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Related Concept Videos

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

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...
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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...
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Acute Coronary Syndrome III: Diagnostic Studies01:30

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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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Electrocardiogram01:29

Electrocardiogram

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An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
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Exercise Stress Test01:26

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Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
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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...
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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
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ST-segment elevation: Differential diagnosis, caveats.

Elias B Hanna1, David Luke Glancy2

  • 1Assistant Professor of Medicine, Department of Medicine, Cardiovascular Section, Louisiana State University Health Sciences Center, New Orleans, LA, USA.

Cleveland Clinic Journal of Medicine
|June 19, 2015
PubMed
Summary
This summary is machine-generated.

Differentiating ST-segment elevation on ECGs is crucial for diagnosing conditions like myocardial infarction (STEMI), pericarditis, and Brugada syndrome. Understanding specific ECG patterns aids in accurate diagnosis.

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Area of Science:

  • Cardiology
  • Electrocardiography
  • Internal Medicine

Background:

  • ST-segment elevation on an electrocardiogram (ECG) can indicate several critical conditions.
  • Accurate differentiation is vital for timely and appropriate patient management.

Purpose of the Study:

  • To review the electrocardiographic configurations associated with various causes of ST-segment elevation.
  • To aid clinicians in the differential diagnosis of ST-segment elevation.

Main Methods:

  • Review of ST-T wave and QRS complex abnormalities.
  • Correlation of ECG findings with specific clinical diagnoses.

Main Results:

  • Identified key ECG patterns for ST-segment elevation myocardial infarction (STEMI), early repolarization, pericarditis, and QRS abnormalities (LBBB, LVH, preexcitation).
  • Highlighted ECG features differentiating these from other causes like hyperkalemia, pulmonary embolism, and Brugada syndrome.

Conclusions:

  • Specific electrocardiographic criteria and clinical context are essential for diagnosing the cause of ST-segment elevation.
  • This review provides a guide to recognizing characteristic ECG findings for major differential diagnoses.