Purpose: To investigate the effect of Quinapril (Q) or Losartan (L) or their combination on definite Diabetic Autonomic Neuropathy (DAN) and left ventricular systolic and diastolic function (LVF) over a period of 4 years. Patients-methods: Fifty-nine patients with definite DAN \[2 or more of the 4 Cardiovascular Reflex Tests (CRTs) were abnormal\] were studied for 4 years. Patients were randomly allocated in 3 groups receiving A, 20 mg Q, B, 100 mg L and C, 20 mg Q +100 mg L respectively. CRTs analyzed with Mean Circular Resultant (MCR), Valsalva index, 30:15 ratio and postural hypotension. LV function was investigated with radionuclide ventriculography (RNV) at rest. Ejection fraction was used to assess LV systolic function, while peak filling rate, first third filling fraction, and atrial contribution to ventricular filling were used to investigate LV diastolic function. CRTs and RNV were performed at baseline and after 4 years.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
59
Per os
Per os
Per os
Diabetes Center, 1st Propeudetic Department of Internal Medicine, Medical School, Aristotle University of Thessaloniki, "AHEPA'' Hospital
Thessaloniki, Greece
MCR
Mean Circular Resultant
Time frame: 4 years
AV
Atrial contribution to ventricular filling
Time frame: 4 years
E/I Index
Expiration/Inspiration Index
Time frame: 4 years
SD
Standard Deviation
Time frame: 4 years
Valsalva Index
Valsalva Maneuver
Time frame: 4 years
30:15 Index
Variation of R-R interval during postural change
Time frame: 4 years
Postural hypotension
Variation of systolic blood pressure during postural change (standing)
Time frame: 4 years
EF
Left ventricular ejection fraction
Time frame: 4 years
PER
Peak emptying rate
Time frame: 4 years
PFR
Peak filling rate Peak filling rate
Time frame: 4 years
1/3 FF
Filling fraction during the first third of the diastole
Time frame: 4 years
TPF/FT
Time to peak filling time/filling time
Time frame: 4 years
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