Evaluation of the accuracy of immature granulocyte percentage in predicting pediatric serious bacterial infection

Immature Granulocyte Percentage as an Early Predictor of Necrosis in Volvulus

AIM

Volvulus is a disease characterized by the abnormal twisting of a gaseous distension of the loop of the intestine around itself. Colonic volvulus is the third common cause of colonic obstruction. The study aimed to determine whether the percentage of immature granulocytes is a marker of early necrosis in the volvulus.

METHODS

Demographic characteristics of the cases were collected in the study. In addition, age, gender, white blood cell count, immature granulocyte count, immature granulocyte percentage, platelet lymphocyte ratio, and neutrophil-lymphocyte ratio were compared between groups with and without necrosis in terms of treatment.

RESULTS

The effectiveness of immature granulocyte percentage (IG%) and IG markers were statistically significant in predicting necrosis. The AUC was the highest for IG (0.820, 95% CI: 0.586-1), followed by IG% (0.820, 95% CI: 0.617-1). The optimal cut-off value for the IG was 0.65, with a sensitivity of 76.2% and specificity of 85.7% (P = 0.013). The optimal cut-off value for the IG% was 0.065, with a sensitivity of 85.7% and specificity of 71.4% (0.018).

CONCLUSION

IG% and IG count were found to be useful for predicting necrosis in patients with volvulus.

Determining the effectiveness of the immature granulocyte percentage and systemic immune-inflammation index in predicting acute pyelonephritis

AIM

The most serious form of urinary tract infection (UTI) is acute pyelonephritis (APN), which can result in bacteremia and renal scarring. This study aims to show the roles that the systemic immune-inflammation index (SII) and the immature granulocyte (IG) percentage play in predicting APN in pediatric patients by comparing them with traditional infection markers. By illustrating a significant relationship between APN, the IG percentage, and the SII, the study's contributions to the differential diagnosis of UTI can promote a rapid and appropriate treatment of APN.

MATERIAL AND METHODS

The present study included 522 pediatric patients. The patients were divided into two groups: (I) an APN group (n = 236) and (II) a lower UTI group (n = 286).

RESULTS

The mean age of the sample was 5.05 ± 4.7 years. According to the most appropriate cutoff values, the findings showed that among all the parameters, C-reactive protein (CRP) and the IG percentage had the highest sensitivities, specificities, and predictive values for predicting APN.

CONCLUSION

This study emphasizes the support features of the IG percentage and the SII in the diagnosis of APN in pediatric patients, a topic that has recently attracted attention. The findings indicated that among all of the parameters behind CRP, the IG percentage and the SII had the highest sensitivities, specificities, and predictive values for forecasting APN. It is worth noting that these methods can be applied without additional costs or burdens to the patient.

Potential and promising marker for serious bacterial infections in children: Delta neutrophil index

AIM

This study aimed to evaluate the usefulness and accuracy of the delta neutrophil index (DNI), an index expressing the number of immature granulocytes as a proportion of the total, as an inflammatory marker in predicting serious bacterial infections (SBIs).

METHODS

Paediatric patients admitted to our hospital with fever were divided into four groups: SBI, non-SBI, COVID-19 and control group. White blood cell count, absolute neutrophil count, C-reactive protein and the DNI were recorded, and their accuracy in predicting SBI was evaluated.

RESULTS

Mean DNI was 4.96 ± 8.38 in the SBI group (150 patients), 0.67 ± 1.68 in the non-SBI group (397 patients), 0.29 ± 0.99 in the COVID-19 group (112 patients) and 0.14 ± 0.21 in the control group (102 patients). The DNI was significantly higher in the SBI group compared with the non-SBI (P < 0.001); the non-SBI group also had higher levels than the COVID-19 group (P = 0.005). One percent increase in the DNI increased the SBI rate 1.36 times (odds ratio 1.36 (95% confidence interval 1.23-1.49), P < 0.001). Based on the determined cut-off value (>2.5%), the DNI (odds ratio 6.27 (95% confidence interval 3.85-10.21), P < 0.001) significantly predicted SBIs with 90.4% specificity and 47.7% sensitivity.

CONCLUSIONS

SBIs in childrenare associated with an increase in DNI levels. Compared to other biomarkers, the DNI had higher specificity in predicting SBIs. The DNI may also be usefulin differentiating bacterial and non-bacterial infections in individualclinical syndromes. Currently, there is no evidence that serum DNI aids indifferentiating COVID-19 and upper respiratory tract infection.

An Assessment on the Effectiveness of the Immature Granulocyte Percentage in Predicting Internal Organ Involvement Among Children With Henoch-Schönlein Purpura

Henoch-Schönlein purpura (HSP) is the most common childhood systemic vasculitis. The present study aims to investigate the effectiveness of the immature granulocyte (IG) percentage as a new marker for predicting internal organ involvement in HSP. This study included 75 patients below 18 years old who were diagnosed with HSP. The mean age was 7.48±2.77 years. The male/female ratio was 1.14. The findings showed that 35 (46.7%) of the patients had an internal organ involvement. The mean IG percentage was 0.88±0.68 among the patient group with HSP internal organ involvement, while it was 0.31±0.15 in the group without internal organ involvement, and a significant difference was determined between the 2 groups (P=0.000). The findings showed that the patients with renal involvement had the highest mean IG percentage (IG; 1.00±0.21). When the cutoff value for the IG percentage was specified as 0.45 to predict internal organ involvement, the sensitivity was 77.1%, and the specificity was 85%. In this study, the findings showed that IG percentage increased among patients with internal organ involvement in HSP and that its sensitivity, specificity, and predictive values were higher in predicting internal organ involvement compared with other markers.

Is immature granulocyte a new predictor in the diagnosis of peptic ulcer perforation?

<b>Introduction:</b> Peptic ulcer perforation (PUP) requires immediate treatment. Immature granulocyte (IG) takes part in the inflammation process and is a biomarker which can be easily tested in peripheral venous blood. </br></br> <b>Aim:</b> This study demonstrates that IG is a convenient biomarker in the diagnosis of PUP. </br></br> <b> Material and methods: </b> Medical records of patients treated in the years 2018–2020 were analysed retrospectively. The study recognized three groups of patients: 42 PUD patients (Group 1), 42 PUP patients (Group 2) and 45 individuals acting as a healthy control (HC, Group 3). Surgical repair was performed in all patients from the PUP group. Differences between the groups were analysed statistically. The receiver operating characteristic curve (ROC) was calculated in order to predict the likelihood of PUP diagnosis based on the immature granulocyte count (IGC) and immature granulocyte percentage (IG%). </br></br> <b> Results:</b> The average IGC was high in group 1 and group 2, while the IG levels remained low in the HC group A statistically significant difference between the groups was confirmed (mean values, respectively; 0.05 [0.12], 0.04 [0.06], 0.03 [0.03], and P = 0.001). The average value of IG% was high in group 1 and group 2 but remained low in the HC group A statistically significant difference between the groups was confirmed (mean values, respectively; 1.62 ± 0.41, 0.68 ± 0.22, 0.37 ± 0.55, and P = 0.003). The following parameters were calculated for IGC and IG%: AUC: 0.637; sensitivity: 61.9%; specificity: 57.1%; P = 0.031, AUC: 0.693; sensitivity: 61.9%; specificity: 64.3%; P = 0.02), respectively. </br></br> <b>Results:</b> IG is convenient as a diagnostic biomarker in PUP patients admitted to the emergency department.