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Related Concept Videos

Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...

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Related Experiment Video

Updated: May 10, 2026

Using Extraordinary Optical Transmission to Quantify Cardiac Biomarkers in Human Serum
09:23

Using Extraordinary Optical Transmission to Quantify Cardiac Biomarkers in Human Serum

Published on: December 13, 2017

Cardiac Troponin T.

Matthias Mueller1, Mehrshad Vafaie, Moritz Biener

  • 1Department of Internal Medicine III, Cardiology, Angiology & Pneumology, University of Heidelberg.

Circulation Journal : Official Journal of the Japanese Circulation Society
|June 20, 2013
PubMed
Summary
This summary is machine-generated.

High-sensitivity cardiac troponin assays improve myocardial infarction (MI) detection. Serial sampling and delta changes help diagnose MI in non-acute coronary syndrome conditions, improving risk stratification.

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Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training
07:40

Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training

Published on: October 10, 2019

Related Experiment Videos

Last Updated: May 10, 2026

Using Extraordinary Optical Transmission to Quantify Cardiac Biomarkers in Human Serum
09:23

Using Extraordinary Optical Transmission to Quantify Cardiac Biomarkers in Human Serum

Published on: December 13, 2017

Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training
07:40

Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training

Published on: October 10, 2019

Area of Science:

  • Cardiology
  • Biomarker Discovery

Background:

  • Cardiac troponins (cTns) T and I are key biomarkers for myocardial infarction (MI).
  • High-sensitivity (hs) assays enhance early MI detection but increase detection of myocardial injury in non-acute coronary syndrome (ACS) conditions.
  • Distinguishing MI from other myocardial injuries poses diagnostic challenges.

Purpose of the Study:

  • To evaluate strategies for improving MI diagnosis using hs-cTn assays.
  • To assess the utility of serial sampling and delta changes in hs-cTn levels.
  • To explore the prognostic value of minor cTn elevations in both ACS and non-ACS conditions.

Main Methods:

  • Review of current consensus and proposed approaches for hs-cTn assay interpretation.
  • Analysis of serial sampling and delta-change strategies (e.g., 20% increase, 50% relative increase).
  • Evaluation of prognostic implications of hs-cTn levels in various clinical settings.

Main Results:

  • Serial sampling and delta-changes improve MI diagnostic accuracy with hs-cTn assays.
  • Specific thresholds (e.g., 20% increase, 50% relative increase) aid in rapid rule-in strategies.
  • Elevated cTn levels, even minor, provide significant prognostic information for adverse outcomes in ACS and non-ACS conditions.

Conclusions:

  • Hs-cTn assays, when interpreted with serial sampling and delta-changes, enhance MI diagnosis and risk stratification.
  • Minor cTn elevations are crucial for prognostication in diverse clinical scenarios.
  • Further development of sensitive assays may refine risk stratification for myocardial injury.