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Related Concept Videos

Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
Dysrhythmias I: Introduction01:15

Dysrhythmias I: Introduction

Dysrhythmias refers to abnormalities in the heart's rhythm. They result from disruptions in the heart's electrical conduction system, which includes the sinoatrial(SA)node, atrioventricular(AV) node, the bundle of His, bundle branches, and Purkinje fibers.Definition and PathophysiologyDysrhythmias result from disorders of impulse formation, impulse conduction, or both. The heart contains specialized cells in the sinoatrial node, atrioventricular node, and the bundle of His and Purkinje fibers...
Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

Arrhythmias are disturbances in the heart's rhythm that lead to abnormal heartbeats. These irregularities can originate from different parts of the heart and are classified based on their origin and nature.
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism, and...
Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...
Coronary Artery Disease III: Clinical Manifestations01:30

Coronary Artery Disease III: Clinical Manifestations

Coronary Artery Disease (CAD) is a primary health risk worldwide, leading to significant morbidity and mortality. The condition arises from the buildup of atherosclerotic plaques within the coronary arteries, resulting in diminished blood supply to the heart muscle.The clinical manifestations of CAD vary widely, from asymptomatic stages to severe, life-threatening conditions. Understanding these manifestations is crucial for early diagnosis and effective management.Angina Pectoris: The Warning...

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Related Experiment Video

Updated: Jun 11, 2026

Dual-Dye Optical Mapping of Hearts from RyR2R2474S Knock-In Mice of Catecholaminergic Polymorphic Ventricular Tachycardia
09:36

Dual-Dye Optical Mapping of Hearts from RyR2R2474S Knock-In Mice of Catecholaminergic Polymorphic Ventricular Tachycardia

Published on: December 22, 2023

Relationship between root caries and cardiac dysrhythmia.

Masayuki Kaneko1, Akihiro Yoshihara, Hideo Miyazaki

  • 1Division of Preventive Dentistry, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University, Gakkocho-Dori, Chuo-ku, Niigata, Japan.

Gerodontology
|July 9, 2010
PubMed
Summary

Root caries in non-smoking elderly individuals are linked to an increased risk of cardiac dysrhythmia. This study highlights a significant association between oral health and heart rhythm in older adults.

Related Experiment Videos

Last Updated: Jun 11, 2026

Dual-Dye Optical Mapping of Hearts from RyR2R2474S Knock-In Mice of Catecholaminergic Polymorphic Ventricular Tachycardia
09:36

Dual-Dye Optical Mapping of Hearts from RyR2R2474S Knock-In Mice of Catecholaminergic Polymorphic Ventricular Tachycardia

Published on: December 22, 2023

Area of Science:

  • Gerontology
  • Cardiology
  • Oral Health

Background:

  • Cardiac dysrhythmia is common in the elderly due to aging and conduction system disease.
  • Previous research suggests a link between dental issues and heart events, but evidence is limited.
  • This study addresses the unproven hypothesis connecting root caries and cardiac dysrhythmia.

Purpose of the Study:

  • To investigate the relationship between root caries and cardiac dysrhythmia in an elderly population.
  • To explore potential links between oral health and cardiovascular health in older adults.

Main Methods:

  • A 4-year longitudinal study of 233 dentate elderly subjects (out of 600) with annual oral examinations and electrocardiograms.
  • Analysis of covariance (ancova) used to compare root caries sites based on C-reactive protein (CRP) levels.
  • Logistic regression analysis performed to assess the association between root caries and cardiac dysrhythmia.

Main Results:

  • Higher C-reactive protein (CRP) serum levels correlated significantly with more root caries sites (p < 0.001).
  • Root caries incidence was significantly associated with cardiac dysrhythmia in non-smokers (odds ratio, 5.84; p = 0.040).

Conclusions:

  • Non-smoking elderly individuals with root caries lesions face an elevated risk of developing dysrhythmias.
  • The findings suggest a notable connection between root caries and the incidence of cardiac dysrhythmias in older, non-smoking populations.