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The hypothesis of the study is that hematological indices (neutrophil to lymphocyte ratio, platelet to lymphocyte ratio and systemic index of inflammation) may be predictors of infectious complications and multiple organ dysfunction in patients after cardiac surgery.
The hematological index validation study is a single-center interventional prospective study. The aim of the study: to determine the average and threshold values of hematological indices in patients with cardiac surgery before surgery and in the early postoperative period; to determine the levels of hematological indices that indicate an unfavorable course of the postoperative period and may be predictors of infection or multiple organ dysfunction. The study will include 200 patients who are shown cardiac surgery. Blood samples will be collected before the study at three stages: before the operation, on the first day after the operation and on the third day after the operation. Based on the hematological indices studied (NLR, PLR, SII), other biomarkers often used in clinical practice (presepsin, procalcitonin, interleukins, etc.) will also be determined. Each patient will be monitored throughout the perioperative period until the patient is discharged from the hospital by the study participants, in the future all records from the medical history will also be analyzed., including data from instrumental and laboratory studies, consultations of specialists. Based on these data, patients will be divided into groups depending on the presence of complications and their nature. Data concerning demographic indicators, the levels of biomarkers studied and the course of postoperative will be stored in the Exel program. Statistical analysis is planned to be carried out in the IBM SPSS Statistics program. For each quantitative indicator, the nature of the distribution will be determined using the Kolmogorov-Smirnov criterion. All quantitative data with a normal distribution will be presented in the form of mean and standard deviation; with a distribution other than normal - in the form of a median (Q2) and an interquartile span (Q1; Q3). Parametric and nonparametric criteria will be used to assess the differences between the samples, depending on the nature of the distribution. It is planned to complete the correlation analysis performed; assessment of the influence of independent variables on dependent, encoded binary, using logistic regression; construction of ROC curves. It is planned to calculate the odds ratio (OR), 95% confidence interval (CI) and the significance of the influence of p. In all cases, the results of statistical analysis are considered significant at p < 0.05.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Control Group | Experimental | A group of patients whose postoperative period proceeded without complications, in connection with which they were transferred to the specialized department within 1-2 days. |
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| Group of patients with complications | Experimental | Patients who had postoperative complications: pneumonia, wound infection, sepsis, multiple organ dysfunction. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Determination of the level of the studied biomarkers | Diagnostic Test | Determination of the level of hematological indices based on a general blood test; Determination of the levels of the following biomarkers: isolation of neutrophils from the blood using the gradient centrifugation method; assessment using enzyme immunoassay (ELISA) of the content of neutrophil elastase in the supernatant; myeloperoxidase, ELISA; lactoferrin, ELISA; interleukin -1ß,17,10,6, ELISA; presepsin, ELISA; endothelin, ELISA; lipopolysaccharide, LAL test; lipopolysaccharide binding protein, ELISA; NETs release, immunofluorescence method; the number of neutrophils expressing PDL-1, flow cytofluorimetry method; procalcitonin in human plasma and serum, VIDAS B.R.A.H.M.S. PCT; ferritin, reagent for determination (FERRITIN); lactate dehydrogenase, reagent for determination of QSR6128;Endotoxin Activity Assay, chemiluminescent immunodiagnostics. |
| Measure | Description | Time Frame |
|---|---|---|
| Number of patients with onset of complications of any type in the postoperative period | Recording by the attending physician of the occurrence of a complication | Up to 12 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| Changes in the levels of other biomarkers often used in clinical practice | neutrophil elastase; myeloperoxidase; lactoferrin; interleukins -1β,17,10,6; presepsin; endothelin; lipopolysaccharide; lipopolysaccharide binding protein; procalcitonin; lactoferrin; interleukins -1β,17,10,6; presepsin; endothelin; lipopolysaccharide; lipopolysaccharide binding protein; procalcitonin; ferritin ; lactate dehydrogenase, tumor necrosis factor - alpha; Endotoxin Activity Assay |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Maxim A. Babaev, D.M. | Contact | 89160269066 | maxbabaev@mail.ru | |
| Oxana O. Grin | Contact | 89168748565 | grin_oksana@mail.ru |
| Name | Affiliation | Role |
|---|---|---|
| Maxim A. Babaev, D.M. | Petrovsky NRCS | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Petrovsky National Reasearch Centre of Surgery | Recruiting | Moscow | 119991 | Russia |
| Type | Date | Date Unknown |
|---|---|---|
| Release | Jan 22, 2026 | |
| Reset | Feb 9, 2026 |
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| Release Date | Unrelease Date | Unrelease Date Unknown | Reset Date | MCP Release Number |
|---|---|---|---|---|
| Jan 22, 2026 | Feb 9, 2026 |
| ID | Term |
|---|---|
| D018805 | Sepsis |
| D011014 | Pneumonia |
| D014946 | Wound Infection |
| ID | Term |
|---|---|
| D007239 | Infections |
| D018746 | Systemic Inflammatory Response Syndrome |
| D007249 | Inflammation |
| D010335 | Pathologic Processes |
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|
| Up to 1 week |
| Number of patients with nosocomial pneumonia | In accordance with national clinical guidelines, the diagnosis of pneumonia was made with the appearance of fresh focal infiltrative changes in the lungs according to X-ray examination data in combination with two or more clinical and laboratory signs (acute fever 38,0 ° C and higher; cough with sputum; physical signs - focus of crepitation/small bubbly wheezing, bronchial respiration, shortening of percussion sound; leukocytosis > 10 x 109 /l and/or rod shift > 10%). | Up to 12 weeks |
| Number of patients with wound infection | The diagnosis of wound infection is established jointly with surgeons on the basis of examination of the postoperative wound during dressing and bacteriological examination of the discharge from the wound. | Up to 12 weeks |
| Number of patients with multiple organ dysfunction | With the dysfunction of two or more functional systems (cardiovascular, respiratory, renal-hepatic), the syndrome of multiple organ dysfunction was established | Up to 12 weeks |
| Number of patients with sepsis | If there is a focus of infection or suspected infection in combination with multiple organ dysfunction (+ 2 points on the SOFA scale), sepsis is diagnosed. | Up to 12 weeks |
| D013568 |
| Pathological Conditions, Signs and Symptoms |
| D012141 | Respiratory Tract Infections |
| D008171 | Lung Diseases |
| D012140 | Respiratory Tract Diseases |