Diastolic Dysfunction Diagnosis and Management

Defining Characteristics

The European Society of Cardiology recommends that grade 1 diastolic dysfunction is specifically defined by impaired relaxation with normal left atrial pressure (LAP) 4, 2
An E/A ratio ≤0.8 with peak E velocity ≤50 cm/sec indicates normal or low mean LAP, according to the European Heart Journal 1, 3
An average E/e' ratio <14 confirms normal filling pressures, as stated in the European Heart Journal 1, 3
An LA volume index <34 mL/m² supports normal chronic filling pressures, as reported in the European Heart Journal 1, 3
A TR jet velocity <2.8 m/sec indicates normal pulmonary artery systolic pressure, according to the European Heart Journal 1, 3

The European Heart Journal states that grade 1 diastolic dysfunction is characterized by impaired relaxation with normal or low LAP 4, 2
The European Heart Journal reports that when fewer than 50% of the available parameters (E/e', LA volume index, TR velocity) meet cutoff values for elevation, LAP is normal and grade 1 diastolic dysfunction is present 1, 3

If peak E velocity ≤50 cm/sec, LAP is normal, and grade 1 diastolic dysfunction is diagnosed, according to the European Heart Journal 1, 3
If peak E velocity >50 cm/sec, additional parameters (E/e', LA volume index, TR velocity) should be assessed to determine the grade of diastolic dysfunction, as stated in the European Heart Journal 1, 3

The European Society of Cardiology recommends addressing primary etiologies (hypertension, coronary artery disease, diabetes, obesity) in the management of grade 1 diastolic dysfunction, although this specific recommendation is not found in the provided text, a similar recommendation can be found for the management of heart failure in general 5