Mean platelet volume in brucellosis: correlation between brucella standard serum agglutination test results, platelet count, and C-reactive protein.

BACKGROUND: Secondary traumatic brain injury (TBI) is injury to the brain following primary TBI because of neuroinflammation as consequences of neuronal and glial cell injury which cause release of various inflammation cytokine and chemokine. Biomarker examination to predict the severity of secondary TBI is important to provide appropriate treatment to the patient. This article reviews possibility several common laboratory parameter such as monocyte-to-lymphocyte ratio (MLR), mean platelet volume-to-platelet count (PC) ratio (MPV-PCR), c-reactive protein (CRP), and erythrocyte sedimentation rate (ESR) to predict severity of secondary TBI. LITERATURE REVIEW: TBI activates microglia which increase infiltration and proliferation of monocyte. Neuroinflammation also increases thrombopoiesis which leads to increase megakaryocytes production. In the other hand, due to disruption of brain blood vessels because of trauma, coagulation cascade is also activated and leads to consumptive coagulopathy. These are reflected as high monocyte count, low PC, and high MPV. Lymphocyte count is reported low in TBI especially in poor outcome patients. CRP is an acute phase reactant that increased in inflammation condition. In TBI, increased production of Interleukin-6 leads to increase CRP production. In head injured patients, ESR level does not increase significantly in the acute phase of inflammation but last longer when compared to CRP. CONCLUSION: MLR, MPV-PCR, CRP, and ESR could be predictor of severity in secondary TBI.

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Mean Platelet Volume/Platelet Count Ratio as a Diagnostic Marker in Children with Acute Appendicitis

Journal of Dr Behcet Uz Children s Hospital ◽

10.5222/buchd.2021.72335 ◽

2021 ◽

Author(s):

İnanç Karakoyun ◽

Mustafa Onur Öztan

Keyword(s):

Platelet Count ◽

Acute Appendicitis ◽

Mean Platelet Volume ◽

Diagnostic Value ◽

Complicated Appendicitis ◽

C Reactive Protein ◽

Platelet Volume ◽

Reactive Protein ◽

Uncomplicated Appendicitis ◽

Wbc Count

Objective: The objective of this research was to evaluate the diagnostic value of mean platelet volume/platelet count (MPV/PC) ratio in pediatric acute appendicitis. Methods: This retrospective study included a total of 310 patients, 176 in the uncomplicated appendicitis group, 80 in the complicated appendicitis group, and 54 in the nonspecific abdominal pain (NSAP) group. C-reactive protein (CRP) level, white blood cell (WBC) count, absolute neutrophil count (ANC), MPV, PC, and MPV/PC ratio were compared between the groups. Results: WBC and ANC levels differed significantly between the groups (P<0.001 in all pairwise comparisons). CRP levels in the complicated appendicitis group were higher than in the NSAP and uncomplicated appendicitis groups (P<0.001 for both comparisons). There was a negative correlation between MPV and PC (r= -0.434, P<0.001). Both PC and MPV/PC ratio were able to distinguish cases of complicated appendicitis from NSAP (P=0.047 and P=0.045, respectively) and from cases of uncomplicated appendicitis (P=0.010 and P=0.045, respectively). Areas under the ROC curve for CRP, WBC, ANC, MPV, PC, and MPV/PC ratio were 0.640, 0.690, 0.727, 0.553, 0.541, and 0.546, respectively. Conclusion: According to the results of our study, MPV/PC ratio can be used in addition to the conventional markers to discriminate cases of complicated appendicitis.

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