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Related Experiment Videos

[Enzyme status in myocardial infarction].

L F Engebretsen, J H Strømme, O Skjaeggestad

    Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke
    |April 30, 1989
    PubMed
    Summary

    Diagnosing acute myocardial infarction early with serum enzyme tests remains challenging. While myoglobin shows promise, reliable diagnosis requires multiple samples over time to track enzyme changes.

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    Reference intervals for eight enzymes in blood of adult females and males measured in accordance with the International Federation of Clinical Chemistry reference system at 37 degrees C: part of the Nordic Reference Interval Project.

    Scandinavian journal of clinical and laboratory investigation·2004
    Same author

    [Diagnoses and increased levels of troponin T among discharged patients].

    Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke·2002
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    [New cardiac markers--clinical benefits in early diagnosis of acute heart disease].

    Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke·2001
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    Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke·2000
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    Markers of myocardial injury in blood following PTCA: a comparison of CKMB, cardiospecific troponin T and troponin I.

    Scandinavian journal of clinical and laboratory investigation·1999
    Same author

    Serial measurements of cardiac markers to rule in or out acute myocardial damage less than 3 h after admission in acute chest pain patients without ECG-signs of acute myocardial infarction.

    Scandinavian journal of clinical and laboratory investigation·1998

    Area of Science:

    • Cardiology
    • Biochemistry

    Context:

    • Acute myocardial infarction (AMI) diagnosis is critical for patient outcomes.
    • Less than 50% of suspected AMI cases show actual myocardial necrosis.
    • Serum enzyme level changes are key diagnostic indicators for AMI.

    Purpose:

    • To evaluate different serum enzyme analysis strategies for rapid and reliable AMI diagnosis.
    • To assess resource consumption alongside diagnostic efficiency.
    • To determine optimal blood sampling frequency and enzyme selection.

    Summary:

    • Myoglobin was the most effective early marker, but with only 66% efficiency and low specificity.
    • A strategy of five blood samples (every 8 hours for 24 hours, then at 48 hours) yielded the best results.
    • Changes in Creatine Kinase (CK) and Lactate Dehydrogenase (LD) activities provided valuable diagnostic information, including infarct size and disease progression.

    Impact:

    • Reliable early diagnosis of AMI solely through serum analysis is currently not feasible.
    • The study highlights the limitations of current early diagnostic markers.
    • Optimized sampling protocols are essential for improving diagnostic accuracy and resource management in suspected AMI cases.

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