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Dysrhythmia

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https://www.readbyqxmd.com/read/28330804/cardiac-arrest-attributable-to-dysfunction-of-the-autonomic-nervous-system-after-traumatic-cervical-spinal-cord-injury
#1
Sei Won Kim, Chan Joo Park, Kyungil Kim, Yoon-Chung Kim
Bradycardia is the most common form of dysrhythmia developing after disruption of the sympathetic pathway by a spinal cord injury (SCI), and it can have fatal consequences, including cardiac arrest. Here, we report a case of cardiac arrest developing after cervical SCI attributable to sympathetic hypoactivity. A 26-year-old male pedestrian was admitted after a traffic accident. Radiologically, fractures were apparent at the C6-7 bilateral articular facets, and cord contusion with hemorrhage was evident at C4-7...
February 24, 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28325177/equine-cardiovascular-therapeutics
#2
REVIEW
Meg M Sleeper
Heart disease can be defined as any abnormality of the heart whether it is a cardiac dysrhythmia or structural heart disease, either congenital or acquired. Heart failure occurs when a cardiac abnormality results in the inability of the heart to pump enough blood to meet the body's needs. Heart disease can be present without leading to heart failure. Heart failure, however, is a consequence of heart disease. There are 4 main areas where the clinician can intervene to improve cardiac output with heart failure: preload, afterload, myocardial contractility, and heart rate...
April 2017: Veterinary Clinics of North America. Equine Practice
https://www.readbyqxmd.com/read/28316843/anesthetic-considerations-in-a-patient-with-myotonic-dystrophy-for-hip-labral-repair
#3
Ramon Go, David Wang, Danielle Ludwin
Myotonic Dystrophy (DM) affects multiple organ systems. Disorders such as hyperthyroidism, progressive musculoskeletal weakness, cardiac dysrhythmias, hypoventilation, and cognitive-behavioral disorders may be present in these patients. Thorough preoperative assessment and anesthetic planning are required to minimize the risk of anesthetic complications. Patients with DM can exhibit exquisite sensitivity to sedatives, neuromuscular blocking agents, and volatile anesthetics, resulting in potential postoperative complications...
2017: Case Reports in Anesthesiology
https://www.readbyqxmd.com/read/28299614/lamin-a-c-cardiomyopathies-current-understanding-and-novel-treatment-strategies
#4
REVIEW
Xi Wang, Allyson Zabell, Wonshill Koh, W H Wilson Tang
Dilated cardiomyopathy (DCM) is the third leading cause of heart failure in the USA. A major gene associated with DCM with cardiac conduction system disease is lamin A/C (LMNA) gene. Lamins are type V filaments that serve a variety of roles, including nuclear structure support, DNA repair, cell signaling pathway mediation, and chromatin organization. In 1999, LMNA was found responsible for Emery-Dreifuss muscular dystrophy (EDMD) and, since then, has been found in association with a wide spectrum of diseases termed laminopathies, including LMNA cardiomyopathy...
March 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28286854/recurrent-syncope-following-substance-abuse-a-case-report
#5
Forod Salehi, Mohammad Mehdi Hassanzadeh Taheri, HamidReza Riasi, Omid Mehrpour
Drug abuse is considered as the most common poisoning in the world. Stimulants agent especially amphetamines and methamphetamines are among important abused substances. Different types of neurologic, psychiatric, respiratory, gastrointestinal, and cardiogenic complications have been reported to be related to methamphetamine consumption. Some of these substances could cause dysrhythmias which is the most prevalent etiology of cardiogenic syncope. Ecstasy, as one of the most commonly abused drugs, is known as a cause of cardiac dysrhythmias...
2017: Emergency (Tehran, Iran)
https://www.readbyqxmd.com/read/28267896/treatment-of-supraventricular-tachycardia-in-a-horse
#6
Dorothy D Whelchel, Brett S Tennent-Brown, Amanda E Coleman, Gregg S Rapoport, Uriel Blas-Machado, Herbert W Maisenbacher, Brenton C Credille, Steeve Giguère
OBJECTIVE: To describe the treatment of persistent supraventricular tachycardia (SVT) in a young horse in endurance training. CASE SUMMARY: A 6-year-old Arab gelding in endurance training presented for a dysrhythmia and decreased performance. SVT was diagnosed and conversion to a normal sinus rhythm was achieved following administration of a constant rate infusion of amiodarone. However, reversion to SVT occurred shortly after initiation of ridden exercise. A second attempt to convert the dysrhythmia with amiodarone failed, but normal sinus rhythm was achieved with transvenous electrical cardioversion (TVEC)...
March 7, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28217719/effects-of-epinephrine-on-inflammation-related-gene-expressions-in-cultured-rat-cardiomyocytes
#7
Stacey Chen, Geoffrey L Liu, Marilyn M Li, Renyu Liu, Henry Liu
Epinephrine, a non-specific adrenergic agonist, is one of the most commonly used inotropes perioperatively. Recent studies have shown that inflammatory response in cardiac surgery could result in hypoperfusion, dysrhythmias, myocardial ischemia, and other pathophysiological alterations in the postoperative period. These alterations might be contributing to the adverse clinical outcome. Although epinephrine has been shown to have effects on the immune system, how epinephrine affects inflammatory response is unclear...
2017: Translational Perioperative and Pain Medicine
https://www.readbyqxmd.com/read/28217089/differential-modulation-of-rhythmic-brain-activity-in-healthy-adults-by-a-t-type-calcium-channel-blocker-an-meg-study
#8
Kerry D Walton, Emeline L Maillet, John Garcia, Timothy Cardozo, Isaac Galatzer-Levy, Rodolfo R Llinás
1-octanol is a therapeutic candidate for disorders involving the abnormal activation of the T-type calcium current since it blocks this current specifically. Such disorders include essential tremor and a group of neurological and psychiatric disorders resulting from thalamocortical dysrhythmia (TCD). For example, clinically, the observable phenotype in essential tremor is the tremor itself. The differential diagnostic of TCD is not based only on clinical signs and symptoms. Rather, TCD incorporates an electromagnetic biomarker, the presence of abnormal thalamocortical low frequency brain oscillations...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28213666/patterns-of-abnormal-gastric-pacemaking-after-sleeve-gastrectomy-defined-by-laparoscopic-high-resolution-electrical-mapping
#9
Rachel Berry, Leo K Cheng, Peng Du, Niranchan Paskaranandavadivel, Timothy R Angeli, Terence Mayne, Grant Beban, Gregory O'Grady
BACKGROUND: Laparoscopic sleeve gastrectomy (LSG) is increasingly being applied to treat obesity. LSG includes excision of the normal gastric pacemaker, which could induce electrical dysrhythmias impacting on post-operative symptoms and recovery, but these implications have not been adequately investigated. This study aimed to define the effects of LSG on gastric slow-wave pacemaking using laparoscopic high-resolution (HR) electrical mapping. METHODS: Laparoscopic HR mapping was performed before and after LSG using flexible printed circuit arrays (64-96 electrodes; 8-12 cm(2); n = 8 patients) deployed through a 12 mm trocar and positioned on the gastric serosa...
February 17, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28213374/diurnal-differences-in-risk-of-cardiac-arrhythmias-during-spontaneous-hypoglycemia-in-young-people-with-type-1-diabetes
#10
Peter Novodvorsky, Alan Bernjak, Elaine Chow, Ahmed Iqbal, Lianne Sellors, Scott Williams, Robert A Fawdry, Bhavin Parekh, Richard M Jacques, Jefferson L B Marques, Paul J Sheridan, Simon R Heller
OBJECTIVE: Hypoglycemia may exert proarrhythmogenic effects on the heart via sympathoadrenal stimulation and hypokalemia. Hypoglycemia-induced cardiac dysrhythmias are linked to the "dead-in-bed syndrome," a rare, but devastating, condition. We examined the effect of nocturnal and daytime clinical hypoglycemia on electrocardiogram (ECG) in young people with type 1 diabetes. RESEARCH DESIGN AND METHODS: Thirty-seven individuals with type 1 diabetes underwent 96 h of simultaneous ambulatory ECG and blinded continuous interstitial glucose monitoring (CGM) while symptomatic hypoglycemia was recorded...
February 17, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28193103/is-telemetry-monitoring-useful-in-patients-admitted-with-suspected-acute-coronary-syndrome
#11
Jack Perkins, Naveen K Voore, Jaideep Patel, Sathish Sanna, Edana Mann, Sammy Zakaria, Aysegul Gozu
Patients with a chief complaint of chest pain are frequently monitored by telemetry for evaluation of acute coronary syndrome (ACS). However, there is insufficient evidence to support this practice in younger patients without coronary artery disease (CAD). The objective is to assess outcomes of patients younger than 50 years of age and monitored by telemetry. Consecutive medical records of patients admitted for chest pain between January 1, 2009, and June 30, 2010, were reviewed. Patients were excluded who had a CAD history, an abnormal initial troponin, or an abnormal initial electrocardiogram...
February 1, 2017: American Journal of Medical Quality: the Official Journal of the American College of Medical Quality
https://www.readbyqxmd.com/read/28182035/cardiac-emergencies-in-neonates-and-young-infants
#12
REVIEW
Nasib Kabbani, Mohamed S Kabbani, Hayan Al Taweel
Cardiac emergencies in children are not infrequent. Early recognition and management are essential to save life and prevent any comorbidity. The presentation of cardiac emergencies and etiologies is variable depending on the age of child at the time of presentation and type of cardiac lesion. Cyanotic and noncyanotic congenital heart diseases are the main causes in neonates and infants. Acquired heart diseases and dysrhythmia are more common causes for cardiac emergencies in toddler and childhood. In this review, we discuss the most common causes for cardiac emergencies in neonates and young infants highlighting important points in the presentation and management that are essential for early recognition and timely management of infants presenting with these conditions...
January 2017: Avicenna Journal of Medicine
https://www.readbyqxmd.com/read/28180011/the-challenges-of-living-with-an-implantable-cardioverter-defibrillator-a-qualitative-study
#13
Mohammad Abbasi, Reza Negarandeh, Reza Norouzadeh, Amir Reza Shojae Mogadam
BACKGROUND: Dysrhythmia is one of the most common causes of sudden cardiac death worldwide. An implantable cardioverter defibrillator is the most effective method of treatment for dysrhythmias causing cardiac arrest. However, living with an implantable cardioverter defibrillator is associated with challenges such as fear, anxiety, and depression. OBJECTIVES: The purpose of this study was to identify the challenges of living with an implantable cardioverter defibrillator...
October 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28178375/melatonin-restores-hippocampal-neural-precursor-proliferation-and-prevents-cognitive-deficits-induced-by-jet-lag-simulation-in-adult-mice
#14
Deetje Iggena, York Winter, Barbara Steiner
Frequent flyers and shift workers undergo circadian dysrhythmia with adverse impact on body and mind. The circadian rhythm disorder "jet lag" disturbs hippocampal neurogenesis and spatial cognition, which represent morphological and functional adult brain plasticity. This raises the question if pro-neurogenic stimuli might prevent those consequences. However, suitable measures to mitigate jet lag induced adverse effects on brain plasticity have been neglected so far. Here, we used adult C57Bl6 mice to investigate the pro-neurogenic stimuli melatonin (8mg/kg i...
February 8, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28163260/central-and-peripheral-effects-of-transcutaneous-acupuncture-treatment-for-nausea-in-patients-with-diabetic-gastroparesis
#15
Irene Sarosiek, Gengqing Song, Yan Sun, Hugo Sandoval, Stephen Sands, Jiande Chen, Richard W McCallum
Background/Aims: Nausea, an unpleasant symptom of diabetic gastroparesis (DMGP), has been reported to be alleviated by needleless transcutaneous electrical acupuncture (TEA). Our study was designed to utilize electroencephalography (EEG) and electrogastrography (EGG) recordings to investigate the central and peripheral responses of TEA in the treatment of nausea in DMGP patients. Methods: Eleven DMGP subjects underwent simultaneous EEG and EGG testing while grading the severity of nausea following 30-minute intervals of: (1) baseline, (2) visual stimulation (VS) to provoke more nausea, (3) active VS together with TEA, and (4) TEA alone, and a final 15-minute recording without any intervention...
February 5, 2017: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/28159815/validation-of-the-prognostic-utility-of-the-electrocardiogram-for-acute-drug-overdose
#16
Alex F Manini, Ajith P Nair, Rajesh Vedanthan, David Vlahov, Robert S Hoffman
BACKGROUND: While it is certain that some emergency department patients with acute drug overdose suffer adverse cardiovascular events (ACVE), predicting ACVE is difficult. The prognostic utility of the ECG for heterogeneous drug overdose patients remains to be proven. This study was undertaken to validate previously derived features of the initial ECG associated with ACVE in this population. METHODS AND RESULTS: We performed a prospective validation cohort study to evaluate adult emergency department patients with acute drug overdose at 2 urban university hospitals over 5 years in whom an emergency department admission ECG was performed...
February 3, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28144037/automated-analysis-of-connected-speech-reveals-early-biomarkers-of-parkinson-s-disease-in-patients-with-rapid-eye-movement-sleep-behaviour-disorder
#17
Jan Hlavnička, Roman Čmejla, Tereza Tykalová, Karel Šonka, Evžen Růžička, Jan Rusz
For generations, the evaluation of speech abnormalities in neurodegenerative disorders such as Parkinson's disease (PD) has been limited to perceptual tests or user-controlled laboratory analysis based upon rather small samples of human vocalizations. Our study introduces a fully automated method that yields significant features related to respiratory deficits, dysphonia, imprecise articulation and dysrhythmia from acoustic microphone data of natural connected speech for predicting early and distinctive patterns of neurodegeneration...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28138196/superior-septal-approach-versus-left-atrial-approach-for-mitral-valve-replacement-a-retrospective-cohort-study
#18
Tooba Ansar, Taimur Asif Ali, Saneeha Shahid, Saulat Hasnain Fatimi, Ghulam Murtaza
OBJECTIVE: To compare the outcomes of superior septal approach and left atrial approach for mitral valve replacement. METHODS: This retrospective cohort study was conducted at the Aga Khan University Hospital, Karachi, and comprised records of patients who had undergone isolated mitral valve replacement from May 2003 to April 2012. Cases were reviewed for the outcomes [primary: loss of normal sinus rhythm; secondary: complications, residual defect and mortality]...
February 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28131609/geriatric-syncope-and-cardiovascular-risk-in-the-emergency-department
#19
Nissa J Ali, Shamai A Grossman
BACKGROUND: Syncope is a transient loss of consciousness that is caused by a brief loss in generalized cerebral blood flow. OBJECTIVE: This article reviews the background, epidemiology, etiologies, evaluation, and disposition considerations of geriatric patients with syncope, with a focus on cardiovascular risk. DISCUSSION: Although syncope is one of the most common symptoms in elderly patients presenting to the emergency department, syncope causes in geriatric patients can present differently than in younger populations, and the underlying etiology is often challenging to discern...
April 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28127997/investigational-drug-therapies-for-the-treatment-of-gastroparesis
#20
REVIEW
Gareth J Sanger, Pankaj Jay Pasricha
Gastroparesis is defined by nausea, vomiting, pain, early satiety and bloating, and characterized by delayed gastric emptying without obvious structural abnormalities. Metoclopramide is widely used, increasing gastric emptying and inhibiting nausea and vomiting. Other drugs are available in certain countries and some are used 'off-label' because they increase gastric emptying or inhibit emesis. However, correlation between gastroparesis symptoms and rates of gastric emptying is poor. For anti-emetic drugs, dose-ranging and Phase III trials in gastroparesis are lacking...
March 2017: Expert Opinion on Investigational Drugs
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