967 results match your criteria Second-Degree Atrioventricular Block


Cardiac resynchronization therapy defibrillator: implant in a COVID-19 patient by an echo-guided axillary venous approach.

Future Cardiol 2022 Jun 23. Epub 2022 Jun 23.

Monsignor Dimiccoli Hospital, Cardiology, Barletta, Puglia, 76121, Italy.

The COVID-19 pandemic has seriously revolutionized the management of patients who need an implanted cardiac implantable electronic device. We report, for the first time, a successful cardiac resynchronization therapy defibrillator implantation procedure in an 82-year-old man affected by COVID-19, recent myocardial infarction, second-degree 2:1 atrioventricular block and left bundle branch block. Read More

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Reversal of Fetal Heart Block in Antibody-Positive Mother After Hydroxychloroquine and Dexamethasone.

Pediatr Cardiol 2022 Jun 14. Epub 2022 Jun 14.

Division of Pediatric Cardiology, Department of Pediatrics, University of Texas Southwestern Medical Center, 1935 Medical District Dr, Dallas, TX, 75235, USA.

Maternal autoantibody-related complete heart block in the fetus is considered irreversible. During prenatal care for a 25-year-old nulliparous Hispanic woman with newly diagnosed nephrotic-range proteinuria and positive anti-nuclear antigen antibody, complete fetal heart block with a ventricular rate of 60 beats per minute was detected on a fetal echocardiogram at 28-week gestation. A small pericardial effusion and ascites were noted consistent with fetal hydrops. Read More

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Meta-analysis of cardiovascular outcome trials assessing the impact of glucagon-like peptide-1 receptor agonists on major cardiac arrhythmias.

Acta Cardiol 2022 Jun 14:1-6. Epub 2022 Jun 14.

Third Department of Cardiology, Ippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.

Objective: Glucagon-like peptide-1 receptor agonists (GLP-1RAs), a group of novel antidiabetic agents, demonstrated beneficial cardiovascular effects in recent large, placebo-controlled randomised clinical trials (RCTs); their clear antiarrhythmic benefit has not been yet underlined. The purpose of the present meta-analysis is to clarify the impact of GLP-1RAs on different types of cardiac arrhythmias.

Methods: We searched PubMed from its inception up to 8 October 2020 for all available cardiovascular and renal outcome, placebo-controlled RCTs utilising GLP-1RAs versus placebo. Read More

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A Case of Lyme Carditis With Variable Heart Block Successfully Treated With Oral Doxycycline.

Cureus 2022 May 4;14(5):e24729. Epub 2022 May 4.

Infectious Disease, Keesler Medical Center, Biloxi, USA.

A 39-year-old male without significant past medical history presented with three weeks of worsening fatigue, migratory arthralgia, rash, and unilateral facial weakness after spending three months in Vermont. Serology showed positive Lyme titers 1:64 for both IgM and IgG. EKG on presentation showed a P-R interval of 384 ms, and the patient was admitted for concern of Lyme carditis. Read More

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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 12:101247. Epub 2022 May 12.

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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Electrocardiographic characteristics of trained and untrained standardbred racehorses.

J Vet Intern Med 2022 May 30;36(3):1119-1130. 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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Spontaneous closure of a traumatic acquired Gerbode defect in a dog.

J Vet Cardiol 2022 Mar 16;41:194-198. Epub 2022 Mar 16.

Queen's Veterinary School Hospital, Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK. Electronic address:

A one-year-old female English Springer Spaniel with no previous history of cardiac disease presented to the Queen's Veterinary School Hospital following a blunt traumatic incident with an acquired, direct Gerbode defect and associated third-degree atrioventricular block. Two months after the initial incident, follow-up echocardiography showed a nearly closed Gerbode defect with just trivial residual flow. A 24-h Holter monitor indicated second-degree atrioventricular block with occasional junctional tachycardia. 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 04;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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Rare but significant cognitive effects of second-degree atrioventricular block.

Indian Pacing Electrophysiol J 2022 May-Jun;22(3):158-160. Epub 2022 Mar 22.

Department of Cardiology, Northern Hospital, Epping, 3076, VIC, Australia; Department of Medicine, University of Melbourne, Parkville, 3010, VIC, Australia; Department of Cardiology, Austin Health, 145 Studley Road, Heidelberg, 3084, VIC, Australia.

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Scrub typhus manifesting as electrocardiographic disturbance: A case report and review of literature.

Turk J Emerg Med 2022 Jan-Mar;22(1):47-50. Epub 2022 Jan 20.

Department of General Medicine, Government Medical College and Hospital, Chandigarh, India.

Scrub typhus (ST) has wide organ system involvement, but cardiac involvement is paramount in this spectrum due to early hemodynamic compromise. Various forms of cardiac involvement have been described in the literature, but we are describing rare electrocardiographic changes in the ST infection. A young male presented in our emergency department with complaints of restlessness and vomiting of 2 days' duration. Read More

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January 2022

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

Epicardial pacemaker implantation and outcome in eight pet ferrets (Mustela putorius furo).

J Vet Cardiol 2022 Feb 2;41:44-56. Epub 2022 Feb 2.

Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS, 66506, USA.

Introduction/objectives: Minimal information exists regarding epicardial pacemaker (EP) implantation in pet ferrets (Mustela putorius furo). The objectives were to describe the indications, surgical technique, and outcome of EP implantation in ferrets for the treatment of advanced atrioventricular block (AVB).

Animals, Materials, And Methods: Eight client-owned ferrets presenting to five veterinary referral centers. 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

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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Single-Chamber Leadless Cardiac Pacemaker in Patients Without Atrial Fibrillation: Findings From Campania Leadless Registry.

Front Cardiovasc Med 2021 14;8:781335. Epub 2022 Jan 14.

Cardiology Unit, Department of Medical Translational Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy.

Introduction: Little is known about the clinical performance of single-chamber leadless pacemaker (LLPM) in patients without atrial fibrillation (AF) as pacing indication. The aim of this study was to describe the clinical characteristics of patients who underwent single chamber LLPM implantation at three tertiary referral centers and to compare the safety and effectiveness of the single-chamber LLPM among patients with or without AF.

Materials And Methods: All the consecutive patients who underwent LLPM implantation at three referral centers were analyzed. Read More

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January 2022

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

Impact of Arrhythmia in Hospital Mortality in Acute Ischemic Stroke Patients: A Retrospective Cohort Study in Northern Mexico.

J Stroke Cerebrovasc Dis 2022 Feb 16;31(2):106259. Epub 2021 Dec 16.

Department of Neurology, University Hospital "Dr José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, México. Electronic address:

Background: Atrial fibrillation has been associated with higher morbidity and mortality rates in acute ischemic stroke patients (AIS). However, there is scarce information regarding the clinical outcomes and strokes' characteristics among AIS patients with other type of arrhythmias.

Objective: Our study aims to analyze the hospital mortality rate, stroke characteristics, and clinical and demographical data of patients with any post-stroke arrhythmia. Read More

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February 2022

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

Pacemaker Lead Migration and Ventricular Perforation in a Patient Presenting with Chest Pain.

Clin Pract Cases Emerg Med 2021 Nov;5(4):479-481

Aventura Hospital & Medical Center, Department of Critical Care Medicine, Aventura, Florida.

Case Presentation: We describe a middle-age male with a past medical history of second-degree atrioventricular block type II status post permanent pacemaker placement the day prior who presented to the emergency department complaining of chest pain. Electrocardiography showed a non-paced ventricular rhythm. Chest radiograph showed the ventricular pacemaker lead located distally overlying the right ventricle apical area. Read More

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November 2021

Characteristics of the Dynamic Electrocardiogram in the Elderly with Nonvalvular Atrial Fibrillation Combined with Long R-R Intervals.

Evid Based Complement Alternat Med 2021 10;2021:4485618. Epub 2021 Nov 10.

ECG Diagnosis Department, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China.

Objective: To investigate the characteristics of dynamic electrocardiogram and their clinical implications in elderly patients with nonvalvular atrial fibrillation combined with long R-R intervals.

Methods: Elderly patients diagnosed with nonvalvular atrial fibrillation who were admitted as an inpatient or attended the outpatient department from January 2015 to January 2020 were selected. Patients were divided into two groups based on the presence of a long R-R interval. Read More

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November 2021

[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

Childhood Bradycardia Associates With Atrioventricular Conduction Defects in Older Age: A Longitudinal Birth Cohort Study.

J Am Heart Assoc 2021 10 25;10(19):e021877. Epub 2021 Sep 25.

University College London (UCL) Medical Research Council (MRC) Unit for Lifelong Health and AgeingUniversity College London London United Kingdom.

Background This study explored the association between childhood bradycardia and later-life cardiac phenotype using longitudinal data from the 1946 National Survey of Health and Development (NSHD) birth cohort. Methods and Results Resting heart rate was recorded at 6 and 7 years of age to provide the bradycardia exposure defined as a childhood resting heart rate <75 bpm. Three outcomes were studied: (1) echocardiographic data at 60 to 64 years of age, consisting of ejection fraction, left ventricular mass index, myocardial contraction fraction index, and E/e'; (2) electrocardiographic evidence of atrioventricular or ventricular conduction defects by 60 to 64 years of age; and (3) all-cause and cardiovascular mortality. Read More

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October 2021

Second-degree atrioventricular block after administration of methylergometrine for treatment of uterine atony during cesarean section.

Rev Esp Anestesiol Reanim (Engl Ed) 2021 Oct 11;68(8):487-490. Epub 2021 Sep 11.

Servicio de Anestesiología y Reanimación, Complejo Hospitalario Universitario de Canarias, San Cristóbal de La Laguna, Santa Cruz de Tenerife, Spain.

Mortality due to cardiovascular disease in pregnancy is a growing problem in developed countries, being nowadays the leading cause of maternal death. Within this group, the most common cause of death are congenital or acquired heart diseases, representing a challenge in the management of these patients, since the pregnancy-related physiological alterations can impair their basal condition and treatment. We present the case of a 34-year-old patient, without any relevant pathological antecedents, who developed a second-degree atrioventricular block, Mobitz type I, following the administration of methylergometrine during cesarean section due to failure to progress in labour. Read More

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October 2021