1,678 results match your criteria Heart Block Second Degree


Possibility of steroid therapy without pacemaker implantation in patients with sarcoidosis presenting atrioventricular block.

Heart Vessels 2022 May 14. Epub 2022 May 14.

Department of Cardiovascular Medicine, Nippon Medical School, 1-1-5, Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan.

Atrioventricular Block (AVB) is one of the common manifestations in cardiac sarcoidosis (CS). Although pacemaker implantation is generally recommended in patients with CS complicated by symptomatic AVB, some case reports have shown that they can be managed by steroid therapy without pacemaker implantation. The aim of this study was to evaluate the feasibility and effectiveness of steroid therapy without pacemaker implantation in patients with CS complicated by symptomatic AVB. Read More

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Causes of Heart Block in Young and Middle-Aged South Africans.

Curr Probl Cardiol 2022 May 11:101247. Epub 2022 May 11.

The University of Cape Town, Faculty of Health Sciences, Department of Medicine, Division of Cardiology; Groote Schuur Hospital, E17 Cardiac Clinic.

Background: There is a paucity of data regarding the aetiology of atrioventricular heart block (AVB) in young and middle-aged patients, particularly from low- and middle-income countries.

Objective: To determine the aetiology of AVB in patients ≤ 55 years treated with transvenous pacemakers in a low- or middle-income country.

Methods: We performed a retrospective review of all patients who received a transvenous pacemaker for newly diagnosed AVB from 01/01/2013 to 31/12/2020 at Groote Schuur Hospital, Cape Town, South Africa. Read More

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First-degree atrioventricular block in 14-year-old child due to Lyme disease.

J Infect Dev Ctries 2022 Apr 30;16(4):726-728. Epub 2022 Apr 30.

Department of Propaedeutic Pediatrics and Medical Genetics, Danylo Halytsky Lviv National Medical University, Communal Noncommercial Enterprise of Lviv Regional Council Lviv Regional Children's Clinical Hospital "Ohmatdyt", Lviv, Ukraine.

Lyme disease is an infectious disease caused by bacteria of the Borrelia burgdorferi sensu lato (Bbsl) complex and is characterized by predominant lesions of the skin, cardiovascular system, nervous system and musculoskeletal system. We have described a clinical case of first-degree atrioventricular block in a 14-year-old boy caused by Lyme borreliosis. The disease started with the manifestations of cardiovascular system involvement. Read More

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Transient but recurrent complete heart block in a patient after COVID-19 vaccination - A case report.

Ann Med Surg (Lond) 2022 Jun 29;78:103694. Epub 2022 Apr 29.

Department of Cardiology, CHR Citadelle Hospital, Liège, Belgium.

Introduction: Cardiovascular disorders have been extensively reported during COVID-19 illness, including arrhythmias such as atrioventricular conduction disturbances. To date, one case of transient heart block has been reported after COVID-19 vaccine.

Case Presentation: A 73 years-old woman presented with shortness of breath and fatigue 2 weeks after receiving her second dose of BNT162b2 SARS-CoV-2 mRNA vaccine. Read More

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Rare and potential pathogenic mutations of LMNA and LAMA4 associated with familial arrhythmogenic right ventricular cardiomyopathy/dysplasia with right ventricular heart failure, cerebral thromboembolism and hereditary electrocardiogram abnormality.

Orphanet J Rare Dis 2022 05 7;17(1):183. Epub 2022 May 7.

The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523710, Guangdong Province, China.

Background: Arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) is associated with ventricular arrhythmia, heart failure (HF), and sudden death. Thromboembolism is also an important and serious complication of ARVC/D. However, the etiology of ARVC/D and thromboembolism and their association with genetic mutations are unclear. Read More

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Electrocardiographic characteristics of trained and untrained standardbred racehorses.

J Vet Intern Med 2022 Apr 30. Epub 2022 Apr 30.

Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Taastrup, Denmark.

Background: Long-term exercise induces cardiac remodeling that potentially influences the electrical properties of the heart.

Hypothesis/objectives: We assessed whether training alters cardiac conduction in Standardbred racehorses.

Animals: Two hundred one trained and 52 untrained Standardbred horses. Read More

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Pregnancy maternal fetal outcomes among pregnancies complicated with atrioventricular block.

BMC Pregnancy Childbirth 2022 Apr 10;22(1):307. Epub 2022 Apr 10.

Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, No. 20, 3rd section, South Renmin Road, Chengdu, 610041, Sichuan, China.

Background: Atrioventricular block (AVB) during pregnancy is rare. Case study for pregnancy with AVB have been reported but a consensus guideline for peripartum management has not been established. This study aimed to investigate cardiac and obstetric complications and outcomes in our pregnant women with AVB and share our management experience. Read More

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Sjogren syndrome presenting as atrioventricular block in an adult.

BMJ Case Rep 2022 Apr 8;15(4). Epub 2022 Apr 8.

Division of Rheumatology, Albany Medical Center, Albany, New York, USA.

A woman in her late teens with a history of Juvenile idiopathic arthritis (JIA) and ongoing sicca symptoms presented with syncope. Upon admission, she was found to be bradycardic with a second-degree atrioventricular (AV) block. After infectious, structural and metabolic aetiologies had been ruled out, she was worked up for rheumatologic causes. Read More

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Severe Bradycardia Occurring After Assisted Mouth Opening: A Case Report.

Anesth Prog 2022 Apr;69(1):46-48

Department of Dental Anesthesiology, School of Dental Medicine Tsurumi University, Kanagawa, Japan.

We report a case of severe bradycardia during general anesthesia due to reduced atrioventricular conduction capacity believed to have been caused by the trigeminocardiac reflex (TCR). A 46-year-old woman was scheduled for intraoral scar revision under general anesthesia. When the surgeon opened her mouth intraoperatively, the patient's blood pressure immediately increased, and she developed significant bradycardia and a transient Mobitz type II second-degree atrioventricular block. Read More

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Case Report: Biventricular Noncompaction Cardiomyopathy With Pulmonary Stenosis and Bradycardia in a Fetus With KCNH2 Mutation.

Front Genet 2022 24;13:821226. Epub 2022 Feb 24.

Department of Echocardiography, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.

Left ventricular noncompaction (LVNC) is a rare cardiomyopathy, long QT syndrome (LQTS) is a rare ion channel disease, and simultaneous occurrence of both is even rarer. Further clinical reports and studies are needed to identify the association between LVNC and LQTS and the underlying mechanism. A 26-year-old primigravida was referred at 25 weeks gestation for prenatal echocardiography due to fetal bradycardia detected during the routine ultrasound examination. Read More

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February 2022

Beta-Blocker-Related Atrioventricular Conduction Disorders-A Single Tertiary Referral Center Experience.

Medicina (Kaunas) 2022 Feb 20;58(2). Epub 2022 Feb 20.

Department of Internal Medicine, University of Medicine and Pharmacy "Grigore T. Popa" Iași, 700115 Iași, Romania.

: Drug-related bradyarrhythmia is a well-documented major adverse event among beta-blocker users and a potential cause for hospitalization or additional interventions. Whether beta-blocker use is associated with specific bradyarrhythmia presentations, and how this relates to other predisposing factors, is not well known. We aim to evaluate the association between beta-blocker use and the type of atrioventricular (AV) conduction disorder in patients with symptomatic bradycardia. Read More

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February 2022

Genotype-Phenotype Correlation in Familial Mutation Dilated Cardiomyopathy.

Genes (Basel) 2022 02 17;13(2). Epub 2022 Feb 17.

Department of Cardiology, Medical Academy, Lithuanian University of Health Sciences, LT-50161 Kaunas, Lithuania.

We report the case of a 22-year-old male who visited a cardiologist after the first episode of atrial fibrillation (AF). Echocardiography and magnetic resonance imaging revealed decreased left ventricular (LV) systolic function with dilated LV. An intermittent second-degree AV (atrioventricular) block was detected during 24 h Holter monitoring. Read More

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February 2022

Fetal heart rate tracing interpretation in cases of fetal heart block: A case series.

Clin Case Rep 2022 Feb 13;10(2):e05448. Epub 2022 Feb 13.

Faculty of Medicine Department of Obstetrics and Gynecology Chiang Mai University Chiang Mai Thailand.

Simple assessment of FHR baseline variability can differentiate second-degree heart block (SHB) from complete heart block (CHB). In cases of SHB, antepartum NST can be reliably used for fetal surveillance. Intrapartum assessment of FHR variability and accelerations is useful to select cases for safe vaginal delivery. Read More

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February 2022

Transient high-grade second-degree atrioventricular block secondary to transvenous atrial septal defect occlusion in a dog.

J Vet Cardiol 2022 Jan 31;41:30-38. Epub 2022 Jan 31.

The Heart Center, Nationwide Children's Hospital, 700 Children's Dr., Columbus, OH, 43205, USA.

A 1.2-year-old male-intact Standard Poodle underwent transvenous placement of an Amplazter™ atrial septal occluder for correction of a large secundum atrial septal defect. Thirty-six hours post-operatively, the dog developed high-grade Mobitz type II second-degree atrioventricular block, which resolved with time and corticosteroid administration by 12 days after the procedure. Read More

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January 2022

Electrocardiographic features of paradoxical ventriculophasic response.

J Electrocardiol 2022 Mar-Apr;71:67-73. Epub 2022 Feb 12.

Department of Cardiology, Central Japan International Medical Center, Gifu, Japan; Department of Cardiology, Graduate School of Medicine, Gifu University, Gifu, Japan; Department of Molecular Pathophysiology, Shinshu University Graduate School of Medicine, Matsumoto, Nagano 390-8621, Japan.

Background: Paradoxical ventriculophasic response (P-VR), a rare entity, has not been fully investigated. This study sought to compare the electrocardiographic features of P-VR and typical ventriculophasic response (T-VR).

Methods: The 12‑lead electrocardiogram (ECG) data recorded before implantation of a cardiac implantable electronic device were analyzed in patients with greater than second-degree atrioventricular block (AVB). Read More

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Clinical Outcomes of Non-Atrial Fibrillation Bradyarrhythmias Treated With a Ventricular Demand Leadless Pacemaker Compared With an Atrioventricular Synchronous Transvenous Pacemaker - A Propensity Score-Matched Analysis.

Circ J 2022 Jan 29. Epub 2022 Jan 29.

Division of Cardiology, Department of Internal Medicine, St. Marianna University School of Medicine.

Background: Implanting a ventricular demand leadless pacemaker (VVI-LPM) for patients with non-atrial fibrillation (AF) bradyarrhythmias such as sick sinus syndrome (SSS) or high-grade (i.e., second- or third-degree) atrioventricular (AV) block is not recommended unless they have limited vascular access or a high infection risk; nevertheless, an unexpectedly high number of VVI-LPM implantations have been performed. Read More

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January 2022

Clinical Spectrum of Channelopathy in Children with Primary Electrical Disease and Structurally Normal Hearts.

Genes (Basel) 2021 12 22;13(1). Epub 2021 Dec 22.

Departament of Electrocardiology, National Institute of Cardiology "Ignacio Chávez", Mexico City 14080, Mexico.

Sodium voltage-gated channel α subunit 5 (-mutations may cause an array of arrhythmogenic syndromes most frequently as an autosomal dominant trait, with incomplete penetrance, variable expressivity and male predominance. In the present study, we retrospectively describe a group of Mexican patients with -disease causing variants in whom the onset of symptoms occurred in the pediatric age range. The study included 17 patients with clinical diagnosis of primary electrical disease, at least one pathogenic or likely pathogenic mutation and age of onset <18 years, and all available first- and second-degree relatives. Read More

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December 2021

Sleep-disordered breathing as a risk factor for unnecessary pacemaker implantation.

Kardiol Pol 2022;80(2):191-197. Epub 2022 Jan 14.

Department of Electrocardiology, Upper-Silesian Medical Center, Katowice, Poland.

Background: Sleep-disordered breathing (SDB) is a risk factor for bradyarrhythmia, which is reversible with positive airway pressure therapy.

Aims: The study aims to evaluate the occurrence and number of severe sinus bradycardia and advanced atrioventricular block (AVB) in patients with cardiovascular diseases and SDB risk factors.

Methods: The analysis covered 207 patients with cardiovascular diseases aged 59. Read More

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Outcome of Antibody-Mediated Fetal Heart Disease With Standardized Anti-Inflammatory Transplacental Treatment.

J Am Heart Assoc 2022 02 8;11(3):e023000. Epub 2022 Jan 8.

The Hospital for Sick Children Toronto Ontario Canada.

Background Transplacental fetal treatment of immune-mediated fetal heart disease, including third-degree atrioventricular block (AVB III) and endocardial fibroelastosis, is controversial. Methods and Results To study the impact of routine transplacental fetal treatment, we reviewed 130 consecutive cases, including 108 with AVB III and 22 with other diagnoses (first-degree/second-degree atrioventricular block [n=10]; isolated endocardial fibroelastosis [n=9]; atrial bradycardia [n=3]). Dexamethasone was started at a median of 22. Read More

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February 2022

Different Concentrations of Ropivacaine under Ultrasound Guidance on Quadratus Lumbar Muscle Nerve Block in Elderly Patients with Hip Replacement.

Biomed Res Int 2021 22;2021:9911352. Epub 2021 Dec 22.

Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Medical University, Xi'an, Shan'xi Province, China.

Objective: To compare the effect of ropivacaine in different concentrations under ultrasound guidance on lumbar muscle nerve blocking in elderly patients undergoing hip replacement surgery.

Methods: 60 elderly patients underwent hip replacement in our hospital over a period of April to December of 2019 were equally randomized into control and observation groups, with 30 each. Patients in the control group and observation group received 0. Read More

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January 2022

Follow-Up Study of Electrocardiographic Indices in 252 Children with Ventricular Septal Defect after Minimally Invasive Transthoracic Closure.

Heart Surg Forum 2021 Dec 28;24(6):E1057-E1064. Epub 2021 Dec 28.

Dalian Women and Children's Medical Group, Dalian, Liaoning Province, China.

Objective: The aim of this study was to explore the efficacy and safety of minimally invasive transthoracic closure (MITC) in treating ventricular septal defect (VSD).

Methods: A total of 252 children with VSD were investigated between August 2013 and March 2015. Their electrocardiographic indices were monitored at different time points (before surgery [T0], immediately after surgery [T1], and 3 days/7 days/1 month/3 months/6 months after surgery [T2-6]) and followed up every year. Read More

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December 2021

Symptomatic second-degree atrioventricular block in a recreational athlete.

BMJ Case Rep 2021 Dec 8;14(12). Epub 2021 Dec 8.

Cardiology, Department of Medicine, Northumbria Healthcare NHS Foundation Trust, North Shields, UK.

This case study provides an example of bradycardia associated with an increase in exercise training in a recreational athlete. Although recognised among high-level endurance athletes, this case demonstrates the potential negative effects of exercise on the heart in a patient participating in the levels of exercise recommended by Public Health England. It adds weight to the ongoing discussion of the incomplete understanding of the level of exercise needed to induce pathological changes in cardiac physiology. Read More

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December 2021

Successful Prevention of Fetal Autoimmune-Mediated Heart Block by Combined Therapies With Hydroxychloroquine and Intravenous Immunoglobulin: A Case Report.

Front Cardiovasc Med 2021 12;8:759260. Epub 2021 Nov 12.

Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education, Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.

A fetal autoimmune-mediated atrioventricular block is a passively acquired autoimmune disease in which maternal autoantibodies enter the fetal circulation via the placenta and subsequently cause inflammation and fibrosis of the atrioventricular node. Once fetal autoimmune-mediated atrioventricular block occurs, it only takes a short time to progress from first-degree atrioventricular block to complete atrioventricular block, meaning that the damage is often irreversible. Autoimmune-associated AVB, a rare but life-threatening disorder, occurs in 2-5% of pregnancies with positive anti-Ro/SSA (the most common one) and La/SSB antibodies. Read More

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November 2021

Genome silencer therapy leading to 'regression' of cardiac amyloid load on cardiovascular magnetic resonance: a case report.

Eur Heart J Case Rep 2021 Nov 12;5(11):ytab415. Epub 2021 Oct 12.

Department of Cardiology I, Division of Cardiovascular Imaging, University Hospital Münster, Albert-Schweitzer-Campus 1, Building A1, 48149 Münster, Germany.

Background: Hereditary or variant transthyretin amyloidosis (ATTRv) is a progressive disease manifesting with neuropathy and/or cardiomyopathy. An early and accurate diagnosis of cardiac amyloidosis is a pre-requisite for timely and appropriate patient management, including anti-amyloid therapies, as it is associated with heart failure, conduction disease, and arrhythmias, leading to reduced quality of life and early death.

Case Summary: We present the case of an ATTRv male patient presenting with a mixed amyloidosis phenotype (neuropathy and cardiomyopathy). Read More

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November 2021

From trivial to severe arrhythmias: the diagnostic role of multimodality imaging in inflammatory cardiomyopathy through a case series.

Eur Heart J Case Rep 2021 Nov 20;5(11):ytab418. Epub 2021 Oct 20.

Arrhythmias Unit, Department of Cardiology, Centre Hospitalier Universitaire Vaudois, Rue du Bugnon 46, CH-1011 Lausanne, Switzerland.

Background: The diagnosis of inflammatory cardiomyopathy remains challenging in cases presenting with arrhythmia as sole manifestation. An early diagnosis is critical as it may prevent life-threatening complications such as sudden cardiac death and atrioventricular block (AVB). The diagnostic workup of suspected cases includes multimodality imaging that requires an adequate interpretation in order to limit the risk of overdiagnosis. Read More

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November 2021

Early pacemaker implantation for transcatheter aortic valve implantation is safe and effective.

Pacing Clin Electrophysiol 2022 Jan 26;45(1):103-110. Epub 2021 Dec 26.

Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, London, UK.

Background: Permanent pacemaker (PPM) implantation is a common complication of transcatheter aortic valve implantation (TAVI). The optimum timing of PPM implantation is still unclear as conduction abnormalities evolve and a balance needs to be struck between conservative delays in the hope of conduction recovery and overutilization of pacing. This study aimed to assess the safety and efficacy of early PPM implantation, without an observation period, among TAVI patients. Read More

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January 2022

[A patient with second-degree AV block-further work-up and treatment].

Herzschrittmacherther Elektrophysiol 2021 Dec 26;32(4):440-444. Epub 2021 Oct 26.

Abteilung für Elektrophysiologie, Herzzentrum der Uniklinik Köln, Kerpenerstraße 62, 59037, Köln, Deutschland.

We present the case of a 64-year-old man who presented to our outpatient clinic with intermittent palpitations and presyncopal events. In 2009, he underwent dual chamber pacemaker implantation in another institution for 2nd degree heart block. Pharmacological treatment attempts with β‑blocker, calcium channel antagonists and ivabradine remained clinically unsuccessful. Read More

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December 2021

Electrocardiography of Atrioventricular Block.

Card Electrophysiol Clin 2021 12 25;13(4):599-605. Epub 2021 Sep 25.

Cardiac Arrhythmia Service, St. Vincent Hospital, 8333 Naab Road, Indianapolis, IN 46260, USA; Duke University Medical Center, Durham, NC, USA.

Delayed atrioventricular (AV) conduction most commonly occurs in the AV node, resulting from AH prolongation on an intracardiac electrocardiogram and PR prolongation on a surface electrocardiogram. AV conduction may be blocked in a 2:1 manner, with a normal PR interval and wide QRS suggesting infranodal disease, whereas a prolonged PR interval and narrow QRS are more suggestive of AV nodal disease. Block within the His is suspected when there is 2:1 AV block with normal PR and QRS intervals. Read More

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December 2021

[Second-degree AV block type Mobitz I (Wenckebach) in a 49-year-old man with dilative cardiomyopathy].

Herzschrittmacherther Elektrophysiol 2021 Dec 20;32(4):435-439. Epub 2021 Oct 20.

Abteilung für Kardiologie und Metabolismus, Med. Klinik für Kardiologie, Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, Deutschland.

A 49-year-old man with dilated cardiomyopathy (left ventricular ejection fraction 50%, unremarkable left ventricular biopsy) developed atrioventricular conduction abnormalities (AV block II type Wenckebach) during exercise testing. Read More

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December 2021

Intermittent atrio-ventricular block and ectopy in an infant following complex heart surgery: Occam's razor versus Hickam's dictum.

J Arrhythm 2021 Oct 27;37(5):1380-1382. Epub 2021 Aug 27.

Division of Pediatric Cardiology/Electrophysiology Children's Hospital of Michigan Central Michigan University School of Medicine Detroit MI USA.

Concealed functional extra-systole manifesting as pseudo Mobitz Type II Second Degree A-V Block. Read More

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October 2021