaging-in-healthy-volunteers-and-children-with-cystic-fibrosis
#17
Laura L Walkup, Robert P Thomen, Teckla G Akinyi, Erin Watters, Kai Ruppert, John P Clancy, Jason C Woods, Zackary I Cleveland
BACKGROUND: Hyperpolarized (129)Xe is a promising contrast agent for MRI of pediatric lung function, but its safety and tolerability in children have not been rigorously assessed. OBJECTIVE: To assess the feasibility, safety and tolerability of hyperpolarized (129)Xe gas as an inhaled contrast agent for pediatric pulmonary MRI in healthy control subjects and in children with cystic fibrosis. MATERIALS AND METHODS: Seventeen healthy control subjects (ages 6-15 years, 11 boys) and 11 children with cystic fibrosis (ages 8-16 years, 4 boys) underwent (129)Xe MRI, receiving up to three doses of (129)Xe gas prepared by either a commercially available or a homebuilt (129)Xe polarizer...
November 2016: Pediatric Radiology
https://www.readbyqxmd.com/read/27475230/cardiac-dysfunction-in-pkd1-deficient-mice-with-phenotype-rescue-by-galectin-3-knockout
#18
Bruno E Balbo, Andressa G Amaral, Jonathan M Fonseca, Isac de Castro, Vera M Salemi, Leandro E Souza, Fernando Dos Santos, Maria C Irigoyen, Feng Qian, Roger Chammas, Luiz F Onuchic
Alterations in myocardial wall texture stand out among ADPKD cardiovascular manifestations in hypertensive and normotensive patients. To elucidate their pathogenesis, we analyzed the cardiac phenotype in Pkd1(cond/cond)Nestin(cre) (CYG+) cystic mice exposed to increased blood pressure, at 5 to 6 and 20 to 24 weeks of age, and Pkd1(+/-) (HTG+) noncystic mice at 5-6 and 10-13 weeks. Echocardiographic analyses revealed decreased myocardial deformation and systolic function in CYG+ and HTG+ mice, as well as diastolic dysfunction in older CYG+ mice, compared to their Pkd1(cond/cond) and Pkd1(+/+) controls...
September 2016: Kidney International
https://www.readbyqxmd.com/read/27469016/lung-transplantation-and-gender-effects-on-survival-of-recipients-with-cystic-fibrosis
#19
Deepa Raghavan, Ang Gao, Chul Ahn, Vaidehi Kaza, James Finklea, Fernando Torres, Raksha Jain
BACKGROUND: The overall life expectancy of women with cystic fibrosis (CF) is shorter compared with men with CF without accounting for lung transplant recipients. However, it is unclear how donor and recipient gender impact long-term outcomes in patients with CF who undergo lung transplantation. The purpose of this study was to determine if the gender disadvantage seen in women with CF before transplant continues to exist after lung transplant and if this is impacted by donor gender. METHODS: Patients with CF entered in the International Society for Heart and Lung Transplantation registry who were at least 18 years old and received a lung transplant between January 2000 and December 2012 were included and divided into groups based on donor-recipient gender combinations...
December 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27454104/enzyme-replacement-therapy-for-anderson-fabry-disease
#20
REVIEW
Regina El Dib, Huda Gomaa, Raíssa Pierri Carvalho, Samira E Camargo, Rodrigo Bazan, Pasqual Barretti, Fellype C Barreto
BACKGROUND: Anderson-Fabry disease is an X-linked defect of glycosphingolipid metabolism. Progressive renal insufficiency is a major source of morbidity, additional complications result from cardio- and cerebro-vascular involvement. Survival is reduced among affected males and symptomatic female carriers.This is an update of a Cochrane review first published in 2010, and previously updated in 2013. OBJECTIVES: To evaluate the effectiveness and safety of enzyme replacement therapy compared to other interventions, placebo or no interventions, for treating Anderson-Fabry disease...
July 25, 2016: Cochrane Database of Systematic Reviews
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