The Assessment of Diastolic Function (no LV structural pathology) is a clinical tool designed for the evaluation of diastolic function in patients without left ventricular (LV) structural pathology. This tool aids in the identification of abnormal diastolic function, which is a key factor in the diagnosis and management of various cardiovascular conditions.
The primary components of this assessment tool are four echocardiographic parameters: septal e' velocity, lateral e' velocity, average E/e' ratio, peak tricuspid regurgitation (TR) velocity, and left atrial volume index. Each parameter is assigned a score of 1 if it meets certain criteria: septal e' velocity less than 7 cm/s or lateral e' velocity less than 10 cm/s; average E/e' ratio greater than 14; peak TR velocity greater than 2.8 m/s; and left atrial volume index greater than 34 mL/m^2.
The total score, which ranges from 0 to 4, is used to determine the patient's diastolic function. A score of 3 or more indicates abnormal diastolic function, a score of 2 is considered indeterminate, and a score less than 2 suggests no diastolic dysfunction. This scoring system provides a structured approach to the assessment of diastolic function, facilitating accurate diagnosis and appropriate management of patients without LV structural pathology.
Reference
Sherif F Nagueh, Otto A Smiseth, Christopher P Appleton et al. Recommendations for the Evaluation of Left Ventricular Diastolic Function by Echocardiography: An Update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging. J Am Soc Echocardiogr. 2016 Apr;29(4):277-314.
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