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Related Experiment Videos

Acute effects of ethanol on left ventricular diastolic function.

M Kupari1, P Koskinen, M Hynynen

  • 1Department of Cardiology, Helsinki University Central Hospital, Finland.

British Heart Journal
|August 1, 1990
PubMed
Summary

Ethanol consumption slightly increased the ratio of peak atrial to early diastolic mitral flow velocity in healthy men, potentially due to its diuretic effect rather than impaired diastolic function.

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Area of Science:

  • Cardiology
  • Pharmacology

Background:

  • Ethanol's effects on cardiac diastolic function are not fully understood.
  • Doppler echocardiography is a key tool for assessing cardiac hemodynamics.

Purpose of the Study:

  • To investigate the acute effects of moderate ethanol ingestion on left ventricular diastolic function.
  • To differentiate between direct effects of ethanol on diastolic function and indirect effects like fluid balance changes.

Main Methods:

  • Doppler echocardiography to measure transmitral flow velocities in nine healthy men.
  • Ethanol (1 g/kg) and fruit juice administered separately.
  • Measurements taken hourly for three hours post-ingestion.

Main Results:

  • Ethanol increased heart rate but did not alter peak transmitral velocities or filling rates.

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  • The ratio of peak atrial to peak early diastolic velocity increased significantly after ethanol.
  • This ratio change correlated with a negative fluid balance (diuretic effect) observed with ethanol.

    • Conclusions:

    • Moderate ethanol intake causes a minor increase in the atrial to early diastolic velocity ratio of mitral flow.
    • This alteration in diastolic function is likely primarily due to ethanol's diuretic effect, not significant impairment of ventricular relaxation.