Margaret McGill

The metabolic syndrome in type 1 diabetes: does it exist and does it matter?

The significance of the metabolic syndrome in type 1 diabetes is not well understood. This study aimed to estimate its prevalence and attendant complications. Four hundred twenty-seven type 1 diabetic subjects were grouped according to the presence or absence of metabolic syndrome (WHO criteria). Macro- and microvascular complications were compared between the groups as individual and as composite endpoints. Data were analyzed for the total cohort and in subgroups according to duration of diabetes quartiles (<6.9, 7-12.9, 13-19.9, and >20 years) and year of presentation. Fifteen percent of individuals fulfilled the WHO criteria for metabolic syndrome, and of these, 26.9% were insulin resistant, as compared with 3.4% of those without metabolic syndrome [odds ratio (OR)=8.9, P=.001]. Both BMI and metabolic syndrome showed an increasing trend from 1992 to 2003. Those with metabolic syndrome required significantly higher insulin dosage [0.9 (0.7-1.2) vs. 0.6 (0.5-0.9) units/kg, P=.03], were older [35.0 (26.2-47.3) vs. 29.7 (23.4-36.4) years, P=.002], and had longer duration of diabetes [19.7 (10.7-25.6) vs. 12.1 (6.3-17.9) years, P=.0001]. They also had a significantly higher macrovascular composite endpoint (OR=3.3, P=.02) as well as higher macrovascular and microvascular composite endpoint (OR=3.1, P=.0001). The prevalence of stroke (OR=22.8, P=.008), peripheral vascular disease (OR=7.3, P=.05), and severe retinopathy (OR=3.7, P=.01) is higher in subjects with metabolic syndrome in the >or=20-year quartile group; in addition, these subjects have higher macrovascular composite endpoint (OR=3.9, P=.03) and macrovascular and microvascular composite endpoint (OR=2.9, P=.03). This remained so even when subjects with albuminuria were excluded. Some individuals with type 1 diabetes can also have metabolic syndrome. They are more prone to complications and require even more intensive glycemic control and reduction of macrovascular risk factors.

New global recommendations: A multidisciplinary approach to improving outcomes in diabetes

Up to two-thirds of people with type-2 diabetes do not achieve glycaemic targets, increasing their risk of serious complications. New global recommendations from The Global Partnership for Effective Diabetes Management offer practical, simple advice for the diabetes management team to help individuals reach glycaemic goals. The recommendations focus on four areas: achieving optimal glycaemic control, targeting the underlying pathophysiology of the disease, treating earlier and intensively with combination therapy, and adopting a holistic approach. This article reviews the new recommendations and suggests that they offer a route to achieving guideline-based targets and improving outcomes in the real-life healthcare setting.

Which diabetic patients should receive podiatry care? An objective analysis

Abstract

Foot Bearing Pressure in Patients with Unilateral Diabetic Foot Ulcers

Foot ulceration due to neuropathy is a serious cause of morbidity in diabetes. Ulceration usually occurs at the part of the foot subjected to excessive mechanical pressure. A more generalized increase in pressure under the feet has also been shown to be a feature of many patients with diabetic neuropathy. In this study the electrodynogram was used to measure the pressure at seven positions under each foot. The maximum vertical foot bearing pressure was found to be higher in 11 diabetic patients with previously healed unilateral foot ulcers (10.6±5.9 kg cm−2) than in 11 diabetic patients who did not have such a history (4.2±1.3 kg cm−2). However there was no difference in pressure between the foot with previous ulceration and the contralateral foot (9.7±6.8 kg cm−2, 11.6±7.9 kg cm−2). Vertical foot bearing pressure was decreased by an average of 18% by wearing shoes padded with a Professional Protective Technology insole and the decrease was greater in patients with higher foot pressure. These results showed that increased vertical foot pressure is an important, but not the only, factor in determining the occurrence of foot ulcer.

Ethnic differences in the prevalence of hypertension and proteinuria in NIDDM

There are large ethnic differences in both the prevalence of diabetes and the pattern of clinical complications, especially diabetic nephropathy and coronary heart disease. The aim of this study was to compare ethnic differences in the prevalence of two important risk factors, hypertension and proteinuria, among 1845 consecutive patients with non-insulin-dependent diabetes mellitus (NIDDM) undergoing annual complications assessment. Using a well-established database and systematic methods of data collection, information on clinical, demographic and laboratory variables was compared among seven ethnic groups: Anglo-Celtic (n = 896), Italian (n = 246), Greek (n = 209), Arabic (n = 147), Chinese (n = 131), Indian (n = 115) and Aborigine (n = 101). The odds ratios (OR) for developing hypertension (relative to Anglo-Celtic subjects) were lower in all ethnic groups, especially Arabs (OR = 0.4), Indians (OR = 0.4) and Aborigines (OR = 0.6). By contrast, the odds ratios for proteinuria (relative to Anglo-Celts) were consistently higher in all ethnic groups, e.g. Arabs (OR = 3.0) and Aborigines (OR = 3.1), even after correction for age, duration of diabetes and glycaemic control. Thus, relative to Anglo-Celtic patients, other ethic groups are less likely to have hypertension and more likely to have proteinuria. These findings may have important implications for understanding the ethnic differences in onset and progression of diabetic nephropathy.

Abnormalities of ascorbic acid metabolism and diabetic control: differences between diabetic patients and diabetic rats.

Ascorbic acid is required in the synthesis of collagen and is also an important anti-oxidant. In a previous study, plasma ascorbic acid concentration was found to be decreased in diabetic patients but there was no relationship with blood glucose level. In the current study of diabetic patients, both plasma ascorbic acid and its urinary excretion correlated inversely with glycosylated hemoglobin level. Plasma ascorbic acid was also lower in diabetic rats but urinary ascorbic acid was elevated. The divergent trend in urinary ascorbic acid excretion observed in diabetic patients and diabetic rats may be due to difference in the ability of these two species to synthesize ascorbic acid. Difference in renal reabsorption of ascorbic acid may also be a relevant factor. The lower plasma and urinary ascorbic acid levels in diabetic patients with more severe hyperglycaemia indicates that this group of patients is particularly at risk of developing deficiency of this vitamin. As ascorbic acid has many important functions in the body, it may be necessary to supplement this vitamin in patients with chronically poorly controlled diabetes.

The team approach to diabetes management: partnering with patients

The recent United Nations (UN) Resolution on diabetes calls for action to curb the severe risks posed by diabetes and its complications, and encourages member states to improve awareness, treatment and care of diabetes worldwide. Overcoming barriers to good glycaemic control is a pressing need as we work towards fulfilling the UN resolution. In this article, the Global Partnership for Effective Diabetes Management highlights diabetes care strategies worldwide which employ a patient‐centered approach that has improved patient care and health outcomes. Examples include implementation of multidisciplinary teams and forging of effective patient partnerships to motivate and empower individuals with type 2 diabetes to take control of their condition. These real‐world case studies provide practical ways to facilitate effective diabetes care across the spectrum of resource settings worldwide.

Anti‐smoking Programme for Diabetic Patients: The Agony and the Ecstasy

It is generally accepted that people with diabetes should be encouraged to abstain from smoking but there are few data on the best strategy to implement this. In a preliminary survey of our diabetic patients, knowledge of the general and specific health effects of smoking was poor. In a prospective study of 70 diabetic smokers, only 50% agreed to participate in an anti‐smoking programme, and the drop‐out rate was high irrespective of whether the content of the programme was general or specific for diabetes. The enrolment rate was best 2 months after the diagnosis of diabetes and the drop‐out rate was highest in patients recruited immediately following diagnosis. According to self‐reported data, cigarette consumption fell after the first session of the anti‐smoking programme but this could not be verified by the measurement of plasma cotinine. It is concluded that an anti‐smoking counselling programme based on provision of information, within the context of a specialized diabetes centre, is not cost‐effective.

Medication Safety: an audit of medication discrepancies in transferring type 2 diabetes mellitus (T2DM) patients from Australian primary care to tertiary ambulatory care.

OBJECTIVE To identify, classify and determine the factors associated with medication discrepancies for type 2 diabetes mellitus (T2DM) patients, referred from primary care to a tertiary ambulatory clinic. DESIGN Retrospective audit of outpatient clinic records. SETTING Royal Prince Alfred Hospital (RPAH) Diabetes Ambulatory Care Centre. PARTICIPANTS 300 randomly selected adult T2DM patients who attended the Diabetes Centre between 01 January 2010 and 31 December 2011. MAIN OUTCOME MEASURES The rates and types of medication discrepancies were identified by comparing the structured nurse-patient interview (SNPI) with the primary care [General Practitioner (GP)] referral letter, where the SNPI was considered the best possible medication history. Discrepancies were identified as addition, omission, dose and insulin-type discrepancies. Each category was mutually exclusive. RESULTS Over 80% of referral letters contained at least one discrepancy with a median of two discrepancies per referral. Of a total of 744 discrepancies, the majority were omissions (58.9%). Insulins had the highest discrepancy rate. Factors independently associated with medication discrepancies were GP referral letter type, total number of medications and medication regimen type. CONCLUSIONS A high rate of medication discrepancies was found in GP referral letters for patients referred to this clinic. Automated GP referral letters and inaccurate GP records may have contributed to this, highlighting the need for routine medication reconciliation at transitions of care, to ensure prescribers have access to correct medication information to inform decision-making and ensure optimal patient outcomes.

From acute to chronic: monitoring the progress of Charcot's arthropathy.

The monitoring of Charcots arthropathy in patients with diabetes mellitus is twofold: 1) assessment of disease activity as the condition progresses from the acute to the chronic phase, and 2) identification of structural abnormalities and complications that may arise as a result of the disease. The former guides the clinician as to the duration of primary treatment, and the latter provides important information regarding the long-term prognosis and facilitates clinical decision making regarding other treatments including surgery, footwear, and orthoses. The mainstay of assessing disease activity remains thorough and regular assessment of swelling, temperature differences, and bony abnormalities. Radiographic assessment performed at baseline and periodically throughout the course of the disease will show stages of early fracture and fragmentation followed by eventual trabecular bridging, ankylosis of the affected joints, and sclerosis, heralding the chronic phase of the disease. Radiographic assessment also provides visualization of bony deformities and prominences. In addition to these assessments, changes may be further quantified by the use of infrared dermal thermography and quantitative bone scanning techniques. Careful clinical monitoring of patients is essential to optimize treatment for acute Charcots arthropathy and improve the long-term outcome for patients presenting with this condition.