A silent scream in the pediatric emergency department: child abuse and neglect.

Child abuse and neglect includes any behavior that harms the child or hinders the child's development. The aim of this study was to determine the demographic and clinical characteristics of patients with suspected child abuse or neglect in the pediatric emergency department. Between July 2017 and July 2022, patients admitted to our pediatric emergency department and consulted to the medical social services unit with a preliminary diagnosis of neglect and/or abuse were retrospectively scanned through the registry system. The patients were divided into five groups according to their victimization: physical, sexual, and emotional abuse; neglect; and medical child abuse (MCA)-Munchausen by proxy. A total of 371 children were included in the study. Two hundred twenty-two (59.8%) of the patients were female and the median age was 161 months [IQR (46-192)]. Then, 56.3% of the patients were in the adolescent age group. The most common admission time period was between 16.00 and 24.00 (n 163, 43.9%). Then, 24.2% of the patients were exposed to physical abuse, 8.8% to sexual abuse, 26.1% to emotional abuse, 50.4% to neglect, and 3.2% to MCA. One hundred eight (29.1%) patients were followed up as inpatients in the pediatric intensive care unit. Four of the patients (1%) had out-of-hospital cardiac arrest, and the deaths were in patients under 2 years of age.  Conclusion: Pediatric emergency departments are one of the important units visited by child maltreatment patients. Victimized children may reflect their silent screams with various clinical presentations. Infants are at the greatest risk of suffering serious or fatal injuries. Health professionals working in the emergency department have an important role in detecting, treating, and preventing recurrence of child neglect and abuse. What is Known: • The pediatric emergency department is an important entry point in the health care system for children who experience maltreatment. • It has a wide spectrum of physical, sexual, emotional abuse and neglect. What is New: • A high index of suspicion is required to diagnose cases of child maltreatment. • Infants are at the greatest risk of suffering serious or fatal injuries.

Emergency medical service use at a pediatric center in Turkey, during the COVID-19 pandemic period.

AIM: This study aimed to evaluate aspects of pediatric patients presenting to a hospital in Turkey via emergency ambulance services, including incidence of visits to the hospital, acuity of illness and most common diagnoses, during the one-year period before and after the onset of the coronavrrus dsease 2019 (COVID-19) pandemic. METHODS: This was a retrospective and single center analysis of children, transported by Emergency Medical Services to the Emergency Department (ED) of a children's hospital in Turkey, between 10 March 2019 and 11 March 2021. RESULTS: Percentage of high acuity group (68.1% vs.76.9%) during pandemic period was significantly lower than prepandemic period (p < 0.001). On the contrary, the percentage of patients using emergency ambulance service with a low level of acuity increased during the pandemic period compared to the prepandemic period (31.9% vs. 23.1%) (p < 0.001). A significant decrease was observed in the cases of lower respiratory tract infections, febrile status epilepticus and excessive alcohol use during the pandemic period. No significant differences were found hospitalizations requiring PICU and mortality in ED during the pandemic period. CONCLUSION: During the COVID-19 pandemic; also, a decrease in admissions was observed for those with high-risk conditions. On the contrary, an increase was detected in patients with low acuity levels. Efforts should be made to ensure access to safe and quality emergency care during the pandemic.

Evaluation of Neurosurgical Emergencies in the Pediatric Emergency Department: Clinical Warning Signs.

BACKGROUND: We aimed to evaluate the patients who underwent neuroimaging with suspicion of neurosurgery pathology and identify the clinical warning signs for the early recognition of neurosurgical emergencies. METHODS: Patients aged one month to 18 years who underwent neuroimaging with a preliminary diagnosis of intracranial pathology requiring emergency surgery and symptom duration less than one month were included in the study. Patients were divided into three groups according to their definitive diagnosis as neurosurgical emergencies, neurological emergencies, and nonurgents. RESULTS: A total of 140 patients were included in the study (the median age was 8 [interquartile range IQR 3 to 13] years and 52.8% were male). Neurosurgery emergency group and neurological emergency group were significantly younger than the nonurgent group (P < 0.001). Vomiting, meningeal irritation findings, and papilledema (grade 2 and above) were more common in the neurosurgical emergency group (P 0.029, 0.023, and < 0.001, respectively). For neurosurgical emergencies, in the presence of papilledema (grade 2 and above) and focal neurological deficit, the specificity was 99.2%, positive predictive value (PPV) 83.3%, negative predictive value (NPV) 88.1%, and odds ratio (OR) 36.8 (P < 0.001, confidence interval [CI] 4.04 to 336.0); in the presence of altered consciousness and focal neurological deficit, the specificity was 97.5%, PPV 50%, NPV 86.6%, and OR 6.4 (P = 0.014, CI 1.20 to 34.4). CONCLUSIONS: Younger age, presence of vomiting, signs of meningeal irritation, papilledema grade 2 and above, and altered consciousness are the crucial "warning signs" of a potential neurosurgical emergency.

Dyskinesia due to mexiletine overdose: a rare presentation.

BACKGROUND: Mexiletine, a class IB antiarrhythmic, is a structural analog of lidocaine. Our knowledge of mexiletine overdose is based on lidocaine overdose reports. Only a few cases of mexiletine overdose have been reported, including fatal overdoses. Mexiletine toxicity primarily affects the central nervous, cardiovascular, and gastrointestinal systems. CASE: A 16-year-old female was brought to our hospital by ambulance after taking an unknown dose of mexiletine in a suicide attempt. Ventricular fibrillation developed while in the ambulance; cardiopulmonary resuscitation was started and spontaneous circulation returned within 1 min. The patient had been taking oral mexiletine for 1 month to treat primary erythromelalgia. Her vital signs were normal, but she was unconscious. Following gastric lavage she was transferred to the pediatric intensive care unit. Midazolam and levetiracetam were required due to uncontrolled seizures. During the first hour of hospitalization, severe dyskinesia characterized by abnormal involuntary large hyperkinetic movements in all 4 extremities was observed and successfully treated with 2 doses of intravenous biperiden. The patient was discharged on day 6 of hospitalization. CONCLUSIONS: Mexiletine overdose can be life-threatening. In addition to rapid and effective resuscitation, rapid identification and management of cardiovascular and central nervous system manifestations are key to preventing morbidity and mortality. The presented case had severe dyskinesia that was successfully treated with repeated doses of biperiden. Biperiden did not cause arrhythmia. Based on the presented case, we think biperiden should be considered for the treatment of movement disorders in cases of mexiletine overdose.

An analysis of cardiology consultation requests in infants presented to the pediatric emergency department of a tertiary children's hospital.

INTRODUCTION: Cardiological emergencies are reported to constitute almost 15% of all emergency department visits. This study aimed to characterize the main signs and symptoms of the infants that necessitated pediatric cardiology consultation and to analyze the characteristics of patients diagnosed with a cardiological disorder. MATERIAL AND METHODS: Patients aged 1 month to 1 year who were consulted to the pediatric cardiology service during a 4-year period were retrospectively evaluated. Patients' age, sex, nationality, complaints at PED, physical examination findings, reason for echocardiography (echo) and final diagnosis were recorded from the hospital medical record system for further analysis. Patients were divided into two groups according to the severity of the echo findings (patients with significant cardiovascular issues and patients without significant cardiovascular issues). RESULTS: Of the 200 patients included in the study, 19 were in the significant cardiovascular issues, and 181 were in the without significant cardiovascular issue group. The leading complaints of the patients who were consulted to cardiology were cyanosis (22.5%), seizure (22.5%), cough (22%), and fever (19.5%). In emergency presentations, jaundice (16%), nutritional problems (21%), and cardiomegaly (21%) on x-rays were higher in patients with significant cardiovascular issues (p < 0.05). CONCLUSION: In conclusion, congenital heart disease is usually diagnosed in the neonatal period, but some patients may be missed due to a variety of symptoms and findings. Infants with feeding problems and jaundice, especially those with cardiomegaly on chest radiographs, should be carefully evaluated for underlying serious congenital heart disease.

Attention to diseases that re-emerge due to refusal of vitamin K: an infant case.

Intramuscular vitamin K injection is recommended for all newborns to prevent bleeding. However, the number of parents who reject vitamin K is at an increase. We present a 1-month girl who presented with haemorrhagic shock due to extraordinary intra-thoracic bleeding. The patient was treated with thoracentesis and blood transfusion. Parents were informed the about the benefits of Vitamin K and they were convinced to continue a routine immunization programme.

Evaluation of Acute Ataxia in the Pediatric Emergency Department: Etiologies and Red Flags.

BACKGROUND: We aimed to evaluate patients with acute ataxia and to determine the warning clinical factors in the early prediction of neurological emergencies. METHOD: Patients with a history of balance and gait coordination disorder and clinically diagnosed as acute ataxia in pediatric emergency department were included in the study. As a result of final diagnosis, the characteristics of patients with and without clinically urgent neurological pathology (CUNP) were compared. CUNP was defined as any nervous system disorder requiring early diagnosis and prompt medical or surgical treatment and/or intensive care unit admission to prevent disabling or life-threatening evolution. RESULTS: Eighty-eight patients with a median age of 5 years were included in the study (37 [42%] patients with CUNP and 51 [58%] without CUNP). In the CUNP group, the median age of patients and symptom duration were significantly higher (P < 0.001 and P = 0.011, respectively). The most common etiologies were acute post/parainfectious cerebellar ataxias (n = 40 [45.4%]), acute cerebellitis (n = 9 [10.2%]), and Guillain-Barré syndrome (n = 8 [9%]). Hyporeflexia/areflexia and dysmetria were associated with a higher risk of CUNP. Headache, loss of consciousness, and visual dysfunction were the findings appearing exclusively in patients with CUNP. CONCLUSIONS: The most common etiologies in acute ataxia are benign and transient, whereas life-threatening conditions may occur rarely and may require urgent intervention. Older age; prolonged symptom duration; focal neurological deficits such as hemiparesis, hyporeflexia, and visual impairment; and nonspecific findings such as loss of consciousness and headache are the most striking "red flags" of a potential neurological emergency and should alert clinicians to CUNP.

Success of the acute renal angina index in the early prediction of acute kidney injury in the emergency department.

INTRODUCTION: It is mentioned that the acute renal angina index (aRAI), a new concept, can be used in emergency departments to calculate and accurately predict the risk of developing acute kidney injury (AKI). The aims of the study included: to evaluate the predictive performance of the aRAI (AKI risk classification tool) in predicting AKI in the pediatric emergency department. METHOD: Patients who met the criteria for systemic inflammatory response syndrome were examined. AKI was defined with creatinine N1.5× baseline 24-72 hours after hospitalization. aRAI and original RAI scores were calculated for patients and were shown as renal angina positive (RA+) above a population-derived threshold. The performance of aRAI in predicting AKI compared to changes in creatinine and original RAI was evaluated. RESULTS: In total, 241 eligible subjects were enrolled. The median age of the patients was 17 months (min-max 1-192). AKI developed in 60 (24.8%) of the patients. According to the aRAI, 76 (31.5%) of 241 patients were RA(+). The aRAI had an NPV of 1.00 and an AUC of 0.948 (0.914-0.983) for the prediction of AKI. Sensitivity was 95% for the aRAI as compared to 48% for an elevation in SCr noted to be at least two times greater than the baseline while in the PED and 61% for original RAI. CONCLUSIONS: The aRAI is easily computable, does not depend on complex computational or derivation methods, and is universally accessible. We confirm and extend the findings of previous study reporting the performance of RAI for early prediction of AKI.

A Novel Marker for Predicting Fulminant Myocarditis: Systemic Immune-Inflammation Index.

In myocarditis, the search for effective and appropriate prognostic biomarkers can help clinicians identify high-risk patients in a timely manner and make better medical decisions in clinical practice. The prognostic value of systemic immune-inflammatory index (SII), an innovate biomarker of inflammation, in fulminant myocarditis in children has not been assessed. This study aims to (1) determine the effect of SII and other inflammatory markers on the prognosis of patients with myocarditis, and (2) characterize other factors affecting adverse outcomes in myocarditis. All patients aged between 1 months and 18 years who admitted to Pediatric Emergency Department between January 1, 2015 and October 1, 2021 and were diagnosed with myocarditis were retrospectively analyzed. 106 Eligible subjects were enrolled (67% male, 12.5 years (IQR 6-16). Fulminant myocarditis developed in 16 (15%) of the patients. The median SII was 1927 (1147.75-3610.25) in the fulminant myocarditis group and 351 (251.75-531.25) in the non-fulminant group (p < 0.001). In estimation of fulminant myocarditis, AUC was 0.87 for WBC [95% confidence interval (CI) 0.72-1.00, p = 0.002], 0.94 for ANC (95% CI 0.85-1.00), p = 0.000), 0.92 for SII (95% CI 0.82-1.00, p = 0.000). Spearman's correlation analysis showed a significant negative correlation between SII and LVEF (r = 0.576, p < 0.001). The highest AUC values were associated with ANC, SII, and WBC levels to predict fulminant myocarditis. SII, a readily available biomarker from routine blood parameters, allows early recognition of negative outcomes and can independently predict the prognosis of myocarditis in children.

Benign acute childhood myositis: Factors associated with muscle symptoms and resolution.

BACKGROUND: Benign acute childhood myositis (BACM) is associated with several viral infections. The aim of this study was to evaluate the progression of myositis symptoms, laboratory findings and oseltamivir treatment in children with influenza- and non-influenza-associated BACM. METHODS: Patients aged 0-18 years old, admitted to the pediatric emergency department in the seasonal influenza period between 2018 and 2020 were retrospectively analyzed. Patients with acute onset calf tenderness, pain, difficulty in walking and elevated serum creatine phosphokinase were included and were grouped according to influenza rapid test kit results as influenza (A and B) positive, and influenza negative. The time to symptom resolution, laboratory data and the oseltamivir treatment were compared between the groups. RESULTS: There were 94 patients (67 male, 27 female) with a mean age of 77 ± 22 months. Influenza A was detected in 21, influenza B in 27, and neither were detected in 46 patients. Time to symptom resolution of BACM was shorter in the influenza-positive patients than in influenza-negative patients (2.9 ± 1.4 days and 3.5 ± 1.5 days, respectively, P = 0.027). Oseltamivir did not reduce the symptom resolution time in influenza patients. All children had normal hemoglobin and platelet counts, elevated creatine phosphokinase and 76% of them had leukopenia. Neither clinical recurrence nor metabolic disease were reported. CONCLUSION: Symptoms of BACM tended to resolve slightly earlier in influenza-positive patients and the duration of symptoms was not affected by oseltamivir treatment.

Utility of the systemic immune-inflammation index to predict serious bacterial infections in infants with fever without a source.

INTRODUCTION: This study analyzed the utility of the systemic immune-inflammation index (SII) in predicting serious bacterial infections (SBIs) in infants with fever without a source (FWS). METHODS: Infants (aged 1-4 months) evaluated in the pediatric emergency department for FWS were divided into two groups: with SBI and without SBI. The efficacy of inflammatory markers in predicting SBI was compared. RESULTS: The study included 223 infants with a mean age of 76.65 ± 25.42 days; 62 (27.8%) of them were included in the SBI group, and all of them were diagnosed with a urinary tract infection (UTI). The hospitalization rate and length of hospital stay were significantly higher in UTI patients (p < 0.001 for each). The mean SII was 795.76 ± 475.85 in the SBI group and 318.24 ± 300.70 in the non-SBI group, and there was a significant difference between the groups (p < 0.001). In diagnosis of SBI, the area under the curve values were found to be 0.89 [95% confidence interval (CI): 0.85-0.94] for C-reactive protein (CRP), 0.86 (95% CI: 0.81-0.91) for absolute neutrophil count (ANC), 0.84 (95% CI: 0.78-0.89) for the SII, and 0.81 (95% CI: 0.74-0.87) for WBC. In the multivariate logistic regression analysis, high CRP and SII values were found to be predictive factors for UTI without bacteremia (p < 0.001 and p = 0.008, respectively). CONCLUSION: We found that high CRP and SII values could be predictive for UTI without bacteremia in infants with FWS. The SII may be preferred because it can be easily calculated using the hemogram results, is not accompanied by extra costs, and does not require further blood collection.

COVID-19 Infection in Well-Appearing 30- to 90-Day-Old Infants with Fever without a Source.

Fever without a source (FWS) is common clinical status in the young infants. The aim of this study was to evaluate the clinical and laboratory findings of coronavirus disease (COVID-19) infection in well-appearing infants with FWS. Well-appearing febrile infants between 30 and 90 days who were evaluated as FWS in the pediatric emergency department and tested for COVID-19 were divided into two groups: COVID-19 (+) and (-). The clinical and laboratory findings of the patients were compared. The study included 95 febrile infants with FWS, and the mean age was 59.62 ± 16.82 days. The nasopharyngeal COVID-19 polymerase chain reaction test results of 29/95 (30.5%) patients were positive, while 66/95 (69.5%) were negative. The complaints of irritability and nasal congestion were found to be significantly more common in COVID-19-positive patients (p = 0.04 and p = 0.041, respectively). The hospitalization rate (p = 0.009), length of hospital stay (p = 0.026), initiation of antibiotic treatment (p < 0.001) and duration of antibiotic treatment (p = 0.036) were significantly lower in the COVID-19 (+) patients. The C-reactive protein (CRP, p < 0.001), absolute neutrophil count (ANC, p < 0.001), absolute lymphocyte count (ALC, p = 0.015), white blood cell (WBC, p < 0.001) and systemic immune-inflammation index (SII, p < 0.001) were found to be significantly lower in the COVID-19 (+) patient group. There was no significant difference between the groups in terms of neutropenia, lymphopenia or leukopenia.COVID-19 infection may present as an FWS. During the pandemic period, testing for COVID-19 among infants who were evaluated as FWS may reduce unnecessary hospitalizations and antibiotic treatments, and shorten hospital stays and duration of antibiotics.

Is the Early Diagnosis of Pediatric Stroke Possible in the Emergency Department?

BACKGROUND AND PURPOSE: Pediatric stroke is a neurological emergency. Knowing the predictive clinical markers for childhood stroke will help in early diagnosis and patient management. This study aims to (1) evaluate patients admitted to the pediatric emergency department (PED) with acute neurological signs and/or symptoms who underwent neuroimaging and (2) determine the clinical warning signs for the early recognition of stroke. METHODS: One hundred one patients aged 1 month to 18 years who were admitted with stroke-related neurological signs and symptoms and underwent neuroimaging in the PED were retrospectively analyzed using the file record system. As a result of these imaging tests, the characteristics of patients with stroke and nonstroke were compared. RESULTS: The mean age of the 92 included patients was 10.7 (SD, 4.5) years. Among the admission symptoms of the patients, a significant difference was observed only in terms of speech disorder, whereas a significant difference was found in the examination results for altered consciousness and dysarthria. The incidences of hemiplegia and hemiparesis were higher in the stroke group, but they were not statistically significant. The median duration of time from symptom onset to PED admission was 240 minutes (interquartile range, 30-1440 minutes). The mean time from PED admission to magnetic resonance imaging in the stroke group was 2.3 (SD, 0.7) hours, which was significantly shorter than for the nonstroke group (4.9 [SD, 1.2] hours, P = 0.002). CONCLUSIONS: Childhood stroke is a neurological emergency that requires a multidisciplinary approach. Early stroke diagnosis is vital for treatment and prognosis. With respect to sudden neurological deficits, particularly dysarthria, altered consciousness, hemiplegia, and hemiparesis, should alert clinicians to stroke. In addition, interdepartmental cooperation is essential both in the rapid recognition of stroke and the treatment and follow-up processes.

Evaluation of changes in pediatric emergency department utilization during COVID-19 pandemic.

BACKGROUND: During the coronavirus disease 2019 (COVID-19) pandemic period, the use of emergency services with pediatric non-COVID patients has decreased considerably. We aimed to examine whether there was a change in the demographic data, triage profile, causes, management, and cost of pediatric emergency department (PED) visits of non-COVID patients during the pandemic period. METHODS: This study was a retrospective, single-center, observational comparative study that was conducted at the PED. Patient records were examined during "the pandemic spring" and the same period of the previous year. Patient demographics, waiting time, and outcome of the PED visit were analyzed in the entire population of children admitted to the PED during the study period, whereas more precise data such as the reason for PED use, duration of symptoms, urgency levels according to the Emergency Severity Index (ESI), final diagnosis, management, and cost of patient care were analyzed in a sample of admitted patients. We used the chi-square test, Fisher's exact test, and Mann-Whitney U test for statistical analyses. RESULTS: A total of 62,593 PED visits occurred. During the pandemic period, PED visits showed a decrease of 55.8% compared to the previous year. Patients included in the sampling study group were selected using a systematic random sampling method. The median waiting time during the pandemic period was significantly shorter than the previous year (median 14 min [IQR: 5-32] vs. median 5 min [IQR: 2-16]; p<0.001). The median duration of symptoms was 1 day (1-2) in both groups. Emergency Severity Index (ESI) levels I, II, and III showed a significant increase (27.7% vs. 37.3%) in triage scoring compared to levels IV and V (72.3% vs. 62.7%) during the pandemic period (p<0.001). The median cost per patient during the pandemic period was statistically higher compared to the previous year ($19.57 [19.57-40.50] vs. $25.34 [31.50-52.01]; p<0.001). Overall costs during the pandemic period had a 1.6-fold decline. CONCLUSION: We highlighted the changes in an ordinary PED profile during an extraordinary period. A shift in ESI levels in a more emergent direction was observed. While the number of nonurgent patients, especially those with infections, decreased, the rates of surgical cases, acute neurological and heart diseases, home accidents, and poisoning increased relative to the pre-pandemic period.

Evaluation of Epidemiological, Demographic, Clinical Characteristics and Laboratory Findings of COVID-19 in the Pediatric Emergency Department.

BACKGROUND: The aim of this study was to evaluate the epidemiological, demographic, clinical characteristics and laboratory findings of pediatric COVID-19 patients. METHODS: Patients with a positive COVID-19 nasopharyngeal polymerase chain reaction (PCR) test between 11 March 2020 and 31 December 2020 were evaluated. RESULTS: During the study period, 3118 patients underwent PCR tests, and 621 of them (19.9%) were positive. Of the patients with a positive test result, 335 were male (53.9%), the median age was 11 years. There were 308 (49.6%) patients that had a history of household exposure. The mean time between the onset of the patients complaints and the diagnosis was 1.88 ± 1.16 days. The most common symptoms were: fever (n = 424), cough (n = 419) and nasal symptoms (n = 157); loss of smell (3.5%) and taste (4.3%) were other symptoms observed in only patients aged 10 years or older. The most common abnormal laboratory finding was lymphopenia (n = 29, 36.7%). Of the 621 patients, the vast majority (n = 546, 87.9%) were classified as mild COVID-19 disease. There was a significant relationship between disease severity and age and comorbidity (p = 0.01 and p < 0.001, respectively). Only 34 patients (5.5%) were admitted to hospital, and two patients were followed-up with a diagnosis of multisystem inflammatory syndrome in children. The mortality rate was 0.32%. CONCLUSION: COVID-19 can cause different symptoms in children. Although the disease generally causes a mild clinic presentation, it should be kept in mind that it may be more severe especially in children with comorbidities.

Utility of biomarkers in predicting complicated appendicitis: can immature granulocyte percentage and C-reactive protein be used?

BACKGROUND: Acute appendicitis is the most common reason for abdominal surgery in children. The aim of this study was to evaluate the utility of biomarkers in predicting complicated appendicitis (CA). METHODS: Patients having a diagnosis of acute appendicitis who underwent operations were retrospectively determined, and the utility of biomarkers in predicting CA was evaluated. RESULTS: A total of 251 patients were included in the study. The mean age was 130.9 ± 48.8 months, 148 of the cases (59%) were simple appendicitis, and 103 (41%) were CA. The C-reactive protein (CRP) levels, immature granulocyte (IG) percentage, white blood cell counts, and absolute neutrophil counts were significantly higher in the CA patients. The bilirubin levels and neutrophil to lymphocyte ratios were not useful for predicting CA. The best area under the curve (AUC) values to predict CA were with the IG percentage and CRP level (0.82), the IG percentage [odds ratio (OR) 9.36, 95% CI (4.94-17.75), p < 0.001] and CRP [OR 8.42, 95% CI (4.72-15.02), p < 0.001] were the best marker in predicting CA. The sensitivity of the IG percentage and CRP level were higher than other markers. CONCLUSION: To predict CA, the best AUC values were associated with the IG percentage and the CRP level. Because it is easy, fast to measure, does not require taking extra blood, and does not lead to additional costs, IG percentage may be preferred in the diagnosis of patients with CA.

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

INTRODUCTION: Serious bacterial infections (SBI) are major causes of mortality and morbidity in children. The aim of this study was to determine the accuracy of the immature granulocyte (IG) percentage in predicting SBI. METHODS: Patients admitted to the pediatric emergency department with fever were divided into two groups: with SBI and with non-SBI. White blood cell (WBC) count, absolute neutrophil count (ANC), C-reactive protein (CRP), and the percentage of IG value were recorded, and their accuracy in predicting SBI was evaluated. RESULTS: Sixty-one (14.3%) patients fell into the SBI group and 367 (85.7%) were with non-SBI. Mean IG percentage among SBI patients was 0.84 ± 1.21 and 0.27 ± 0.20 for with non-SBI patients (P = .001). Based on disease, the highest IG percentage was found in patients diagnosed with sepsis (IG 3.7 ± 3.5%) and with bacterial meningitis (IG 1.6 ± 1.3%). The area under the curve (AUC) of IG percentage to predict SBI was 0.83 with 95% confidence interval (CI) [0.78-0.88]; WBC was 0.76 (95% CI 0.70-0.83); ANC was 0.73 (95% CI 0.67-0.80), and CRP was 0.79 (95% CI 0.73-0.85). When infection markers were compared to the most appropriate cut-off values in predicting SBI, IG percentage showed the highest sensitivity and specificity. When the cut-off value was determined as >0.35 for IG percentage, sensitivity was 75.4% and specificity was 76.6% in predicting SBI. CONCLUSION: Patients with SBI had a higher IG percentage. Compared to other biomarkers, IG percentage had higher sensitivity and specificity in predicting SBI.