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Objective: To evaluate progression of left ventricular (LV) structural and functional changes in patients with type 1 diabetes and effect of glycemic control on these changes. Methods: A prospective, longitudinal study consisted of 48 patients who were originally studied. At two years follow-up, 44 patients were reevaluated, 35 patients from the original study were reevaluated after another 2 years for the 3rd time using the same protocol. The control group comprised 30 age-and sex-matched healthy volunteers. All studied patients were subjected to full history taking, clinical and cardiac examination. M-mode echocardiography was done, blood samples were taken and examined for HbA1c and urine samples were tested for the presence of albuminuria. ANOVA for repeated measurements, t-test for dependent and independent variables, and Mann-Whitney U test were used for statistical analyses. Results: Seven (14.6%) of our patients had LV hypertrophy, 23 (47.9%) patients had diastolic dysfunction and ten patients only achieve improvement in glycemic control. Duration of diabetes was significantly higher in patients with LV hypertrophy (LVH) (p<0.05). Patients with no improvement in glycemic control had a significant increase in interventricular septum (IVS) and left ventricular posterior wall (LVPW) in the third examination (p<0.05 for both). Conclusion: Prevalence of LVH and diastolic dysfunction among diabetic patients is high. Glycemic control in diabetic patients could not improve LVH or diastolic dysfunction. On the other hand, failure to achieve glycemic control leads to deterioration in structural parameters. (Anadolu Kardiyol Derg 2012; 12: 498-507) [ABSTRACT FROM AUTHOR]

Objective: To evaluate progression of left ventricular (LV) structural and functional changes in patients with type 1 diabetes and effect of glycemic control on these changes. Methods: A prospective, longitudinal study consisted of 48 patients who were originally studied. At two years follow-up, 44 patients were reevaluated, 35 patients from the original study were reevaluated after another 2 years for the 3rd time using the same protocol. The control group comprised 30 age-and sex-matched healthy volunteers. All studied patients were subjected to full history taking, clinical and cardiac examination. M-mode echocardiography was done, blood samples were taken and examined for HbA1c and urine samples were tested for the presence of albuminuria. ANOVA for repeated measurements, t-test for dependent and independent variables, and Mann-Whitney U test were used for statistical analyses. Results: Seven (14.6%) of our patients had LV hypertrophy, 23 (47.9%) patients had diastolic dysfunction and ten patients only achieve improvement in glycemic control. Duration of diabetes was significantly higher in patients with LV hypertrophy (LVH) (p<0.05). Patients with no improvement in glycemic control had a significant increase in interventricular septum (IVS) and left ventricular posterior wall (LVPW) in the third examination (p<0.05 for both). Conclusion: Prevalence of LVH and diastolic dysfunction among diabetic patients is high. Glycemic control in diabetic patients could not improve LVH or diastolic dysfunction. On the other hand, failure to achieve glycemic control leads to deterioration in structural parameters. [ABSTRACT FROM AUTHOR]

Objective: To estimate the influence of body composition and body mass index on blood pressure in type 1 diabetic patients. Methods: This cross-sectional, observational study included 45 type 1 diabetic patients and 30 age and sex matched healthy volunteers. Blood pressure, anthropometric measurements, and body composition by dual X-ray absorptiometry (DXA) were done for all patients and controls. T-test, one way ANOVA and multiple regressions were used for statistical analyses. Results: Twenty diabetic patients (44.4%) had hypertension. Hypertensive diabetic patients had the highest total fat mass %, soft tissue fat mass %, abdomen fat % and fat/lean ratio followed by non hypertensives and the least was the controls (p=0.0001). Abdominal fat % was the only parameter significantly associated with mean arterial blood pressure (β-5.8, 95% CI: 3.7-8.0, p=0.0001) and systolic blood pressure (β-8.6, 95% CI: 5.4-11.9, p=0.0001) by stepwise multiple regression analysis in the diabetic patients. In the contrary, abdominal fat % (β-2.7, 95% CI: 0.9-4.5, p=0.006), duration of diabetes (β-2.5, 95% CI: 1.4-3.5, p=0.0001) and fat/ lean ratio (β-11.7, 95% CI: 1.5-21.9, p=0.03) were related to diastolic blood pressure. Conclusion: Diabetes is associated with an increase in body fat especially abdominal, which leads to an increase in insulin resistance and decrease in lean mass. In type 1 diabetic patients, blood pressure depends on body mass index SDS and fat mass. Abdominal fat is the only factor related to mean arterial blood pressure and systolic blood pressure. [ABSTRACT FROM AUTHOR]

OBJECTIVE: To estimate the influence of body composition and body mass index on blood pressure in type 1 diabetic patients. METHODS: This cross-sectional, observational study included 45 type 1 diabetic patients and 30 age and sex matched healthy volunteers. Blood pressure, anthropometric measurements, and body composition by dual X-ray absorptiometry (DXA) were done for all patients and controls. T-test, one way ANOVA and multiple regressions were used for statistical analyses. RESULTS: Twenty diabetic patients (44.4%) had hypertension. Hypertensive diabetic patients had the highest total fat mass %, soft tissue fat mass %, abdomen fat % and fat/lean ratio followed by non hypertensives and the least was the controls (p=0.0001). Abdominal fat % was the only parameter significantly associated with mean arterial blood pressure ([beta]-5.8, 95% CI: 3.7-8.0, p=0.0001) and systolic blood pressure ([beta]-8.6, 95% CI: 5.4-11.9, p=0.0001) by stepwise multiple regression analysis in the diabetic patients. In the contrary, abdominal fat % ([beta]-2.7, 95% CI: 0.9-4.5, p=0.006), duration of diabetes ([beta]-2.5, 95% CI: 1.4-3.5, p=0.0001) and fat/ lean ratio ([beta]-11.7, 95% CI: 1.5-21.9, p=0.03) were related to diastolic blood pressure. CONCLUSION: Diabetes is associated with an increase in body fat especially abdominal, which leads to an increase in insulin resistance and decrease in lean mass. In type 1 diabetic patients, blood pressure depends on body mass index SDS and fat mass. Abdominal fat is the only factor related to mean arterial blood pressure and systolic blood pressure. [ABSTRACT FROM AUTHOR]

Objective: To determine the prevalence and clinical characteristics of cardiac autonomic neuropathy in type 1 diabetic patients who were followed up for 4 years to shed further light on the natural progression of cardiac autonomic neuropathy. Methods: It is a prospective cohort observational study, consisted of 57 patients who were originally studied using the standard tests proposed by Ewing and Clarke (1985). At two years follow up, 46 patients were reevaluated, 55 patients from the original study were reevaluated after another 2 years for the 3rd time using the same protocol. The control group comprised 30 age and sex matched healthy volunteers. McNemar test, ANOVA for repeated measurements, paired t test and unpaired t test were used for statistical analyses. Results: The prevalence of established cardiac autonomic neuropathy (CAN) at the beginning was 14%. Q-Tc intervals were found to be significantly higher in patients with abnormal cardiovascular reflex (CVRs) in the 2nd examination (0.4±0.04 vs 0.5±0.05 sec, p=0.006). Eighteen patients showed deterioration of their CVRs test between 1st and 3rd examination. There was deterioration of their glycemic control guided by glycosylated hemoglobin (8.5±1.4 vs 9.9±1.5%, p=0.05*) and albumin/creatinine ratio (4.4±4.0 vs 28.2±28.0 mg/g creatinine, p= 0.04). On the other hand, 12 patients showed regression of their CVRs test. Only their insulin dose showed significant decrease (1.8±1.3 vs 1.1±0.3 dose/kg, p=0.02). Conclusion: The prevalence of established CAN in diabetic patients is high at the beginning of the study. Glycosylated hemoglobin, systolic and diastolic blood pressure were significantly increased in diabetics with deterioration of their CAN. However, the dose of insulin was significantly decreased in diabetics with regression of their CAN. [ABSTRACT FROM AUTHOR]