Platelet Distribution Width Levels Research Articles

Metabolic consequences on platelet parameters: Mean platelet volume and platelet distribution width in type 2 diabetes mellitus

Background: Diabetes mellitus encompasses metabolic disorders marked by chronic hyperglycemia, leading to various complications. It is considered a prothrombotic state associated with increased platelet reactivity. Parameters such as mean platelet volume (MPV) and platelet distribution width (PDW), which are indicative of platelet size, enzymatic activity, and prothrombotic risk, can be readily assessed during routine hematological analysis, facilitating early detection of this prothrombotic state. Aims and Objectives: The study aimed to investigate the varied alterations in platelet parameters in type 2 diabetes mellitus (T2DM) patients and tried to elucidate these parameters’ predictive role in diabetes complications. Materials and Methods: This prospective cross-sectional study was conducted between February 2022 and February 2024, involving 100 patients with T2DM and 100 healthy non-diabetic individuals. MPV, PDW, fasting blood glucose (FBS), and glycated hemoglobin (HbA1c) levels were measured and analyzed. Statistical analysis was carried out using the Student’s t-test, Mann–Whitney U-test, Chi-square test, and Spearman’s correlation tests in the Statistical Package for the Social Sciences software (version 21.0). Results: Most of the patients were in the age group of 40–70 years with male predominance. In comparing the 100 diabetics and 100 non-diabetics groups, MPV and PDW levels were notably higher in diabetics (11.46±1.75 vs. 9.40±1.02 fl, 21±2.57 vs. 16.72±1.48%) with statistical significance (P<0.01). Similarly, FBS and HbA1C levels were elevated among diabetics (179.38±70.25 vs. 90.64±5.93, 7.83±2.24 vs. 5.02±0.64) along with a positive correlation between platelet indices (MPV and PDW) and FBS, HbA1c levels in patients with T2DM. In addition, diabetic patients with complications exhibit significantly higher MPV, PDW, FBS, and HbA1c levels compared to those without complications. Conclusion: MPV and PDW levels show significant alterations in T2DM patients, with consistently elevated values, especially in those with complications. This underscores their potential importance as key indicators alongside glycemic indices such as FBS and HbA1c, in monitoring diabetes progression and anticipating associated complications.

Comparison of the Volumetric Parameters of Platelets in Diabetic Children with and without Diabetic Ketoacidosis: A Case-Control Study in the North of Iran

Background: This study aimed to determine the volumetric parameters of platelets including MPV (Mean Platelet Volume) and PDW (Platelet Distribution Width) in diabetic children with and without diabetic ketoacidosis (DKA) and to evaluate their relationship with the severity of DKA. Materials and Methods: A case-control study was conducted on 112 children with type 1 diabetes mellitus (T1DM), with and without DKA, who referred to Amirkola Children's Hospital, Iran, in 2016-2021. Of them, 43 were boys, and 69 were girls. The diagnosis of diabetes was based on clinical symptoms and diagnostic criteria, and DKA was diagnosed through the analysis of arterial blood gas. The patients’ MPV and PDW were also evaluated, and the P values less than 0.05 were considered significant. Results: Out of 112 children with diabetes (with the mean age of 8.71 ± 3.22 years), 56 persons had DKA. In terms of DKA severity, 17 patients (30.4%) had mild, 29 (51.8%) had moderate, and 10 (17.8%) had severe DKA. The children with DKA had the mean blood glucose of 490.98±46.11mg/dL, MPV of 10.02± 1.19fl), and PDW of 13.07± 1.18flwere significantly higher (P<0.001). It was found that, an increase in the severity of DKA would raise the mean MPV (P = 0.006) and PDW(P<0.001) significantly. Conclusion: Based on the results of this study, as the severity of DKA increases in diabetic children, the mean levels of MPV and PDW increase significantly. Therefore, it is suggested that MPV and PDW be used to predict the severity of DKA in diabetic children.

Platelet indices as predictors of poor glucoregulation in type 2 diabetes mellitus adults at Bishoftu General Hospital, Ethiopia.

Diabetes is a chronic metabolic syndrome that has become a global public health problem with significant morbidity and mortality. It is a pro-inflammatory and pro-thrombotic condition characterized by increased platelet activation and alterations in platelet indices. However, the use of platelet indices as predictors of poor glucoregulation has not been fully evaluated in this context, and evidence for their role as predictors of poor glycemic status in diabetic patients is limited. To evaluate platelet indices and determine their prognostic significance in relation to inadequate glucoregulation among individuals diagnosed with type 2 diabetes at Bishoftu General Hospital in Ethiopia, from June 15 to August 12, 2022. A comparative cross-sectional study was conducted in 261 participants including 174 individuals with type 2 diabetes mellitus (T2DM) and 87 non-diabetic controls. The systematic random sampling technique was used to select par-ticipants. Data were collected using structured questionnaires, physical measurements, checklists, and laboratory tests. Platelet parameters and fasting blood glucose levels were determined from blood samples using Sysmex-XN550 and CobasC311 analyzers, respectively. The hematology analyzer output was checked and participants were also screened for malaria parasites using a prepared blood smear. Collected data were entered into Epi-data version 3.1 and exported to SPSS version 25 for analysis. The χ 2 test, Mann-Whitney U test, Kruskal-Wallis test, post hoc test, Spearman correlation, and receiver operating characteristic curve were used for analysis. A P value < 0.05 was considered statistically significant. The results of our study indicate that diabetic patients have significantly higher levels of platelet distribution width (PDW), mean platelet volume (MPV), platelet large cell ratio (PLCR), and plateletcrit (PCT) compared to healthy individuals (P < 0.001). Furthermore, these indices were found to be significantly elevated in individuals with poor glycemic control in T2DM compared to those with good glycemic control and healthy controls. We also observed significant correlations between these indices and various anthropometric and clinical variables. Our findings suggest that PDW, with a cut-off value of 15.75 fL and an area under the curve (AUC) of 0.803, MPV, with a cut-off value of 12.25 fL and an AUC of 0.774, PLCR, with a cut-off value of 36.3% and an AUC of 0.775, and PCT, with a cut-off value of 0.24% and an AUC of 0.761, can serve as predictors of poor glycemic control in patients with diabetes mellitus. The observed correlation between diabetic patients and a significant increase in platelet indices has highlighted their potential as predictors of poor glycemic control in diabetes. Therefore, regular screening and profiling of platelet indices is recommended as part of the follow-up process for individuals with diabetes mellitus.

The Role of Platelet Distribution Width in the Association Between Blood Glucose and Neurological Impairment Severity in Acute Ischemic Stroke: A Moderated Mediation Model.

Fasting blood glucose (FBG) is a recognized risk factor for Ischemic Stroke, but little research has examined the interaction among FBG, Platelet Distribution Width (PDW) and the severity of neuronal damage. Thus, the present study constructs a moderated mediation model aimed to elucidate the relationships among FBG, PDW, and NIHSS scores in patients with acute ischemic stroke (AIS). We conducted a cross-sectional study on 431 AIS patients. Upon hospital admission, we assessed the patients' NIHSS scores and collected blood samples to measure FBG and PDW levels. The relationship between FBG and NIHSS scores moderated by PDW was analyzed by linear curve fitting analysis, multiple linear regression analysis, and moderated mediation analysis respectively. In the tertile grouping based on FBG, both PDW and NIHSS scores of AIS patients demonstrated an increase corresponding with rising levels of FBG (p<0.001 for both). Multiple linear regression analysis revealed that, the β coefficients (95% CI) for the relationship between FBG and NIHSS scores were 1.49 (1.27-1.71, p<0.01) post-adjustment for potential confounders. The β coefficients (95% CI) for the relationship between FBG and PDW were 0.02 (0.01-0.04, p<0.01) post-adjustment. Likewise, for the relationship between PDW and NIHSS scores, the β coefficients (95% CI) were 4.33 (3.07-5.59, p<0.01) after adjustment. These positive association remained consistent in sensitivity analysis and hierarchical analysis. Smoothed plots suggested that there are linear relationships between FBG and PDW and NIHSS scores respectively. Further mediation analysis indicated that increased PDW significantly (p<0.01) mediated 5.91% of FBG-associated increased NIHSS scores. This study suggested that FBG levels were associated with NIHSS scores, and the FBG-associated neurological impairment may be partially mediated by PDW. These findings underscore the importance of monitoring FBG and PDW levels in AIS patients, potentially guiding risk intervention strategies.

Preoperative platelet distribution width predicts bone metastasis in patients with breast cancer

PurposeBone metastases occur in 50-70% of patients with breast cancer (BC) and result in high mortality. Platelet distribution width (PDW), a commonly used parameter of activated platelets, has been associated with a poor prognosis in BC. We aim to investigate the prognostic role of PDW for bone metastasis in BC patients.Methods515 patients who received BC surgery in the Harbin Medical University Cancer Hospital from July 1, 2016, to December 31, 2017, were reviewed. Patients’ characteristics and platelet indices upon enrollment in this study were collected. The Kaplan-Meier method was used to estimate the 5-year bone metastasis incidence. The univariate and multivariate Cox regression analyses were utilized to identify risk factors associated with bone metastasis.ResultsThe patients with bone metastases exhibited lower PDW levels than the patients without bone metastases. Moreover, decreased PDW was significantly correlated with histologic type, multifocal disease, and lymph node status. In addition, the patients with reduced PDW levels were more likely to develop bone metastasis. Multivariate analysis showed that PDW was an independent predictor for bone metastasis.ConclusionPDW is an independent predictor of bone metastasis in BC. Further research is warranted.

A Real-World Study on the Short-Term Efficacy of Amlodipine in Treating Hypertension Among Inpatients.

Hospitalized hypertensive patients rely on blood pressure medication, yet there is limited research on the sole use of amlodipine, despite its proven efficacy in protecting target organs and reducing mortality. This study aims to identify key indicators influencing the efficacy of amlodipine, thereby enhancing treatment outcomes. In this multicenter retrospective study, 870 hospitalized patients with primary hypertension exclusively received amlodipine for the first 5 days after admission, and their medical records contained comprehensive blood pressure records. They were categorized into success (n=479) and failure (n=391) groups based on average blood pressure control efficacy. Predictive models were constructed using six machine learning algorithms. Evaluation metrics encompassed the area under the curve (AUC), accuracy, sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV). SHapley Additive exPlanations (SHAP) analysis assessed feature contributions to efficacy. All six machine learning models demonstrated superior predictive performance. Following variable reduction, the model predicting amlodipine efficacy was reconstructed using these algorithms, with the light gradient boosting machine (LightGBM) model achieving the highest overall performance (AUC = 0.803). Notably, amlodipine showed enhanced efficacy in patients with low platelet distribution width (PDW) values, as well as high hematocrit (HCT) and thrombin time (TT) values. This study utilized machine learning to predict amlodipine's effectiveness in hypertension treatment, pinpointing key factors: HCT, PDW, and TT levels. Lower PDW, along with higher HCT and TT, correlated with enhanced treatment outcomes. This facilitates personalized treatment, particularly for hospitalized hypertensive patients undergoing amlodipine monotherapy.

Significance of Inflammatory Markers in Primary Fibromyalgia Syndrome and Their Relation in Assessing the Disease Severity

Abstract Background Fibromyalgia syndrome (FMS) is a musculoskeletal disorder characterized by diffuse chronic musculoskeletal pain associated with various other symptoms. Although the etiology and pathogenesis of FMS are still unclear, it was reported to have possible inflammatory basis. No laboratory marker is currently available to diagnose the disease. Aim of the Work to assess the serum levels of ESR, CRP, NLR, MPV and PDW in primary Fibromyalgia syndrome patients and their relation with the disease severity and depression scores. Patients and Methods The study included 30 FMS patients, diagnosed according to the 2010 ACR (American Colleague of Rheumatology) criteria who presented to Ain Shams University Physical Medicine and Rehabilitation clinic as well as 30 healthy volunteers who served as a control group. The following laboratory tests were assessed among both groups: Erythrocyte Sedimentation Rate (ESR), C-reactive protein (CRP), Neutrophil Lymphocyte Ratio (NLR), Mean Platelet Volume (MPV) and Platelet Distribution Width (PDW). FMS patients filled out The Revised Fibromyalgia Impact Questionnaire (FIQR) and Montgomery Asberg Deprssion Score (MADRS) as well. Results MPV, NLR, ESR and CRP values were significantly higher among the patients’ group (p &amp;lt; 0.05). Statistically positive correlation was found between FIQR and each of CRP (p = 0.021) and ESR (p = 0.027) levels. Another statistically significant positive correlation was found between MADRS and CRP (p = 0.01). The NLR showed marginal positive significance with FIQR. Conclusion In the light of these previous results, we can state that the serum levels of the tested inflammatory markers being mainly the acute phase reactants, have a positive relation with disease severity and depression scores, which in turn affect the quality of daily living. Accordingly, we arise the possibility of using those markers as good indicators of ongoing inflammatory process among FMS patients reflecting the severity of the disease.

The Potential Value of Mean Platelet Volume and Platelet Distribution Width as Inflammatory Indicators in Surgical Necrotizing Enterocolitis.

This study aims to investigate the potential significance of mean platelet volume (MPV) and platelet distribution width (PDW) in predicting surgical neonatal necrotizing enterocolitis (NEC) and establish the correlation between MPV/PDW levels and the severity/prognosis of NEC. A retrospective study was conducted on a cohort of 372 patients diagnosed with NEC. The patients were categorized into two groups based on whether they underwent surgical therapy. Univariate /multivariate analysis were employed to compare the MPV and PDW between the two groups. Moreover, patients in surgical group were categorized into multiple subgroups based on intraoperative findings and postoperative prognosis, and the levels of MPV and PDW were compared among these subgroups. Of the 372 patients, the operative group exhibited significantly higher levels of MPV and PDW than the nonoperative group (P < 0.05). Logistic regression analysis revealed that MPV (OR = 4.895, P < 0.001) and PDW (OR = 1.476, P < 0.001) independently associated with surgical NEC. The analysis of the receiver operating characteristic (ROC) curve revealed that the area under the curve (AUC) was 0.706 for MPV alone, with a cut-off value of 11.8 fL. Similarly, the AUC was 0.728 for PDW alone, with a cut-off value of 16%. However, when MPV and PDW were combined, the AUC increased to 0.906 for predicting surgical NEC. In accordance with the intraoperative findings, the levels of MPV and PDW were found to be higher in the large area necrosis group than in the partial or mild necrosis group (P < 0.01). Furthermore, the MPV and PDW values in the death group were significantly greater than those in the survival group (P =0.040, P =0.008). MPV and PDW may serve as potentially valuable indicators for determining the need for surgical intervention and predicting the prognosis of patients with NEC.

Peripheral blood indicators and COVID-19: an observational and bidirectional Mendelian randomization study

Blood is critical for health, supporting key functions like immunity and oxygen transport. While studies have found links between common blood clinical indicators and COVID-19, they cannot provide causal inference due to residual confounding and reverse causality. To identify indicators affecting COVID-19, we analyzed clinical data (n = 2,293, aged 18–65 years) from Guangzhou Medical University’s first affiliated hospital (2022-present), identifying 34 significant indicators differentiating COVID-19 patients from healthy controls. Utilizing bidirectional Mendelian randomization analyses, integrating data from over 2.46 million participants from various large-scale studies, we established causal links for six blood indicators with COVID-19 risk, five of which is consistent with our observational findings. Specifically, elevated Troponin I and Platelet Distribution Width levels are linked with increased COVID-19 susceptibility, whereas higher Hematocrit, Hemoglobin, and Neutrophil counts confer a protective effect. Reverse MR analysis confirmed four blood biomarkers influenced by COVID-19, aligning with our observational data for three of them. Notably, COVID-19 exhibited a positive causal relationship with Troponin I (Tnl) and Serum Amyloid Protein A, while a negative association was observed with Plateletcrit. These findings may help identify high-risk individuals and provide further direction on the management of COVID‐19.

Platelet distribution width as an useful indicator of influenza severity in children

PurposeThe present study aims to investigate the potential of platelet distribution width as an useful parameter to assess the severity of influenza in children.MethodsBaseline characteristics and laboratory results were collected and analyzed. Receiver operating characteristic (ROC) curve analysis was used to joint detection of inflammatory markers for influenza positive children, and the scatter-dot plots were used to compare the differences between severe and non-severe group.ResultsInfluenza B positive children had more bronchitis and pneumonia (P < 0.05), influenza A infected children had more other serious symptoms (P = 0.007). Neutrophil count, lymphocyte count, neutrophil-to-lymphocyte ratio (NLR), and platelet parameters performed differently among < 4 years and ≥ 4 years children with influenza. Combined detection of platelet parameters and other indicators could better separate healthy children from influenza infected children than single indicator detection. The levels of platelet distribution width of children with severe influenza (A and B) infection was significantly dropped, compared with non-severe group (P < 0.05).ConclusionsPlatelet distribution width could be a very useful and economic indicator in distinction and severity assessment for children with influenza.

Clinical significance of platelet membrane glycoproteins in children with primary immune thrombocytopenia

Abstract Objectives To measure CD62p and CD42b levels and to study its correlations with bleeding score, and different prognostic factors in children with primary immune thrombocytopenia (ITP) patients. Methods In all, 60 children with ITP and 30 age- and sex-matched healthy participants were recruited and underwent thorough clinical assessments including bleeding score using the modified Buchanan and Adix bleeding score as well as complete blood count with measurement of mean platelet volume (MPV), platelet distribution width (PDW) and plateletcrit (PCT), coagulation profiles and measurement of platelet glycoproteins (CD62p and CD42b) using a flow cytometer. Results Children with ITP had lower PCT (P&lt;0.001), CD 62 P, and co-expression of CD 42b/CD 62 P and higher MPV (P=0.009), PDW (P&lt;0.001), and CD 42b level. MPV correlates negatively with lymphocyte count and platelet count, while PDW correlates negatively with neutrophil count and positively with hemoglobin. PCT correlates negatively with total leucocyte count, neutrophil count, and positively with platelet count (P=&lt;0.001). Children with chronic ITP usually presented with mild cutaneous bleeding, while those with acute ITP usually suffered from severe mucosal and life-threatening bleeding (P=0.001). Acute ITP cases had the highest total leucocyte count (P&lt;0.001) and the lowest count of platelet (P&lt;0.001); persistent cases had the lowest lymphocyte count (P=0.023) and co-expression of CD42b/CD62p (P=0.039), while chronic cases had the lowest neutrophil count P&lt;0.001) and highest percentage of PCT (P&lt;0.001) and co-expression of CD42b/CD62p (P=0.039). Conclusion Platelet parameters and platelet glycoprotein CD62P and CD42b expression is a simple noninvasive diagnostic tool in ITP children.

Predictive Effects of Platelet Indices in Cirrhotic Patients with or without Portal Vein Thrombosis

Objective: Portal vein thrombosis (PVT) is a common finding in liver cirrhosis. Besides low portal blood flow, thrombophilia, bacterial translocation and endotoxemia, platelets which are considered as important source of prothrombotic agents may play a role in thrombotic events in cirrhosis. Large platelets have been reported to have numerous granules that result in greater thrombotic and proinflammatory activity. We aimed to define the role of platelet indices in PVT among cirrhotic patients. Method: Cirrhotic patients admitted to Gastroenterology Clinic and having a dynamic radiological examination were assessed retrospectively. Demographic and laboratory findings were recorded including platelet distribution width (PDW) and mean platelet volume (MPV). Severity of cirrhosis was assessed with MELD (Model for End Stage Liver Disease) and Child-Pugh-Turcotte (CPT) scores Results: Study included 255 patients. Mean age was 60.6±10.2 years. 41.6% of patients were female. 50 (19.6%) patients had PVT. Patients with PVT did not differed from those without PVT in age, gender and presence of diabetes mellitus. Median platelet count was lower in patients with PVT (100 (22-370) vs 79,5 (22-573), p: 0,033). Mean MPV and PDW levels were similar between PVT and non-PVT groups (p &gt;0.05). Although median MELD scores did not differ between groups, median CPT scores were significantly higher in PVT compared to non-PVT group (p:0,027). Conclusion: Cirrhotic patients with PVT had more prominent thrombocytopenia, but similar MPV and PDW levels compared to those without PVT.

Prognostic potential of inflammatory markers, oxidative status, thrombocyte indices, and renal biochemical markers in neonatal calf diarrhoea-induced systemic inflammatory response syndrome

The study aimed to assess the prognostic value of inflammatory markers, indicators of oxidative stress, thrombocyte indices, and renal biochemical markers in neonatal calf diarrhoea (NCD) induced by systemic inflammatory response syndrome (SIRS) upon admission. A prospective, observational, and case-control study was conducted on 56 calves diagnosed with NCD. Mean concentrations of interleukin-6 (IL-6), malondialdehyde (MDA), glutathione (GSH), mean platelet volume (MPV), platelet distribution width (PDW), blood urea nitrogen (BUN), and creatinine (Crea) were measured. Furthermore, the neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) were also calculated for SIRS survivors [SIRS (survivor)] and non-survivors [SIRS (non-survivor)] induced by NCD. A prognostic cut-off value for predicting the prognosis of the SIRS’s induced by NCD was obtained via receiver operating characteristic (ROC) curve analysis. Upon admission, the SIRS (non-survivor) calves had significantly higher (P < .001) average levels of IL-6, MDA, BUN, Crea, MPV, and PDW compared to the SIRS (survivor) calves and significantly lower (P < .001) average levels of GSH. Despite an apparent increase in the NLR and PLR values of calves diagnosed with SIRS, no significant difference was found between the survival and non-survivor SIRS cases. Positive predictive values (PPVs) for survival were determined as 100 %, 100 %, 80 %, 100 %, 80 %, and 80 %, respectively, using cut-off values of IL-6 (≤259.67 ng/L), MDA (≤2.87 nmol/mL), MPV (≤12.5 fL), PDW (≤34.25 %), BUN (≤168.3 mg/dL), and Crea (≤2.11 mg/dL). The determined threshold values are those obtained upon admission to the hospital. Based on the sensitivity, specificity, and PPVs derived from the ROC analysis, it has been concluded that IL-6, MDA, MPV, PDW, BUN, and Crea are the most relevant biomarkers used for predicting the prognosis of NCD-induced SIRS in calves. Furthermore, it is also noteworthy that IL-6 exhibited the highest effectiveness among all biomarkers.

Association between ambient air pollution exposure in pregnant women with antiphospholipid syndrome in Nanjing, China

Antenatal exposure to air pollutants is thought to be associated with a variety of maternal blood markers as well as adverse birth outcomes. However, the dysgenic influence of air pollutants on the antiphospholipid syndrome (APS) in mothers and their pregnancy outcomes remains unclear. In the current study, 371 mother-infant pairs (189 healthy: 182 APS) from Nanjing Maternal and Child Health Hospital as well as air pollutants concentration from their living environment were used to investigate correlations between air pollution with maternal blood indicators and fetal birth weight in the groups of APS and healthy mothers. Generalized linear model was used to evaluate the contributions of air pollutant exposure during pregnancy to the blood indicators variation. The relationships between birth weight with specific air pollutant and blood index were analyzed using ridge regression. Results showed that APS fetal birth weight was significantly impacted by air pollutant exposure during pregnancy, in particular, the birth weight decreased significantly along with increasing fine particulate matter 2.5 (PM2.5) and fine particulate matter 10 (PM10) exposure concentrations throughout pregnancy. In contrast, birth weight increased significantly with sulfur dioxide (SO2) exposure. In addition, APS-related blood indicators comprised of platelet distribution width (PDW), total bilirubin (TBIL), mean platelet volume (MPV), platelet-larger cell ratio (P_LCR), homocysteine (HCY), alkaline phosphatase (ALP), direct bilirubin (DBIL), basophilic granulocyte (BAS), platelet thrombocytocrit (PCT), preprandial glucose levels (OGTT0), monocytes (MON), and monocytes ratio (MON_ratio) were also strongly related with prenatal exposure to PM2.5 and PM10, in which PDW levels showed most strongly negative impaction on fetal birth weight. Together, we showed that prenatal exposure to air pollutant (PM2.5 and PM10) may exacerbate the poor birth outcomes of low birth weight by impacting APS maternal blood indicators especially for PDW.

Evaluation of Platelet Distribution Width as an Early Predictor of Acute Kidney Injury in Extensive Burn Patients.

The extensive burns devastate trauma. The research was designed to analyse the predictive value of early platelet (PLT) indices on the development of acute kidney injury (AKI) after severe burns. 186 patients with extensive burns (burn area ≥30%) were eventually involved. Multivariate analyses pointed out that platelet distribution width (PDW) in the first 24 h after admission was an independent risk factor for AKI, severe AKI, and RRT requirement in patients with severe burns, and AKI risk showed an increase of 30.9% per increase of 1% in PDW (OR = 1.309, CI, 1.075-1.594, and P = 0.007). It was found that the area under the ROC curve (AUC) of PDW predicting AKI was 0.735 and that the AUC value was 0.81 for AKI after combining PDW and blood urea nitrogen (BUN). Based on the cut-off value PDW = 17.7%, patients were divided into high- (PDW ≥17.7%) and low-risk (PDW <17.7%) groups. In the KM analysis, there was a higher cumulative incidence of AKI if patients were in a high-risk group (in 30 days); and the stages of AKI showed a linear upward trend (chi-square test for linear trend P < 0.001) as there was an increase in the risk level. The PDW level in the early stage serves as an important risk factor for AKI, severe AKI, and RRT requirement in extensive burns. When PDW >17.7%, burn patients are not only at a higher risk for AKI but may also have higher AKI severity. Due to low cost and wide availability, PDW has the potential to be the tool that can predict AKI in extensive burn patients.

ДЕТЕРМИНАНТЫ ВЫСОКОЙ И НИЗКОЙ ОСТАТОЧНОЙ РЕАКТИВНОСТИ ТРОМБОЦИТОВ ПРИ ПРИЕМЕ КЛОПИДОГРЕЛА В 1-2 СУТКИ ИНФАРКТА МИОКАРДА

The aim of the study was to determine the clinical and laboratory factors that determine high and low platelet reactivity in patients taking clopidogrel on day 1-2 of myocardial infarction (MI). Material and Methods. A total of 405 patients (322 men and 83 women) with MI aged 31 to 74 years were examined. Group 1 included patients with low residual platelet reactivity (LRPR) – 89 people, group 2 consisted of patients with optimal platelet reactivity (OPR) – 223 people, group 3 was composed of patients with high residual platelet reactivity (HRPR) – 93 people. Platelet aggregation was assessed on a Multiplate impedance aggregometer (Germany) with several aggregation inducers. A blood test and a study of morphometric parameters of platelets were performed by the cytoflow method on an automated hematology analyzer Sysmex XS-500i (Japan). The study of the level of soluble CD40 ligand (sСD40L) and sP-selectin was performed in 140 patients, von Willebrand factor (VWF) and endothelin-1 were assessed in 150 people on the enzyme immunoassay analyzer Sunrise (TECAN, Austria) using Fine Biotech kits (China). All studies were performed upon admission to the hospital on day 1-2 of MI (at least 12 hours after the administration of a loading dose of clopidogrel). Results. A one-way linear regression analysis identified the following factors that independently affect the value of the ADP-test: age (β=-0.21, 95% CI: -0.42 – -0.0095; p=0.04); total cholesterol (β=1.4, 95% CI: 0.26–2.56; p=0.04); white blood cell count (β= 0.57, 95% CI: 0.003–1.14; p=0.049); hemoglobin (β=-0.16, 95% CI: -0.27 – -0.044; p=0.0067); platelet count (β=1.4, 95% CI: 0.26 – 2.56; p=0.04); PCT (β=76.8, 95% CI: 41.5 – 112.1; p=0.000024); TRAP-test (β=0.4, 95% CI: 0.33–0.46; p&lt;0.000001); CD40L (β=0.044, 95% CI: 0.013–0.074; p=0.005); sP-selectin (β=2.3, 95% CI: 0.63 – 3.97; p=0.007); VWF (β=0.06, 95% CI: 0.016 – 0.11; p=0.0085). To determine the probability of HRPR developing a binary logistic regression model was constructed based on the observational data of a sample of 398 patients, which included the following indicators: age, white blood cell count, mean platelet volume (MPV) and platelet distribution width (PDW) values, results of TRAP-test and the level of creatinine. At the probability cut-off p=0.4746, the sensitivity of the constructed model was 74.2%, specificity - 74.1%, classification accuracy – 74.1%, the area under the ROC-curve – 0.795 (CI: 0.745 – 0.844). To determine the probability of developing LRPR, a binary logistic regression model was constructed based on the observational data of 143 patients, which included the following indicators: the number of leukocytes, MPV and TRAP-test values, fibrinogen and VWF levels. With a probability cut-off p=0.5589, the sensitivity of this model was 84.6%, specificity – 77.8%, classification accuracy – 79.0%, the area under the ROC-curve – 0.826 (CI: 0.747 – 0.905). Conclusion. On days 1-2 of MI, 22% of patients with an excessive response to clopidogrel and 23% with an insufficient response to clopidogrel were identified. The determinants of HRPR are age, white blood cell count, MPV, PDW, TRAP-test and creatinine levels. The determinants of LRPR are white blood cell count, MPV values, spontaneous platelet aggregation, detected by the TRAP-test, the level of fibrinogen and VWF.

Akromegali Hastalarında Hematolojik İndekslerin Değerlendirilmesi

Objective: Acromegaly is a chronic systemic disease characterized by autonomous and excessive secretion of growth hormone (GH). Acromegaly is most commonly caused by ais a somatotroph adenoma of the anterior pituitary. In acromegaly, mortality primarily results from are cerebrovascular, cardiovascular, respiratory diseases and malignancies. Monocyte/lymphocyte ratio (MLR), neutrophil/lymphocyte ratio (NLR), red cell distribution width (RDW), platelet distribution width (PDW) and delta neutrophil index (DNI) are popular inflammatory markers. This study’s purpose was to assess pre/post-treatment levels of NLR, GH, RDW, MLR, PDW and DNI in acromegalic patients and to investigate the impact of acromegaly treatment on these markers. Materials and Methods: Twenty-six patients with acromegaly, treated and followed at our endocrinology outpatient clinic between April 2014 and February 2022 were included in the study. Age, sex, comorbidities, medications, complete blood count, kidney and liver function tests, pathology reports, tumor size, pre/post-treatment levels of IGF-1, GH, DNI, NLR, MLR, RDW and PDW were retrieved from patients’ files and outcomes were evaluated. Results: Among 26 patients included in the study, 12 (46%) were female and 14 (53%) were male. The average age of the patients was 53.73±16.21 years (range, 25-79). There were 11 (42%) patients with type 2 diabetes mellitus and 9 (34%) patients with hypertension. A statistically significant reduction was observed in post-operative GH, IGF-1, NLR, DNI, PDW and RDW values compared to preoperative values (during active disease phase) and at 6 months in patients with postoperative cure, and compared to pretreatment values in patients without postoperative remission who received medical treatment. A reduction was also observed in post-treatment MLR compared to pretreatment ratio but the difference was non-significant. There was no statistically significant correlation between the IGF-1 levels at the time of diagnosis and NLR, RDW, PDW in patients with acromegaly. Conclusion: Studies on the values of circulating inflammatory biomarkers in patients with acromegaly and their relationship to treatment remain unclear. In our study, higher pre-treatment GH, IGF-1, NLR, DNI, PDW, RDW values were found compared to post- treatment. This suggests that having chronically higher than normal values of IGF-1 may also lead to increased inflammatory markers such as NLR and increased atherosclerotic risk. Chronic subclinical inflammation caused by uncontrolled disease might lead to an increase in mortality and morbidity in acromegalic patients. Therefore, early diagnosis and treatment of acromegaly are crucial.

The diagnostic role of preoperative blood tests in complicated appendicitis: A feasible approach to surgical decision.

An accurate diagnosis and timely surgical intervention have significant importance in noncomplicated appendicitis (NCA) and complicated appendicitis (CA). Therefore, any factor that helps in the prediction of CA also contributes to suitable treatment options. This retrospective study aimed to identify any relationship between acute appendicitis (AA) and preoperative blood test levels and whether these parameters can differentiate between NCA and CA patients. A database of 201 appendectomies and 100 control healthy patients was analyzed between 2019 and 2022. Patients were divided into three groups: NCA without peritonitis or phlegmonous appendicitis as group 1; CA with perforated, necrotizing appendicitis with peritonitis as group 2; and the healthy control group (CG) as group 3. White blood cell (WBC), platelet distribution width (PDW), mean platelet volume (MPV), red cell distribution width (RDW), creatine kinase (CK), and bilirubin levels were collected from the patients and compared statistically between the groups. Age, WBC, and PDW levels were set as predictive in the differential diagnosis of CA as a result of receiver operating characteristic (ROC) analysis. The multivariate analysis demonstrated that age (OR: 1.023; 95% CI: 1.000-1.045; P = 0.04), male sex (OR: 3.718; 95% CI: 1.501-9.213; P = 0.005), WBC levels (OR: 1.000; 95% CI: 1.000-1.000; P = 0.002), and PDW levels (OR: 2.129; 95% CI: 1.301-3.484; P = 0.003) were independently associated with CA. Age, higher WBC count, and PDW levels are valuable in differentiating the diagnosis of CA from NCA, and this could be a feasible approach for surgical decisions.

Red cell distribution width, platelet distribution width, and plateletcrit as indicators of prognosis in COVID-19 patients - A single-center study

Background: COVID-19 is still present in the world, though the extent varies by region and country. According to the World Health Organization, there have been over 617 million confirmed cases of COVID-19 and over 13 million deaths worldwide since the pandemic began on March 10, 2023. Aims and Objectives: This is a study conducted with the aim of providing biomarkers to predict COVID-19 disease progression and mortality based on red cell indices and platelet indices which are commonly measured as part of a complete blood count (CBC). Materials and Methods: A prospective study was conducted during the peak of the second wave of COVID-19 from March 2021 to June 2021. The study included 540 patients who were admitted to the Government General Hospital, Nizamabad, and had tested positive for COVID-19 by RT-PCR. Red Blood Cell (RBC), Hematocrit (HCT), Red cell indices like Mean Corpuscular Volume (MCV), Mean Corpuscular Hemoglobin (MCH), Mean Corpuscular Haemoglobin Concentration (MCHC), Red Cell Distribution width (RDW) and Platelet indices like Mean Platelet Volume (MPV), Platelet Distribution Width (PDW), Plateletcrit (PCT), Platelet–Large Cell Ratio were taken from CBC analyzer Sysmex XN-1000 and analyzed statistically. The patients were then followed up for a period of 14 days to track their outcomes. Results: In the data, majority were male n=334 (62%) and n=280 (38%) were female. 70.37% (n=380) were survivors and 29.63% (n=160) were non-survivors. Red blood cell, red cell indices such as RDW-CV and RDW-SD, and platelet indices such as PCT and PDW were significantly higher in non-survivors compared to survivors with P&lt;0.05. Conclusion: Non-survivors had significantly higher levels of RDW-CV, RDW-SD, PCT, and PDW compared to survivors. These parameters in combination can be useful for predicting COVID-19 mortality at early stage in forthcoming waves.

Platelet distribution width and the risk of unexplained recurrent pregnancy loss: a meta-analysis.

Changes of platelet distribution width (PDW) have been observed in women with unexplained recurrent pregnancy loss (URPL). However, relevant previous studies showed inconsistent results. We performed a meta-analysis to comprehensively evaluate the association between PDW and URPL. Observational studies reporting the difference of PDW between women with and without URPL were retrieved by searching PubMed, Embase, Web of Science, Wanfang, and CNKI. A random-effect model was used to pool the results by incorporating potential heterogeneity. Eleven case-control studies with 1847 women with URPL and 2475 healthy women were included. Age was matched for all studies between cases and controls. Pooled results showed women with URPL had significantly increased level of PDW (mean difference [MD]: 1.54%, 95% CI: 1.04 to 2.03, p < 0.05; I2 =77%). Subgroup analysis showed consistent result for URPL defined as ≥ 2 (MD: 1.45%, p = 0.003) and ≥ 3 (MD: 1.61%, p < 0.001) failed clinical pregnancies, and in studies compared to women with normal pregnancy (MD: 2.02%, p < 0.001) and non-pregnant healthy women (MD: 1.34%, p < 0.001). Results of the meta-analysis also showed that increment of PDW was associated with higher odds of URPL (per 1 unit, odds ratio: 1.26, 95% CI: 1.17 to 1.35, p < 0.001; I2 = 0%). Women with URPL had significantly increased levels of PDW compared to healthy women without URPL, which suggest that higher PDW may predict the risk of URPL.