Mean Platelet Volume Levels Research Articles

Clinical and laboratory factors associated with hospitalization and mortality in the COVID-19 pandemic

Introduction: This study aimed to investigate the relationship between MPV and disease prognosis in patients with COVID-19, the chronic diseases that affect the prognosis of COVID-19, and the laboratory data that can help diagnose this disease and provide information about the course of the disease during the treatment process. Methods: The study was conducted in a cross-sectional format. All participants gave written, informed consent to participate. A questionnaire consisting of two parts, including categorical (socio-demographic) data and laboratory data, was applied to people who had COVID-19 who applied to the internal medicine outpatient clinic of the hospital. The Pearson chi-squared test and Fisher exact test were used for comparing categorical variables. The Mann-Whitney U test, or Kruskal-Wallis test with Bonferroni post hoc comparisons, was used to compare numerical variables between the groups. All analyses were performed using the SPSS 25.0 (SPSS Inc., Chicago, IL, ‎USA) software package. Results: The participants' mean (±SD) age was 40.8±13.7 years (median: 40, range: 18 – 72). Almost half of the participants (48.0%, n=98) were male, the majority (76.0%, n=155) were married, and 24.0% (n=49) were single. Of the 204 patients, 28 (13.7%) were hospitalized, and five died (2.5%). Of the five patients who died, three had chronic lung disease, one had diabetes and chronic lung disease, and one had no chronic disease. Conclusion: Older age and the presence of chronic diseases are important factors affecting hospitalization in patients with COVID-19. LDH, CRP, and ferritin levels were high, and the mean platelet volume levels were significantly higher in hospitalized patients. Keywords: COVID -19, pandemics, prognosis of COVID -19

Effect of thyroid hormone status on complete blood cell count-derived inflammatory biomarkers in patients with moderate-to-severe Graves' ophthalmopathy.

To evaluate the systemic inflammation in moderate-to-severe Graves' ophthalmopathy patients with abnormal thyroid function by using complete blood cell count-derived inflammatory biomarkers and compare to moderate-to-severe GO patients with regulated thyroid function and healthy controls. The second aim is to evaluate the relationship of complete blood cell count-derived inflammatory biomarkers with clinical findings in moderate-to-severe GO. In this retrospective study, 90 GO patients with abnormal thyroid function composed Group 1, 58 patients who had normal thyroid function for at least 3months composed Group 2, and 50 healthy individuals composed Group 3. Demographic data, neutrophil-to-lymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR), platelet-to-lymphocyte ratio (PLR), mean platelet volume (MPV), and systemic immune-inflammatory index (SII) were evaluated. There was no statistically significant difference between groups in terms of age, sex, and smoking habits (p > 0.05). There was a statistically significant difference in NLR (p = 0.011), MLR (p = 0.013), MPV (p < 0.001), and SII (p < 0.001) values among 3 groups. For NLR, MLR, and SII the highest values were detected in Group 1. MPV levels were higher in Group 3 than Groups 1 and 2 (p < 0.001). None of the hematological parameters were found to be a risk factor for any clinical severity findings of GO. The higher levels of NLR, MLR, and SII levels may show systemic inflammation in GO patients with abnormal thyroid function, and this may have an impact on the clinical course of ophthalmopathy. These findings may suggest that cautious control of thyroid hormone levels is important in the management of GO.

Neutrophil-to-lymphocyte ratio and platelet-to-lymphocyte ratio are positively correlated with disease activity of bullous pemphigoid.

Bullous pemphigoid (BP) is a complex inflammatory process with elevated levels of autoantibodies, eosinophils, neutrophils, and various cytokines. Hematological inflammatory biomarkers can reflect inflammatory state in various diseases. Up to now, the correlations of hematological inflammatory biomarkers and disease activity of BP remain unknown. The purpose of this study was to clarify the associations between hematological inflammatory biomarkers and disease activity of BP. The levels of neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), platelet-to-neutrophil ratio (PNR) and mean platelet volume (MPV) of 36 untreated BP patients and 45 age and gender matched healthy controls were detected by routine blood tests. The correlations between hematological inflammatory markers and clinical characteristics of BP were statistically analyzed. The Bullous Pemphigoid Disease Area Index (BPDAI) was used to measure disease activity of BP. The mean levels of NLR, PLR, PNR and MPV in 36 untreated BP patients were 3.9, 157.9, 45.7 and 9.4fl, respectively. Increased NLR (p < 0.001), PLR (p < 0.01), and MPV (p < 0.001) but decreased PNR (p < 0.001) were observed in BP patients when compared with healthy controls. In BP patients, the levels of NLR were positively correlated to BPDAI Erosion/Blister Scores (p < 0.01); and the levels of NLR and PLR were both positively correlated to BPDAI without Damage Score (both p < 0.05) and BPDAI Total Score (both p < 0.05). No correlation was found in other statistical analyses between hematological inflammatory markers and clinical characteristics in BP patients involved in the present study. Therefore, NLR and PLR are positively correlated with disease activity of BP.

Can Propranolol Affect Platelet Indices in Infantile Hemangioma?

Propranolol, a nonselective beta-blocker used in the medical treatment of infantile Hemangioma (IH), has been shown to decrease the levels of vascular endothelial growth factor and reduce angiogenesis with its antiproliferative and antiangiogenetic effects. It has been reported that the storage, transport, and secretion of vascular endothelial growth factor (VEGF) are associated with platelet volume indices (PVI). We aimed to investigate the effect of propranolol on PVI in IH patients. Propranolol treatment was started on 22 IH patients. Platelets, mean platelet volume (MPV), platelet distribution width (PDW), and plateletcrit values in the follow-ups at months 0, 1, and 2 were compared between 22 patients who received treatment and 25 patients who did not. While a statistically significant difference between months 0, 1, and 2 in PDW and MPV values was detected in the treated group, it was not detected in the untreated group. Taking into consideration that VEGF levels were higher at the beginning of the treatment in the pathophysiology of the disease, it was thought that the decrease in VEGF levels by propranolol may have led to a decrease in MPV and PDW levels in the treatment group. Consequently, in IH cases, propranolol response follow-up can be evaluated with PVIs, especially MPV and PDW, and it may facilitate clinicians' monitoring of the disease after propranolol administration.

Monocyte eosinophil ratio and red blood cell distribution width in the diagnosis of asthma

Objective: Bronchial asthma is often associated with chronic airway inflammation and airway hyperresponsiveness in which many cells and mediators are involved. Pulmonary function tests (PFTs) are used in the diagnosis of the disease. Yet PFTs are not available in every healthcare institution or some of the patients cannot cooperate with the procedure. The aim of this study was to determine whether mean platelet volume (MPV), platelet distribution width (PDW), monocyte lymphocyte ratio (MLR), monocyte eosinophil ratio (MER), and platelet lymphocyte ratio (PLR) can be used in the diagnosis of bronchial asthma.&#x0D; &#x0D; Method: Two hundred and twelve patients who were diagnosed with bronchial asthma according to the Global Initiative for Asthma (GINA) criteria and 187 patients who were deemed not to have asthma were included in the study. Two patient groups were compared by examining the hemogram parameters at the time of diagnosis or exclusion of asthma.&#x0D; &#x0D; Results: The levels of MPV, neutrophil-lymphocyte ratio (NLR), and PLR were significantly lower in the Asthma group (p

The role of mean platelet volume (MPV) and platelet distribution width (PDW) pre-operating as sepsis indicators in laparotomy patients in Dr. Zainoel Abidin Hospital Banda Aceh, Indonesia

Background: Sepsis has become the most common postoperative complication caused by major surgery. Early diagnosis of sepsis is very important to know the patient's prognosis and survival. Changes in mean platelet volume (MPV) and platelet distribution width (PDW) were assessed to have a relationship with the incidence of sepsis. The use of MPV and PDW platelet preoperative indicators is expected to help predict sepsis so that appropriate interventions can be given immediately. Methods: A total of 50 patients who met the inclusion criteria became the subjects of this study to determine the potential of MPV and PDW preoperative biomarkers for predicting sepsis in laparotomy patients. All blood tests for the diagnosis of sepsis were examined. Spearman's test and ROC curve were performed for statistical calculations to determine the cut-off point for MPV and PDW. Results: Analysis of the relationship between PDW and MPV values ​​as an indicator of sepsis using the Spearman test found a significant relationship between MPV and PDW ​​on the incidence of sepsis (p&lt;0.05). Furthermore, statistical tests using the ROC area under the curve (AUC) curve, MPV levels were 0.968, which indicates that if MPV were examined in 100 patients, it would predict sepsis in 96 patients. Meanwhile, the AUC of PDW is 0.770, which shows that if MPV examination is performed in 100 patients, it will predict sepsis in 77 patients. . The best cut-off point ​​that the researchers got in this study was MPV levels 9.8 fL (sensitivity 93.3% and specificity 85%) and PDW levels 9.45 fL (70% sensitivity and 70% specificity). Conclusion: Preoperative MPV and PDW can be predictive indicators of sepsis in laparotomy surgery, with MPV sensitivity and specificity of 93.3% and 85% and sensitivity and specificity of PDW of 70% and 70%, respectively.

Akut Pankreatitte Yeni Bir İnflamatuar Belirteç Olarak Ortalama Trombosit Hacmi ve C-Reaktif Protein ile Başvuru Anındaki Ranson Skoru ile İlişkisi

Aim: The study’s aim is to evaluate mean platelet volume (MPV) as a marker of inflammation in patients&#x0D; with acute pancreatitis (AP) and to analyse the relationships among MPV, CRP (C-reactive protein) and&#x0D; Ranson’s score.&#x0D; Material and Methods: In this study, 119 patients with AP (mean age 53.8 ± 18.0 years) and 88 healthy&#x0D; control group (mean age 53.1 ± 6.8 years) were enrolled. Among the patients with AP, 75 were classified&#x0D; as having biliary AP, and 44 were classified as having nonbiliary AP. All patients’ demographic data,&#x0D; clinical and laboratory findings and Ranson’s scores were examined from the hospital’s database.&#x0D; Results: MPV was significantly lower among patients with AP than among the control group (p = 0.001).&#x0D; CRP was significantly higher among patients with AP than among the control group (p&lt; 0.001). The&#x0D; difference in MPV between the biliary and nonbiliary AP group was statistically not significant. When&#x0D; we compared MPV based on patients’ lengths of hospital stay, there was no significant difference. In&#x0D; correlation analysis, there was no correlation among CRP, Ranson’s score and serum MPV levels.&#x0D; Conclusion: We observed that MPV levels in the AP group were lower than healthy controls. Thus, like&#x0D; other inflammation markers, MPV might be a useful marker for AP diagnosis.

Association Between Mean Platelet Volume and Functional Outcome in Patients with Acute Ischemic Stroke: A Systematic Review with Meta-Analysis (P6-5.023)

<h3>Objective:</h3> To conduct a systematic review with meta-analysis to summarize the current evidence on MPV as a potential biomarker for functional outcome in patients with acute ischemic stroke. <h3>Background:</h3> Evidence has shown an association between blood biomarkers, such as mean platelet volume (MPV), and the formation of thrombosis and embolisms. <h3>Design/Methods:</h3> A systematic search was conducted in PubMed, Embase, Scopus, Web of Science, and Google Scholar until December 2021. A meta-analysis was applied with a random effects model by the Paule-Mandel estimator. Likewise, a subgroup analysis was performed according to the treatment reveived by patients. Sensitivity analysis was performed using exclusion meta-analysis and the Dersimonian-Laird estimator. To identify the certainty of the evidence, the GRADE criteria for continuous outcomes were performed. <h3>Results:</h3> We selected 37 studies from our initial search. A meta-analysis of 9 studies (1707 patients) with moderate certainty of the evidence showed that higher MPV levels at hospital admission were predictor of poor functional outcome (modified Rankin Scale &gt;2) at three months (Difference of means [DM]: 0.64; 95% CI: 0.33, 0.94; I2= 78%). An analysis by subgroups was performed according to the treatment administered and no statistically significant differences were found (Intravenous thrombolysis [DM]: 0.82; 95% CI: 0.22, 1.42; I2= 82%; Treatment not specified [DM]: 0.49; 95% CI: 0.20, 0.78; I2= 75%). Likewise, the sensitivity analysis did not weaken our results. <h3>Conclusions:</h3> With moderate certainty of the evidence, we found that MPV is useful as a prognostic biomarker in patients with acute ischemic stroke. These results can help to identify patients with greater severity; however, more research is required to control posible confounding variables through sensitivity and specificity analysis. <b>Disclosure:</b> Miss Pascual-Guevara has nothing to disclose. Mr. Cabanillas Lazo has nothing to disclose. Miss Cruzalegui Bazán has nothing to disclose. Mr. Vicuña has nothing to disclose. Miss Cierto Torre has nothing to disclose. Mr. Vallejos has nothing to disclose. Dr. Sequeiros Chirinos has nothing to disclose. Carlos Alva-Diaz has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche Farma. Carlos Alva-Diaz has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Roche Farma. The institution of Carlos Alva-Diaz has received research support from Roche farma.

Systemic Inflammatory Marker Levels in Serous Macular Detachment Secondary to Retinal Vein Occlusion.

To evaluate the association of systemic inflammatory marker levels in macular edema with serous macular detachment (SMD) secondary to retinal vein occlusion (RVO). Patients diagnosed with RVO were categorized into two groups based on the presence or absence of SMD: Group 1 included 30 eyes with SMD, while Group 2 included 30 eyes without SMD. Levels of neutrophils, monocytes, lymphocytes, thrombocytes, and mean platelet volume (MPV) were analyzed. Systemic inflammatory markers, including neutrophil-lymphocyte ratio (NLR), platelet-lymphocyte ratio (PLR), and systemic immune-inflammation index (SII), were calculated and compared between the two groups. The mean neutrophil levels were significantly higher in Group 1 (P = 0.002). The mean lymphocyte, monocytes, thrombocyte, and MPV levels did not differ significantly between groups. NLR and SII levels were significantly higher in the SMD group (P = 0.004 and P = 0.016, respectively). There was no significant difference between the groups in terms of PLR. The optimal receiver operator characteristic (ROC) cut-off value of NLR for SMD was calculated as 1.55 with 73% sensitivity and 63% specificity (area under the curve [AUC] = 0.714, 95% confidence interval [CI]: 0.584-0.845). The optimal ROC cut-off value of SII for SMD was calculated as 451.75 with 63% sensitivity and 63% specificity (AUC = 0.681, 95% CI: 0.546-0.816). In this study, branch RVO was present in 48 patients, and central RVO was present in 12 patients. Neutrophil, MPV levels, and NLR, PLR, SII ratios were similar between patients with branch and central occlusion. Neutrophil levels, NLR, and SII were found to be significantly higher in eyes with SMD secondary to RVO.

The Role of Mean Platelet Volume in Multisystem Inflammatory Syndrome in Children With Cardiac Manifestations.

Multisystem inflammatory syndrome in children (MIS-C) is a novel pediatric disorder associated with coronavirus disease 2019. However, no laboratory parameters can diagnose MIS-C. This study aimed to determine the changes in mean platelet volume (MPV) and investigate its relationship with cardiac involvement in MIS-C. In this single-center retrospective study, 35 children with MIS-C, 35 healthy children and 35 febrile children were enrolled. Patients with MIS-C were further subdivided depending on the presence of cardiac involvement. For all patients, the white blood cell, absolute neutrophil, absolute lymphocyte, platelet counts, MPV and C-reactive protein levels were recorded. Ferritin, D-dimer, troponin and CK-MB levels and the day when IVIG was administered were recorded and compared between groups. Thirteen patients with MIS-C had cardiac involvement. The mean MPV of the MIS-C group was significantly higher than those of the healthy ( P = 0.0001) and febrile ( P = 0.027) groups. Using a cutoff of >7.6 fL, the MPV had a sensitivity of 82.86% and specificity of 82.75%, and the area under the MPV receiver operating characteristics curve was 0.896 (0.799-0.956). The MPV was significantly higher in patients with cardiac involvement than in those without ( P = 0.031). Logistic regression analysis revealed that the association between the MPV and cardiac involvement was significant (odds ratio, 2.28; 95% confidence interval, 1.04-2.95; P = 0 .039). The MPV may indicate cardiac involvement in patients with MIS-C. Large cohort studies are needed to define an accurate cutoff value for the MPV.

The Effect of Platelet and Mean Platelet Volume Levels on Standard-dose Methylprednisolone Treatment Response in Primary Immune Thrombocytopenia.

Standard-dose methyl-prednisolone (methyl-Pd) is generally preferred as the first-line treatment in immune thrombocytopenia (ITP) unless there is an urgent indication to increase the platelet value. A significant proportion of patients (around 40%) does not benefit from this treatment. This study investigated whether pretreatment platelet level and other hemogram indices in patients with ITP patients can be used to predict early response to standard-dose methyl-Pd treatment. Patients who received first-line standard-dose methyl- Pd therapy with the diagnosis of primary ITP were included. Patients were categorized as complete responder (CR), responder (R), and non-responder (NR) according to the response status obtained within the first 14 days of treatment. The hemogram indices of the CR, R, and NR groups measured at the start of the treatment were compared retrospectively. One hundred forty four patients with ITP were included in the study. The number of patients with NR, R, and CR were 47 (33%), 40 (28%), and 57 (39%), respectively. The mean platelet level of the NR group was lower than responders (R and CR groups) (p=0.002 and p=0.049, respectively). The mean platelet volume (MPV) levels of the NR group were statistically lower than that of the CR group (p=0.018). If MPV ≥10 fL and platelet >12,000/mm³, the probability of an early response with methyl-Pd is higher [sensitivity =98.1% (95% confidence interval (CI) =89.7-99.9%), specificity =45% (95% CI =23.1-68.5%), positive predictive value =82.3% (95% CI =75.7-87.4%), negative predictive value =90% (95% CI =54.9-98.5%)]. Patients with ITP with low platelet and MPV levels were less responsive to standard-dose methyl-Pd treatment. It may be more appropriate to apply more effective treatments to these patients other than standard-dose methyl-Pd alone.

Kovid-19 Hastalarında NLR, D-Dimer ve MPV Değerleri Mortaliteyi ve Klinik Ciddiyeti Öngörebilir Mi?

Objective: In this study, we aim to determine the relationship between neutrophil/lymphocyte ratio (NLR), D-dimer, and mean platelet volume (MPV) parameters with mortality and clinical severity in Covid-19 patients. Materials and Methods: This retrospectively planned study included Covid-19 patients admitted to the emergency department between March 2020 and September 2020. Sociodemographic characteristics, laboratory parameters, and imaging results of the patients were obtained. The patients were grouped according to the development of mortality and clinical follow-up. Results: Seven hundred patients were included in the study and the mean age of the patients was 49.1±18.2 years. Mortality developed in 5.4% (n=38) of the patients. NLR, D-dimer, and MPV levels of patients who developed mortality were higher than those who survived (p&amp;lt;0.001; p &amp;lt;0.001 and p=0.035, respectively). In ROC analysis, &amp;gt;6 NLR levels, &amp;gt;8.45 MPV levels, and &amp;gt;0.57 D-dimer levels were found to be predictive for mortality (p&amp;lt;0.001; p=0.019; p &amp;lt;0.001, respectively). Conclusions: The high NLR, D-dimer, and MPV levels obtained at the time of admission in Covid-19 patients can be used as an indicator of mortality. Elevated NLR and D-dimer levels are useful in determining the severity of the disease and clinical follow-up.

The effect of thrombosis-related laboratory values on mortality in COVID-19 infection.

COVID-19 may cause thrombosis in both venous and arterial systems. Familiarity with the signs and symptoms of thrombosis and its treatment is essential in treating COVID-19 infection and its complications. D-Dimer and mean platelet volume (MPV) are measurements related to the development of thrombosis. This study investigates whether MPV and D-Dimer values could be used to determine the risk of thrombosis and mortality in the COVID-19 early stages. 424 patients who were COVID-19 positive, according to the World Health Organization (WHO) guidelines, were randomly and retrospectively included in the study. Demographic and clinical characteristics such as age, gender, and length of hospitalization were obtained from the digital records of participants. Participants were divided into living and deceased groups. The patients' biochemical, hormonal, and hematological parameters were analyzed retrospectively. White blood cells (WBC), neutrophils, and monocytes were significantly different in the two groups (p-value <0.001), and their values were lower in the living group than in the deceased group. MPV median values did not differ according to prognosis (p-value = 0.994). While the median value was 9.9 in the survivors, it was 10 in the deceased. Creatinine, procalcitonin, ferritin, and the number of hospitalization days in living patients were significantly lower than in patients who died (p-value <0.001). Median values of D-dimer (mg/L) differ according to prognosis (p-value <0.001). While the median value was 0.63 in the survivors, it was found as 438 in the deceased. Our results did not show any significant relationship between the mortality of COVID-19 patients and their MPV levels. However, a significant association between D-Dimer and mortality in COVID-19 patients was observed.

Clinical value of the platelet and inflammatory factor activation in vascular endothelial injury in essential hypertension.

To investigate the clinical value of platelet and inflammatory factor activation in vascular endothelial injury in hypertension. A total of 120 hypertension patients diagnosed in our hospital from December 2019 to June 2021 were enrolled as study objects (Hypertension group); besides, another cohort of 60 healthy people undergoing physical examination at the same period were recruited as the controls (Control group). Next, the baseline clinical characteristics of subjects in the two groups were recorded and compared. Specifically, a hematology analyzer was adopt for detecting the mean platelet volume (MPV), platelet distribution width (PDW) and platelet hematocrit (PCT); ELISA for the level of IL-6, IL-8 and TNF-α; PHILIPS EPIQ 7 C (a device assessing endothelial vasodilator function in a non-invasive fashion) for reactive hyperemia index (RHI); univariate and multivariate regression analysis for risk factors triggering endothelial dysfunction; and Spearman correlation analysis for the correlation of platelet activation indicators and inflammatory factor level with vascular endothelial function. Compared with the Control group, the patients in the Hypertension group exhibited higher levels of MPV, PDW, PCT, inflammatory factors (IL-6, IL-8 and TNF-α) and lower RHI. Moreover, Spearman correlation analysis showed a significant negative correlation of MPV, PDW, PCT, IL-6, IL-8 and TNF-α level with RHI level. In addition, univariate and multivariate regression analysis presented that MPV, PCT, IL-8 and TNF-α were risk factors for vascular endothelial dysfunction. The activation of platelet and inflammatory factor is closely related to vascular endothelial function injury in patients with hypertension. To be specifically, platelet and inflammatory factor activation can effectively reflect the vascular endothelial function injury in patients with hypertension and has high clinical value.

Procalcitonin level, neutrophil to lymphocyte count ratio, and mean platelet volume as predictors of organ dysfunction and mortality in children with sepsis

Background Procalcitonin (PCT) level is one of known biomarker in septic diagnosis, but limited studies report its benefit in predicting the outcomes of children with sepsis. Neutrophil to lymphocyte (NLR) and mean platelet volume (MPV) are simple biomarkers of inflammation that can be measured in routine hematological examination which role in predicting organ dysfunction remain unclear.&#x0D; Objective To understand the correlations between PCT level, NLR, and MPV, tested in the first day of admission with outcomes of septic children in intensive care unit.&#x0D; Methods This retrospective cohort study obtained the data from medical record of pediatric patients admitted in PICU and HCU since January 2019. The inclusion criteria were children aged 1 months to 18 years with sepsis; whie exclusion criteria were patients with congenital heart disease, hematologic disease, malignancy, and length of care in intensive care unit less than 3 days or more than 28 days. The PCT, NLR, and MPV levels were assessed in the first day of admission. Organ dysfunction was identified using qSOFA score more than 2 points. &#x0D; Results Sixty-nine septic children were reviewed. Procalcitonin level in the first day of admission correlated significantly with qSOFA score in the third day of admission (R= 0.639; P=0.000); as well as with mortality (R=0.747; P=0.000). Receiver operating characteristic (ROC) curve of PCT level in the first day of admission had area under curve (AUC) of 0.922 to predict organ dysfunction (cut off 3.425; sensitivity 95.8%; specificity 52.4%) and AUC of 0.952 to predict mortality (cut off 21.165; sensitivity 96.4%; specificity 78%).&#x0D; Moreover, NLR in the first day of admission correlated significantly with qSOFA in the third day of admission (R=0.407; P=0.001), but did not correlate with mortality. The ROC of NLR to predict organ dysfunction was 0.829 (cut off 3.52; sensitivity 87.5%; specificity 66.7%). There was no correlation between MPV in the first day of admission with qSOFA score in the third day of admission neither with mortality.&#x0D; Linear regression test showed that PCT level and NLR in the first day of admission simultaneously had correlated with qSOFA score in the third day of admission (R=0.696; P= 0.000) and mortality (R=0.748; P=0.000). Meanwhile, PCT and MPV simultaneously had correlation with qSOFA score in the third day of admission (R=0.688; P=0.000) and mortality (R=0.733; P=0.000). Moreover, NLR and MPV simultaneously had correlation with qSOFA score in the third day of admission (R=0.453; P=0.002). All three independent variables (PCT level, NLR, and MPV) simultaneously correlated with qSOFA score in the third day of admission (R= 0.744; P=0.000) and mortality (R=0.739; P=0.000).&#x0D; Conclusion There are significant correlations between each, PCT level and NLR in the first day of admission with qSOFA score in the third day of admission as well as with mortality. There is no correlation between MPV in the first day of admission with qSOFA score in the third day of admission, neither with mortality. There are significant correlations between PCV level and NLR with or without MPV with qSOFA score in the third day of admission as well as with mortality.

Diagnostic significance of hematological parameters in brucellosis

&lt;b&gt;Introduction:&lt;/b&gt; Changes in hematological parameters are frequently observed in brucellosis patients. In this study, it was aimed to evaluate the diagnostic significance of some hematological parameters in patients with brucellosis&lt;b&gt;.&lt;/b&gt;&lt;br /&gt; &lt;b&gt;Material and methods: &lt;/b&gt;In this case-control study, the data of brucellosis patients and healthy volunteers followed up in the Outpatient Clinic of Infectious Diseases between 2018 and 2020 were retrospectively examined. In the hemogram examination of patients with brucellosis and health volunteers; hematological parameters such as the leukocyte, hemoglobin, neutrophil, lymphocyte, monocyte, platelet, ratio of neutrophil/lymphocyte, ratio of platelet/lymphocyte, ratio of monocyte/lymphocyte and mean platelet volume were compared.&lt;br /&gt; &lt;b&gt;Results: &lt;/b&gt;255 people, 169 (66.3%) of whom were diagnosed with brucellosis and 86 (33.7%) from the control group, were included to the study. These participants of 112 (43.9%) were male and 143 (56.1%) were female. The patients diagnosed with brucellosis, of 62 (36.7%) were considered acute, of 62 (36.7%) subacute, and of 45 (26.6%) chronic brucellosis. leukocyte, hemoglobin, neutrophil, and neutrophil/lymphocyte levels were found to be lower in the brucellosis group compared to the control group, while mean platelet volume level was found to be higher. Hemoglobin was found to be lower and mean platelet volume higher in all brucellosis subgroups.&lt;br /&gt; &lt;b&gt;Conclusion: &lt;/b&gt;In this study, the following findings were determined to be important: the lowness of leucocyte and hemoglobin and highness of mean platelet volume in brucellosis patients, as well as the highness of lymphocyte levels and lowness of neutrophil/lymphocyte and platelet/lymphocyte levels in the subacute brucellosis subgroup. In addition, it was concluded that the mean platelet volume parameter can be used as a diagnostic test for brucellosis.

Correlation of Mean Platelet Volume with D-dimer in Patients with COVID-2019

SARS-CoV-2 binds to ACE2 receptors and causes endothelial injury. Endothelial injury causes the release of tissue factors and triggers the activation of the coagulation cascade, which is characterized by an increase in D-dimer levels. The increase in D-dimer levels reflects the activation of coagulation and fibrinolysis. Endothelial injury leads to platelet adhesion and aggregation. Mean platelet volume is a low-cost, routinely performed parameter available in hematology analyzers at various health facilities. This study aimed to determine the correlation between MPV and D-dimer in COVID-19 patients. This study was an analytical study with a cross-sectional design conducted on 88 subjects aged 18-50 years from COVID-19 patients who were admitted at Dr. M. Djamil Central Hospital in May-September 2021. Mean platelet volume levels were measured using the impedance method and D-dimer levels using the ELISA method. Data were analyzed using the Pearson correlation test, significant if p&lt;0.05. The mean age was 33.47 years, range of 18-50 years. Most of the subjects were female, 53 people (62.4%). The mean MPV level was 10.36 (0.87) fL. The mean D-dimer levels were 728.51 (500.99) ng/mL. Correlation analysis showed that mean platelet volume had a weak positive correlation with D-dimer (r=0.269, p=0.013). This study showed an increase in MPV and D-dimer levels in COVID-19 patients. There is a weak correlation between MPV and D-dimer in COVID-19 patients.

Maximum amplitude and mean platelet volume in the blood as biomarkers to detect lung adenocarcinoma cancer featured with ground-glass nodules

Objectives The development and progression of malignancies are closely linked to hypercoagulability. As an early type of lung adenocarcinoma, ground glass nodules (GGNs) have been detected increasingly. Blood Maximum amplitude (MA) and mean platelet volume (MPV) are related to various conditions of hypercoagulability. Therefore, the role of MA and MPV in diagnosing lung adenocarcinoma cancer featured with GGNs was investigated in this case-control study. Methods The analyzed data of this study is derived from GGNs patients and healthy individuals in West China (Airport) Hospital Sichuan University. The differences between GGNs patients and healthy individuals were determined by one-way ANOVA, logistic regression or chi-squared test. The accuracy of diagnostic was performed by receiver operating characteristic curve (ROC). The relative mRNA expressions were studied by RT-qPCR. Results 470 patients diagnosed with GGNs which benign lesions (BN group) are inflammatory and malignant lesions (LC group) are adenocarcinoma in stage IA, and 235 healthy subjects (HC group) were enrolled in this study. Levels of MA and MPV were increased in LC group compared with BN and HC group ( p &lt; 0.001, p &lt; 0.001). When we combined MA and MPV, MA and MPV presented a sensitivity (SEN) of 0.809 and a specificity (SPE) of 0.774. And the area under the curve (AUC) increased to 0.871 (0.837–0.900) when confidence interval was 95%. Conclusion This study demonstrates that there have been systemic changes in coagulation disorders in the pathogenesis of GGNs. The diagnostic ability to different lung adenocarcinoma cancer featured with GGNs from benign or healthy controls can be improved by the combination of MA and MPV. Maximum amplitude and MPV may be used as biomarkers to detect lung adenocarcinoma cancer featured with GGNs.

Platelet lymphocyte ratio, lymphocyte monocyte ratio, mean platelet volume, and neutrophil lymphocyte ratio in Behcet’s disease and their relation to disease activity

BackgroundBehcet’s disease (BD) does not have specific laboratory finding or pathological physical examination sign, and only few studies have investigated Neutrophil to lymphocyte ratio (NLR), platelets to lymphocytes ratio (PLR), lymphocytes to monocytes ratio (LMR), or mean platelet volume (MPV) values in patients with BD. We conducted this study to investigate the relationship between these indices and Behcet’s disease (BD) and to determine their relation to BD disease activity.ResultsThis study is a case-control study that included 36 Behcet’s disease patients and 36 healthy controls. BD patients showed significant increase in the mean of NLR and PLR in comparison to control (P = 0.008 and 0.011) respectively, and highly significant decrease in LMR and MPV levels in BD patients in comparison to control (P < 0.001 and < 0.001) respectively. Also, we found that NLR, PLR, and LMR were significantly related to BD activity, and there were significant associations between the studied hematological parameters with some of muco-cutaneous, articular, gastrointestinal, eye, and nervous system manifestations in BD patients.ConclusionThe blood indices NLR, PLR, LMR, and MPV are potential inflammatory markers that can be used to evaluate inflammatory status and disease activity in patients with BD. NLR and PLR showed positive relation being higher in active disease and also higher in highly active disease than in low disease activity. Also, LMR was significantly decreased in Behcet’s disease patients in relation to disease activity. Furthermore, NLR and PLR levels were significantly more associated with muco-cutaneous and nervous system involvement while, LMR levels were significantly associated with muco-cutaneous, articular, gastrointestinal and eye manifestations and MPV levels were associated with articular manifestations being significantly related to disease activity. These easily evaluated markers could help in the management of this disease with multisystem affection that are sometimes serious and potentially life threatening.

Platelet, Mean Platelet Volume and Platelet Distribution Width Levels Might Be a Promising Marker for the Prediction of Disease Severity, Mucosal Healing and Steroid Dependence in Patients With Ulcerative Colitis.

In this study, we aimed to determine the value of mean platelet (PLT) volume (MPV), PLTand PLT distribution width (PDW) levels as a marker in the prediction of mucosal healing (MH), steroid resistance (SR) and steroid dependence (SD) in newly diagnosed moderate and severely active patients with ulcerative colitis (UC), who did not receive medical treatment before. Two hundred forty-nine patients with severely or moderately active UC and 50 healthy subjects were enrolled in the study after retrospective analysis. Disease severity and MH of UC were determined according to the Mayo Score.According to the results of remission induction therapy, the patients were divided into two groups: Group 1; MH positive and Group 2; MH negative. UC patients with clinical remission (CR) but without MH were divided into two subgroups SD and non-SD during their follow-up. These two groups and subgroups were compared for variables. 42.6% of patients with UC had severe disease activation. 44.6% of patients with UC had pancolitis. After remission induction therapy, CR was observed in 84.3% of patients with UC. MH rate was 53.0%. SR rate was 15.7% and the SD rate was 16.1%. A strong positive correlation was observed between C reactive protein (CRP), PLTand Mayo score in the activation period (r=0.835 and p<0.001; r=0.883 and p<0.001; respectively). A strong negative correlation was observed between mean PLT volume (MPV), PDWlevels and Mayo score (r=-0.905 and p<0.001; r=-0.805 and p<0.001; respectively). According to the receiver operating characteristic curve (ROC) analysis, PLT had a sensitivity of 42.4% and a specificity of 22.7% in the prediction of MH at a cut-off value of 266.5x103/µL. MPV had a sensitivity of 83.5% and a specificity of 73.5% in the prediction of MH at a cut-off value of 8.05 fL. PDW had a sensitivity of 88.6% and a specificity of 84.5% in the prediction of MH at a cut-off value of 2.95 fL. PLT was determined with 92.5% sensitivity and 86.8% specificity in the prediction of SD at a cut-off value of 287.0x103/µL. MPV had a sensitivity of 86.8% and a specificity of 67.5% in the prediction of SD at a cut-off value of 7.95 fL. PDW had a sensitivity of 73.7% and a specificity of 72.5% in the prediction of SD at a cut-off value of 12.55 fL. There was a positive correlation between PLT levels and Mayo score, and a negative correlation between Mayo score and MPV or PDW levels. We think that PLT, MPV and PDW levels may be promising markers in the evaluation of disease activation/remission and severity. We believe that PLT, MPV and PDW levels will be determinative especially in the exclusion of SD, for UC patients with CR but without MH.