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Related Concept Videos

Increased pulse rate01:17

Increased pulse rate

621
Tachycardia is a condition marked by an abnormally fast or irregular heart rate, surpassing the typical resting rate. In adults, tachycardia is characterized by a pulse rate ranging from 100 to 180 beats per minute. The increased heart rate can result in inadequate blood flow to various body parts, ultimately diminishing the oxygen supply to organs and tissues.
Many factors can elevate the risk of developing tachycardia. These include advanced age, a family history of arrhythmias, and an...
621
Pulse rhythm01:30

Pulse rhythm

717
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...
717
Disturbances in Heart Rhythm01:28

Disturbances in Heart Rhythm

705
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...
705
Heart Failure Drugs: Inotropic Agents01:26

Heart Failure Drugs: Inotropic Agents

401
Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
401
Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

849
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.
849
Pathophysiology of Cardiac Performance01:29

Pathophysiology of Cardiac Performance

479
Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
479

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Related Experiment Video

Updated: May 9, 2025

Utilizing the Modified T-Maze to Assess Functional Memory Outcomes After Cardiac Arrest
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Utilizing the Modified T-Maze to Assess Functional Memory Outcomes After Cardiac Arrest

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On-Field Management: Cardiac Event.

Carl C Edge1, Jeff M Collins2, Michael H Avey2

  • 1Virginia Commonwealth University Health System, Department of Orthopedic Surgery, Division of Sport Medicine, Richmond, Virginia, USA.

Video Journal of Sports Medicine
|May 1, 2025
PubMed
Summary
This summary is machine-generated.

Sudden cardiac arrest (SCA) in athletes is a critical concern. Implementing emergency action plans (EAPs) and ensuring automated external defibrillator (AED) availability significantly improves survival rates for athletes experiencing SCA.

Keywords:
cardiopulmonary resuscitationemergency action plansideline physiciansudden cardiac arrestsudden cardiac death

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Area of Science:

  • Sports Medicine
  • Cardiology
  • Emergency Medicine

Background:

  • Sudden cardiac arrest (SCA) is the primary cause of sport-related fatalities in athletes.
  • SCA is defined as unexpected cardiac death within one hour of symptom onset.
  • Athletes, despite their healthy status, are susceptible to SCA during competition.

Purpose of the Study:

  • To outline preparedness measures for medical personnel managing SCA in athletes.
  • To review factors influencing survival rates in athletes experiencing SCA.
  • To detail the components of an effective emergency action plan (EAP) for SCA events.

Main Methods:

  • Review of causes of SCA in athletes.
  • Discussion of screening and diagnostic workup protocols.
  • Implementation strategies for a 12-item EAP for SCA management.
  • Guidance on post-resuscitation care transition.

Main Results:

  • Availability of automated external defibrillators (AEDs) is crucial for SCA survival.
  • Prepared sideline medical teams with EAPs enhance athlete survival chances.
  • EAPs standardize and streamline care for athletes experiencing SCA.

Conclusions:

  • Preparedness is key to improving survival outcomes for athletes experiencing SCA.
  • Medical and training staff must be proficient in EAPs and rehearse them annually.
  • The integration of AEDs and EAPs substantially increases the likelihood of athlete survival after SCA.