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

The Cardiac Cycle01:13

The Cardiac Cycle

100.7K
The heart beats rhythmically in a sequence called the cardiac cycle—a rapid coordination of contraction (systole) and relaxation (diastole).
The Process
Electrical signals—sent from the sinoatrial (SA) node in the right atrial wall to the atrioventricular (AV) node between the right atrium and right ventricle—cause both atria to simultaneously contract. When the signal reaches the AV node, it pauses for approximately a tenth of a second, allowing the atria to contract and...
100.7K
Physiology of the Heart: The Cardiac Cycle01:18

Physiology of the Heart: The Cardiac Cycle

13.3K
The cardiac cycle describes the events from one heartbeat to the next. It includes three main phases: diastole, atrial systole, and ventricular systole, all driven by changes in chamber pressures and the function of heart valves.
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...
13.3K
Overview of the Heart01:07

Overview of the Heart

15.3K
The heart, a muscular organ located in the chest, functions as the body's pump, circulating blood through the vascular system. It has four chambers: two atria on top and two ventricles below. The right atrium receives deoxygenated blood from the body and passes it to the right ventricle, which pumps it to the lungs for oxygenation. The left atrium receives oxygenated blood from the lungs and transfers it to the left ventricle, which pumps it to the rest of the body.
The heart's structure...
15.3K
Development of the Heart01:27

Development of the Heart

3.5K
The development of the human heart, a crucial organ, commences from the mesoderm on the 18th or 19th day after fertilization. This process initiates in the cardiogenic area, a group of mesodermal cells at the embryo's head end, which evolves into elongated strands known as cardiogenic cords. These cords undergo a transformation to form hollow-centered endocardial tubes.
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart...
3.5K
Cardiac Cycle01:29

Cardiac Cycle

14.3K
The cardiac cycle refers to the sequence of events that occur in the heart from the beginning of one heartbeat to the next. It's characterized by alternating periods of contraction (systole) and relaxation (diastole) of the heart muscles.
During the cardiac cycle, blood flow through the heart is regulated entirely by changing pressure gradients. This sequence of events begins with the heart in a state of total relaxation, known as mid-to-late diastole, during which blood passively flows from...
14.3K
Conduction System of the Heart01:19

Conduction System of the Heart

14.5K
Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
14.5K

You might also read

Related Articles

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

Sort by
Same author

"Aare You Safe?" River-related presentations and clinical outcomes at a Swiss tertiary emergency department: a retrospective cross-sectional study.

Swiss medical weekly·2026
Same author

Pulmonary Artery Intimal Sarcoma Mimics Recurrent Pulmonary Artery Embolism.

European journal of case reports in internal medicine·2025
Same author

Burnout, Depression, and Stress in Emergency Department Nurses and Physicians and the Impact on Private and Work Life: A Systematic Review.

Journal of the American College of Emergency Physicians open·2025
Same author

Pancreatic ultrasound: An update of measurements, reference values, and variations of the pancreas.

Ultrasound international open·2024
Same author

Comments and illustrations of the European Federation of Societies for Ultrasound in Medicine contrast-enhanced ultrasound guidelines. Rare pancreatic tumors, imaging features on transabdominal ultrasound and EUS with contrast enhancement: Rare epithelial pancreatic tumors: solid pseudopapillary neoplasm, acinar cell carcinoma, mixed neuroendocrine-non-neuroendocrine neoplasms, some rare subtypes of pancreatic adenocarcinoma and pancreatoblastoma.

Endoscopic ultrasound·2024
Same author

Comments and illustrations of the European Federation of Societies for Ultrasound in Medicine contrast-enhanced ultrasonography guidelines: multiparametric imaging and EUS-guided sampling in rare pancreatic tumors. Mesenchymal pancreatic tumors of intermediate biological behaviour.

Endoscopic ultrasound·2024
Same journal

Post-extubation pneumothorax following bougie-assisted endotracheal tube exchange.

BMJ case reports·2026
Same journal

Cardiac tamponade secondary to hypothyroidism.

BMJ case reports·2026
Same journal

Unmasking a rare contrast reaction: acute non-cardiogenic pulmonary oedema after iohexol injection.

BMJ case reports·2026
Same journal

Water gonioscopy-assisted transluminaltrabeculotomy.

BMJ case reports·2026
Same journal

<i>Clostridioides difficile</i> osteomyelitis presenting as a Brodie's abscess of the tibia.

BMJ case reports·2026
Same journal

Steroid refractory rapidly progressing organising pneumonia.

BMJ case reports·2026
See all related articles

Related Experiment Video

Updated: Mar 24, 2026

Pre-clinical Model of Cardiac Donation after Circulatory Death
06:26

Pre-clinical Model of Cardiac Donation after Circulatory Death

Published on: August 2, 2019

8.5K

Restart the heart.

Karsten Klingberg1, David Srivastava1

  • 1Emergency Department, University Hospital Bern, Switzerland.

BMJ Case Reports
|March 13, 2016
PubMed
Summary
This summary is machine-generated.

Immediate CPR and defibrillation are crucial for survival after out-of-hospital cardiac arrest (OHCA). This case highlights the importance of rapid response in young athletes experiencing sudden cardiac arrest from blunt cardiac injury.

More Related Videos

An Isolated Working Heart System for Large Animal Models
09:45

An Isolated Working Heart System for Large Animal Models

Published on: June 11, 2014

31.6K
Delivery of Cardioactive Therapeutics in a Porcine Myocardial Infarction Model
07:20

Delivery of Cardioactive Therapeutics in a Porcine Myocardial Infarction Model

Published on: February 10, 2023

1.8K

Related Experiment Videos

Last Updated: Mar 24, 2026

Pre-clinical Model of Cardiac Donation after Circulatory Death
06:26

Pre-clinical Model of Cardiac Donation after Circulatory Death

Published on: August 2, 2019

8.5K
An Isolated Working Heart System for Large Animal Models
09:45

An Isolated Working Heart System for Large Animal Models

Published on: June 11, 2014

31.6K
Delivery of Cardioactive Therapeutics in a Porcine Myocardial Infarction Model
07:20

Delivery of Cardioactive Therapeutics in a Porcine Myocardial Infarction Model

Published on: February 10, 2023

1.8K

Area of Science:

  • Sports Medicine
  • Cardiology
  • Emergency Medicine

Background:

  • Out-of-hospital cardiac arrest (OHCA) in young athletes is rare but carries high mortality.
  • Blunt cardiac injury (BCI) can precipitate ventricular fibrillation, even without underlying heart disease.
  • Recent American Heart Association/European Resuscitation Council (AHA/ERC) guidelines emphasize early interventions.

Observation:

  • A healthy young male athlete experienced a witnessed cardiac arrest during a football match due to chest collision.
  • Immediate basic life support was initiated by teammates.
  • An automated external defibrillator (AED) was promptly utilized.

Findings:

  • The case illustrates the critical role of early bystander cardiopulmonary resuscitation (CPR) and rapid defibrillation in OHCA.
  • Ventricular fibrillation secondary to BCI in athletes underscores the need for prompt recognition and management.
  • Successful resuscitation demonstrates the effectiveness of the chain of survival principles.

Implications:

  • Highlights the importance of implementing and adhering to updated AHA/ERC guidelines for OHCA management.
  • Emphasizes the need for accessible AEDs and trained bystanders in sports settings.
  • Reinforces the critical link between prompt medical intervention and improved survival rates in sudden cardiac arrest scenarios.