Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

428
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...
428
Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

735
Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
735
Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

5.3K
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...
5.3K
Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

788
Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
788
Pulse rhythm01:30

Pulse rhythm

1.7K
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
1.7K
Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

709
Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per...
709

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Adjacent-room dual-console Remote Surgical Training (ReST) with takeover capability on the da Vinci Xi: a porcine-model feasibility study.

Journal of robotic surgery·2026
Same author

Multicentric basal cell carcinoma of the penis and scrotum: a rare case report.

Journal of surgical case reports·2025
Same author

Association Between Baseline Neutrophil-to-Lymphocyte Ratio and Short-Term Urinary Quality of Life During BCG Induction in Male Patients with Non-Muscle-Invasive Bladder Cancer: A Prospective Observational Study.

Journal of clinical medicine·2025
Same author

Apalutamide Monotherapy in Metastatic Hormone-Sensitive Prostate Cancer: A Viable Alternative to First-Generation Anti-Androgen Agents to Avoid the Flare Phenomenon and an Effective Treatment for Achieving Early PSA Response.

Cancers·2025
Same author

Serotonin does not seem to play a major role in eliciting vasovagal syncope.

Clinical autonomic research : official journal of the Clinical Autonomic Research Society·2024
Same author

Medicines in pregnancy: A clinical pharmacology extrapolation framework to address knowledge gaps.

CPT: pharmacometrics & systems pharmacology·2024

Related Experiment Video

Updated: Apr 29, 2026

Design and Analysis for Fall Detection System Simplification
08:05

Design and Analysis for Fall Detection System Simplification

Published on: April 6, 2020

12.6K

Differential diagnosis between 'unexplained' fall and syncopal fall: a difficult or impossible task.

Paolo Alboni1, Paola Coppola, Nicola Stucci

  • 1aSection of Cardiology bDivision of Medicine, Ospedale Privato Quisisana, Ferrara, Italy.

Journal of Cardiovascular Medicine (Hagerstown, Md.)
|May 20, 2014
PubMed
Summary

Unexplained falls in older adults may stem from reflex syncope, a cause often missed due to amnesia. Current multifactorial treatments, tested on mixed fall groups, may not be effective for these specific syncope-related falls.

More Related Videos

Author Spotlight: Innovations in iTUG Test for Enhanced Risk Assessment and Cognitive Insights
05:26

Author Spotlight: Innovations in iTUG Test for Enhanced Risk Assessment and Cognitive Insights

Published on: October 25, 2024

1.9K
Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
14:09

Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance

Published on: March 21, 2013

20.7K

Related Experiment Videos

Last Updated: Apr 29, 2026

Design and Analysis for Fall Detection System Simplification
08:05

Design and Analysis for Fall Detection System Simplification

Published on: April 6, 2020

12.6K
Author Spotlight: Innovations in iTUG Test for Enhanced Risk Assessment and Cognitive Insights
05:26

Author Spotlight: Innovations in iTUG Test for Enhanced Risk Assessment and Cognitive Insights

Published on: October 25, 2024

1.9K
Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
14:09

Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance

Published on: March 21, 2013

20.7K

Area of Science:

  • Gerontology
  • Neurology
  • Cardiology

Background:

  • Falls are common in older adults, categorized as accidental or unexplained.
  • Syncope, a transient loss of consciousness, can cause falls but is often misdiagnosed due to amnesia of preceding symptoms.
  • Current guidelines recommend multifactorial assessment and treatment for falls, but evidence is based on mixed patient populations.

Purpose of the Study:

  • To investigate the underlying causes of unexplained falls in older adults.
  • To determine the prevalence of reflex syncope with retrograde amnesia in patients experiencing unexplained falls.
  • To evaluate the efficacy of current fall treatments in this specific patient subgroup.

Main Methods:

  • Review of randomized studies on fall treatments.
  • Analysis of patient data differentiating between accidental and unexplained falls.
  • Tilt testing and carotid sinus massage in older patients with unexplained falls.

Main Results:

  • Many older patients with unexplained falls exhibit reflex syncope with retrograde amnesia.
  • Tilt testing and carotid sinus massage can identify syncope as a cause of unexplained falls.
  • Existing research on fall treatments primarily involves mixed populations, limiting specific efficacy data.

Conclusions:

  • Reflex syncope with retrograde amnesia is a significant, underdiagnosed cause of unexplained falls in the elderly.
  • Further research is needed to develop and validate effective, targeted treatments for syncope-related falls.
  • Distinguishing syncopal falls from other fall types is crucial for appropriate management.