With the availability of reliable transvenous atrial leads and advances in electronic and battery technology, pacing for the restoration of the atrioventricular sequence has become practicable. This paper presents (1) a historical review of physiological cardiac pacing, and (2) a functional description of pacemakers currently available or in clinical validation. The indications and limitations of use for each is discussed on the basis of clinical experience in 176 patients. Predictions are made for future application of sophisticated pacemaker systems after the remaining clinical and technological barriers are overcome.
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http://dx.doi.org/10.1111/j.1540-8159.1980.tb04331.x | DOI Listing |
J Clin Monit Comput
January 2025
Department of Electrical Engineering, Eindhoven University of Technology, Groene Loper 3, 5612 AZ, Eindhoven, the Netherlands.
Unobtrusive pulse rate monitoring by continuous video recording, based on remote photoplethysmography (rPPG), might enable early detection of perioperative arrhythmias in general ward patients. However, the accuracy of an rPPG-based machine learning model to monitor the pulse rate during sinus rhythm and arrhythmias is unknown. We conducted a prospective, observational diagnostic study in a cohort with a high prevalence of arrhythmias (patients undergoing elective electrical cardioversion).
View Article and Find Full Text PDFJ Mol Histol
January 2025
Department of Thoracic Surgery, Lung Cancer Diagnosis and Treatment Center of Dalian, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China.
Malignant tumors are among the major diseases threatening human survival in the world, and advancements in medical technology have led to a steady increase in their detection rates worldwide. Despite unique clinical presentations across the spectrum of malignancies, treatment modalities generally adhere to common strategies, encompassing primarily surgical intervention, radiation therapy, chemotherapy, and targeted treatments. Uncovering the genetic elements contributing to cancer cell proliferation, metastasis, and drug resistance remains a pivotal pursuit in the development of novel targeted therapeutics.
View Article and Find Full Text PDFProg Cardiovasc Dis
January 2025
Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington, DC, United States. Electronic address:
Ischemic heart disease is the most common cardiovascular cause of death in women worldwide. Obstructive coronary atherosclerosis is the primary cause of myocardial infarction (MI), however, non-atherosclerotic mechanisms of MI, such as spontaneous coronary artery dissection, vasospasm, microvascular dysfunction, embolization, inflammation, coronary anomalies, infectious and infiltrative causes are increasingly being recognized. Emerging data suggest that women are two to five times more likely to have an MI in the absence of coronary atherosclerosis compared to men, but they continue to remain underdiagnosed and undertreated, partly due to underdiagnosis and limited understanding of these mechanisms.
View Article and Find Full Text PDFTop Companion Anim Med
January 2025
Department of Small Animal Clinic, Centre of Rural Sciences, Federal University of Santa Maria (UFSM), Rio Grande do Sul State, Brazil.
Few studies today address trans-operative analgesia provided by tramadol without local anesthetics for intra-abdominal procedures. The objective of this study was to assess the efficacy of trans-operative analgesia provided by epidurally administered tramadol in cats undergoing elective ovariohysterectomy. For this purpose, 16 healthy queens were randomly assigned to participate in one of two groups: GC, control group, 0.
View Article and Find Full Text PDFCardiovasc Pathol
January 2025
Research Unit of Biomedicine and Internal Medicine, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, Finland. Electronic address:
Background: Data on the occurrence of unexpected sudden cardiac death (SCD) in different seasons are limited.
Methods: All unexpected sudden death victims have to undergo medico-legal autopsy obligated by the Finnish law. Consecutive series of all unexpected autopsied SCD victims (n=5,869) were prospectively collected from the geographically defined area in the Northern Finland during a twenty years period from 1998 to 2017.
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