893 results match your criteria Second-Degree Atrioventricular Block


Lacosamide-associated second-degree atrioventricular block in a healthy, young athlete.

Epilepsy Behav Rep 2020 2;14:100372. Epub 2020 Jun 2.

Northwestern University Feinberg School of Medicine, Department of Neurology, Chicago, IL 60611, United States.

Lacosamide enhances slow inactivation of voltage-gated sodium channels and can lead to dose-dependent PR interval prolongation. Previously, lacosamide has been associated with second-degree atrioventricular (AV) heart block in the context of multiple medical comorbidities and/or in the elderly with multimorbidity on other dromotropic agents. We report a case of second-degree AV block occurring in a healthy, athletic young adult. Read More

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http://dx.doi.org/10.1016/j.ebr.2020.100372DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7334591PMC

Noninvasive Fetal Electrocardiography in the Diagnosis of Long QT Syndrome: A Case Series.

Fetal Diagn Ther 2020 Jul 2:1-6. Epub 2020 Jul 2.

Division of Cardiology, Children's National Hospital, Washington, District of Columbia, USA.

Introduction: Early detection and monitoring for malignant arrhythmias is fundamental to prenatal care in long QT syndrome (LQTS). Recently, we studied the feasibility of isolating the fetal electrocardiogram (fECG) and measuring electrocardiographic intervals with a noninvasive fECG device using blind source separation with reference signal. Our aim was to evaluate the ability of fECG to diagnose LQTS. Read More

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http://dx.doi.org/10.1159/000508043DOI Listing

Bradyarrhythmia secondary to vagus nerve stimulator 7 years after placement.

BMJ Case Rep 2020 Jun 30;13(6). Epub 2020 Jun 30.

Cardiology, Monmouth Medical Center, Long Branch, New Jersey, USA.

We present a case of a 38-year-old man with a previous medical history of asthma and refractory epilepsy requiring vagal nerve stimulator (VNS) placement 7 years prior to the presentation who was found to be in atrial fibrillation with a rapid ventricular response during a preoperative evaluation, which prompted transoesophageal echocardiography and subsequent cardioversion. In preparation for cardioversion, the VNS was turned off and the patient was cardioverted to normal sinus rhythm. Following cardioversion, the VNS was activated again. Read More

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http://dx.doi.org/10.1136/bcr-2020-235514DOI Listing

Left bundle branch pacing improved heart function in a 10-year-old child after a 3-month follow-up.

Europace 2020 Jun 12. Epub 2020 Jun 12.

Department of Cardiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, No. 1678 Dongfang Road, Shanghai 200127, China.

Aims: As a physiological pacing strategy, left bundle branch pacing (LBBP) were used to correct left bundle branch block (LBBB), however, there is no relevant report in children. We aimed to evaluate the feasibility of LBBP in children.

Methods And Results: Left bundle branch pacing was performed in a 10-year-old girl with a second-degree atrioventricular and LBBB. Read More

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http://dx.doi.org/10.1093/europace/euaa090DOI Listing

Lamin A/C Cardiomyopathy with E203K Pathogenic Mutation.

Cureus 2020 Apr 21;12(4):e7761. Epub 2020 Apr 21.

Pediatrics, Beaumont Hospital, Royal Oak, USA.

Lamin A/C (LMNA) cardiomyopathy is an adult-onset, autosomal dominant, rapidly progressive cardiomyopathy which belongs to a spectrum of familial idiopathic cardiomyopathies. It is the most common type of familial dilated cardiomyopathy that is associated with conduction defects. A 76-year-old African American female with second-degree atrioventricular (AV) block presented for evaluation of persistent fatigue. Read More

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http://dx.doi.org/10.7759/cureus.7761DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7243065PMC

How to differentiate second-degree atrioventricular block from extrasystoles in fetuses with a bigeminal ventricular rhythm.

Acta Obstet Gynecol Scand 2020 Apr 22. Epub 2020 Apr 22.

Women's Health and Perinatology Research Group, Department of Clinical Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, Tromsø, Norway.

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http://dx.doi.org/10.1111/aogs.13875DOI Listing

Validation of scoring system predicting permanent pacemaker implantation after transcatheter aortic valve replacement.

Pacing Clin Electrophysiol 2020 05 2;43(5):479-485. Epub 2020 May 2.

University of Texas McGovern Medical School, Houston, Texas.

Background: Transcatheter aortic valve replacement (TAVR) is being increasingly performed in patients with severe aortic stenosis. Despite newer generation valves, atrioventricular (AV) conduction disturbance is a common complication, necessitating permanent pacemaker (PPM) implantation in about 10% of patients. Hence, it is imperative to improve periprocedural risk stratification to predict PPM implantation after TAVR. Read More

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http://dx.doi.org/10.1111/pace.13910DOI Listing

Cardiac effects of repeated focal seizures in rats induced by intrahippocampal tetanus toxin: Bradyarrhythmias, tachycardias, and prolonged interictal QT interval.

Epilepsia 2020 Apr 22;61(4):798-809. Epub 2020 Mar 22.

School of Biomedical Engineering, Purdue University, West Lafayette, Indiana.

Objective: To determine electrical changes in the heart in a chronic, nonstatus model of epilepsy.

Methods: Electrocorticography (ECoG) and electrocardiography (ECG) of nine animals (five made epileptic by intrahippocampal injection of tetanus neurotoxin (TeNT) and four controls), are monitored continuously by radiotelemetry for up to 7 weeks.

Results: Epileptic animals develop a median of 168 seizures, with postictal tachycardias reaching a mean of 487 beats/min and lasting a mean of 661 seconds. Read More

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http://dx.doi.org/10.1111/epi.16479DOI Listing

[Second-degree atrioventricular block caused by Lyme disease].

Ned Tijdschr Geneeskd 2020 Jan 24;164. Epub 2020 Jan 24.

Amsterdam UMC, Afd. Interne Geneeskunde.

Background: Tick-borne diseases, including Lyme disease, are becoming increasingly common in Europe. Lyme disease has a wide variety of clinical manifestations, as a result of which physicians of diverse disciplines are coming into contact with such patients.

Case Description: A 58-year-old man was seen at the emergency room with a symptomatic Wenckebach-type second-degree atrioventricular (AV) block and periods of 2:1 AV block. Read More

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January 2020

The need for permanent pacemaker after restoration of conduction following atrioventricular block: a retrospective cohort study.

Turk Kardiyol Dern Ars 2020 Mar;48(2):103-108

Department of Cardiology, Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran.

Objective: A permanent pacemaker (PPM) is necessary for patients with a symptomatic third-degree or advanced second-degree atrioventricular (AV) block. An AV block due to medication use can often be reversed; however, subsequent relapse can occur and necessitate subsequent PPM implantation. The aim of this study was to explore the course and prognosis of patients with an AV block. Read More

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http://dx.doi.org/10.5543/tkda.2019.96613DOI Listing

[Increased Ventricular Pacing Threshold Caused by Intake of Dronedaron].

Dtsch Med Wochenschr 2020 Feb 18;145(4):249-251. Epub 2020 Feb 18.

Südstadtklinikum Rostock, Klinik für Innere Medizin I, Abteilung für Kardiologie.

History:  The 75 year old patient was hospitalized because of vertigo, exertional dyspnea and clamminess. Based on ischemic heart disease with sick sinus syndrome a pacemaker was implanted 5.5 years ago. Read More

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http://dx.doi.org/10.1055/a-1025-2610DOI Listing
February 2020

Pembrolizumab-Induced Mobitz Type 2 Second-Degree Atrioventricular Block.

Case Rep Cardiol 2020 28;2020:8428210. Epub 2020 Jan 28.

Department of Cardiology, SUNY Upstate Medical University, USA.

Pembrolizumab is a monoclonal antibody directed towards programmed cell death protein 1 (PD-1) and is an antineoplastic drug which has a growing variety of oncologic uses. Pembrolizumab is commonly associated with immune-related adverse events (IRAEs) but is infrequently noted to cause cardiotoxicities such as myocarditis, arrhythmias, and heart failure. The following case report illustrates the clinical course of a 67-year-old female patient with stage IV non-small-cell lung cancer who developed Mobitz type 2 second-degree atrioventricular block three weeks after receiving her first infusion of pembrolizumab. Read More

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http://dx.doi.org/10.1155/2020/8428210DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7007942PMC
January 2020

Dynamic changes in electrocardiograms of a premature infant with hyperkalemia and hypocalcemia.

J Electrocardiol 2020 Mar - Apr;59:84-87. Epub 2020 Jan 28.

Department of Electrophysiology, Yijishan Hospital of Wannan Medical College, Wuhu, China. Electronic address:

We present the case of one premature infant who developed bradycardia due to hyperkalemia and hypocalcemia with continuous ECG recording showing second-degree atrioventricular block and wide QRS complex rhythm. TAKE-HOME MESSAGE: Multiple ECG changes can occur with combined hyperkalemia and hypocalcemia in newborns. If left unchecked, these electrolyte disorder can be fatal. Read More

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http://dx.doi.org/10.1016/j.jelectrocard.2020.01.006DOI Listing
January 2020

Survival of a dog with accidental colchicine overdose.

J Vet Emerg Crit Care (San Antonio) 2020 Jan 28;30(1):74-80. Epub 2019 Dec 28.

Department of Medicine, Veterinary Specialist Services, Underwood, Queensland, Australia.

Objective: To describe the treatment and clinical course of a dog accidentally prescribed 10 times the recommended dose of colchicine (0.3 mg/kg/d instead of 0.03 mg/kg/d). Read More

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http://dx.doi.org/10.1111/vec.12919DOI Listing
January 2020

[Exploration of Mahuang Fuzi Xixin Decoction formula syndromes based on severe cases of critical care and its application for nosocomial infection in critical care medicine including hyperpyrexia after tracheotomy and severe pain accompanied by acute myocardial infarction and diabetic peripheral neuropathy].

Authors:
Xing-Jiang Xiong

Zhongguo Zhong Yao Za Zhi 2019 Sep;44(18):3869-3875

Guang'anmen Hospital,China Academy of Chinese Medical Sciences Beijing 100053,China.

Mahuang Fuzi Xixin Decoction recorded in Treatise on Febrile Diseases by Zhang Zhongjing in the Han Dynasty have been widely used in treating Yang deficiency and exogenous wind-cold syndrome by traditional Chinese medicine physicians for thousands of years. The indications of Mahuang Fuzi Xixin Decoction include bradyarrhythmia,sinus bradycardia,sick sinus node syndrome,senile exogenous,asthmatic cold,rhinitis,bronchial asthma,optic neuritis,optic atrophy,sudden blindness,sudden onset of cough,laryngeal obstruction,migraine,joint pain,low back pain,insomnia,shock,heart failure,renal failure,accompanied by fever or nosocomial infection,and hyperpyrexia after tracheotomy; dark complexion,chills,cold limbs,listlessness,fatigue,insomnia,lack of thirst,liking hot drinks,slightly swollen limbs or whole body,pale fat tongue,greasy fur,and deep pulse. Mahuang Fuzi Xixin Decoction is a potential drug for Shaoyin disease complicated with fever and pain. Read More

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http://dx.doi.org/10.19540/j.cnki.cjcmm.20190416.503DOI Listing
September 2019

A Case Report of Accidental Intoxication following Ingestion of Foxglove Confused with Borage: High Digoxinemia without Major Complications.

Case Rep Cardiol 2019 29;2019:9707428. Epub 2019 Nov 29.

Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Via Balzaretti 9, Milan, Italy.

Foxglove ( L.) leaves are frequently confused with borage ( L.), which is traditionally used as a food ingredient. Read More

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http://dx.doi.org/10.1155/2019/9707428DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6906804PMC
November 2019

Analysis of cardiac monitoring and safety data in patients initiating fingolimod treatment in the home or in clinic.

BMC Neurol 2019 Nov 15;19(1):287. Epub 2019 Nov 15.

State of the Heart Cardiology, Plaza 1, Medical Pkwy. N Suite 103, Dallas, TX, 75234, USA.

Background: Fingolimod (Gilenya®) is approved for relapsing forms of multiple sclerosis in the USA. Owing to transient heart-rate effects when initiating fingolimod, eligible patients undergo precautionary baseline assessment and first-dose observation (FDO) for ≥6 h. Prior to 2014, FDO was undertaken only in clinics. Read More

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http://dx.doi.org/10.1186/s12883-019-1506-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6857316PMC
November 2019
2.040 Impact Factor

Second-degree atrioventricular block in an adolescent with an acute alcohol intoxication.

Am J Emerg Med 2020 02 30;38(2):407.e1-407.e3. Epub 2019 Aug 30.

Department of Emergency Medicine, VieCuri Medical Center, Venlo, the Netherlands.

Binge drinking adolescents often present to the emergency department with an alcohol intoxication. Known clinical signs of alcohol intoxications are impaired consciousness and vomiting, occasionally complicated by pulmonary aspiration. Emergency physicians are often not aware of the fact that excessive alcohol intake can also lead to atrioventricular (AV) conduction disturbances. Read More

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http://dx.doi.org/10.1016/j.ajem.2019.158419DOI Listing
February 2020
1.152 Impact Factor

The predictive value of PRECISE-DAPT score for arrhythmic complications in patients with ST-elevation myocardial infarction.

Coron Artery Dis 2019 Nov;30(7):499-504

Department of Cardiology, University of Health Sciences, Istanbul Umraniye Education and Research Hospital.

Objective: To investigate the predictive value of the PRECISE-DAPT score for the development of arrhythmias in patients with ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention.

Method: A total of 706 patients with a diagnosis of ST-segment elevation myocardial infarction who underwent primary percutaneous coronary intervention were enrolled to the study. The patients were divided into two groups according to the PRECISE-DAPT score (PRECISE-DAPT score ≥25 and PRECISE-DAPT score <25). Read More

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http://dx.doi.org/10.1097/MCA.0000000000000788DOI Listing
November 2019
5 Reads

Arrhythmias in Patients on Maintenance Dialysis: A Cross-sectional Study.

Am J Kidney Dis 2020 02 18;75(2):214-224. Epub 2019 Sep 18.

Department of Nephrology, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.

Rationale & Objective: Patients with kidney failure treated with maintenance dialysis experience a high rate of mortality, in part due to sudden cardiac death caused by arrhythmias. The prevalence of arrhythmias, including the subset that are clinically significant, is not well known. This study sought to estimate the prevalence of arrhythmias, characterize the pattern of arrhythmic events in relation to dialysis treatments, and identify associated clinical characteristics. Read More

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http://dx.doi.org/10.1053/j.ajkd.2019.06.012DOI Listing
February 2020
3 Reads

A challenging ECG: a case of a lengthening PR interval.

Postgrad Med 2019 Nov 1;131(8):572-573. Epub 2019 Oct 1.

Department of Cardiology, Long Beach Veterans Affairs Medical Center, Long Beach, CA, USA.

A 62-year-old man presented to the emergency department with shortness of breath and chest tightness. His initial ECG appeared to have an ectopic P-wave with a lengthening PR interval consistent with second degree AV block - Mobitz Type I. But closer inspection showed a faster, independent atrial rate. Read More

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http://dx.doi.org/10.1080/00325481.2019.1669917DOI Listing
November 2019

Safety and efficacy of ozanimod versus interferon beta-1a in relapsing multiple sclerosis (RADIANCE): a multicentre, randomised, 24-month, phase 3 trial.

Lancet Neurol 2019 11 3;18(11):1021-1033. Epub 2019 Sep 3.

Neurologic Clinic and Policlinic, University Hospital and University of Basel, Basel, Switzerland.

Background: Ozanimod is a sphingosine 1-phosphate receptor modulator, which selectively binds to sphingosine 1-phosphate receptor subtypes 1 and 5 with high affinity. In the RADIANCE phase 2 study in participants with relapsing multiple sclerosis, ozanimod was associated with better efficacy than placebo on MRI measures and was well tolerated. The RADIANCE phase 3 study aimed to confirm the safety and efficacy of ozanimod versus interferon beta-1a in individuals with relapsing multiple sclerosis. Read More

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http://dx.doi.org/10.1016/S1474-4422(19)30238-8DOI Listing
November 2019
6 Reads

Safety and efficacy of ozanimod versus interferon beta-1a in relapsing multiple sclerosis (SUNBEAM): a multicentre, randomised, minimum 12-month, phase 3 trial.

Lancet Neurol 2019 11 3;18(11):1009-1020. Epub 2019 Sep 3.

Mellen Center for Multiple Sclerosis Treatment and Research, Cleveland Clinic, Cleveland, OH, USA.

Background: Ozanimod, a sphingosine 1-phosphate receptor modulator, selectively binds to receptor subtypes 1 and 5 with high affinity. The RADIANCE phase 2 study showed that ozanimod had better efficacy than placebo on MRI measures, with a favourable safety profile, in participants with relapsing multiple sclerosis. The SUNBEAM study aimed to assess the safety and efficacy of ozanimod versus intramuscular interferon beta-1a in participants with relapsing multiple sclerosis. Read More

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http://dx.doi.org/10.1016/S1474-4422(19)30239-XDOI Listing
November 2019
5 Reads

Severe transient neonatal long QT syndrome due to maternal paroxetine usage: a case report.

Cardiol Young 2019 Oct 2;29(10):1300-1301. Epub 2019 Sep 2.

Department of Paediatric Cardiology, University Medical Centre/Wilhelmina Children's Hospital, Utrecht, the Netherlands.

A female neonate with in utero selective serotonin reuptake inhibitor exposure presented with bradycardia shortly after birth. Electrocardiography showed severe QT prolongation and second-degree atrioventricular block. Over time QT-times spontaneously normalised and genetic testing did not show mutations associated with long QT syndrome making maternal selective serotonin reuptake inhibitor usage the most likely explanation for the observed severe transient neonatal QT prolongation. Read More

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http://dx.doi.org/10.1017/S1047951119001938DOI Listing
October 2019
4 Reads

Severe Cardiorespiratory and Neurologic Symptoms in a Neonate due to Mepivacaine Intoxication.

Case Rep Pediatr 2019 25;2019:4013564. Epub 2019 Jul 25.

Department of Neonatology, Emma Children's Hospital and VU University Medical Center, Boelelaan 1117, Amsterdam 1081 HV, Netherlands.

Local anesthesia with mepivacaine is used for vaginal deliveries and for minor surgeries of the vagina and perineum as repair of an episiotomy or perineal laceration. Neonatal intoxication caused by local anesthesia with mepivacaine for maternal episiotomy has been rarely reported. We present a case of a term female infant with unexplained cardiorespiratory distress and several neurologic findings, including seizures, one hour after birth. Read More

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http://dx.doi.org/10.1155/2019/4013564DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6683799PMC
July 2019
3 Reads

Establishing 24-hour Holter reference intervals for clinically healthy puppies.

Res Vet Sci 2019 Aug 11;125:253-255. Epub 2019 Jul 11.

Department of Veterinary Clinical Sciences, College of Veterinary Medicine, PO Box 647060, Washington State University, Pullman, WA 99164-7060, USA.

Normal Holter reference intervals have not been established for dogs <1 year of age. This lack of Holter reference intervals inhibits the ability to screen puppies for early indicators of heart disease, especially in breeds that have inherited cardiac arrhythmias (e.g. Read More

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http://dx.doi.org/10.1016/j.rvsc.2019.07.010DOI Listing
August 2019
6 Reads

Prevalence and Incidence of Atrial Fibrillation and Other Arrhythmias in the General Older Population: Findings From the Swedish National Study on Aging and Care.

Gerontol Geriatr Med 2019 Jan-Dec;5:2333721419859687. Epub 2019 Jun 27.

Blekinge Institute of Technology, Karlskrona, Sweden.

To study the prevalence and cumulative incidence of arrhythmias in the general population of adults aged 60 and older over a 6-year period. Data were taken from the Swedish National Study on Aging and Care (SNAC), a national, longitudinal, multidisciplinary study of the general elderly population (defined as 60 years of age or older). A 12-lead resting electrocardiography (ECG) was performed at baseline and 6-year follow-up. Read More

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http://dx.doi.org/10.1177/2333721419859687DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6598326PMC
June 2019
15 Reads

Contemporary practice pattern of permanent pacing for conduction disorders in inferior ST-elevation myocardial infarction.

Clin Cardiol 2019 Aug 7;42(8):728-734. Epub 2019 Jun 7.

Devision of Cardiovascular Medicine, University of Florida, Jacksonville, Florida.

Background: Currently, there is no clear consensus regarding the optimal waiting period before permanent pacemaker implantation in patients with conduction disorders following an inferior myocardial infarction.

Hypothesis: We aimed to elucidate the contemporary practice pattern of pacing, especially the timing of pacemaker implantation, for sinoatrial node and atrioventricular (AV) conduction disorders following an inferior ST-elevation myocardial infarction (STEMI).

Methods: Using the National Inpatient Sample database from 2010 to 2014, we identified patients with a primary diagnosis of inferior STEMI. Read More

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http://dx.doi.org/10.1002/clc.23210DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6671775PMC
August 2019
10 Reads

Evaluation of heart rate variability and behavior of electrocardiographic parameters in dogs affected by chronic Monocytic Ehrlichiosis.

PLoS One 2019 24;14(5):e0216552. Epub 2019 May 24.

Department of Veterinary Clinics, São Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Botucatu, São Paulo, Brazil.

Canine Monocytic Ehrlichiosis (CME) is a systemic disease prevalent in the entire world caused by the obligate intracellular bacteria Ehrlichia canis. The occurrence of myocarditis with a high prevalence of arrhythmias in dogs affected by this disease in the cytopenic phase has already been proven. This study aims to evaluate the concentrations of CK MB, cTnI and NT-proBNP in dogs affected by Ehrlichia canis in the chronic phase since the intense stimulation of the immune system can lead to myocarditis; to evaluate if the condition can lead to arrhythmic events and, if so, define their frequency and classification through conventional and ambulatory electrocardiogram tests (Holter method) for a period of 24 hours; to analyze heart rate variability in the time domain and whether the condition can lead to autonomic imbalance; and to determine the survival rate of affected dogs, identifying possible risk factors for mortality at this stage of the disease. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0216552PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6534309PMC
January 2020
26 Reads

The influence of anesthesia with isoflurane on the pulmonary and aortic blood flow of Racing Pigeons ( f. domestica) measured by pulsed wave Doppler echocardiography.

Open Vet J 2019 04 7;9(1):18-26. Epub 2019 Feb 7.

Clinic for Small Mammals, Reptiles and Birds, University of Veterinary Medicine Hannover, Foundation, D-30559 Hannover, Germany.

Doppler echocardiographic examinations are an important technique for evaluating the blood flow also in avian cardiology. The influence of anesthesia on the blood flow in the heart is in detail unknown for the most avian species. The present study investigated the influence of an isoflurane anesthesia on the systolic blood flow of the aorta and the pulmonary artery in the area of the heart valves examined by pulsed wave Doppler sonography in Racing Pigeons ( f. Read More

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http://dx.doi.org/10.4314/ovj.v9i1.4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6500857PMC
April 2019
9 Reads

Lyme carditis presenting as atrial fibrillation.

BMJ Case Rep 2019 Apr 29;12(4). Epub 2019 Apr 29.

Department of Cardiology, Rochester Regional Health, Rochester, New York, USA.

The incidence of Lyme disease in the USA is 8 per 100 000 cases and 95% of those occur in the Northeastern region. Cardiac involvement occurs in only 1% of untreated patients. We describe the case of a 46-year-old man who presented with chest pressure, dyspnoea, palpitations and syncope. Read More

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http://dx.doi.org/10.1136/bcr-2018-228975DOI Listing
April 2019
10 Reads

High Prevalence of Proarrhythmic Events in Patients With History of Atrial Fibrillation Undergoing a Rhythm Control Strategy: A Retrospective Study.

J Clin Med Res 2019 May 14;11(5):345-352. Epub 2019 Apr 14.

Division of Geriatrics, Clinic "S. Maria del Pozzo", via Pomigliano 40, Somma Vesuviana, Italy.

Background: A retrospective study was undertaken to evaluate the respective prevalence of proarrhythmic events depending on various therapeutic regimens within a population of patients with history of atrial fibrillation (AF) undergoing a rhythm control strategy.

Methods: Inclusion criterion was the presence of AF in the patient's clinical history, whose cardioversion had been followed by the adoption of rhythm control strategy. The primary endpoint was the determination of the respective prevalences of paradoxical arrhythmias in the various therapeutic groups. Read More

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http://dx.doi.org/10.14740/jocmr3805DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6469886PMC
May 2019
8 Reads

Acute Outcomes for Cryoablation in Pediatric Patients with Perinodal Tachyarrhythmia: Single Center Report.

Acta Cardiol Sin 2019 Mar;35(2):134-143

Department of Pediatrics, National Taiwan University Hospital, Taipei.

Background: Cryoablation is an alternative treatment for atrioventricular nodal reentrant tachycardia (AVNRT) and right anteroseptal and midseptal accessory pathways (APs) with a low complication rate. A high recurrence rate is still a concern in pediatric patients.

Methods: From February 2015 to March 2017, all consecutive patients who underwent cryoablation for supraventricular tachycardia were included in this study. Read More

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http://dx.doi.org/10.6515/ACS.201903_35(2).20180903ADOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6434415PMC
March 2019
11 Reads

Frequency and characteristics of exercise-induced second-degree atrioventricular block in patients undergoing stress testing.

J Electrocardiol 2019 May - Jun;54:54-60. Epub 2019 Mar 14.

Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, United States of America.

Background: Spontaneous second-degree atrioventricular block induced by exercise (Ex2AVB) is rare, but it can cause profound exercise intolerance.

Objective: We sought to determine the frequency of Ex2AVB in our exercise testing practice and to describe characteristics of patients with Ex2AVB. We hypothesized that the number of patients would be small, but they would require invasive treatment. Read More

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http://dx.doi.org/10.1016/j.jelectrocard.2019.03.009DOI Listing
March 2019
13 Reads

[Abnormal ECG findings in athletes].

Authors:
Pietro Delise

G Ital Cardiol (Rome) 2019 Apr;20(4):242-253

U.O. Cardiologia, Ospedale P. Pederzoli, Peschiera del Garda (VR).

Athlete's heart, as a consequence of exercise training, is characterized by hypervagotonia and enlargement of cardiac chambers. Such modifications influence the electrocardiogram. In fact, athletes frequently present with common cardiac alterations, including sinus bradycardia, first and second degree atrioventricular block, increased QRS voltage, and early repolarization. Read More

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http://www.giornaledicardiologia.it/articoli.php?archivio=ye
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http://dx.doi.org/10.1714/3126.31077DOI Listing
April 2019
84 Reads

A 2:1 atrioventricular block presenting paradoxical ventriculophasic response.

Ann Noninvasive Electrocardiol 2019 07 19;24(4):e12642. Epub 2019 Mar 19.

Department of Cardiology, Kizawa Memorial Hospital, Minokamo, Japan.

Ventriculophasic response (VR) is defined as the shortening of the sinus cycle length in the setting of greater than second-degree atrioventricular (AV) block. Typically, the PP intervals interposing a QRS complex are shorter than those without a QRS complex. Paradoxical VR is a rare clinical entity. Read More

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http://dx.doi.org/10.1111/anec.12642DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6931805PMC
July 2019
6 Reads

Permanent cardiac pacing for patients with iatrogenic or potentially reversible bradyarrhythmia.

Rev Port Cardiol 2019 02 15;38(2):105-111. Epub 2019 Mar 15.

Serviço de Cardiologia, Centro Hospitalar de Setúbal, Setúbal, Portugal.

Introduction: In iatrogenic or potentially reversible bradyarrhythmia, drug discontinuation or metabolic correction is recommended before permanent cardiac pacemaker (PM) implantation. These patients often have conduction system disease and there are few data on recurrence or the need for a permanent PM.

Objective: To analyze the need for PM implantation in patients with iatrogenic bradyarrhythmia or bradyarrhythmia associated with other potentially reversible causes. Read More

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http://dx.doi.org/10.1016/j.repc.2018.05.018DOI Listing
February 2019
11 Reads

Cardiac Arrhythmias in Horses.

Authors:
Gunther van Loon

Vet Clin North Am Equine Pract 2019 Apr 11;35(1):85-102. Epub 2019 Mar 11.

Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke 9820, Belgium. Electronic address:

Arrhythmias are common in horses. Sinus arrhythmia and first- and second-degree atrioventricular block are frequently found physiologic arrhythmias, but should immediately disappear after stress or exercise. Atrial premature depolarizations are usually not associated with poor performance, but are a potential trigger for atrial fibrillation. Read More

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http://dx.doi.org/10.1016/j.cveq.2018.12.004DOI Listing
April 2019
8 Reads

Assessment of atrioventricular conduction by echocardiography and magnetocardiography in normal and anti-Ro/SSA-antibody-positive pregnancies.

Ultrasound Obstet Gynecol 2019 Nov;54(5):625-633

Department of Medical Physics, The University of Wisconsin, Madison, WI, USA.

Objectives: The objectives of this study were, first, to evaluate the association between fetal echocardiographic atrioventricular (AV) and magnetocardiographic (fMCG) PR intervals at different gestational ages (GAs) in normal and anti-Ro/SSA-antibody-positive pregnancies; second, to determine if PR interval could be predicted by AV interval; and third, to assess the neonatal outcome of fetuses with prolonged AV and PR intervals, with the goal of developing criteria for fetal first-degree AV block (AVB-I).

Methods: This was a retrospective study of anti-Ro/SSA-antibody-positive pregnancies (cases) and controls that underwent fMCG and fetal echocardiography at the same recording session. Cardiac cycle length, GA and AV (by mitral inflow/aortic outflow Doppler) and PR (by fMCG) intervals were measured. Read More

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http://dx.doi.org/10.1002/uog.20245DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6699937PMC
November 2019
3 Reads

Case report: Atrioventricular block after transcatheter atrial septal closure using the Figulla® Flex II ASD occluder.

Catheter Cardiovasc Interv 2019 04 17;93(5):E298-E301. Epub 2019 Feb 17.

Department of Paediatric Cardiology, Japan Community Health Organization Chukyo Hospital, Nagoya, Japan.

We report a 7-year-old male patient who developed severe atrioventricular block after transcatheter closure of the atrial septal defect with an Occlutech Figulla® Flex II ASD occluder (FSO). He had a small aortic rim and the defect measuring 22.3 mm by balloon sizing. Read More

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http://dx.doi.org/10.1002/ccd.28148DOI Listing
April 2019
29 Reads

Indications for permanent pacing in dogs and cats.

J Vet Cardiol 2019 Apr 29;22:20-39. Epub 2019 Jan 29.

Clinica Veterinaria Malpensa, Viale Marconi 27, 21017 Samarate, Varese, Italy.

Pacemaker implantation is considered as a standard procedure for treatment of symptomatic bradycardia in both dogs and cats. Advanced second-degree and third-degree atrioventricular blocks, sick sinus syndrome, persistent atrial standstill, and vasovagal syncope are the most common rhythm disturbances that require pacing to either alleviate clinical signs or prolong survival. Most pacemakers are implanted transvenously, using endocardial leads, but rarely epicardial leads may be necessary. Read More

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http://dx.doi.org/10.1016/j.jvc.2018.12.003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7185536PMC
April 2019
30 Reads

Resolution of fetal second-degree atrioventricular block.

J Electrocardiol 2018 Nov - Dec;51(6):945-947. Epub 2018 Aug 17.

University of Massachusetts Medical School, Department of Pediatric Cardiology, 55 Lake Avenue North, Worcester, MA 01655, United States of America.

Fetal atrioventricular (AV) block is a rare and potentially devastating condition. Most commonly fetal AV block is mediated by maternal lupus antibodies which cause irreversible damage to the AV node. For many fetuses, the only potential intervention is premature delivery and highly invasive pacemaker implantation. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00220736183048
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http://dx.doi.org/10.1016/j.jelectrocard.2018.08.020DOI Listing
October 2019
42 Reads

Dysrhythmias in patients with a complete atrioventricular septal defect: From surgery to early adulthood.

Congenit Heart Dis 2019 Mar 28;14(2):280-287. Epub 2018 Nov 28.

Department of Cardiothoracic Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands.

Objective: Outcomes after surgical repair of complete atrioventricular septal defect (cAVSD) have improved. With advancing age, the risk of development of dysrhythmias may increase. The aims of this study were to (1) examine development of sinus node dysfunction (SND), atrial and ventricular tachyarrhythmias, and (2) study progression of atrioventricular conduction abnormalities in young adult patients with repaired cAVSD. Read More

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http://dx.doi.org/10.1111/chd.12724DOI Listing
March 2019
38 Reads

Prenatal heart block screening in mothers with SSA/SSB autoantibodies: Targeted screening protocol is a cost-effective strategy.

Congenit Heart Dis 2019 Mar 16;14(2):221-229. Epub 2018 Nov 16.

Children's Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.

Objective: Maternal anti-Ro/SSA and anti-La/SSB antibodies can lead to fetal complete heart block (CHB). Current guidelines recommend weekly echocardiographic screening between 16 and 28 weeks gestation. Given the cost of screening and the rarity of conduction abnormalities in fetuses of mothers with low anti-Ro levels (<50 U/mL), we sought to identify a strategy that optimizes resource utilization. Read More

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http://doi.wiley.com/10.1111/chd.12713
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http://dx.doi.org/10.1111/chd.12713DOI Listing
March 2019
38 Reads

A 48-Year-Old Athletic Man With Bradycardia During Sleep.

Chest 2018 11;154(5):e139-e142

Sleep Disorders Center, Neurologic Institute, Cleveland Clinic, Cleveland, OH.

Case Presentation: A 48-year-old athletic man with history of dyslipidemia and second-degree atrioventricular block (Mobitz type I 2:1 atrioventricular block) endorses sleep-related difficulties at his annual physical examination. Mobitz type I block was diagnosed 11 years earlier when the patient presented to his primary care physician with left-sided chest pain for 2 months. He was evaluated by cardiology, with a normal stress echocardiogram. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00123692183078
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http://dx.doi.org/10.1016/j.chest.2018.05.008DOI Listing
November 2018
47 Reads

Advanced Heart Block in Children with Lyme Disease.

Pediatr Cardiol 2019 Mar 31;40(3):513-517. Epub 2018 Oct 31.

Department of Pediatrics, Division of Pediatric Cardiology, Columbia University, College of Physicians and Surgeons, 3959 Broadway, 2-North, New York, NY, USA.

Background: The clinical course of children with advanced heart block secondary to Lyme disease has not been well characterized.

Objective: To review the presentation, management, and time to resolution of heart block due to Lyme disease in previously healthy children.

Methods: An IRB approved single-center retrospective study was conducted of all patients < 21 years old with confirmed Lyme disease and advanced second or third degree heart block between 2007 and 2017. Read More

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http://dx.doi.org/10.1007/s00246-018-2003-8DOI Listing
March 2019
13 Reads

Outcome of Cardiac Sarcoidosis Presenting With High-Grade Atrioventricular Block.

Circ Arrhythm Electrophysiol 2018 08;11(8):e006145

Heart and Lung Center (H.-K.N., J.L., K.E., R.K., P.S., M.K.).

Background: Symptomatic high-grade atrioventricular block (AVB) is the most common and often the only presenting manifestation (lone AVB) of cardiac sarcoidosis. Implantation of an intracardiac cardioverter defibrillator instead of a pacemaker is recommended, but the true risk of fatal arrhythmia, one incident to lone AVB in particular, remains poorly known.

Methods: We used Myocardial Inflammatory Diseases in Finland Study Group Registry to analyze the presentations, left ventricular (LV) function, pacemaker therapy, and ventricular arrhythmias in cardiac sarcoidosis. Read More

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https://www.ahajournals.org/doi/10.1161/CIRCEP.117.006145
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http://dx.doi.org/10.1161/CIRCEP.117.006145DOI Listing
August 2018
49 Reads

The Incremental Benefit of Color Tissue Doppler in Fetal Arrhythmia Assessment.

J Am Soc Echocardiogr 2019 01 16;32(1):145-156. Epub 2018 Oct 16.

Fetal and Neonatal Cardiology Program, Department of Pediatrics, Division of Cardiology, Women's & Children's Health Research Institute, University of Alberta, Stollery Children's Hospital, Edmonton, Alberta, Canada. Electronic address:

Background: Accurate fetal arrhythmia (FA) diagnosis is key for effective management. Currently, FA assessment relies on standard echocardiography-based techniques (M mode and spectral Doppler), which require adequate fetal position and cursor alignment to define temporal relationships of mechanical events. Few data exist on the application of color Doppler tissue imaging (c-DTI) in FA assessment. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S08947317183044
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http://dx.doi.org/10.1016/j.echo.2018.08.009DOI Listing
January 2019
35 Reads

Home Monitoring for Fetal Heart Rhythm During Anti-Ro Pregnancies.

J Am Coll Cardiol 2018 10;72(16):1940-1951

Division of Cardiology, Department of Pediatrics, Hospital for Sick Children, Toronto, Canada.

Background: Fetal atrioventricular block (AVB) occurs in 2% to 4% of anti-Ro antibody-positive pregnancies and can develop in <24 h. Only rarely has standard fetal heart rate surveillance detected AVB in time for effective treatment.

Objectives: Outcome of anti-Ro pregnancies was surveilled with twice-daily home fetal heart rate and rhythm monitoring (FHRM) and surveillance echocardiography. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S07351097183694
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http://dx.doi.org/10.1016/j.jacc.2018.07.076DOI Listing
October 2018
63 Reads