Combined systolic and diastolic dysfunction in the presence of preserved left ventricular ejection fraction.
BACKGROUND
Heart failure with preserved left ventricular ejection fraction (LVEF) suggests isolated diastolic dysfunction.


OBJECTIVE
The purpose of this study was to determine if systolic and diastolic dysfunction occurred with preserved LVEF.


METHODS
Equilibrium resting radionuclide ventriculograms from 439 patients with an LVEF >/=0.50 were used to determine LV peak filling rate (PFR) and peak ejection rate (PER) in end-diastolic volumes per second and LV end-systolic volume (ml). Patients with low-normal (n=147; range, 0.50-0.58; mean+/-S.D., 0.53+/-0.02), intermediate-normal (161, 0.59-0.64, 0.61+/-0.02), and high-normal (131, 0.65-0.94, 0.72+/-0.06) LVEF were compared.


RESULTS
From low-normal to intermediate-normal to high-normal LVEF, LV end-systolic volume decreased (93+/-36, 71+/-33, 43+/-26, respectively, P<0.0001), PFR increased (2.31+/-0.74, 2.58+/-0.74, 3.15+/-0.94, P<0.0001), PER increased (-2.78+/-0.50, -3.13+/-0.47, -3.83+/-0.84, P<0.0001), the percentages of patients with abnormal PFR decreased (66, 56, 40, P<.0001), and the percentage with abnormal PER decreased (47, 14, 5, P<0.0001). Of 193 patients with preserved LVEF and abnormally low PFR, 65 (34%) had abnormally low PER.


CONCLUSIONS
The results indicate that a preserved LVEF was often associated with LV systolic dysfunction (enlarged LV end-systolic volume and low PER) and LV diastolic dysfunction (decreased PFR).
Clements
Ian P
IP
Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, United States. lovejoy.margery@mayo.edu
D000368:Aged; D003971:Diastole / Q000502:physiology; D005260:Female; D015637:Gated Blood-Pool Imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D013318:Stroke Volume; D013599:Systole / Q000502:physiology; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000503:physiopathology*