A 54-year-old man with normal atrioventricular (AV) conduction at rest gave a 4-year history of presyncope during exercise. Treadmill testing showed exercise induced AV block. Electrophysiological study demonstrated rate dependent infranodal AV block and abnormal refractory period of the His-Purkinje system. The gap phenomenon in AV conduction occurred during the programmed stimulation. Supernormal conduction could be considered as the mechanism of the gap phenomenon in this patient.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/j.1540-8159.2000.tb00840.x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Time persistence of the fMRI resting-state functional brain networks.
J Neurosci
January 2025
The Gonda Multidisciplinary Brain Research Center, Bar Ilan University, Ramat Gan, 52900, Israel
Time persistence is a fundamental property of many complex physical and biological systems; thus understanding the phenomenon in the brain is of high importance. Time persistence has been explored at the level of stand-alone neural time-series, but since the brain functions as an interconnected network, it is essential to examine time persistence at the network level. Changes in resting-state networks have been previously investigated using both dynamic (i.
View Article and Find Full Text PDFMeasurement of population agglomeration, dynamic change characteristics, and motivations in metropolitan agglomerations-A case study of the Xi'an metropolitan area.
PLoS One
January 2025
School of Management, Xi'an Polytechnic University, Xi'an, Shaanxi, China.
This article compares the population agglomeration characteristics of the Xi'an metropolitan area in western China with those of metropolitan areas in other regions officially approved by the Chinese government. The kernel density estimation method and Markov chain model were used to conduct the study. The results revealed that from 2010 to 2020, the population agglomeration level of the Xi'an metropolitan area showed a trend of first increasing and then decreasing.
View Article and Find Full Text PDFNutritional state-dependent modulation of insulin-producing cells in .
Elife
January 2025
Neurobiology and Genetics, Theodor-Boveri-Institute, Biocenter, Julius-Maximilians-University of Würzburg, Würzburg, Germany.
Insulin plays a key role in metabolic homeostasis. insulin-producing cells (IPCs) are functional analogues of mammalian pancreatic beta cells and release insulin directly into circulation. To investigate the in vivo dynamics of IPC activity, we quantified the effects of nutritional and internal state changes on IPCs using electrophysiological recordings.
View Article and Find Full Text PDFHonduran nursing care to pressure injuries in patients with invasive mechanical ventilation: A qualitative study.
Belitung Nurs J
January 2025
College of Nursing, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan.
Background: Although substantial evidence exists regarding the treatment of pressure ulcers, there is a lack of studies demonstrating a comprehensive nursing approach for managing pressure ulcers in the ICU, particularly among patients with invasive mechanical ventilation from developing countries like Honduras. This gap in research is significant as the risk and impact of pressure ulcers on health recovery cannot be disregarded.
Objective: This study aimed to analyze Honduran nursing care for pressure ulcers in patients with invasive mechanical ventilation admitted to Intensive Care Units.
Assessing safety culture and second victim experience following adverse events among Romanian nurses: a cross-sectional study.
BMC Nurs
January 2025
Faculty of Political, Administrative and Communication Sciences, Department of Public Health, Babeș-Bolyai University, Cluj-Napoca, Romania.
Background: Healthcare adverse events (AEs) significantly impact professionals, often leading to emotional distress and lasting effects. This study investigates the impact of AEs on healthcare professionals in Romania, focusing on nurses to examine their experiences within the patient safety culture and the psychological consequences of AEs. With a limited body of research on patient safety, adverse events, and second victims (SVs) in Romania, this study addresses a crucial gap, highlighting the need for enhanced safety culture and support mechanisms for SVs.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!