Risk Factors Associated with Left Ventricular Diastolic Dysfunction in Type 2 Diabetic Patients without Hypertension.
BACKGROUND
Hypertension and age are recognized as important risk factors for left ventricular (LV) diastolic dysfunction. Some studies have shown that diabetes itself may also be an independent risk factor for LV diastolic dysfunction, although this is controversial. The aim of this study was to determine the factors associated with LV diastolic dysfunction in patients with type 2 diabetes in the absence of hypertension or ischemic heart disease (IHD).


METHODS
Participants in this study consisted of 65 type 2 diabetes patients (M : F = 45 : 20; mean age 51 [26 to 76] years; mean body mass index [BMI] 25.0 +/- 2.5 kg/m(2)) without hypertension, heart disease, or renal disease. Individuals with ischemic electrocardiographic changes were excluded. LV diastolic function was evaluated by Doppler echocardiographic studies.


RESULTS
Fifteen patients (23.1%) showed LV diastolic dysfunction on Doppler echocardiographic studies. Patients with LV diastolic dysfunction were older than those without diastolic dysfunction (60.0 +/- 2.5 vs. 50.5 +/- 1.9 years; P < 0.01). After adjusting for age and sex, BMI was higher (26.6 +/- 0.7 vs. 24.6 +/- 0.3 kg/m(2); P < 0.01) and diabetes duration was longer (9.65 +/- 1.48 vs. 4.71 +/- 0.78 years; P < 0.01) in patients with LV diastolic dysfunction than in those without diastolic dysfunction. There were no differences in sex, smoking, blood pressure, lipid profiles, hemoglobin A(1)C, fasting glucose, fasting insulin, or diabetic microvascular complications between the LV diastolic dysfunction group and the normal diastolic function group. After adjusting for age, sex, and BMI, diabetes duration was found to be independently associated with LV diastolic dysfunction (odds ratio 1.38; confidence interval 1.12 to 1.72; P = 0.003).


CONCLUSIONS
These results suggest that diabetes duration may be a risk factor for LV diastolic dysfunction in type 2 diabetic patients without hypertension or IHD.
Noh
Jung Hyun
JH
Department of Internal Medicine, Inje University College of Medicine, Goyang, Korea.
Doh
Joon Hyung
JH
Lee
Sung Yun
SY
Kim
Tae Nyun
TN
Lee
Hyuk
H
Song
Hwa Young
HY
Park
Jeong Hyun
JH
Ko
Kyung Soo
KS
Rhee
Byoung Doo
BD
Kim
Dong Jun
DJ