Left atrial velocity vector imaging for the detection and quantification of left ventricular diastolic function in type 2 diabetes

• UNLABELLED: Left ventricular (LV) diastolic dysfunction (DD) is diagnosed by Doppler echocardiography (DE) and Tissue Doppler imaging (TDI). Velocity vector imaging (VVI) evaluates myocardial deformation (strain). We studied left atrial (LA) deformation and volumes by VVI in relation to established Doppler-derived indices of LV diastolic function in diabetic patients. MATERIAL: Using DE and TDI , 87 patients (males 49%; age 60+/-7 years) with type 2 diabetes mellitus were classified as having no (n=60), mild (n=13) or moderate (n=14) DD. RESULTS: LA volume was larger in moderate (72.3+/-22.4 ml) than in mild DD (58.8+/-16.1 ml; p=0.01) and no DD (57.9+/-16.0 ml; p=0.01). LA roof strain distinguished no DD from mild and moderate DD (p=0.0073). Systolic LA strain correlated to total emptying fraction (r=0.70, p<0.0001), and inversely to LA volume (r=-0.35, p=0.0009). A cross-validated analysis of no versus mild or moderate DD expressed by LA strain revealed a positive predictive value of 48% and negative of 84%. CONCLUSION: LA strain by VVI is impaired in patients with type 2 diabetes mellitus and mild or moderate LV DD. LA strain seems of value in distinguishing normal from abnormal diastolic function. VVI offers new information on regional LA function and LA volumes but has too limited discriminative power to detect early LV DD.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine (hsv//eng)

Nyckelord

Atrial Function

Left/*physiology

Diabetes Mellitus

Type 2/complications/*physiopathology

Diastole

Echocardiography

Doppler/*methods

Female

Follow-Up Studies

Heart Atria/*diagnostic imaging/physiopathology

Humans

Male

Middle Aged

Myocardial Contraction/*physiology

Severity of Illness Index

Ventricular Dysfunction

Left/diagnostic imaging/etiology/*physiopathology

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)