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[Normal values for dobutamine stress echocardiography]

U Nixdorff1, S Wagner, R Erbel

  • 1II. Medizinische Klinik und Poliklinik, Universität Mainz.

Deutsche Medizinische Wochenschrift (1946)
|December 22, 1995
PubMed
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Dobutamine stress echocardiography effectively assesses heart function, showing significant hemodynamic changes and improved left ventricular contractility. This method is reliable for diagnosing coronary heart disease without causing harmful electrolyte imbalances.

Area of Science:

  • Cardiology
  • Diagnostic Imaging
  • Physiology

Background:

  • Dobutamine stress echocardiography (DSE) is a sensitive diagnostic tool for coronary heart disease.
  • Establishing normative physiological values is crucial for accurate interpretation of DSE findings.

Purpose of the Study:

  • To measure physiological hemodynamics and left ventricular myocardial function during DSE.
  • To evaluate the effectiveness and safety of a standard DSE protocol.

Main Methods:

  • 14 healthy subjects underwent DSE using a stepwise dobutamine infusion protocol (5-40 µg/kg/min) with atropine.
  • Hemodynamic parameters (heart rate, blood pressure, double product) and left ventricular volumes were measured.

Main Results:

Related Experiment Videos

  • DSE significantly increased heart rate, blood pressure, and double product.
  • Left ventricular end-diastolic and end-systolic volumes decreased, indicating improved contractility.
  • No significant changes in serum electrolytes, including potassium, were observed.

    • Conclusions:

    • The standard DSE protocol is effective, inducing significant hemodynamic effects at low dosages.
    • High dobutamine levels can be achieved safely without inducing hypokalemia.
    • Volume indices and ejection fraction are key discriminatory variables, and quantitative wall motion analysis is reliable due to low scatter.