Plasma viscosity, fibrinogen, white cell count, and cardiovascular risk factors.

We present a cohort of 100 subjects [43 men and 57 women; median age 66.00(25)] who were tested using carotid ultrasound to identify subclinical carotid atherosclerosis (SCA). We have evaluated the behaviour of whole blood viscosity (WBV) at high (450 s–1) and low (0.51 s–1) shear rates, plasma viscosity (450–1), hematocrit and mean erythrocyte aggregation. When compared to normal control subjects, using the Mann-Whitney test, we observed in SCA patients a significant increase in WBV only. The results were substantial after having divided the SCA subjects according to the cardiovascular risk factors (CRFs) and the degree of insulin resistance; the research was performed using two surrogate indexes such as TG/HDL-C and TyG. With the division carried out according to CRFs, employing the Kruskal-Wallis test, results show a significant increase in WBV (at high and low shear rates), in plasma viscosity, in erythrocyte aggregation and plasma fibrinogen level. Whereas by dividing them into the median of TG/HDL-C and TyG, we noticed a significant increase in WBV (at high and low shear rates) and in erythrocyte aggregation in the two groups with high TG/HDL-C ratio and with high TyG; having found an increased level of plasma fibrinogen in the latter. The data underlines the role of the main hemorheologic aspects in subclinical carotid atherosclerosis being closely correlated to the CRFs and different degrees of insulin resistance.

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Estimation of risk factors of early postoperative mortality in elderly patients who are subjected to emergency operations of the gastrointestinal tract

Srpski arhiv za celokupno lekarstvo ◽

10.2298/sarh181129089p ◽

2020 ◽

Vol 148 (1-2) ◽

pp. 41-47

Author(s):

Ivan Pesic ◽

Milan Radojkovic ◽

Milica Nestorovic ◽

Vanja Pecic

Keyword(s):

Risk Factors ◽

Mortality Rate ◽

Elderly Patients ◽

Cell Count ◽

Kidney Diseases ◽

White Cell Count ◽

Univariate Analysis ◽

Significant Risk ◽

White Cell ◽

Surgical Interventions

Introduction/Objective. The elderly (age ? 65 years) comprise an increasing proportion of patients undergoing emergency general surgery (EGS) procedures nowadays. The objective of the paper was to determine the intra-hospital mortality rate in elderly patients undergoing emergency gastrointestinal surgical procedures. Methods. 914 elderly patients (> 65 years old) were examined, divided into two groups: emergency and elective surgery patients, treated for diseases (benign and malignant) of the stomach, duodenum, small intestine and colon. The patients were divided into four age groups and five American Society of Anesthesiologists (ASA) groups, taking into account the presence of chronic diseases, the values of some laboratory parameters, administering transfusion, and the occurrence of surgical complications during hospitalization. Results. The mortality rate among elderly patients was 17.8%. The univariate analysis in EGS patients revealed that gastro-duodenal surgical interventions (p < 0.001), ASA ? 3 score (p < 0.001), heart, lung, kidney diseases, and postoperative complications (p < 0.001), as well as the white cell count > 10,000/mm3 (p = 0.043) were independent risk factors for mortality. In the multivariate analysis, in EGS patients, the significant risk factors for mortality were gastric surgical interventions (p = 0.001), ASA score of 4 (p < 0.001), heart and kidney disease (p ? 0.001), and white cell count > 10,000/mm3 (p = 0.039). Conclusion. The characterization of independent validated risk indicators for mortality in those patients is essential and may lead to an efficient specific workup, which constitutes a necessary step towards developing a dedicated score for elderly patients.

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