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An Unusual Case of Paroxysmal Third-Degree Atrioventricular Block: Thinking Outside the Box.
Cureus
June 2024
Department of Cardiology, St. Barnabas Hospital Health System, Bronx, USA.
During the assessment of a third-degree atrioventricular (AV) block in a patient with syncope, different etiologies should be considered and evaluated. Extrinsic vagal paroxysmal AV block, extrinsic idiopathic AV block and intrinsic paroxysmal AV block are among the types of third-degree AV block in the differential diagnoses. Extrinsic vagal paroxysmal third-degree atrioventricular block (EV-AVB) is linked to parasympathetic influence on cardiac conduction and can be observed in bladder distention and urinary retention.
View Article and Find Full Text PDFDiagnosis and treatment of recurrent syncope in a middle-aged women.
Ann Noninvasive Electrocardiol
March 2024
The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
A 50-year-old female patient, presented with repeated syncope for more than 2 years. Prior assessments were conducted at different hospitals, but no definite abnormalities were found. The patient's fear and anxiety about possible future attacks were escalating.
View Article and Find Full Text PDFThird-degree atrioventricular block with narrow QRS complexes in a case of hypoadrenocorticism in a dog.
J Small Anim Pract
July 2022
Langford Vets Small Animal Referral Hospital, Langford, Bristol BS40 5DU, UK.
A 4-year-old dog presented with lethargy and bradycardia (heart rate 40 bpm). Electrocardiogram diagnosed third-degree atrioventricular block with narrow QRS complexes. An atropine response test did not result in a change of the heart rate.
View Article and Find Full Text PDFA thymic hyperplasia-related reversible complete atrioventricular block: When compression is more important than compressor.
J Electrocardiol
December 2021
Division of Cardiology, "Tor Vergata" University Hospital, 00133 Rome, Italy; Department of Biomedicine and Prevention, "Tor Vergata" University of Rome, 00133 Rome, Italy.
A 19-year-old patient presented for syncope with third-degree AV block (TDAVB) at ECG. A chest-CT showed a thymic mass that could be responsible for TDAVB due to extrinsic vagal nerve compression. Thymectomy led to complete AV block resolution.
View Article and Find Full Text PDFThird-Degree Heart Block Associated With Saddle Pulmonary Embolism: A Rare Sequelae of COVID-19-Induced Hypercoagulable State.
Cureus
July 2021
Internal Medicine, University of Central Florida School of Medicine/Hospital Corporation of America (HCA) Graduate Medical Education Consortium/North Florida Regional Medical Center, Gainesville, USA.
The pathophysiology of coronavirus disease 2019 (COVID-19) involves multi-organ dysfunction, particularly involving the respiratory, cardiovascular and hematological systems. This dysfunction is partly due to systemic inflammation causing a wide array of pathological sequelae thus posing a significant challenge to management despite the advances in treatment made thus far. In this report, we present a COVID-19 patient who developed a transient complete heart block and was temporarily paced as a complication of a saddle pulmonary embolus (PE).
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