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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...
Heart Failure Drugs: Inotropic Agents01:26

Heart Failure Drugs: Inotropic Agents

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...
Acute Coronary Syndrome IV: Interprofessional Care01:28

Acute Coronary Syndrome IV: Interprofessional Care

IntroductionThe management of Acute Coronary Syndrome (ACS) aims to minimize myocardial damage, preserve myocardial function, and prevent complications.Initial ManagementInpatient management involves continuous cardiac monitoring, preferably in an ICU, focusing on blood pressure, serum sodium, potassium, and creatinine levels, and urine output. Ongoing pharmacologic management is crucial for stabilizing the patient.Supplemental Oxygen: Administer supplemental oxygen if oxygen saturation is...
Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

Acute Kidney Injury IV: Diagnostic Studies and Prevention

Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...

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Related Experiment Video

Updated: May 21, 2026

Manual Muscle Testing: A Method of Measuring Extremity Muscle Strength Applied to Critically Ill Patients
09:44

Manual Muscle Testing: A Method of Measuring Extremity Muscle Strength Applied to Critically Ill Patients

Published on: April 12, 2011

Troponin in critically ill patients.

M A Hamilton1, A Toner, M Cecconi

  • 1General Intensive Care St. George's Hospital NHS Trust, SW17 0QT London, UK. markhamilton@nhs.net

Minerva Anestesiologica
|June 22, 2012
PubMed
Summary
This summary is machine-generated.

Cardiac troponin assays are vital for diagnosing myocardial infarction. In critically ill patients, elevated troponin often indicates non-coronary issues like sepsis, predicting poor outcomes and guiding management strategies.

Related Experiment Videos

Last Updated: May 21, 2026

Manual Muscle Testing: A Method of Measuring Extremity Muscle Strength Applied to Critically Ill Patients
09:44

Manual Muscle Testing: A Method of Measuring Extremity Muscle Strength Applied to Critically Ill Patients

Published on: April 12, 2011

Area of Science:

  • Cardiology
  • Critical Care Medicine
  • Biomarker Analysis

Background:

  • Cardiac troponin assays are crucial for myocardial infarction diagnosis.
  • Elevated troponin is detected in up to 60% of critically ill patients, with increasing incidence due to sensitive assays.
  • Troponin rises in critical care often stem from non-coronary causes like sepsis and respiratory failure, not just myocardial infarction.

Purpose of the Study:

  • To review the utility of cardiac troponin as a biomarker in critical care settings.
  • To outline a pragmatic management strategy for elevated troponin in critically ill patients.
  • To differentiate troponin rises due to myocardial infarction versus non-coronary causes.

Main Methods:

  • Review of existing literature on cardiac troponin in critical care.
  • Analysis of the prognostic value of troponin elevations.
  • Discussion of diagnostic and therapeutic challenges in managing troponin rises.

Main Results:

  • Non-coronary troponin release is a significant, independent predictor of adverse patient outcomes.
  • Elevated troponin in critical care is frequently associated with sepsis and respiratory failure.
  • Treatment for non-coronary troponin rises focuses on managing the underlying condition and oxygen supply-demand balance.

Conclusions:

  • Cardiac troponin is a valuable prognostic biomarker in critical care, even when not indicative of myocardial infarction.
  • Management strategies must address the underlying cause of troponin elevation.
  • Further research may refine the role of troponin in risk stratification and treatment decisions for critically ill patients.