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https://www.readbyqxmd.com/read/29133380/atrial-substrate-and-triggers-of-paroxysmal-atrial-fibrillation-in-patients-with-obstructive-sleep-apnea
#1
Elad Anter, Luigi Di Biase, Fernando M Contreras-Valdes, Carola Gianni, Sanghamitra Mohanty, Cory M Tschabrunn, Juan F Viles-Gonzalez, Eran Leshem, Alfred E Buxton, Guy Kulbak, Rim N Halaby, Peter J Zimetbaum, Jonathan W Waks, Robert J Thomas, Andrea Natale, Mark E Josephson
BACKGROUND: Obstructive sleep apnea (OSA) is associated with atrial remodeling, atrial fibrillation (AF), and increased incidence of arrhythmia recurrence after pulmonary vein (PV) isolation. We aimed to characterize the atrial substrate, including AF triggers in patients with paroxysmal AF and OSA. METHODS AND RESULTS: In 86 patients with paroxysmal AF (43 with ≥moderate OSA [apnea-hypopnea index ≥15] and 43 without OSA [apnea-hypopnea index <5]), right atrial and left atrial voltage distribution, conduction velocities, and electrogram characteristics were analyzed during atrial pacing...
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29109195/sleep-apnea-and-cardiovascular-disease-lessons-from-recent-trials-and-need-for-team-science
#2
REVIEW
Luciano F Drager, R Doug McEvoy, Ferran Barbe, Geraldo Lorenzi-Filho, Susan Redline
Emerging research highlights the complex interrelationships between sleep-disordered breathing and cardiovascular disease, presenting clinical and research opportunities as well as challenges. Patients presenting to cardiology clinics have a high prevalence of obstructive and central sleep apnea associated with Cheyne-Stokes respiration. Multiple mechanisms have been identified by which sleep disturbances adversely affect cardiovascular structure and function. Epidemiological research indicates that obstructive sleep apnea is associated with increases in the incidence and progression of coronary heart disease, heart failure, stroke, and atrial fibrillation...
November 7, 2017: Circulation
https://www.readbyqxmd.com/read/29065964/sleep-apnea-and-nocturnal-cardiac-arrhythmia-understanding-differences-across-ethnicity
#3
Reena Mehra
No abstract text is available yet for this article.
October 18, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29049041/the-impact-of-lifestyle-intervention-on-atrial-fibrillation
#4
Kathryn L Hong, Benedict M Glover
PURPOSE OF REVIEW: Atrial fibrillation is the most common sustained cardiac arrhythmia, attributable to several factors that may be amenable through lifestyle modification. There is emerging evidence to suggest that the successful management of several cardiovascular risk factors [obesity, hypertension (HTN), diabetes mellitus, and obstructive sleep apnea (OSA)] can lead to fewer complications and atrial fibrillation prevention. However, the long-term sustainability and reproducibility of these effects have yet to be explored in larger studies...
October 18, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/29029984/sleep-sleep-apnea-and-atrial-fibrillation-questions-and-answers
#5
REVIEW
Younghoon Kwon, Ryan J Koene, Alan D Johnson, Gen-Min Lin, John D Ferguson
Sleep apnea (SA) is a common sleep disorder increasingly recognized as a risk for cardiovascular disease. Atrial fibrillation (AF) is the most common cardiac arrhythmia and is associated with significant morbidity and mortality. An increasing number of investigations in recent years have linked SA to AF. In this review, we aim to provide a critical overview of the existing evidence in a question and answer format by addressing the following: What is the prevalent association between the two conditions (separating nocturnally detected AF episodes from AF as a prevalent condition)? Is SA a risk factor for incident AF? Is SA a risk factor for recurrence of AF following cardioversion/catheter-based ablation? What is the association between SA and AF in patients with heart failure? Are there signature electrocardiographic markers of AF found in patients with SA? Are there electrophysiology-based studies supporting the link between SA and AF? What other sleep characteristics (beyond SA) are found in patients with AF? What is the impact of SA treatment on AF? What is the effect of AF treatment on sleep? Finally, we address unsolved questions and suggest future directions to enhance our understanding of the AF-SA relationship...
September 4, 2017: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/28992834/prevalence-of-cardiac-arrhythmias-in-asian-patients-with-obstructive-sleep-apnea-a-singapore-sleep-center-experience
#6
Wei Li Neo, Adele C W Ng, Mahalakshmi Rangabashyam, Ying Hao, Kah Leng Ho, Siti Raudha Binte Senin, Song Tar Toh
STUDY OBJECTIVES: Obstructive sleep apnea (OSA) is associated with increased cardiovascular morbidity and mortality. Cardiac arrhythmias are common in patients with OSA. However, the prevalence and significance of cardiac arrhythmias in Asian patients with OSA are not well studied. The aim of this study is to determine the prevalence of cardiac arrhythmias in patients with OSA in Singapore and to evaluate possible factors that may predispose patients with OSA to arrhythmias. METHODS: A retrospective study of 2,019 patients was carried out from January 2011 to December 2012 at a sleep center in a tertiary medical center...
October 4, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28964129/on-the-difference-of-cardiorespiratory-synchronisation-and-coordination
#7
Harald Krause, Jan F Kraemer, Thomas Penzel, Jürgen Kurths, Niels Wessel
Cardiorespiratory phase synchronisation (CRS) is a type of cardiorespiratory coupling that manifests through a prediliction for heart beats to occur at specific points relative to the phase of the respiratory cycle. It has been under investigation for nearly 20 years, and while it seems to be mostly occurring in relaxed states such as deep sleep and anesthesia, no clear clinical implications have been established. Cardiorespiratory coordination (CRC) is a recent development in this field where the relationship between the respiratory onset and heart beat is analysed in the time domain and the possible relationship of each heart beat is considered for both the previous and the next respiratory onset...
September 2017: Chaos
https://www.readbyqxmd.com/read/28955382/atrial-fibrillation-in-heart-failure-a-therapeutic-challenge-of-our-times
#8
REVIEW
Syeda Atiqa Batul, Rakesh Gopinathannair
Atrial fibrillation (AF) and heart failure (HF) are growing cardiovascular disease epidemics worldwide. There has been an exponential increase in the prevalence of AF and HF correlating with an increased burden of cardiac risk factors and improved survival rates in patients with structural heart disease. AF is associated with adverse prognostic outcomes in HF and is most evident in mild-to-moderate left ventricular (LV) dysfunction where the loss of "atrial kick" translates into poorer quality of life and increased mortality...
September 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28853425/obstructive-sleep-apnea-syndrome-osas-and-cardiovascular-system
#9
Carolina Lombardi, Eleonora Tobaldini, Nicola Montano, Anna Losurdo, Gianfranco Parati
There is increasing evidence of a relationship between Obstructive Sleep Apnea (OSA) and cardiovascular diseases. The strong association between OSA and arterial hypertension, in particular in patients with resistant hypertension and/or a non-dipping profile, has been extensively reported. The relationship between OSA and high blood pressure (BP) has been found independent from a number of confounders, but several factors may affect this relationship, including age and sex. It is thus important to better assess pathophysiologic and clinical interactions between OSA and arterial hypertension, also aimed at optimizing treatment approaches in OSA and hypertensive patients with co-morbidities...
August 28, 2017: La Medicina del Lavoro
https://www.readbyqxmd.com/read/28818746/patients-with-atrial-fibrillation-and-coronary-artery-disease-double-trouble
#10
REVIEW
Ewelina Michniewicz, Elżbieta Mlodawska, Paulina Lopatowska, Anna Tomaszuk-Kazberuk, Jolanta Malyszko
Coronary artery disease (CAD) is the most common cardiovascular disease while atrial fibrillation (AF) is the most common cardiac arrhythmia. Both diseases share associated risk factors - hypertension, diabetes mellitus, sleep apnea, obesity and smoking. Moreover, inflammation plays a causative role in both diseases. The prevalence of CAD in patients with AF is from 17% to 46.5% while the prevalence of AF among patients with CAD is low and it is estimated from 0.2% to 5%. AF is a well-established factor of poor short- and long-term prognosis in patients with acute myocardial infarction (AMI) and is associated with a marked increase in overall mortality...
August 14, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28680824/the-effect-of-the-physical-activity-on-polymorphic-premature-ventricular-complexes-in-chronic-kidney-disease
#11
Márcio G Kiuchi, Shaojie Chen
BACKGROUND: Polymorphic premature ventricular complexes (PVCs) are very common, appearing most frequently in patients with hypertension, obesity, sleep apnea, and structural heart disease. Sympathetic hyperactivity plays a critical role in the development, maintenance, and aggravation of ventricular arrhythmias. Endurance exercise training clearly lowers sympathetic activity in sympatho-excitatory disease states and may be tolerated by patients with chronic kidney disease (CKD). METHODS: We assessed 40 CKD patients with hypertension with polymorphic PVCs...
June 2017: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/28668145/modifiable-risk-factors-in-atrial-fibrillation-the-role-of-alcohol-obesity-and-sleep-apnea
#12
REVIEW
Kiran Sidhu, Anthony Tang
Atrial fibrillation (AF) is a common arrhythmia affecting a growing number of Canadians. Traditional risk factors, such as hypertension, diabetes, and valvular disease, are often present in older patients with AF. Modifiable risk factors should also be sought in patients presenting with new-onset AF. Obesity is a rapidly growing epidemic in Canada. Emerging evidence is linking obesity and the often coexistent obstructive sleep apnea with an increased incidence of AF. Alcohol intake can also predispose to the development of AF...
July 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28545542/recognition-and-treatment-of-sleep-disordered-breathing-an-important-component-of-chronic-disease-management
#13
REVIEW
Peter C Farrell, Glenn Richards
Sleep-disordered breathing (SDB) is a highly prevalent condition, and is associated with many debilitating chronic diseases. The role of untreated obstructive sleep apnea (OSA) in arterial hypertension has been recognized in international guidelines. Treatment with continuous positive airway pressure (CPAP) is associated with clinically-relevant reductions in blood pressure. In heart failure (HF), SDB is associated with worse prognosis and increased mortality. Major HF guidelines recommend that patients should be treated for sleep apnea to improve their HF status...
May 25, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28455120/obstructive-sleep-apnea-is-associated-with-increased-qt-corrected-interval-dispersion-the-effects-of-continuous-positive-airway-pressure
#14
Nagihan Bilal, Nursel Dikmen, Fulsen Bozkus, Aylin Sungur, Selman Sarica, Israfil Orhan, Anil Samur
INTRODUCTION: Severe obstructive sleep apnea (OSA) is associated with increased QT corrected interval dispersion (QTcd) and continuous positive airway pressure (CPAP) is thought to improve this arrhythmogenic marker. OBJECTIVE: The aim of the study was to determine the decrease of ratio of cardiovascular risk in patients with obstructive sleep apnea. METHODS: The study included 65 patients with severe OSA who had an apnea-hypopnea index (AHI) score of >30...
March 31, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28449908/association-of-sleep-disordered-breathing-and-disturbed-cardiac-repolarization-in-patients-with-st-segment-elevation-myocardial-infarction
#15
Christoph Fisser, Alina Marcinek, Andrea Hetzenecker, Kurt Debl, Andreas Luchner, Ulrich Sterz, Jörg Priefert, Florian Zeman, Malcolm Kohler, Lars S Maier, Stefan Buchner, Michael Arzt
OBJECTIVE: In patients with ST-segment elevation myocardial infarction (STEMI), disturbed cardiac repolarization before percutaneous coronary intervention (PCI) is a risk factor for malignant ventricular arrhythmia. We tested the hypothesis that sleep-disordered breathing (SDB) in patients with STEMI is associated with disturbed cardiac repolarization. METHODS: Thirty-three patients with STEMI who underwent PCI were prospectively enrolled. To assess cardiac repolarization, the heart-rate corrected interval from the peak of the T wave to the end of the T wave (TpTec) and QTc intervals were assessed with 12-lead electrocardiography before PCI, within 24 h after PCI, and 12 weeks after PCI...
May 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28445539/restless-legs-syndrome-and-cardiovascular-diseases-a-case-control-study
#16
Marion Cholley-Roulleau, Sofiene Chenini, Séverine Béziat, Lily Guiraud, Isabelle Jaussent, Yves Dauvilliers
OBJECTIVE: The association between restless legs syndrome (RLS), cardiovascular diseases (CVD) and hypertension is inconsistent. This case-control study examined i) the association between primary RLS, CVD and hypertension by taking into account many potential confounders and ii) the influence of RLS duration, severity and treatment, sleep and depressive symptoms on CVD and hypertension in primary RLS. METHODS: A standardized questionnaire to assess the RLS phenotype, history of CVD and hypertension, sleep and depressive symptoms, drug intake and demographic/clinical features was sent to the France-Ekbom Patients Association members...
2017: PloS One
https://www.readbyqxmd.com/read/28386925/vagus-nerve-stimulation-surgical-technique-of-implantation-and-revision-and-related-morbidity
#17
REVIEW
Flavio Giordano, Anna Zicca, Carmen Barba, Renzo Guerrini, Lorenzo Genitori
Indications for vagus nerve stimulation (VNS) therapy include focal, multifocal epilepsy, drop attacks (tonic/atonic seizures), Lennox-Gastaut syndrome, tuberous sclerosis complex (TSC)-related multifocal epilepsy, and unsuccessful resective surgery. Surgical outcome is about 50-60% for seizures control, and may also improve mood, cognition, and memory. On this basis, VNS has also been proposed for the treatment of major depression and Alzheimer's' disease. The vagus nerve stimulator must be implanted with blunt technique on the left side to avoid cardiac side effects through the classic approach for anterior cervical discectomy...
April 2017: Epilepsia
https://www.readbyqxmd.com/read/28318659/cardiovascular-and-general-health-status-of-adults-with-trisomy-21
#18
Samuel A Hayes, Shelby Kutty, Joshua Thomas, Joyce T Johnson, Anji T Yetman
BACKGROUND: Patients with Trisomy 21 are now living well into adulthood. Little data exists to assist the cardiologist in the care of these patients. We sought to examine the cardiac and general health status of adults with Trisomy 21 undergoing cardiac evaluation. METHODS & RESULTS: A retrospective review of all affected adults >21years followed at 2 tertiary care institutions was performed. Of 193 patients identified, median age was 31 (range 21.1-60.5) years...
March 10, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28289401/sleep-disorders-is-the-trigemino-cardiac-reflex-a-missing-link
#19
REVIEW
Tumul Chowdhury, Barkha Bindu, Gyaninder Pal Singh, Bernhard Schaller
Trigeminal innervated areas in face, nasolacrimal, and nasal mucosa can produce a wide array of cardiorespiratory manifestations that include apnea, bradypnea, bradycardia, hypotension, and arrhythmias. This reflex is a well-known entity called "trigemino-cardiac reflex" (TCR). The role of TCR is investigated in various pathophysiological conditions especially in neurosurgical, but also skull base surgery procedures. Additionally, its significance in various sleep-related disorders has also been highlighted recently...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28243782/pulmonary-hypertension-and-echocardiogram-parameters-in-obstructive-sleep-apnea
#20
H T Wong, K H Chee, A W Chong
Obstructive sleep apnea (OSA) is a growing health hazard in the United States and worldwide. OSA is now recognized as a disorder with systemic manifestations and its association with obesity and adverse cardiovascular consequences. There is increasing evidence that OSA may be associated with systemic hypertension and an increased incidence of stroke, heart failure, myocardial infarction, and arrhythmias. Less information is available about the association between OSA and pulmonary hypertension (PH). We therefore conduct this study to look at the prevalence of the pulmonary hypertension in obstructive sleep apnea patient and to identify risk factors leading to pulmonary hypertension among OSA patient...
June 2017: European Archives of Oto-rhino-laryngology
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