To ascertain whether the long cardiac pauses on the Holter ECGs of patients with the sick sinus syndrome were related to the spontaneously occurring overdrive suppression, the heart rates for the 12 seconds preceding the cardiac pauses longer than 5 seconds were compared with that averaged for 24 hours. Even in six out of seven patients with bradycardia-tachycardia syndrome the former rate was not significantly greater than the latter, indicating that episodes of such long cardiac pauses may not result from spontaneously occurring overdrive suppression. This observation was also consistent with the result that no statistically significant correlation was obtained between the maximum pauses measured from Holter ECGs of sick sinus syndrome and those obtained by the overdrive suppression test. In conclusion, many episodes of long life-threatening cardiac pauses observed in sick sinus syndrome may be attributed to accidental depression of the sinus nodal and subsidiary pacemaker activity rather than to spontaneously occurring overdrive suppression; therefore, Holter monitoring may be useful as an additional tool for diagnosis of sick sinus syndrome.
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http://dx.doi.org/10.1016/0002-8703(83)90482-9 | DOI Listing |
Cureus
January 2025
Emergency Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, USA.
Anticholinergic toxicity typically presents with symptoms of cutaneous vasodilation, delirium, mydriasis, urinary retention, hyperthermia, anhidrosis, and tachycardia. This case report presents a 68-year-old female patient who exhibited some of these signs and symptoms after ingesting an unknown quantity of dicyclomine. However, she displayed one notable exception to the classic toxidrome.
View Article and Find Full Text PDFCureus
December 2024
Department of Anaesthesiology, Seirei Hamamatsu General Hospital, Hamamatsu, JPN.
One-lung ventilation is commonly used in lateral open chest surgery; however, it can increase pulmonary vascular resistance, which negatively affects Fontan circulation. Nevertheless, one-lung ventilation has a positive indication in post-Fontan patients. It allows surgery with lateral minimally invasive thoracotomy, which does not require a median sternotomy.
View Article and Find Full Text PDFBMC Cardiovasc Disord
January 2025
Department of Hematology and Oncology, Shenzhen Children's Hospital of China Medical University, Shenzhen, 518038, China.
Purpose: Pacemaker-related infections are serious complications of cardiac implantable electronic devices (CIEDs). This case report aims to describe the occurrence of pacemaker pocket infection and recurrent ventricular tachycardia (VT) in a Chinese amateur violinist with sick sinus syndrome (SSS), and to explore the possible connection between occupational habits and the infection, as well as VT.
Methods: A 76-year-old male violinist with a Biotronik Evia DR dual-chamber pacemaker presented with syncope and signs of a pacemaker pocket infection three years after implantation.
Zhonghua Er Ke Za Zhi
February 2025
Department of Cardiology, Shanghai Children's Medical Center Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
Eur Heart J Case Rep
January 2025
Department of Cardiology, Hyogo Prefectural Awaji Medical Center, Sumoto, Japan.
Background: Atrial infarction is a complication of myocardial infarction with ventricular infarction; however, isolated atrial infarction (IAI) has rarely been reported. Herein, we report a case of IAI associated with sick sinus syndrome and atrial fibrillation (AF).
Case Summary: An 83-year-old woman was brought to the emergency department with a complaint of general malaise.
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