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[Atrial ejection force. Findings in healthy subjects]

A V Mattioli1, E Tarabini Castellani, D Vivoli

  • 1Dipartimento di Medicina Interna, Università degli Studi, Modena.

Cardiologia (Rome, Italy)
|May 1, 1995
PubMed
Summary

Atrial ejection force, measured by Doppler echocardiography, significantly declines with age. This finding highlights the need for age-corrected norms when evaluating atrial function.

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Area of Science:

  • Cardiology
  • Physiology
  • Medical Imaging

Background:

  • The assessment of atrial function is crucial for understanding diastolic performance.
  • Atrial ejection force (AEF) is a key indicator of the atria's contribution to ventricular filling.
  • Doppler echocardiography provides a non-invasive method to evaluate hemodynamic parameters.

Purpose of the Study:

  • To investigate the relationship between atrial ejection force and various biological and clinical parameters.
  • To determine the influence of aging on atrial ejection force.
  • To establish the utility of AEF in assessing atrial contribution to diastolic function.

Main Methods:

  • Atrial ejection force was measured using Doppler echocardiography, specifically analyzing the A-wave of the transmitral inflow pattern.
  • Seventy-two healthy subjects (36 males, 36 females, aged 20-80 years) were studied, with 12 participants per decade.
  • Bivariate correlation analysis was employed to assess relationships between AEF and parameters including age, anthropometrics, blood pressure, heart rate, and left atrial dimensions.

Main Results:

  • A strong, significant positive correlation was observed between atrial ejection force and age (r = 0.9, p < 0.001).
  • Atrial ejection force also showed a significant correlation with left atrial dimensions (p < 0.01).
  • No significant relationships were found between AEF and other clinical parameters such as heart rate or blood pressure.

Conclusions:

  • Atrial ejection force is a valuable parameter for evaluating the atrial contribution to diastolic performance.
  • A significant age-related decline in atrial ejection force was demonstrated.
  • The development of an age-corrected normogram for atrial ejection force is essential for accurate clinical assessment.

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