scholarly journals The Role of Mean Platelet Volume as a Predictor of Mortality in Critically Ill Patients: A Systematic Review and Meta-Analysis

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Pattraporn Tajarernmuang ◽  
Arintaya Phrommintikul ◽  
Atikun Limsukon ◽  
Chaicharn Pothirat ◽  
Kaweesak Chittawatanarat

Background. An increase in the mean platelet volume (MPV) has been proposed as a novel prognostic indicator in critically ill patients.Objective. We conducted a systematic review and meta-analysis to determine whether there is an association between MPV and mortality in critically ill patients.Methods. We did electronic search in Medline, Scopus, and Embase up to November 2015.Results. Eleven observational studies, involving 3724 patients, were included. The values of initial MPV in nonsurvivors and survivors were not different, with the mean difference with 95% confident interval (95% CI) being 0.17 (95% CI: −0.04, 0.38;p=0.112). However, after small sample studies were excluded in sensitivity analysis, the pooling mean difference of MPV was 0.32 (95% CI: 0.04, 0.60;p=0.03). In addition, the MPV was observed to be significantly higher in nonsurvivor groups after the third day of admission. On the subgroup analysis, although patient types (sepsis or mixed ICU) and study type (prospective or retrospective study) did not show any significant difference between groups, the difference of MPV was significantly difference on the unit which had mortality up to 30%.Conclusions. Initial values of MPV might not be used as a prognostic marker of mortality in critically ill patients. Subsequent values of MPV after the 3rd day and the lower mortality rate unit might be useful. However, the heterogeneity between studies is high.

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Ali Amiri ◽  
Setareh Khosravi ◽  
Shiva Torabi ◽  
Hadi Golshekan ◽  
Fan Qi

Objective: In this meta-analysis and systematic review, we aimed to evaluate the effects of the TISADs to facilitates anchorage reinforcement. Methods:  PubMed, Cochrane Library, Embase, ISI, Scopus, Web of Science, LILACS, BBO, OpenGrey, and Google Scholar, were used from the electronic databases until 2020 perform systematic literature. Two reviewers extracted data blindly and independently from various abstracts as well as full texts of articles they considered for data extraction. Using the Cochrane collaboration's tool, we evaluated the publications' quality. Then, we computed the mean difference of TISADs and conventional anchorage groups with a confidence interval (CI) of 95%, restricted maximum likelihood (REML), and random effect model of the mesial movement of molars and their tipping. Moreover, we employed Stata/MP 16 that has been considered the most rapid version of Stata for evaluating meta-analysis. Results: According to our electronic searches, 134 topics and abstracts with potential relevance were identified according to the research design. Finally, five publications matched the required inclusion criteria of the study. In addition, the Cochrane collaboration instrument exhibited all studies with low to moderate biases. Also, the mean difference of mesial molar movement showed less anchorage loss in the TISADs group vs. the controls, and a significant difference between these two groups (MD= -1.74 with a CI of 95%, -2.76, -0.71. P = 0.00). Conclusions: TISADs can reduce treatment time, and TISADs are more effective in enables the anchorage than other methods and higher tipping in the TISADs.


2021 ◽  
Vol 8 (25) ◽  
pp. 2168-2172
Author(s):  
Anjali Sharma ◽  
Manju Kumari ◽  
Heena Heena ◽  
Mukul Singh ◽  
Sunil Ranga ◽  
...  

BACKGROUND Modern automated analysers provide various haematological parameters which have gained a lot of clinical significance. Of these, platelet indices are the most recent one which need to be explored in various diseases. The present study was conducted to evaluate the significance of platelet indices, neutrophil-tolymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR), and mean platelet volume–to-platelet count in critically ill patients. METHODS This is a prospective study carried out in emergency laboratory of pathology department. 100 patients of intensive care units (ICU) and non-intensive care units (Non-ICU) visiting to the emergency department were included in the study. Fortyfive age and sex matched control patients were taken. The ethylenediamine tetra acetic acid (EDTA) blood sample was analysed on automated analyser. Platelet indices, NLR, MLR and mean platelet volume to platelet counts were calculated in ICU, Non-ICU and control groups. All these values were compared among these groups. RESULTS The study included 400 patients (200 critically ill and 200 non-critically ill) and 45 healthy controls from normal population. The male to female ratio in critically ill and non-critically ill patients was 1.3 : 1 (113 : 87) and 1.08 : 1 (104 : 96) respectively. The critically ill patients had significant leucocytosis (P = 0.019) with neutrophilia (P = 0.005) and lymphopenia (P = 0.048) when compared to noncritically ill patients. There was a significant difference of NLR (P = 0.010), MLR (P = 0.027) and MPV : Platelet count (P = 0.045) in these two groups. However, platelet count and platelet indices were not showing any significant difference in these groups. CONCLUSIONS In the era of modern auto analysers, we should try to utilize the maximum information that could be provided by these machines in forms of various indices and ratios. The present study highlights that neutrophilic leucocytosis with lymphopenia is seen in critically ill patients when compared to non-critically ill patients and normal control population. NLR, MLR and MPV to platelet ratios are also of great importance whereas platelet count and platelet indices are always not helpful in categorization of severity of the patient’s condition. KEYWORDS Intensive Care Unit Patients, Neutrophil Lymphocyte Ratio, Monocyte Lymphocyte Ratio, Mean Platelet Volume


Critical Care ◽  
2021 ◽  
Vol 25 (1) ◽  
Author(s):  
Eleni Papoutsi ◽  
Vassilis G. Giannakoulis ◽  
Eleni Xourgia ◽  
Christina Routsi ◽  
Anastasia Kotanidou ◽  
...  

Abstract Background Although several international guidelines recommend early over late intubation of patients with severe coronavirus disease 2019 (COVID-19), this issue is still controversial. We aimed to investigate the effect (if any) of timing of intubation on clinical outcomes of critically ill patients with COVID-19 by carrying out a systematic review and meta-analysis. Methods PubMed and Scopus were systematically searched, while references and preprint servers were explored, for relevant articles up to December 26, 2020, to identify studies which reported on mortality and/or morbidity of patients with COVID-19 undergoing early versus late intubation. “Early” was defined as intubation within 24 h from intensive care unit (ICU) admission, while “late” as intubation at any time after 24 h of ICU admission. All-cause mortality and duration of mechanical ventilation (MV) were the primary outcomes of the meta-analysis. Pooled risk ratio (RR), pooled mean difference (MD) and 95% confidence intervals (CI) were calculated using a random effects model. The meta-analysis was registered with PROSPERO (CRD42020222147). Results A total of 12 studies, involving 8944 critically ill patients with COVID-19, were included. There was no statistically detectable difference on all-cause mortality between patients undergoing early versus late intubation (3981 deaths; 45.4% versus 39.1%; RR 1.07, 95% CI 0.99–1.15, p = 0.08). This was also the case for duration of MV (1892 patients; MD − 0.58 days, 95% CI − 3.06 to 1.89 days, p = 0.65). In a sensitivity analysis using an alternate definition of early/late intubation, intubation without versus with a prior trial of high-flow nasal cannula or noninvasive mechanical ventilation was still not associated with a statistically detectable difference on all-cause mortality (1128 deaths; 48.9% versus 42.5%; RR 1.11, 95% CI 0.99–1.25, p = 0.08). Conclusions The synthesized evidence suggests that timing of intubation may have no effect on mortality and morbidity of critically ill patients with COVID-19. These results might justify a wait-and-see approach, which may lead to fewer intubations. Relevant guidelines may therefore need to be updated.


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