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Diastolic ventricular function in type 1 diabetic patients: a study using Doppler echocardiography.

G Grossmann1, A Schmidt, H Hauner

  • 1Abteilung für Kardiologie, Universität Ulm, Germany.

Diabetic Medicine : a Journal of the British Diabetic Association
|April 1, 1991
PubMed
Summary

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Type 1 diabetes patients show impaired left ventricular diastolic function, indicated by a reduced early to late transmitral flow velocity ratio. This difference diminishes after matching for heart rate.

Area of Science:

  • Cardiology
  • Diabetology
  • Echocardiography

Background:

  • Type 1 diabetes can affect cardiac function.
  • Left ventricular diastolic function is crucial for heart health.
  • Diabetic patients without other cardiovascular conditions were studied.

Purpose of the Study:

  • To assess left ventricular diastolic function in Type 1 diabetic patients.
  • To investigate transmitral flow velocity patterns in diabetes.
  • To determine if diabetes impacts diastolic function independently of other factors.

Main Methods:

  • Echocardiography was used to study transmitral flow velocity patterns.
  • 28 Type 1 diabetic patients and 39 healthy controls were analyzed.
  • Doppler-derived variables, including the early to late peak flow velocity ratio (ve/va), were measured.

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Main Results:

  • The ve/va ratio was significantly decreased in diabetic patients (1.3 +/- 0.1 vs 1.6 +/- 0.1, p < 0.05).
  • No correlation was found between ve/va and diabetes duration.
  • A significant inverse correlation was observed between ve/va and heart rate in both groups.
  • After heart rate matching, the decrease in ve/va in diabetic patients was no longer significant.

Conclusions:

  • Type 1 diabetes may be associated with subtle left ventricular diastolic dysfunction.
  • Heart rate significantly influences transmitral flow velocity patterns.
  • The observed decrease in ve/va in diabetic patients might be partly explained by differences in heart rate, suggesting diastolic function is preserved after accounting for this factor.