Journal of Diabetes and its Complition

Tip 2 diyabette metabolik kontrol ve bilinen makrovasküler hastalık arasındaki ilişki: Diyabette VA İşbirliği Çalışması
Tip 2 diyabette metabolik kontrol ve bilinen makrovasküler hastalık arasındaki ilişki: Diyabette VA İşbirliği Çalışması
M. Sue Kirkmana,b, *, Madeline McCarrenc, Jayendra Shahd,e, William Duckworthe,f, g, Carlos Abrairah, i The VADT Study Group
aThe Roudebush Veterans Affairs Medical Center, Indianapolis, IN, USA bIndiana University, Indianapolis, IN, USA cCooperative Studies Program Coordinating Center, Hines VA Hospital, Hines, IL, USA dSouthern Arizona VA Healthcare System, Tucson, AZ, USA eThe University of Arizona, Tucson, AZ, USA fCarl T. Hayden VA Medical Center, Phoenix, AZ, USA gThe University of Arizona, Tempe, AZ, USA hMiami VA Medical Center, Miami, FL, USA jThe University of Miami, Miami, FL, USA
Article Language: TR
ÖZET
Sorun: Makrovasküler hastalık (MVH), özellikle koroner kalp hastalığı, tip 2 diyabet önde gelen mortalite nedenidir. Yedi yıl süren randomize bir klinik çalışma olan VA Diyabet Çalışmasının amacı Tip 2 diyabetik olduğu bilinen yaşlı hastalarda yoğun glisemik kontrolün MVH riskine olan etkisinin araştırılmasıdır. Hastalarda, çalışmaya dahil edildikleri sıradaki demografik ve klinik değişkenler (özellikle HbA1c) ile yaygın olarak görülen MVH arasındaki ilişki araştırıldı. Araştırmanın planlanması ve metodlar: Çalışmaya katılan bilinen makrovasküler hastalığı olan ve olmayan tüm hastaların demografik, tedavileri ve klinik özellikleri karşılaştırıldı, ardından çoklu değişkenlerin HbA1c ile nasıl bir etkileşim içinde oldukları incelendi. Olası etkileyici (karışıklık yaratıcı) değişkenlere göre düzenleme yapıldıktan sonra, HbA1c çeyrek dilimleri ile MVH prevalansı arasındaki ilişkiyi değerlendirmede lojistik regresyon modellerinden yararlanıldı. Bulgular: Pek çok değişkenin önceden mevcut MVH ile ilişkili olduğu gözlendi (yaş, diyabet süresi, günlük doz hariç insülin kullanımı, sigara öyküsü, hipertansiyon, vücut kütle indeksi, beyaz ırk, İspanyol kökenli olmayan bir etnik gruba mensup olmak, düşük HDL kolesterol, düşük LDL kolesterol ve yüksek trigliserid düzeyleri ve statin kullanımı). Tek değişkenli analizde, HbA1c ile MVH arasında ilişki bulunamadı (MVH olanlarda %9.4 ± 1.46, olmayanlarda %9.5 ± 1.58). Çok değişkenli analizlerde karışık-lık oluşturarak HbA1c ile MVH arasında ilişkiyi etkileyebilecek faktörler azdı. Ancak, yaş faktörüne göre bir düzenleme yapıldığında HbA1c değerlerinin yalnızca en üst çeyrek dilimde odds oranında hafif bir artış gözlendi. Sonuçlar: Bu kesitsel analizde, makrovasküler hastalığın bazı klinik ve demografik faktörlerle ilişkili olduğu, ancak bu faktörler arasında HbA1c'nin bulunmadığı gözlendi. Tip 2 diyabet tanısı alan yaşlı hastalarda, HbA1c düzeyinin yoğun bir şekilde düşürülmesinin, gelecekteki MVH oranını azaltıp azaltmayacağının belirlenmesi, bu klinik çalışmanın birincil hedefidir.

Anahtar Kelimeler: Makrovasküler hastalık; Glisemik kontrol
ABSTRACT
The problem: Macrovascular disease (MVD), especially coronary heart disease, is the most common cause of mortality in Type 2 diabetes. We assessed the association between demographic and clinical variables (particularly HbA1c) and prevalent MVD at time of enrollment into the VA Diabetes Trial (VADT), a 7-year randomized trial to determine whether intensive glycemic control will reduce risk of MVD events in older participants with established Type 2 diabetes. Research design and methods: We compared the demographic, treatment, and clinical characteristics of participants with and without known MVD, then assessed the interaction of multiple variables with HbA1c. Logistic regression models evaluated the association between HbA1c quartiles and prevalence of MVD, adjusting for potentially confounding variables. Results: Several variables were associated with prevalent MVD (age, duration of diabetes, insulin use but not daily dosage, smoking history, hypertension, BMI, Caucasian race, non-Hispanic ethnicity, lower HDL cholesterol, higher triglycerides, lower LDL cholesterol, and statin use). In univariate analysis, there was no association of HbA1c with MVD (mean: 9.4F1.46% in those with MVD, 9.5F1.58% in those without). Multivariate analyses found little confounding of the lack of association of HbA1c with MVD. Only adjustment for age produced a slight increase in the odds ratio, but only for the highest quartile of HbA1c. Conclusions: In this crosssectional analysis, MVD was associated with a number of clinical and demographic variables but not with HbA1c. Determining whether intensive lowering of HbA1c will reduce the prospective rate of MVD events in this population of older participants with established Type 2 diabetes is the primary objective of our trial.

Keywords: Macrovascular disease; Glycemic control

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