Risk factors for development of critical limb ischemia -- a survey of diabetic vs. nondiabetic population.

The aim of this study is to identify the risk factors for development of chronic critical limb ischemia (CLI) in diabetic and nondiabetic patients with peripheral arterial disease (PAD). 127 patients (pts) with PAD (63 with type 2 diabetes and 64 nondiabetic) were randomly included in a cross sectional study. Out of them 17 were with CLI. Population was investigated for age, height, weight, sex, duration of PAD and diabetes, arterial hypertension, hyperlipidemia, smoking, obesity, systolic blood pressure, value of ankle-brachial index, previous claudicating distance and peripheral intervention, amputation, medical treatment with prostanoids, insulin and antiplatelet drugs and histories of cerebrovascular disease, coronary artery disease and other concomitant diseases. After adjudging linear correlation between mentioned variables and presence of CLI, logistic regression model was built. There were no significant differences in demographic data between both populations. Hyperlipidemia was more frequent in nondiabetic population. Multiple regression model show ankle-brachial index < 0,5, measured in previous 1-3 years (OR 3.39 CI 95% 0.28-40.78), microvascular complication retinopathy (OR 12.98 CI 95% 1.76-95.58), heart failure (OR 1.91 CI 95% 0.29-2.72) and previous prostanoids treatment (OR 15.92 CI 95% 0.53-476.58) as predictors of development of CLI in diabetic population with PAD. After heart failure exclusion of model of nondiabetic pts, previous surgery (OR 3.14 CI 95% 0.61-16.09) and smoking (OR 0.35 CI 95% 0.78-1.62) were presented as prognostic factors for CLI's onset. Our results indicate differences between predictors of CLI's onset in diabetic and nondiabetic population with PAD. Presence of retinopathy, previous measured ankle-brachial index and prostanoids treatment are predictors of development of CLI in diabetic population. Previous surgery is independent predictor for CLI'onset in nondiabetics. Treating concomitant heart failure for both populations and modifying risk factor smoking in nondiabetic population, have an important clinical usefulness in risk assessment approach of peripheral arterial disease patients.

Predictors of in-hospital morbidity and mortality in patients with coronary artery disease treated with coronary artery bypass surgery.

AIM OF THE STUDY: The aim of our study was to identify markers that can predict early morbidity and mortality in patients with coronary artery disease who underwent coronary artery bypass surgery (CABG) for myocardial revascularization. MATERIAL AND METHODS: 749 patients (pts) were enrolled in the study at mean age 55 +/- 8 years, 639 male and 119 female. We analyzed pre-operative demographic, clinical, left ventricular morphologic and functional and angiographic variables, per-operative characteristics, and we registered occurrence of hospital complications including cardiac death during the first 30 days after the operation. RESULTS: Hospital complications were registered in 173 (23.1%) patients, including cardiac death registered in two (3%) patients during the first 30 days after the operation. The most common complications were: pericardial effusion (8.4%), supraventricular arrhythmias (6.3%) and pleural effusion (5.6%), followed by more serious complications like infections, acute renal failure and stroke. Advanced age (>or=65 years), coexisting morbidities and risk factors: cerebrovascular disease (CVD), peripheral vascular disease (PVD), chronic obstructive pulmonary disease (COPD), hypertension (HTA), previous myocardial infarction (MI), heart failure before the operation, extensive coronary artery disease (CAD) (angiographicly identified), low left ventricular ejection fraction (LVEF), and high WMSS index were identified as predictors of in-hospital morbidity. Advanced age, Mod Gensini score (as marker of angiographic severity of CAD) and WMSS index were found to be independent predictors of in-hospital morbidity, while advanced age, heart failure before CABG and in-hospital complications were found to be independent predictors of in-hospital mortality. CONCLUSION: In patients with coronary artery disease who underwent CABG surgery, preoperative variables and operative technique can predict occurrence of in-hospital morbidity, while early complications can strongly predict in-hospital mortality.