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Related Concept Videos

Relative Risk01:12

Relative Risk

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Relative risk (RR) is a statistical measure commonly used in epidemiology to compare the likelihood of a particular event occurring between two groups. This metric is important for evaluating the relationship between exposure to a specific risk factor and the probability of a particular outcome. It plays a crucial role in medical research, public health studies, and risk assessment. Relative risk quantifies how much more (or less) likely an event is to occur in an exposed group compared to an...
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The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
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Autophagic Cell Death01:18

Autophagic Cell Death

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Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
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Overview of Cell Death01:30

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Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
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Cardiac Output II: Effect of Stroke Volume on Cardiac Output01:22

Cardiac Output II: Effect of Stroke Volume on Cardiac Output

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Cardiac output (CO), the amount of blood the heart pumps per minute, is a parameter in cardiovascular physiology determined by stroke volume and heart rate. Stroke volume, the amount of blood pushed from one of the ventricles per heartbeat, is influenced by preload, afterload, and contractility.
Preload
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Cardiac Output I:Effect of Heart Rate on Cardiac Output01:19

Cardiac Output I:Effect of Heart Rate on Cardiac Output

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Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
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Updated: Feb 4, 2026

Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus
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Sudden Cardiac Death Risk Stratification - An Update.

Reginald Liew1

  • 1Gleneagles Hospital Singapore, Duke-NUS Graduate Medical School, Singapore.

European Cardiology
|October 13, 2018
PubMed
Summary
This summary is machine-generated.

Identifying individuals at risk of sudden cardiac death (SCD) is crucial. Current risk assessment methods are insufficient, necessitating improved strategies for timely intervention and treatment, like implantable-cardioverter defibrillators (ICDs).

Keywords:
Sudden cardiac deathearly repolarisation syndromeimplantable cardioverter defibrillatorischaemic cardiomyopathynon-ischaemic dilated cardiomyopathyrisk stratificationsignal averaged ECGventricular fibrillation

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Area of Science:

  • Cardiology
  • Public Health
  • Medical Technology

Background:

  • Sudden cardiac death (SCD) is a significant global health concern.
  • Existing risk stratification methods for SCD are inadequate.
  • Effective identification of high-risk individuals is needed for timely, life-saving interventions.

Purpose of the Study:

  • To review current SCD risk stratification methods for high-risk populations.
  • To discuss novel approaches for future SCD risk assessment.
  • To explore challenges in stratifying SCD risk in the general population.

Main Methods:

  • Literature review of current and emerging SCD risk stratification techniques.
  • Focus on patients with reduced left ventricular function post-myocardial infarction and non-ischaemic dilated cardiomyopathy.
  • Discussion of general population risk assessment strategies.

Main Results:

  • Current risk stratification for sudden cardiac death is insufficient.
  • Implantable-cardioverter defibrillators (ICDs) offer life-saving treatment but carry risks and costs.
  • Novel methods are being explored to improve accuracy in identifying at-risk individuals.

Conclusions:

  • Improved risk stratification is essential for managing sudden cardiac death.
  • Future strategies may incorporate novel methods for better patient selection.
  • Addressing SCD risk in the general, often asymptomatic, population remains a key challenge.