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Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

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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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Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
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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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Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction
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ST elevation without myocardial infarction.

Zouheir Ibrahim Bitar1, Mohammad Swede, Khaled Almerri

  • 1Department of Internal Medicine, KOC Hospital, Fahahil, Kuwait.

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|April 9, 2014
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Summary
This summary is machine-generated.

Acute myocarditis can mimic heart attacks, presenting with similar symptoms and diagnostic findings. Cardiac magnetic resonance imaging offers a non-invasive method for accurately diagnosing myocarditis.

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Area of Science:

  • Cardiology
  • Medical Imaging

Background:

  • Acute myocarditis often presents with symptoms indistinguishable from acute myocardial infarction, including chest pain, electrocardiogram (ECG) abnormalities, and elevated cardiac biomarkers.
  • Diagnostic challenges arise as ECG and echocardiography findings in myocarditis can mirror those of acute coronary syndromes.

Observation:

  • A case study highlights a patient presenting with ST-segment elevation on ECG, initially suggestive of myocardial infarction.
  • Coronary angiography in this case revealed no significant blockages, prompting further investigation.

Findings:

  • Cardiac magnetic resonance (CMR) imaging, particularly with myocardial delayed enhancement (MDE) sequences, proved effective in diagnosing acute myocarditis.
  • CMR identified myocardial inflammation and edema, differentiating it from ischemic heart disease.

Implications:

  • This case underscores the importance of considering myocarditis in the differential diagnosis of acute chest pain presentations.
  • Cardiac magnetic resonance imaging serves as a valuable, non-invasive tool for accurate diagnosis and management of acute myocarditis, avoiding unnecessary invasive procedures.