Environmental Fe, Ti, Al, Cu, Hg, Bi, and Si Nanoparticles in the Atrioventricular Conduction Axis and the Associated Ultrastructural Damage in Young Urbanites: Cardiac Arrhythmias Caused by Anthropogenic, Industrial, E-Waste, and Indoor Nanoparticles

2021 ◽  
Author(s):  
Lilian Calderón-Garcidueñas ◽  
Angélica González-Maciel ◽  
Rafael Reynoso-Robles ◽  
José Luis Rodríguez-López ◽  
Hector G. Silva-Pereyra ◽  
...  
Keyword(s):  
Cardiac Arrhythmias ◽  
Atrioventricular Conduction ◽  
Si Nanoparticles ◽  
Ultrastructural Damage

scholarly journals Illustrations of the heart by Arthur Keith: His work with James Mackenzie on the pathophysiology of the heart 1903–08

2021 ◽  
pp. 096777202098022
Author(s):  
Peter D Mohr
Keyword(s):  
Cardiac Arrhythmias ◽  
Conduction System ◽  
Atrioventricular Conduction ◽  
Cardiac Arrythmias ◽  
The University ◽  
University Of Manchester

The University of Manchester Museum of Medicine and Health holds a collection of drawings of human hearts by anatomist Sir Arthur Keith (1866–1955). The specimens were provided by the cardiologist, Sir James Mackenzie (1853–1925) who was using a polygraph to investigate patients with cardiac arrhythmias. Keith’s dissections helped to establish the anatomy and pathology of the atrioventricular conduction system and assisted Mackenzie to interpret his polygraph recordings and understand the origin of cardiac arrythmias.

ANATOMY OF THE ATRIOVENTRICULAR NODE AND ATRIOVENTRICULAR CONDUCTION SYSTEM

2003 ◽  
Vol 13 (12) ◽  
pp. 3665-3674 ◽  
Author(s):  
SIEW YEN HO ◽  
KAREN P. McCARTHY ◽  
ANEEL ANSARI ◽  
PENNY S. THOMAS ◽  
DAMIAN SÁNCHEZ-QUINTANA
Keyword(s):  
Cardiac Arrhythmias ◽  
Right Atrium ◽  
Atrioventricular Node ◽  
Ventricular Myocardium ◽  
Conduction System ◽  
Atrioventricular Conduction ◽  
Laboratory Animals ◽  
Atrial Myocardium ◽  
The Right

The anatomy of the atrioventricular conduction system was first described nearly a hundred years ago. Since then, it has been an occasional subject of controversy mainly through a lack of adherence to the original definitions based on histology. The gross landmarks for locating the atrial component of the conduction system are found in the right atrium. The components and structure of the system in human are comparable to that found in commonly used laboratory animals. The conduction system is composed of specialized myocytes. Its atrial component, the atrioventricular node, is in contact with atrial myocardium. Having penetrated the atrioventricular insulating plane, the major ventricular bundles are encased in fibrous sheaths that separate the specialized myocytes from the ordinary myocardium. Only at the distal ramifications of the bundle branches do the fibrous sheaths disappear, allowing continuity with ventricular myocardium. Being the only muscular pathway connecting atrial with ventricular myocardium, knowledge of its structure can help in developing potential therapies for some forms of cardiac arrhythmias.

scholarly journals A collection of illustrations of the heart by Arthur Keith, and his work with James Mackenzie on the pathophysiology of the heart 1903–1908

2021 ◽  
pp. 096777202098505
Author(s):  
Peter D Mohr
Keyword(s):  
Cardiac Arrhythmias ◽  
Conduction System ◽  
Atrioventricular Conduction ◽  
Cardiac Arrythmias ◽  
The University ◽  
University Of Manchester

The University of Manchester Museum of Medicine and Health holds of collection of drawings of human hearts by anatomist Sir Arthur Keith (1866–1955). The specimens were provided by the cardiologist, Sir James Mackenzie (1853–1925) who was using a polygraph to investigate patients with cardiac arrhythmias. Keith’s dissections helped to establish the anatomy and pathology of the atrioventricular conduction system and assisted Mackenzie to interpret his polygraph recordings and understand the origin of cardiac arrythmias.

Sleep and cardiac arrhythmias

1972 ◽  
Vol 130 (5) ◽  
pp. 751-753 ◽  
Author(s):  
R. Smith
Keyword(s):  
Cardiac Arrhythmias

Cardiac arrhythmias related to psychiatric medication

2017 ◽  
Vol 36 (09) ◽  
pp. 747-750
Author(s):  
R. W. Freudenmann ◽  
C. Schönfeldt-Lecuona ◽  
B. J. Connemann ◽  
M. Gahr ◽  
M. Elsayed
Keyword(s):  
Cardiac Arrhythmias ◽  
Torsade De Pointes ◽  
General Medicine ◽  
Fold Increase ◽  
Cardiac Risk ◽  
Psychiatric Medication ◽  
Cardiac Side Effects ◽  
Torsade De Pointes Tachycardia ◽  
Multiple Drugs ◽  
Available Information

SummaryThis narrative review summarizes current available information about cardiac arrhythmias (QT prolongation, Torsade de pointes Tachycardia [TdP], sudden cardiac death) associated with psychiatric medication. Among the most commonly used antipsychotics, amisulpride and ziprasidone are most frequently associated with TdP. Treatment with some antidepressants (SSRIs, tricyclic antidepressants) is associated with a 5- to 6-fold increase in the incidence of out-of-hospital cardiac arrest. Lithium is associated with bradycardia, T-wave changes and AV-block; anxiolytics of the benzodiazepine group do usually not have cardiac side effects. The combination of multiple drugs (including medications from general medicine) that prolong the QT interval has a particularly high cardiac risk.

Entrainment and Annihilation of Reentrant Excitation in a Periodically Stimulated Ring of Excitable Media

1997 ◽  
Vol 36 (04/05) ◽  
pp. 290-293
Author(s):  
L. Glass ◽  
T. Nomura
Keyword(s):  
Cardiac Arrhythmias ◽  
Initial Phase ◽  
Human Heart ◽  
Periodic Wave ◽  
Excitable Media ◽  
One Dimensional ◽  
Clinical Observations ◽  
Periodic Stimulation ◽  
Reentrant Excitation ◽  
Stimulation Of

Abstract:Excitable media, such as nerve, heart and the Belousov-Zhabo- tinsky reaction, exhibit a large excursion from equilibrium in response to a small but finite perturbation. Assuming a one-dimensional ring geometry of sufficient length, excitable media support a periodic wave of circulation. As in the periodic stimulation of oscillations in ordinary differential equations, the effects of periodic stimuli of the periodically circulating wave can be described by a one-dimensional Poincaré map. Depending on the period and intensity of the stimulus as well as its initial phase, either entrainment or termination of the original circulating wave is observed. These phenomena are directly related to clinical observations concerning periodic stimulation of a class of cardiac arrhythmias caused by reentrant wave propagation in the human heart.

Does valproic acid cause cardiac arrhythmias, in particular QT-prolongations, as possible SUDEP risk factor?

2006 ◽  
Vol 37 (06) ◽  
Author(s):  
A Fues ◽  
S Vlaho ◽  
M Baz Bartels ◽  
V Boda ◽  
S Dittrich ◽  
...  
Keyword(s):  
Valproic Acid ◽  
Risk Factor ◽  
Cardiac Arrhythmias
Sign in / Sign up

Export Citation Format

Share Document