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Related Concept Videos

Assessment of the Cardiovascular System IV: Auscultation01:25

Assessment of the Cardiovascular System IV: Auscultation

Cardiac auscultation is a clinical skill used to assess heart function and detect abnormalities. It involves listening to heart sounds at specific anatomical locations through a stethoscope.
Normal Heart Sounds
S1 (First Heart Sound)-
S1 is made by the closure of the mitral and tricuspid valves (atrioventricular valves), marking the beginning of systole.
S2 (Second Heart Sound)-
S2 is made by the closure of the aortic and pulmonic valves (semilunar valves), marking the end of the systole.
Assessment of the Cardiovascular System III: Palpation01:27

Assessment of the Cardiovascular System III: Palpation

Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...
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...
Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
Assessment of apical pulse01:17

Assessment of apical pulse

Assessing the Apical Pulse
Assessing the apical pulse is a critical nursing procedure, particularly indicated for:

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Related Experiment Video

Updated: May 19, 2026

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
08:13

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography

Published on: February 16, 2016

[Myocardial viability assessment].

Hélder Fernandes1, Alexandra Sousa, José Campos

  • 1Serviços de Medicina Nuclear, Cardiologia e de Radiologia, Hospital S João, Porto, Portugal.

Acta Medica Portuguesa
|August 7, 2012
PubMed
Summary
This summary is machine-generated.

Assessing myocardial viability is crucial for managing ischemic cardiomyopathy. Nuclear medicine and other imaging techniques help identify patients who benefit from revascularization versus medical therapy.

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A Microscopic 2,3,5-Triphenyltetrazolium Chloride Assay for Accurate and Reliable Analysis of Myocardial Injury
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In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
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Functional Assessment of the Donor Heart During Ex Situ Perfusion: Insights from Pressure-Volume Loops and Surface Echocardiography
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Functional Assessment of the Donor Heart During Ex Situ Perfusion: Insights from Pressure-Volume Loops and Surface Echocardiography

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A Microscopic 2,3,5-Triphenyltetrazolium Chloride Assay for Accurate and Reliable Analysis of Myocardial Injury
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A Microscopic 2,3,5-Triphenyltetrazolium Chloride Assay for Accurate and Reliable Analysis of Myocardial Injury

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Area of Science:

  • Cardiology
  • Nuclear Medicine
  • Medical Imaging

Background:

  • Chronic coronary artery disease with severe left ventricular dysfunction has a poor prognosis.
  • Myocardial viability assessment is key for diagnosis, prognosis, and management of ischemic cardiomyopathy.
  • Identifying severely ischemic myocardium predicts benefit from coronary revascularization.

Purpose of the Study:

  • To review the role of Nuclear Medicine in assessing myocardial viability.
  • To evaluate Nuclear Medicine's role in risk stratification for left ventricular dysfunction.
  • To compare Nuclear Medicine with other imaging modalities for viability assessment.

Main Methods:

  • Review of multiple imaging techniques including PET FDG-F18, myocardial perfusion scintigraphy, dobutamine stress echocardiography, and magnetic resonance.
  • Evaluation of perfusion, cell membrane integrity, glucose metabolism, fibrosis, and contractile reserve.
  • Comparison of sensitivity and specificity of different modalities for viability detection.

Main Results:

  • Nuclear imaging techniques generally show higher sensitivity for viability detection.
  • Contractile reserve techniques offer higher specificity but lower sensitivity.
  • Magnetic resonance accurately assesses the transmural extent of myocardial scar tissue.

Conclusions:

  • Myocardial viability assessment guides treatment decisions in ischemic cardiomyopathy.
  • Nuclear Medicine plays a significant role in viability assessment and risk stratification.
  • Different imaging modalities offer complementary information for patient management.