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Blood Studies for Cardiovascular System I: Cardiac Biomarkers

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.
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Exercise Stress Test

Exercise Stress Test

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Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...

Acute Coronary Syndrome I: Introduction

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...

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations

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The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...

Acute Coronary Syndrome III: Diagnostic Studies

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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...

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Related Experiment Video

Updated: May 10, 2026

Intracoronary Acetylcholine Provocation Testing for Assessment of Coronary Vasomotor Disorders

Intracoronary Acetylcholine Provocation Testing for Assessment of Coronary Vasomotor Disorders

Published on: August 18, 2016

Provocative test in recent myocardial infarction.

J M Lablanche, M E Bertrand

European Heart Journal

|December 1, 1986

Summary

Coronary artery spasm, a common angina cause, is diagnosed using provocative tests. The ergometrine test is highlighted as the most sensitive, reproducible, and easiest diagnostic method.

Area of Science:

Cardiology
Diagnostic Medicine

Background:

Coronary artery spasm is an increasingly recognized cause of angina.
Spontaneous coronary artery spasm is rare, necessitating diagnostic testing.

Purpose of the Study:

To compare various provocative tests for diagnosing coronary artery spasm.
To advocate for the ergometrine test as the preferred diagnostic method.

Main Methods:

Comparative analysis of different provocative tests for coronary artery spasm.
Focus on the ergometrine test's characteristics.

Main Results:

The ergometrine test demonstrates superior sensitivity compared to other methods.
The ergometrine test offers high reproducibility and ease of performance.

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Last Updated: May 10, 2026

Intracoronary Acetylcholine Provocation Testing for Assessment of Coronary Vasomotor Disorders

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Testing Acetylcholine Followed by Adenosine for Invasive Diagnosis of Coronary Vasomotor Disorders

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Ergometrine is identified as the most effective provocative agent.

Conclusions:

The ergometrine test is the most sensitive, reproducible, and easiest method for diagnosing coronary artery spasm.
Clinical practice should prioritize the ergometrine test for evaluating patients with suspected coronary artery spasm.