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Related Concept Videos

Assessment of blood pressure in brachial artery(one-step method)01:15

Assessment of blood pressure in brachial artery(one-step method)

This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:
Assessment of blood pressure in brachial artery(two-step method)01:23

Assessment of blood pressure in brachial artery(two-step method)

Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
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Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

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Measuring Ascending Aortic Stiffness In Vivo in Mice Using Ultrasound
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Published on: December 2, 2014

Interobserver variability in coronary angiography.

L M Zir, S W Miller, R E Dinsmore

    Circulation
    |April 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Coronary angiography shows significant interobserver variability in assessing coronary artery stenosis and left ventricular wall motion abnormalities. This variability highlights a key limitation in diagnostic accuracy for these cardiac conditions.

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    Last Updated: Jun 25, 2026

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    Published on: December 2, 2014

    Ultrasound Based Assessment of Coronary Artery Flow and Coronary Flow Reserve Using the Pressure Overload Model in Mice
    06:39

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    Published on: April 13, 2015

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    Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression

    Published on: January 15, 2022

    Area of Science:

    • Cardiology
    • Radiology
    • Medical Imaging

    Background:

    • Coronary angiography is a primary diagnostic tool for coronary artery disease.
    • Accurate assessment of coronary stenosis and left ventricular function is crucial for patient management.

    Purpose of the Study:

    • To evaluate the interobserver variability among experienced angiographers in interpreting coronary angiograms.
    • To quantify the extent of disagreement in assessing coronary artery stenosis and left ventricular wall motion abnormalities.

    Main Methods:

    • Four experienced angiographers (2 radiologists, 2 cardiologists) independently reviewed 20 coronary angiograms.
    • Observers assessed stenosis severity and left ventricular wall motion abnormalities using standardized criteria.

    Main Results:

    • Significant interobserver variability was observed in quantifying coronary artery stenosis.
    • A mean disagreement of 42% was found among observers when grading left ventricular wall motion abnormalities.
    • Agreement on stenosis significance was only 65% for the left anterior descending artery and lower for the main left coronary artery.

    Conclusions:

    • Interobserver variability in coronary angiography represents a significant limitation in diagnostic accuracy.
    • Discrepancies in interpretation can impact clinical decision-making and patient outcomes.
    • Further standardization or adjunctive imaging techniques may be needed to improve diagnostic reliability.