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The effect of metformin on glycemic control, serum lipids and lipoproteins in diet alone and sulfonylurea-treated type 2 diabetic patients with sub-optimal metabolic control.

OBJECTIVE: To see if Metformin Monotherapy affects glycemic control, serum lipid or lipoprotein levels in the treatment of type 2 diabetes who were poorly controlled with diet alone or despite maximal doses of (sulfonylurea) oral glucose lowering agents. DESIGN: A prospective, clinical intervention trial conducted between 1996-1997. SETTING: Two out patient diabetic clinics of Karachi. PATIENTS AND METHODS: A 12-week prospective clinical intervention trial. A total of 30 type 2 diabetic subjects were enrolled, of Whom 21 (12 men and 9 women) completed the study period. Their ages ranged between 35 and 70 years, (mean +/- SD 53.3 +/- 9.31) years, with a mean duration since diagnosis of diabetes was 4.5 +/- 2.3 years, body mass index (mean +/- SD) 26.8 +/- 3.53 kg/m2. They were previously treated with diet alone or had already been taking maximum doses of sulfonylurea monotherapy with suboptimal glycemic control, i.e., raised fasting blood glucose concentrations of 6-15 mmol/L or (108-270 mg/dL) on two occasions, with significant hyperglycemic symptoms. The patients were treated with metformin monotherapy with a follow up of 12 weeks. The initial dosage was 500 mg twice daily, and the dosage was increased to two or three tablets depending on the patient's metabolic changes. By comparing before and after 12 weeks therapy with metformin we assessed the importance of baseline parameters (glycemic control, serum lipid and lipoprotein concentrations, and measures of change in body weight and body mass index). RESULTS: Metformin therapy significantly decreased fasting blood glucose levels in all patients [(mean +/- SD) 227.2 +/- 37.5 to 168.6 +/- 20.5 mg/dl, p < 0.001)]. Serum total cholesterol decreased marginally [(mean +/- SD) 200.3 +/- 18.7 to 181.4 +/- 19.4 mg/dl, p < 0.01)]. Serum total triglycerides concentration also decreased [(mean +/- SD) 195.9 +/- 31.9 to 174.2 +/- 26.6 mg/dl, P < 0.01)]. Low-density lipoproteins declined [(mean +/- SD) 123.5 +/- 16.9 to 105.5 +/- 19.1 mg/dl, P < 0.01)], and very-low density lipoprotein cholesterol also decreased [(mean +/- SD) 39.2 +/- 6.4 to 34.8 +/- to 5.3 mg/dl, P < 0.01)]. Whereas, high-density lipoprotein cholesterol tended to increase [(mean +/- SD) 37.7 +/- 5.1 to 39.5 +/- 4.9 mg/dl, P < 0.01)], while no significant changes occurred in body weight and body mass index. CONCLUSION: Metformin treatment was effective, safe, and generally well tolerated.

Adult↗

Blood thrombogenicity in type 2 diabetes mellitus patients is associated with glycemic control.

OBJECTIVES: This study was designed to determine whether blood thrombogenicity is related to chronic glycemic control in type 2 diabetes mellitus (T2DM). BACKGROUND: Type 2 diabetes mellitus is associated with accelerated atherosclerosis and a high rate of arterial thrombotic complications. Whether increased blood thrombogenicity is associated with glycemic control has not been properly tested. METHODS: Forty patients with T2DM with hemoglobin A1c (HbA1c) > or =7.5% were selected. Maintaining their current hypoglycemic therapies, patients were randomized into a conservative (diet modification plus placebo) or intensive (diet modification plus troglitazone) hypoglycemic regimen for three months. Blood thrombogenicity was measured at baseline and after three months with the Badimon ex vivo perfusion chamber and assessed as platelet-thrombus formation. The repeated measurements allowed every patient to be his/her own control. RESULTS: Patients in both groups (48% and 74% of the conservative and intensive groups, respectively) improved glucose control (HbA1c reduction > or =0.5%), showing a significant decrease in blood thrombogenicity. A significant positive correlation was observed between the reduction in thrombus formation and the reduction in HbA1c (r = 0.47, p < 0.01). The reduction in HbA1c achieved by both treatments was comparable. Patients without glycemic improvement showed no change in blood thrombogenicity. Improved glycemic control was the only significant predictor of a decrease in blood thrombogenicity. CONCLUSIONS: In T2DM, there is an association between improved glycemic control and blood thrombogenicity reduction. The effect of glycemic control on the thrombotic complications of T2DM patients deserves further investigation.

Analysis of Variance↗

Effects of glycemic control on plasma 3-deoxyglucosone levels in NIDDM patients.

OBJECTIVE: To clarify the effects of glycemic control on the level of 3-deoxyglucosone (3-DG), a reactive dicarbonyl compound, in plasma from diabetic patients. RESEARCH DESIGN AND METHODS: Fasting plasma samples were collected from 15 healthy volunteers and 27 patients with NIDDM. Samples were collected from six poorly controlled patients before and after improved glycemic control for at least 2 months. Plasma 3-DG was determined by high-performance liquid chromatography (HPLC) as a 2,3-diaminonaphthalene derivative. We observed the relationship of 3-DG levels with plasma glucose or HbA1c levels and examined changes in 3-DG levels after glycemic control in the six patients. RESULTS: Plasma 3-DG was significantly more increased in diabetic patients than in nondiabetic control subjects (31.8 +/- 11.3 vs. 12.8 +/- 5.2 ng/ml, means +/- SD, P < 0.001), but there was an approximately threefold difference in 3-DG levels among diabetic patients. 3-DG levels were well correlated with plasma glucose (r = 0.56, P < 0.005) and HbA1c levels (r = 0.74, P < 0.001) in diabetic patients. The improvement of hyperglycemia in six patients resulted in a significant decrease in 3-DG (35.2 +/- 13.2 vs. 21.3 +/- 3.4 ng/ml, P < 0.05). CONCLUSIONS: The results indicate that the plasma glucose level is a predominant determinant of the plasma 3-DG level in diabetic patients and good glycemic control would be important to reduce this reactive metabolite.

Adult↗

Diabetes health beliefs, self-care behaviors, and glycemic control among older adults with non-insulin-dependent diabetes mellitus.

This descriptive study examined the relationships between diabetes-specific health beliefs and adherence to the diabetes regimen and glycemic control in 102 older subjects with non-insulin-dependent diabetes mellitus. Health beliefs and self-care behaviors were assessed by self-report questionnaires. Glycemic control was assessed by HbA1c values. Perceived barriers to treatment were related to adherence, while perceived severity of disease was related to glycemic control. No significant associations were found between other health belief model subscales and adherence or glycemic control. Subjects not on diabetes medication had better glycemic control than those on medication. Subjects with more recently diagnosed diabetes also had better glycemic control. Practice and research attention should include older diabetic persons' perceived barriers to performing diabetes-specific self-care behaviors and perceived severity of the disease to identify potential health beliefs that may need to be altered for improving glycemic control.

Aged↗

Renal protection in diabetes: role of glycemic control.

Diabetes is the most common cause of ESRD in Western countries. This article describes the impact of glycemic control in the various stages of the disease and considers the impact of tight glycemic control on the development and progression of diabetic nephropathy (DN). The Diabetes Control and Complications Trial and the United Kingdom Prospective Diabetic Study have demonstrated in type 1 and type 2 diabetes that intensive glycemic control significantly reduces the risk for development of microalbuminuria. Although observational studies suggest an impact of glycemia also on the progression of DN, fewer data are available on the impact of improved metabolic control in secondary prevention. The long-term follow-up of the patients who participated in the Diabetes Control and Complications Trial (Epidemiology of Diabetes Interventions and Complications Study) demonstrated a sustained effect of previous tight glycemic control on both development and progression of DN. Finally, long-term normoglycemia, achieved by pancreas transplantation, is able not only to prevent the development of early diabetic glomerulopathy in kidney transplant recipients but also to halt progression and induce regression of the established diabetic renal lesions in nonuremic patients. Taken together, these studies strongly demonstrate that improvement in glucose control is the most important therapeutic approach in primary prevention. Tight glycemic control also is important in slowing progression of DN, and if blood glucose is normalized, then regression of DN can be achieved. Therefore, a target of glycated hemoglobin levels <7% should be recommended in all patients with diabetes.

Blood Glucose↗

Plasma lipoprotein(a) levels are not influenced by glycemic control in type 1 diabetes.

OBJECTIVE: To determine the influence of glycemic control improvement with intensive therapy on lipoprotein(a) [Lp(a)] concentrations in type 1 diabetic patients. RESEARCH DESIGN AND METHODS: A total of 105 poorly controlled type 1 diabetic patients (60 men, 45 women) without diabetic complications participated in a longitudinal study performed in a tertiary referral center, to compare lipid, lipoprotein, and Lp(a) levels before and after 3 months of intensive therapy with multiple insulin doses. Lp(a) levels were measured by the Terumo method. Differences between the two periods were assessed by the paired t test and Wilcoxon's test. RESULTS: After 3 months of intensive therapy, all patients exhibited improved glycemic control. HbA1c decreased from 8.9 +/- 2.4 to 6.5 +/- 1.6% (P < 0.0001), being < or =6% in 47% of patients. However, although a more favorable lipoprotein profile was obtained, no changes in Lp(a) concentrations were observed in the whole group of patients (16.7 +/- 17.3 vs. 17.2 +/- 17.7 mg/dl) or in patients with baseline Lp(a) levels above 30 mg/dl (47.1 +/- 14.8 vs. 47.4 +/- 18.9 mg/dl) or below 30 mg/dl (9.6 +/- 7.3 vs. 10.2 +/- 6.7 mg/dl). In addition, patients reaching HbA1c < or =6 or >6% presented similar Lp(a) levels (19.7 +/- 18.0 vs. 15.0 +/- 17.4 mg/dl), and changes in Lp(a) did not correlate with those observed in HbA1c. CONCLUSIONS: These data demonstrate that the improvement of glycemic control does not influence plasma Lp(a) concentrations in type 1 diabetic patients independently of baseline Lp(a) levels and the degree of glycemic control.

Adult↗

The relationship between glycemic control and morbidity and mortality for diabetics on dialysis.

This study was conducted to determine the association between glycemic control and clinical outcomes of diabetic patients maintained on chronic dialysis. The study group consisted of 226 diabetics (60 Type I and 166 Type II) classified as having either good glycemic control (> 50% of blood glucose determinations within 3.3-11.1 mmol/L) or poor glycemic control (< 50% of blood glucose measurements > 3.3 and < 11.1 mmol/L). The following variables were analyzed in each group: demographics; vascular and diabetic complications; laboratory values; and patient survival. In comparison to diabetics with poor control (Type I, n = 44; Type II, n = 57), those with good control, either Type I (n = 16), or Type II (n = 109), were dialyzed for longer periods and had shorter hospitalizations, lower prevalence rates of myocardial infarctions, congestive heart failure, orthostatic hypotension, gastroparesis and enteropathy, and higher mean serum albumin. Mean patient survival by life-table analysis was as follows: Type I diabetics, good control 128.9 + 8.1 months, poor control 29.5 + 5.0 months, p = 0.0014. Type II diabetics, good control 56.9 + 6.8 months, poor control 22.8 + 4.6 months, p < 0.0001. Good glycemic control during the first 6 months of dialysis predicted long-term survival for Type II but not for Type I diabetics. Poor glycemic control is associated with increased morbidity from vascular and diabetic complications, malnutrition, and shortened survival in diabetics on chronic dialysis.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗

[Influence on glycemic control of improved diabetic gastroparesis by long-term cisapride therapy].

To investigate the effect on glycemic control of improving diabetic gastroparesis, we evaluated symptoms (scored), gastric motor functions (solid and liquid gastric emptying studies and electrogastrography), and glycemic control in 11 patients with diabetic gastroparesis (5 men, 6 women, 50.4 +/- 4.5 years old) before and after treatment with cisapride (15 mg/day p.o., 12 weeks). None of the patients had organic abnormalities on gastrointestinal endoscopy. The dysmotility symptom score (maximum: 18) on cisapride significantly improved from 13.1 to 4.0 (p < 0.01). Retention rates at 15 and 80 minutes after ingestion improved in a solid-food gastric emptying study using a test meal of instant noodles labeled with 37 MBq (1 mCi) technetium-99m (both p < 0.05). Liquid gastric emptying, evaluated using a sulfamethizole technique, also improved but not significantly. Electrogastrography revealed no significant changes after treatment, but the postprandial rate of normal frequency waves tended to increase. Glycemic control was assessed based on HbA1C, fructosamine and M value. There were no significant changes in glycemic control after treatment with cisapride. We conclude that long-term administration of cisapride reduced dysmotility symptoms and improved solid and liquid gastric emptying without adversely affecting glycemic control.

Adult↗

[Cardiovascular risk factors in children with type 1 diabetes and their relationship with the glycemic control].

Diabetics have an increased risk of cardiovascular disease (CVD). The objective of this work was to evaluate the cardiovascular risk factors in infant-juvenile type 1 diabetics and their association with the degree of glycemic control. A total of 52 patients, aged 5-15 years, were studied and compared with 37 control subjects. The degree of glycemic control, lipid profile, plasma fibrinogen, microalbuminuria and blood pressure were investigated. The patients were grouped in diabetics with good glycemic control [DGGC, glycosilated hemoglobin (HbA1c) < 8%] and poor glycemic control [DPGC, HA1c > or = 8%]. Diabetic patients presented incremented values of total cholesterol (4.1 +/- 0.9 vs. 3.1 +/- 0.7 mmol/l, p = 0.0008), LDL-cholesterol (2.4 +/- 0.9 vs. 1.7 +/- 0.7 mmol/l, p = 0.0001), HDL-cholesterol (1.2 +/- 0.3 vs. 1.0 +/- 0.2 mmol/l, p = 0.0002), with respect to control group. Eighty three per cent of diabetics showed a poor glycemic control. There were not significant differences in lipid profile between DGGC and DPGC, excepting HDL-cholesterol which was higher in DPGC group (p = 0.007). Plasma fibrinogen levels were similar in diabetics and controls, but they were higher in DPGC than in DGGC (265 +/- 46 vs. 229 +/- 22 mg/dl, p = 0.02). Three patients with microalbuminuria and none with hypertension were detected. In these patients the most pronounced risk factors for CVD were dyslipidemia and hyperglycemia, which justify the need for the early detection of these factors as well as strict metabolic control.

Adolescent↗

Issues surrounding tight glycemic control in people with type 2 diabetes mellitus.

OBJECTIVE: To review the prospective evidence surrounding the issue of tight glycemic control in people with type 2 diabetes mellitus and resultant long-term complications. DATA SOURCE: Conference proceedings and a MEDLINE search (1966-February 1998) identified pertinent English-language publications on type 2 diabetes in humans. Key search terms included insulin resistance, diabetes mellitus, non-insulin-dependent, macrovascular complications, microvascular complications, and intensive glycemic control. STUDY SELECTION: Selection of prospective epidemiologic and clinical studies were limited to those focusing on the management of type 2 diabetes. All articles with pertinent information relevant to the scope of this article were reviewed. DATA SYNTHESIS: The pathophysiology of type 1 and type 2 diabetes differ; however, both share chronic complications that significantly affect morbidity and mortality. People with type 1 diabetes have an absolute deficiency of insulin, whereas people with type 2 diabetes have varying degrees of insulin resistance and an inadequate compensatory insulin secretory response. The Diabetes Control and Complications Trial (DCCT) has clearly indicated that intense control of blood glucose in type 1 diabetes prevents and slows the progression of microvascular (i.e., retinopathy, nephropathy) and neuropathic complications. The Kumamoto study showed similar results in nonobese patients with type 2 diabetes. Intense insulin therapy in both populations has proven advantageous, thus supporting a common pathophysiologic process for the microvascular and neuropathic complications. Trends were seen toward fewer macrovascular (atherosclerotic disease) complications in the intensive insulin arm of the DCCT. Conversely, trends were seen toward an increase in macrovascular complications in the VA Cooperative study in people with type 2 diabetes using intensive insulin therapy. This may suggest a discordance in the pathophysiology of macrovascular disease between type 1 and type 2 diabetes. Additionally, it remains uncertain whether tight glycemic control prevents the onset or slows the progression of macrovascular disease. Two studies (the University Group Diabetes Program and the Veterans Affairs Cooperative Study on Glycemic Control and Complications in Type 2 Diabetes) to date have examined pharmacotherapy options for patients with type 2 diabetes and resultant macrovascular complications. It has yet to be determined whether any therapeutic intervention will decrease the morbidity and mortality of macrovascular disease in this population. CONCLUSIONS: In type 2 diabetes, limited prospective evidence does support tight glycemic control to help prevent or slow the progression of microvascular and neuropathic complications. It is uncertain whether tight glycemic control decreases macrovascular complications and which pharmacotherapeutic agent(s) is/are the best options. However, therapy that improves glucose control in combination with aggressive risk factor management should be initiated and enforced in patients with type 2 diabetes in an effort to reduce long-term complications.

Blood Glucose↗

Predictors of glycemic control and short-term adverse outcomes in youth with type 1 diabetes.

OBJECTIVES: To examine predictors of glycemic control and to assess how glycemic control affects the incidence of short-term adverse outcomes in a pediatric population with type 1 diabetes. STUDY DESIGN: Three hundred youth, aged 7 to 16 years, with type 1 diabetes who were receiving diabetes specialty care were followed up prospectively for 1 year. Treatment plans and frequency of adverse outcomes were ascertained by questionnaires and medical record review. Incidence rates of adverse outcomes were compared among 3 strata of the population, representing tertiles of baseline glycosylated hemoglobin (HbA1c). RESULTS: Blood glucose monitoring frequency was the sole modifiable predictor of HbA1c (P <.0001). Overall incidence rate of hospitalization was 13 per 100 person-years, more than 3 times the rate in the general pediatric population and significantly higher in the upper HbA1c tertile compared with the other strata (P =.001). Rate of emergency department use was 29 per 100 person-years and did not differ significantly among tertiles. Incidence of severe hypoglycemia was 62 per 100 person-years and notably high even in those with poorest glycemic control. CONCLUSION: Despite improvements in diabetes care, the incidence of short-term adverse events in children with type 1 diabetes remains high, particularly in those with poorest glycemic control.

Adolescent↗

Glycemic control from 1988 to 2000 among U.S. adults diagnosed with type 2 diabetes: a preliminary report.

OBJECTIVE: To describe the changes in demographics, antidiabetic treatment, and glycemic control among the prevalent U.S. adult diagnosed type 2 diabetes population between the National Health and Nutrition Examination Survey (NHANES) III (1988-1994) and the initial release of NHANES 1999-2000. RESEARCH DESIGN AND METHODS: The study population was derived from NHANES III (n = 1,215) and NHANES 1999-2000 (n = 372) subjects who reported a diagnosis of type 2 diabetes with available data on diabetes medication and HbA(1c). Four therapeutic regimens were defined: diet only, insulin only, oral antidiabetic drugs (OADs) only, or OADs plus insulin. Multiple logistic regression was used to examine changes in antidiabetic regimens and glycemic control rates over time, adjusted for demographic and clinical risk factors. The outcome measure for glycemic control was HbA(1c). Glycemic control rates were defined as the proportion of type 2 diabetic patients with HbA(1c) level <7%. RESULTS: Dietary treatment in individuals with diabetes decreased as the sole therapy from 27.4 to 20.2% between the surveys. Insulin use also decreased from 24.2 to 16.4%, while those on OADs only increased from 45.4 to 52.5%. Combination of OADs and insulin increased from 3.1 to 11.0%. Glycemic control rates declined from 44.5% in NHANES III (1988-1994) to 35.8% in NHANES 1999-2000. CONCLUSIONS: Treatment regimens among U.S. adults diagnosed with type 2 diabetes have changed substantially over the past 10 years. However, a decrease in glycemic control rates was also observed during this time period. This trend may contribute to increased rates of macrovascular and microvascular diabetic complications, which may impact health care costs. Our data support the public health message of implementation of early, aggressive management of diabetes.

Administration, Oral↗

Child behavior problems and family functioning as predictors of adherence and glycemic control in economically disadvantaged children with type 1 diabetes: a prospective study.

OBJECTIVE: This prospective study examined how child behavior problems and family functioning predict adherence behavior and glucose regulation (glycemic control) in a sample of economically disadvantaged children. METHODS: Children with type 1 diabetes (N = 116; 58.6% African American) were assessed for externalizing and internalizing behavior problems and family adaptability and cohesion and followed for a mean of 3.8 years. Glycemic control (glycosylated hemoglobin [HbA1c]) was assessed at baseline and follow-up, and adherence was assessed at follow-up. RESULTS: Analyses controlled for baseline HbA1c and years to follow-up. Multivariate analyses indicated that better adherence was predicted by high family cohesion. Better glycemic control was predicted by high family cohesion, the absence of externalizing behavior problems, and the presence of internalizing behavior problems. In addition, tests of moderation indicated that better follow-up glycemic control occurred among girls from high cohesion families and younger children from low adaptability families. Although better adherence predicted better glycemic control, adherence did not mediate the relationships of behavior problems or family functioning with glycemic control. CONCLUSIONS: A child's behavior problems and family functioning may influence both adherence to the diabetes regimen and glycemic control several years later, suggesting the potential value of interventions that address child behavior and family functioning.

Adaptation, Psychological↗

Diabetic glycemic control and retinal blood flow.

The effect of strict glycemic control on retinal volumetric blood flow rate (Q) was investigated in 13 insulin-dependent diabetic patients with laser Doppler velocimetry and monochromatic fundus photography. Strict glycemic control was achieved by glucose monitoring and four daily insulin injections. Q was determined in a major retinal vein at baseline and then 5 days, 2 mo, and 6 mo after the institution of strict control. Level of retinopathy was assessed from stereocolor fundus photographs taken at baseline and 6 mo. After 6 mo of strict diabetic control, five eyes demonstrated progression (P) by one or more retinopathy levels, and eight eyes showed no progression (NP). At 5 days, there was a significant decrease in Q of 1.4 +/- 0.9 microliters/min (P less than 0.005) in NP eyes and a nonsignificant increase in Q of 1.2 +/- 1.7 microliters/min in P eyes. Changes in Q from baseline observed at 5 days were strongly correlated with changes in retinopathy level at 6 mo (r = 0.79, P less than 0.005). No significant changes in Q from baseline were observed at 2 and 6 mo. A lack of decrease in Q at 5 days was associated with the progression of retinopathy that occurs in some patients after the institution of strict glycemic control and may serve as a predictor for progression of retinopathy.

Adult↗

Effect of glycemic control on vitamin B12 metabolism in diabetes mellitus.

To determine the effect of glycemic control on vitamin B12 (B12) metabolism in diabetes mellitus, we studied B12 metabolism in 19 diabetic patients with poor glycemic control and 15 normal individuals. The diabetic patients had significantly higher total B12 binding capacity (3303 +/- 963 pg/ml), higher serum B12 levels (1173 +/- 503 pg/ml) and unsaturated B12 binding capacity (2131 +/- 902 pg/ml) when compared with the normal controls, but there was no difference in R-binder levels and the B12 binding ratio between the two groups. During a 2-week admission to establish glycemic control, the fructosamine levels in the diabetic patients decreased from 556 to 428 mumol/l and the total B12 binding capacity as well as unsaturated B12 binding capacity were significantly improved to the normal range (P < 0.01), but serum B12 levels, R-binder levels and the B12 binding ratio were not changed. There was a significant association between serum fructosamine levels and the total B12 binding capacity in poorly controlled diabetic patients and the decrease of fructosamine was correlated significantly with the change of total B12 binding capacity and serum B12 levels in diabetic patients. These results indicate the effects of glycemic control on B12 metabolism in diabetes mellitus.

Adult↗

Reduction of nosocomial infections in the surgical intensive-care unit by strict glycemic control.

OBJECTIVE: To investigate whether hyperglycemia in glucose-intolerant patients without diabetes could lead to increased nosocomial infections in the surgical intensive-care unit (ICU). METHODS: A prospective, randomized, controlled clinical trial was conducted in the surgical ICU of a large teaching hospital in Hartford, Connecticut. Adult patients admitted to a 12-bed surgical ICU requiring treatment of hyperglycemia (glucose values > or = 140 mg/dL) were randomly assigned to receive standard insulin therapy (target glucose range, 180 to 220 mg/dL) or strict insulin therapy (target glucose range, 80 to 120 mg/dL) throughout their ICU stay. Demographic data, comorbidities, and confounding variables were analyzed. Outcome measures included mean daily serum glucose values, mean daily insulin doses, and number of nosocomial infections during the ICU stay. RESULTS: The study was completed by 61 critically ill surgical patients (27 in the standard glucose control group and 34 in the strict glucose control group). A significant reduction (P<0.001) in mean daily glucose level was achieved in the strict glycemic control group (125 +/- 36 mg/dL) in comparison with the standard glycemic control group (179 +/- 61 mg/dL). Furthermore, a significant reduction (P<0.05) in the incidence of total nosocomial infections, including intravascular device, bloodstream, intravascular device-related bloodstream, and surgical site infections, was observed in the strict glucose control group in comparison with the standard glucose control group. The incidence of hypoglycemia (glucose levels <60 mg/dL) was significantly increased (P<0.001) in the strict glycemic control group in comparison with the standard glycemic control group (32% versus 7.4% of patients or 0.8% versus 0.1% of total serum glucose values, respectively). CONCLUSION: Strict glycemic control is a safe and effective method for reducing the incidence of nosocomial infections in a predominantly nondiabetic, general surgical ICU patient population.

Adult↗

Plasma 1,5-anhydro-D-glucitol as new clinical marker of glycemic control in NIDDM patients.

To elucidate the value of using plasma 1,5-anhydro-D-glucitol (AG) as a marker of glycemic control in diabetic patients, the relationship between the plasma concentration of AG and glucosuria was examined in 152 patients with non-insulin-dependent diabetes mellitus (NIDDM). After recovery from the deterioration of glycemic control in NIDDM patients had started, AG began to increase day by day. The recovery of plasma AG showed a constant linear increase curve when excellent glycemic control was attained. The ordinary daily recovery rate of plasma AG was estimated to be 0.3 microgram/ml, which was independent of body weight, sex, age, the difference in treatment, the duration of diabetes, or the level of plasma AG among NIDDM patients. This rate decreased according to the increase in urinary glucose. When we calculated the decrease rate of plasma AG (delta AG), assuming 0.3 microgram/day to be the maximum increase rate in a day, we found a high correlation between delta AG and urinary glucose at almost all AG levels except the normal range and observed that plasma AG (A) times urinary glucose (G) was relatively constant. The formula A x G = 16 is a simple equation for rough estimation of urinary glucose from the plasma AG concentration in a stable glycemic-controlled NIDDM patient, and we call it the A.G index. The plasma AG also correlated significantly with fasting plasma glucose (r = -.810) and glycosylated hemoglobin (r = -.856) in the same stable glycemic-controlled NIDDM patients. Based on these observations, we propose that plasma AG can serve as a new marker that may provide sensitive and analytical information about glycemic control.

Adult↗

Glycemic control and the risk of multiple microvascular diabetic complications.

BACKGROUND AND OBJECTIVES: Tight glycemic control in type 2 diabetes reduces risk of certain end-organ complications. However, among patients with one complication already, it is unknown whether tight glycemic control reduces the risk of subsequent complications in another organ. We sought to determine if glycemic control is associated with the risk of a second, distinct, end-organ diabetic complication. METHODS: Subjects were a retrospective cohort of 250 patients with type 2 diabetes, at least one microvascular diabetic complication, and at least one hemoglobin A1c (HbA1c) measurement after that complication. Proportional hazard models estimated the relative hazard of developing another diabetic complication in a second organ system, as predicted by either (1) mean HbA1c level over the study period or (2) first HbA1c after the initial complication. RESULTS: Thirty-eight patients had a second complication; the average follow-up duration was 3.7 years. The mean HbA1c model showed an adjusted relative hazard of 1.25 (95% confidence interval [CI]=1.04, 1.51) per percentage-point elevation in mean HbA1c. The first HbA1c model showed an adjusted relative hazard of 1.23 (95% CI=1.08, 1.40) per percentage-point elevation in first HbA1c. CONCLUSIONS: Among these type 2 diabetes patients with an initial complication, tight glycemic control was associated with reduced risk of additional complications in other organs.

Adult↗