Risk for cardiovascular events in an Italian population of patients with type 2 diabetes

Background and aim

This study aims to analyse the risk of cardiovascular events in a local cohort of patients with type 2 diabetes, and to evaluate the prognostic accuracy of four algorithms used to estimate cardiovascular risk: the Framingham study, United Kingdom Prospective Diabetes Study (UKPDS), Riskard study and Progetto Cuore.

Method and results

We analysed clinical charts of the Diabetes Clinics of Modena for the period 1991–95. Patients in the age range of 35–65 with type 2 diabetes and no previous cardiovascular disease were eligible. The incidence of new cardiovascular disease was compared with estimated rates deriving from the different functions. A stratification was obtained in subgroups at different cardiovascular risk, allowing comparison between the algorithms. A total of 1532 patients were eligible; women presented a worse cardiovascular risk profile. An absolute 10-year rate of cardiovascular events of 14.9% was observed. Comparing patients with events with event-free subjects, we found significant differences in systolic blood pressure, age at visit, smoking, high-density lipoprotein (HDL)-cholesterol, duration of diabetes, glycosylated haemoglobin (HbA1c) and co-morbidities. Comparing the estimated risk rate according to the different functions, Italian algorithms were more consistent with observed data; however, Progetto Cuore and Riskard show underestimation of events when applied to females.

Conclusions

Estimation of cardiovascular risk is dependent on the algorithm adopted and on the baseline risk of the reference cohort. Functions designed for a specific population, including risk variables peculiar for diabetes, should be adopted to increase the performance of such functions which is clearly unsatisfactory at present.     

Cardiovascular risk prediction model for Omanis with type 2 diabetes

Aim

To date, no cardiovascular risk assessment tool has been developed specifically for any Arabian population including Omanis. This study aims to develop a suitable cardiovascular risk prediction model in the form of a statistical equation, for Omanis with type 2 diabetes.

2型糖尿病合并冠心病患者心血管危险因素控制现状的调查

目的:根据指南要求,调查2型糖尿病合并冠心病患者主要心血管危险因素的控制情况,分析影响血糖的相关因素。方法:采用横断面调查方法,对收集的2型糖尿病合并冠心病者421例进行问卷调查、体格检查及血液检查,以获取一般资料、血糖、血压、血脂及体质量等。按指南标准计算各指标达标率。结果:HbA1c、收缩压、舒张压、HDL-C、TG、LDL-C和BMI的达标率,分别是61.9%、43.2%、69.3%、62.4%(男性)/50.1%(女性)、43.3%、63.1%和29.1%(男性)/32.9%(女性)。影响血糖的因素有饮食运动控制、规律用药和知晓血糖控制目标。结论:2型糖尿病合并冠心病患者控制现状与指南要求仍有差距,可通过加强患者的自我管理和糖尿病知识的认知,提高治疗质量。     

High-sensitivity cardiac troponin for risk prediction in patients with and without coronary heart disease

Background

In stable patients with unknown coronary anatomy, higher levels of cardiac troponin are associated with an increased risk of cardiovascular events. It was supposed that this association might be explained by the ability of cardiac troponin to detect minor myocardial necrosis which might be caused by subclinical coronary atherosclerosis. Thus, this analysis tested if the predictive value of high-sensitivity troponin T (hsTnT) in stable patients is dependent of the presence or absence of angiographically documented coronary heart disease.

Methods

Stable patients undergoing elective coronary angiography were enrolled (n = 2046). HsTnT was determined before diagnostic procedures. The patients were followed for up to seven years. Primary endpoint was all-cause mortality or non-fatal myocardial infarction. All endpoints were adjudicated by independent physicians. Results were adjusted to a clinical model including independent clinical predictors of the primary endpoint.

Results

Out of the 2046 patients enrolled, 1236 (60%) had a diagnosis of obstructive coronary heart disease. HsTnT predicted independently the primary endpoint (adjusted HR 1.33, 95%-CI 1.21–1.46, P < 0.001). The use of hsTnT in addition to the clinical model significantly improved discrimination (c-statistic: 0.751 to 0.773, P < 0.001) as well as reclassification of the primary endpoint (NRI = 0.362, P < 0.001). This significant improvement persisted across various subsets and was independent of the presence of clinically detectable coronary heart disease and other variables.

Conclusion

The use of hsTnT in addition to clinical variables significantly improves discrimination and reclassification of patients with respect to all-cause mortality or non-fatal myocardial infarction irrespective of the presence of clinically detectable coronary heart disease.

Clinical Trial Registration

ClinicalTrials.gov (Identifier: NCT00457236).     

Comparison of four cardiovascular risk prediction functions among Chinese patients with diabetes mellitus in the primary care setting

Aims/Introduction

To assess the feasibility, convergent validity and sensitivity of four cardiovascular risk prediction functions in Chinese diabetic patients in the primary care setting.

Materials and Methods

A cross‐sectional study of 1,140 diabetic patients was carried out to compare four cardiovascular risk functions, which were respectively developed from the Framingham heart study, the USA–People''s Republic of China Collaborative Study of Cardiovascular and Cardiopulmonary Epidemiology cohort (PRC), the United Kingdom Prospective Diabetes Study (UKPDS) and the Joint Asia Diabetes Evaluation program (JADE). Feasibility was assessed by the percentage of patients with complete data for risk prediction. Convergent validity was measured by Spearman''s rank correlation, paired Wilcoxon signed‐rank sum test and Bland–Altman plots. Effect size differences between clinical risk groups were used to assess the sensitivity.

Results

Risk prediction was feasible by the Framingham, UKPDS and PRC risk functions in more than 98% patients, whereas just 74% of patients had complete data for the JADE function. The annual total coronary heart disease (CHD) risk predicted by the JADE and the UKPDS functions showed excellent agreement with no significant difference, and a correlation of 0.8048. The Framingham and the PRC functions predicted significantly lower CHD risk than those by the UKPDS and the JADE functions. The UKPDS and the Framingham functions were more sensitive in differentiating clinical risk groups.

Conclusions

The UKPDS risk engine showed good feasibility, convergent validity and sensitivity in predicting CHD risk in Chinese diabetic patients. The JADE function showed excellent agreement with the UKPDS risk engine, but it was less feasible in the primary care setting.     

Cardiovascular disease risk prediction in type 1 diabetes: accounting for the differences

Present analyses used data from the Pittsburgh Epidemiology of Diabetes Complications Study, a prospective study of subjects with childhood type 1 diabetes (T1D), diagnosed between 1950 and 1980. Baseline exams took place 1986-1988 with biennial exams since. The Framingham risk equation was applied to generate the probability of risk for coronary heart disease (CHD) (MI, CHD death, or Q-waves) in 552 CHD free subjects who experienced 42 events over the 10-year follow-up period. Probabilities were split in to deciles. Expected and observed events were compared and demonstrated poor prediction. Risk factors previously found to be associated with CHD in T1D other than those in the Framingham risk function (age, smoking, cholesterol/HDLc, systolic blood pressure) were compared within the highest risk deciles. In men, elevated fibrinogen (p=0.007), white blood cell count (WBC) (p=0.037), albumin excretion rate (AER) (p=0.0001), and lower HDLc (p=0.048) were predictive. In females, higher Beck Depression Inventory (p=0.008), HbA1 (p=0.008), AER (p=0.01), LDLc (p=0.007), fibrinogen (p=0.006), WBC (p=0.005), non-HDLc (p=0.0005), WHR (p=0.003), and estimated glucose disposal rate (p=0.002) were associated. Risk factors not considered by the Framingham risk equation may account for the lack of fit and should be examined further.     

Validation of the cardiovascular risk model developed for Omanis with type 2 diabetes

Aim

The first cardiovascular risk prediction model in the Arab world was recently developed for Omanis with type 2 diabetes mellitus. This study aims to validate the newly developed model.

Depression as a risk factor for the onset of type 2 diabetes mellitus. A meta-analysis

Aims/hypothesis Evidence strongly suggests that depression and type 2 diabetes are associated, but the direction of the association is still unclear. Depression may occur as a consequence of having diabetes, but may also be a risk factor for the onset of type 2 diabetes. This study examined the latter association by reviewing the literature and conducting a meta-analysis of longitudinal studies on this topic.Methods Medline and PsycInfo were searched for articles published up to January 2005. All studies that examined the relationship between depression and the onset of type 2 diabetes were included. Pooled relative risks were calculated using fixed and random effects models. To explore sources of heterogeneity between studies, subgroup analyses and meta-regression analyses were performed.Results Nine studies met our inclusion criteria for this meta-analysis. The pooled relative risk was 1.26 (1.13–1.39) using the fixed effects model and 1.37 (1.14–1.63) using the random effects model. Heterogeneity between studies could not be explained by (1) whether studies controlled for undetected diabetes at baseline; (2) the method of diabetes assessment at follow-up; (3) the baseline overall risk of diabetes in the study population; and (4) follow-up duration.Conclusions/interpretation Depressed adults have a 37% increased risk of developing type 2 diabetes mellitus. The pathophysiological mechanisms underlying this relationship are still unclear and warrant further research. A randomised controlled study is needed to test whether effective prevention or treatment of depression can reduce the incidence of type 2 diabetes and its health consequences.     

2型糖尿病家系青少年一级亲属心血管危险因素研究

目的探讨2型糖尿病（T2DM）家族史对青少年心血管危险因素的影响。方法秦皇岛地区12～18岁青少年4023人横断面调查。根据父母有无糖尿病分为糖尿病家族史阳性组（FH＋）和阴性组（FH-）。测量腰围（WC）、血压、FPG、血脂,计算BMI。结果（1）FH＋组腰围、FPG、TC和LDL-C均高于FH-组（P〈0.05）,超重/肥胖、高SBP、高FPG检出率高于FH-组（P〈0.05）。（2）校正年龄、性别后FH＋组SBP、FPG升高、超重/肥胖的危险性分别是FH-组的1.54、2.06、1.33倍,95%CI分别是（1.10～2.16）、（1.46～2.89）、（1.12～1.59）,具有2项以上心血管危险因素的危险性是FH-组的1.72倍。结论T2DM患者的青少年一级亲属已存在心血管危险因素增加和聚集。应重视对这一人群进行早期筛查和干预,以减少心血管病的发生。     

Effects of liraglutide on cardiovascular risk factors in patients with type 1 diabetes

We investigated the short‐term effect of adding liraglutide 1.8 mg once daily to insulin treatment on cardiovascular risk factors in patients with type 1 diabetes. In total, 100 overweight (BMI ≥25 kg/m²) adult patients (age ≥18 years) with type 1 diabetes and HbA1c ≥ 8% (64 mmol/mol) were randomized to liraglutide 1.8 mg or placebo added to insulin treatment in a 24‐week double‐blinded, placebo‐controlled trial. At baseline and after 24 weeks of treatment, 24‐hour blood pressure and heart rate, pulse pressure, pulse wave velocity and carotid intima‐media thickness were evaluated. Compared with placebo, liraglutide increased 24‐hour heart rate by 4.6 beats per minute (BPM); P = .0015, daytime heart rate by 3.7; P = .0240 and night‐time heart rate by 7.5 BPM; P < .001 after 24 weeks. Diastolic nocturnal blood pressure increased by 4 mm Hg; P = .0362 in the liraglutide group compared with placebo. In conclusion, in patients with long‐standing type 1 diabetes, liraglutide as add‐on to insulin increased heart rate and did not improve other cardiovascular risk factors after 24 weeks of treatment.     

Plasma N-terminal pro-brain natriuretic peptide as a major risk marker for cardiovascular disease in patients with type 2 diabetes and microalbuminuria

Aims/hypothesis We examined whether plasma N-terminal probrain natriuretic peptide (NT-proBNP) predicts cardiovascular outcome in patients with type 2 diabetes.Methods A total of 160 microalbuminuric type 2 diabetic patients (mean age 55.1 years [SD 7.2], 119 men) were enrolled in the Steno-2 Study examining the effect of multifactorial treatment, and were divided into two groups according to baseline levels of plasma NT-proBNP below or above the median for the cohort, which was followed for an average of 7.8 years. Cardiovascular outcome was a composite of cardiovascular mortality, myocardial infarction, stroke, revascularisation procedures in the heart or legs, and amputations.Results In the whole group, plasma NT-proBNP being above the median was associated with an increased risk of cardiovascular disease during follow-up, with an unadjusted hazard ratio of 4.4 (95% CI 2.3–8.4; p<0.0001). A decrease in plasma NT-proBNP of 10 pg/ml during the first 2 years of intervention was associated with a 1% relative reduction in the primary endpoint (p<0.001). Despite polypharmacological treatment targeting cardiovascular disease, the mean plasma NT-proBNP level increased during follow-up.Conclusions/interpretation We conclude that high plasma NT-proBNP is a major risk marker for cardiovascular disease in patients with type 2 diabetes and microalbuminuria.     

中老年2型糖尿病女性患者大血管病变相关危险因素分析

目的 探讨中老年T2DM女性患者大血管病变的相关危险因素. 方法 将165例T2DM女性患者分为合并大血管病变（A）组和未合并大血管病变（B）组,对两组的临床特征及相关血液检查指标行Logistic回归分析. 结果 Logistic回归分析显示,年龄（OR=1.076,95％CI：1.029～1.124,P=0.001）、SBP（OR=1.026,95％CI：0.999～1.053,P=0.060）和TC（OR=1.516,95％ CI：0.988～2.325,P=0.057）进入回归方程. 结论 年龄、SBP和TC为中老年T2DM女性患者大血管病变的独立危险因素.     

Meta-analysis of type 1 diabetes mellitus and risk of cardiovascular disease

BackgroundIndividuals with diabetes have a high risk of cardiovascular disease (CVD). However, the association between type 1 diabetes mellitus (T1DM) and the risk of CVD has not been well addressed. This meta-analysis aimed to investigate the association between T1DM and CVD.MethodsWe searched the PubMed and EMBASE for studies that examined the association between T1DM and CVD until October 2020. We calculated the pooled risk ratios (RRs) with confidence intervals (CIs) from individual studies based on a random-effects model.ResultsWe included 10 observational studies involving 166,027 patients with T1DM, and individuals were matched controls from the general population. Among T1DM patients, the RR of CVD was 5.09 (95% CI, 3.72–6.96), of coronary heart disease (CHD) was 9.38 (95% CI, 5.56–15.82), and of myocardial infarction was 6.37 (95% CI, 3.81–10.66). The RR of heart failure was 4.29 (95% CI, 3.54–5.19), of atrial fibrillation was 1.36 (95% CI, 1.17–1.59), and of stroke was 4.08 (95% CI, 3.42–4.86). Moreover, there was an increased RR among females for CHD, CVD, myocardial infarction, and stroke associated with T1DM.ConclusionsThis study suggests that T1DM is associated with an increased risk of several types of CVD. However, the possible mechanisms for the increased risk of CVD remain unclear.     

106例血液透析患者心血管疾病的危险因素分析

目的探讨血液透析患者心血管疾病的危险因素。方法常规检测106例维持性血液透析患者的血脂、血清白蛋白(ALB)、尿素清除指数(KT/V)、尿酸、血磷及血压水平,并分析上述因素与血液透析患者心血管疾病之间的关系。结果血液透析患者心血管疾病为25%,其中缺血性心脏病6例,心功能不全5例,心脏增大21例,脑血管意外3例。伴心血管疾病的血液透析患者血清甘油三酯(TG)水平、年龄、透析前血清肌酐、尿酸、白蛋白、伴有高血压和心血管病变家族史的比例显著高于无心血管疾病患者,KT/V、透析时体外循环血量和超滤量显著低于后者。逐步条件logistic回归分析结果显示,年龄、高血压、TG、血磷、ALB是心血管疾病的重要危险因素,回归方程为P/(1-P)=exp(-12.81 0.239年龄 0.288高血压 1.586TG 4.270血磷-0.439ALB)。结论高血压、高龄、血清甘油三酯水平和血磷水平增高、血清白蛋白水平降低是血液透析患者心血管疾病的危险因素,血液透析不充分、透析时的体外血循环量及心血管家族史也与心血管疾病的发生有关。     

Educating patients with diabetes about cardiovascular disease risk

In persons with diabetes mellitus, atherosclerosis is increased, develops prematurely, and is associated with an accelerated progression of atherosclerotic changes. More than 55% of deaths from diabetes are from cardiovascular disease. Central to the optimal management of diabetes and the prevention of chronic complications is effective patient education. The necessity of optimal glycemic control in the prevention of long-term diabetes-related complications, particularly microvascular disease, has been a primary focus of diabetes education during the past decade. It has become clear that to prevent cardiovascular disease in persons with diabetes, an increased emphasis on patient education aimed at reducing cardiovascular disease risk factors is essential. This review explores the scope, impact, and prevention of diabetes-related cardiovascular disease, focusing on integration of cardiovascular disease risk reduction during patient teaching and education programs.     

Correlation of cardiorespiratory fitness with risk factors for cardiovascular disease in children with type 1 diabetes mellitus

The objective of this study was to correlate CRF with cardiovascular risk factors in T1DM children.MethodsFifty children and adolescents aged between 9 and 17 years with no diabetes complications and a mean diabetes duration of 4.6 years were selected. Antropometric, sexual maturation and blood pressure data were evaluated. CRF level was assessed with a 20-m shuttle run test. Laboratory tests were performed to verify fasting lipids and glycated hemoglobin. Statistical analyses were made with Pearson partial correlation, t test, and one-way ANOVA, with p ≤ 0.05.ResultsAfter adjustment for body adiposity and sexual maturity, inverse correlations among CRF and TC, TG, TC/HDL-C, TG/HDL-C, non-HDL-C, and SBP were statistically significant. Variables differing by sex included weight Z score, BMI Z score, skinfold thickness, percentage of body fat, and DBP. Boys had higher CRF compared to girls. CRF and TC differed significantly by sexual maturation status.ConclusionAn inverse and significant relationship between CRF and most lipid profile's components and SBP in poor controlled T1DM children and adolescents was found, independently of body adiposity.