The independent relationship between creatinine clearance, microalbuminuria and circadian blood pressure levels in newly diagnosed essential hypertensive and type 2 diabetic patients.
ABSTRACT BACKGROUND AND OBJECTIVES: Increased evidence suggests that apart from patients with increased albumin excretion and decreased glomerular filtration rate (GFR); there are also patients with type 2 diabetes with decreased GFR but without albuminuria. The exact pathophysiologic mechanisms regarding these clinical conditions are not known. We suggest that different blood pressure (BP) levels may be one the factors for these different clinical conditions. However, before labeling BP as a causative factor; one must show whether BP levels are different in these patients. Thus the current study was performed to analyze the relationship between creatinine clearance, microalbuminuria and circadian blood pressure levels in newly diagnosed essential hypertensive and type 2 diabetic patients. METHODS: Medical history, physical examination, laboratory analysis and ambulatory blood pressure measurements (ABPMs) were analyzed. 24-h urine specimens were collected to measure creatinine clearance and albumin excretion RESULTS: In total 216 patients were included which were divided into 4 groups: group 1 composed of 90 patients with normal GFR and without microalbuminuria (MA), group 2 composed of 50 patients with normal GFR and with MA, group 3 composed of 36 patients with decreased GFR and without MA and group 4 composed of 40 patients with both decreased GFR and MA. The ratio of dippers vs. non dippers was not different between group 1, group 2 and group 3 patients. However ratio of dippers was higher in group 1 when compared to group 4 (P: 0.003) and group 4 patients have an odds of 7.678 (CI: 1.657-35.576, P: 0.009) for non-dapping status when compared to patients in group 1. CONCLUSION: In conclusion, ABPM measurements were highest in patients with both decreased GFR and MA, whereas they are lowest in patients with normal GFR and normal UAE.
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ABSTRACT: Abstract Background: Microalbuminuria is an important risk factor for cardiovascular diseases. Microalbuminuria may be seen due to hypoxemia in patients with chronic obstructive pulmonary disease (COPD). Objectives: In this study, we investigated prevalence and relationship of microalbuminuria with clinical and physiological parameters in patients with COPD. Method: During the research, 66 consecutive patients with COPD and 40 cases smokers with normal spirometry were included. The urinary albumin creatinin ratio (UACR) was calculated according to previously described formula. The presence of microalbuminuria was defined as UACR being ≥20 in men and ≥30 in women. The severity index of chronic diseases was evaluated by using MCIRS. Results: The rate of presence of microalbuminuria and UACR were higher in patients with COPD than smokers with normal spirometry. Pearson correlation analysis showed a significant inverse relationship between UACR and PaO2, FEV1%, FVC%. On the other hand, there was a positive relationship between UACR and BODE index. There was a significant relationship between the presence of microalbuminuria with PaO2 and BODE index. In the linear regression model, there was a negative relationship between UARC and PaO2 yet there was a significantly positive relationship between UARC and MCIRS score, BODE index. In the logistic regression model, the presence of microalbuminuria showed significant associations with PaO2, BODE index. Conclusion: Microalbuminuria may be seen in patients with COPD, depending on the severity of disease and hypoxemia. Microalbuminuria in patients with severe COPD should be examined in regular periods for risk of cardiovascular morbidity or mortality.COPD Journal of Chronic Obstructive Pulmonary Disease 04/2013; 10(2):186-92. · 2.31 Impact Factor