Assessing autonomic activity and prognostic risk factors comparing multisystem inflammatory syndrome and isolated viral myocarditis/myopericarditis.

INTRODUCTION AND AIM: In pediatric multisystem inflammatory syndrome and isolated viral myocarditis/myopericarditis, autonomic nervous system function can be evaluated by a non-invasive method called heart rate variability. This study aims to evaluate heart rate variability in these two groups by comparing them with each other. This is the first study assessing these values in these two groups of patients. METHOD: Patients who are diagnosed with multisystem inflammatory syndrome in children and isolated viral myocarditis/myopericarditis at a university hospital from September 2021 to February 2023 are screened by electrocardiography, echocardiography, and 24-hour Holter monitoring. A healthy control group, compatible in age and gender with the patient groups, was selected from healthy subjects that applied to the hospital for palpitation, murmur, and/or chest pain. Heart rate variability parameters and related laboratory markers were analyzed and compared among the three groups. RESULTS: There were 30 patients with multisystem inflammatory syndrome in children, 43 patients with isolated viral myocarditis/myopericarditis, and 109 participants in the healthy control group. Statistically significant differences were found in most of the heart rate variability parameters: standard deviation of normal to normal intervals (SDNN), the mean of the 5- minute RR interval standard deviations (SDNNI), the standard deviation of 5-minute R wave to R wave(RR) interval means (SDANN), the root mean square of successive RR interval differences (RMSSD), and the percentage of the beats with a consecutive RR interval difference of more than 50 ms (pNN50%), very low frequency, high frequency, low frequency, triangular index, and low frequency/high-frequency ratio. Multisystem inflammatory syndrome in children patients had impaired and declined heart rate variability values compared to the other two groups. In patients with myocarditis/myopericarditis, we couldn't find a significant difference in these parameters with the control group. CONCLUSION: Heart rate variability can be used as an important non-invasive autonomic function parameter in determining prognosis and treatment plans, especially in patients diagnosed with multisystem inflammatory syndrome in children. This impairment of autonomic activity could be more prominent in patients with decreased left ventricular systolic functions.

Pathogens in Pediatric Septic Arthritis: A Multi-Center Study in Turkiye (PEDSART Study).

OBJECTIVES: Septic arthritis (SA) is a serious bacterial infection that must be treated efficiently and timely. The large number of culture-negative cases makes local epidemiological data important. Accordingly, this study aimed to evaluate the etiology, clinical characteristics, and therapeutic approach of SA in children in Turkiye, emphasizing the role of real-time polymerase chain reaction (PCR) techniques in the diagnosis. METHODS: In this multi-center, prospective study, children hospitalized due to SA between February 2018 and July 2020 in 23 hospitals in 14 cities in Turkiye were included. Clinical, demographic, laboratory, and radiological findings were assessed, and real-time PCR was performed using synovial fluid samples. RESULTS: Seventy-five children aged between 3 and 204 months diagnosed with acute SA were enrolled. Joint pain was the main complaint at admission, and the most commonly involved joints were the knees in 58 patients (77.4%). The combination of synovial fluid culture and real-time PCR detected causative bacteria in 33 patients (44%). In 14 (18.7%) patients, the etiological agent was demonstrated using only PCR. The most commonly isolated etiologic agent was Staphylococcus aureus, which was detected in 22 (29.3%) patients, while Streptococcus pyogenes was found in 4 (5.3%) patients and Kingella kingae in 3 (4%) patients. Streptococcus pyogenes and Kingella kingae were detected using only PCR. Most patients (81.3%) received combination therapy with multiple agents, and the most commonly used combination was glycopeptides plus third-generation cephalosporin. CONCLUSIONS: Staphylococcus aureus is the main pathogen in pediatric SA, and with the use of advanced diagnostic approaches, such as real-time PCR, the chance of diagnosis increases, especially in cases due to Kingella kingae and Streptococcus pyogenes.

COVID-19 in hospitalized infants aged under 3 months: multi-center experiences across Turkey.

To investigate coronavirus disease 2019 (COVID-19) in infants aged 0 to 3 months because there is currently a significant gap in the literature on the subject. A cross-sectional study was conducted with the involvement of 19 medical centers across Turkey and 570 infants. The majority of the patients were male (58.2%), and the three most common symptoms were fever (78.2%), cough (44.6%), and feeding intolerance (39.9%). The results showed that a small percentage of infants had positive blood (0.9%) or urine cultures (10.2%). Most infants presented with fever (78.2%). Children without underlying conditions (UCs) had mostly a complicated respiratory course and a normal chest radiography. Significant more positive urine culture rates were observed in infants with fever. A higher incidence of respiratory support requirements and abnormal chest findings were seen in infants with chronic conditions. These infants also had a longer hospital stay than those without chronic conditions.  Conclusions: Our study discloses the clinical observations and accompanying bacterial infections found in infants aged under 3 months with COVID-19. These findings can shed light on COVID-19 in infancy for physicians because there is limited clinical evidence available. What is Known: • COVID-19 in infants and older children has been seen more mildly than in adults. • The most common symptoms of COVID-19 in infants are fever and cough, as in older children and adults. COVID-19 should be one of the differential diagnoses in infants with fever. What is New: • Although most infants under three months had fever, the clinical course was uneventful and respiratory complications were rarely observed in healthy children. • Infants with underlying conditions had more frequent respiratory support and abnormal chest radiography and stayed longer in the hospital.

Evaluation of Intestinal Microbiota in Children With Sickle Cell Disease.

BACKGROUND AND AIMS: Sickle cell disease (SCD) is a chronic hemolytic anemia that may be life-threatening due to multisystemic effects. Identification of the factors which affect the pathophysiology of the disease is important in reducing mortality and morbidity. This study aimed to determine gut microbial diversity in children and adolescents with SCA compared with healthy volunteers and to evaluate the clinical impact of microbiota. MATERIALS AND METHODS: The study included 34 children and young adolescents with SCD and 41 healthy volunteer participants. The microbiome was assessed by 16S rRNA sequencing in stool samples. Laboratory parameters of all participants, such as complete blood count and C-reactive protein values and clinical characteristics of SCD patients, were determined and compared, as well as clinical conditions of the patients, such as vascular occlusive crisis and/or acute chest syndrome, frequency of transfusions, intake of penicillin, hydroxyurea, and chelation therapy were recorded. RESULTS: White blood cell count, hemoglobin, immature granulocyte and C-reactive protein levels were significantly higher in the patient group ( P <0.05). Microbiota analysis revealed 3 different clusters among subjects; controls and 2 clusters in the SCD patients (patient G1 and G2 groups). Bacteroides spp. were more prevalent, while Dialester spp. and Prevotella spp. were less prevalent in SCD compared with controls ( t =2.142, P <0.05). Patient G2 (n=9) had a higher prevalence of Bacteroides and a lower prevalence of Prevotella than patient G1 (n=25). CONCLUSION: In our study, there was a difference between SCD patients and the control group, while 2 different microbiota profiles were encountered in SCD patients. This difference between the microbiota of the patients was not found to affect the clinical picture (such as vascular occlusive crisis, acute chest syndrome).

[Severe Encephalitis with Human Herpes Virus-7 (HHV-7) Associated Transient Splenial Lesion in an Immunocompetent Child: A Case Report]. / Immün Sistemi Saglam Çocukta Insan Herpes Virüs-7 (HHV-7) Iliskili Geçici Splenial Lezyon ile Birlikte Agir Ensefalit: Olgu Sunumu.

Encephalitis is the inflammation of the brain parenchyma accompanied by mental or behavioral neurological dysfunction, sensory or motor deficits, speech or movement disorders, and seizure. Encephalitis is an acute, life-threatening emergency that requires prompt recognition and a systematic approach for appropriate management. Human herpes virus (HHV-7) is one of the causative agents of encephalitis. In this report, a three years and six months old girl admitted to the hospital with the complaints of fever, cough, gushing vomiting, and altered consciousness, with fever, neck stiffness and blurred consciousness in her physical examination, and positive HHV-7 DNA polymerase chain reaction (PCR) in the cerebrospinal fluid (CSF) was presented. The CSF biochemistry of the patient was normal, and lymphocytic pleocytosis was detected in the CSF. Electroencephalography of the case revealed a cerebral dysfunction and hyperexcitability due to background activity abnormalities, and a cytotoxic transient lesion of the splenium in cranial magnetic resonance imaging. A 14-day foscarnet treatment was given to the patient after she progressed under empirical acyclovir treatment and HHV-7 was found to be the causative agent in the CSF. The patient was cured with the treatment and was followed up on an outpatient basis without any sequelae. In general, HHV-7 is estimated to be a common cause of pediatric acute encephalitis cases. It has been observed in the literature that almost all of the HHV-7-associated encephalitis cases occur after the age of six years, suggesting that HHV-7 causes neurological disease in children as a late infection. This case was three years and six months old and it was thought that she had encephalitis during primary infection. With this case report, we contributed to the literature by presenting a case of encephalitis in an immunocompetent pediatric patient with a transient splenial lesion associated with HHV-7, which progressed with empirical acyclovir treatment and responded to foscarnet treatment.

Evaluation of possible COVID-19 reinfection in children: A multicenter clinical study.

BACKGROUND: Although it was originally unknown whether there would be cases of reinfection of coronavirus disease 2019 (COVID-19) as seen with other coronaviruses, cases of reinfection were reported from various regions recently. However, there is little information about reinfection in children. METHODS: In this study, we aimed to investigate the incidence and clinical findings of reinfection in pediatric patients who had recovered from COVID-19. We retrospectively evaluated all patients under 18 years of age with COVID-19 infection from a total of eight healthcare facilities in Turkey, between March 2020 and July 2021. Possible reinfection was defined as a record of confirmed COVID-19 infection based on positive reverse transcription-polymerase chain reaction (RT-PCR) test results at least 3 months apart. RESULTS: A possible reinfection was detected in 11 out of 8840 children, which yielded an incidence of 0.12%. The median duration between two episodes of COVID-19 was 196 (92-483) days. When initial and second episodes were compared, the rates of symptomatic and asymptomatic disease were similar for both, as was the severity of the disease (p = 1.000). Also, there was no significant difference in duration of symptoms (p = 0.498) or in hospitalization rates (p = 1.000). Only one patient died 15 days after PCR positivity, which resulted in a 9.1% mortality rate for cases of reinfection in pediatric patients. CONCLUSION: We observed that children with COVID-19 were less likely to be exposed to reinfection when compared with adults. Although the clinical spectrum of reinfection was mostly similar to the first episode, we reported death of a healthy child during the reinfection.

Should Perirectal Swab Culture Be Performed in Cases Admitted to the Neonatal Intensive Care Unit? Lessons Learned from the Neonatal Intensive Care Unit.

Serial perirectal swabs are used to identify colonization of multidrug-resistant bacteria and prevent spread. The purpose of this study was to determine colonization with carbapenem-resistant Enterobacterales (CRE) and vancomycin-resistant Enterococci (VRE). An additional purpose was to establish whether sepsis and epidemic associated with these factors were present in the neonatal intensive care unit (NICU), to which infants with hospital stays exceeding 48 h in an external healthcare center NICU were admitted. Perirectal swab samples were collected in the first 24 h by a trained infection nurse using sterile cotton swabs moistened with 0.9% NaCl from patients admitted to our unit after hospitalization exceeding 48 h in an external center. The primary outcome was positivity in perirectal swab cultures, and the secondary outcomes were whether this caused invasive infection and significant NICU outbreaks. A total of 125 newborns meeting the study criteria referred from external healthcare centers between January 2018 and January 2022 were enrolled. Analysis revealed that CRE constituted 27.2% of perirectal swab positivity and VRE 4.8%, and that one in every 4.4 infants included in the study exhibited perirectal swab positivity. The detection of colonization by these microorganisms, and including them within the scope of surveillance, is an important factor in the prevention of NICU epidemics.

Prevalence of Anosmia in 10.157 Pediatric COVID-19 Cases: Multicenter Study from Turkey.

INTRODUCTION: COVID-19-related anosmia is a remarkable and disease-specific finding. With this multicenter cohort study, we aimed to determine the prevalence of anosmia in pediatric cases with COVID-19 from Turkey and make an objective assessment with a smell awareness questionnaire. MATERIAL AND METHODS: This multicenter prospective cohort study was conducted with pediatric infection clinics in 37 centers in 19 different cities of Turkey between October 2020 and March 2021. The symptoms of 10.157 COVID-19 cases 10-18 years old were examined. Age, gender, other accompanying symptoms, and clinical severity of the disease of cases with anosmia and ageusia included in the study were recorded. The cases were interviewed for the smell awareness questionnaire at admission and one month after the illness. RESULTS: Anosmia was present in 12.5% (1.266/10.157) of COVID-19 cases 10-18 years of age. The complete records of 1053 patients followed during the study period were analyzed. The most common symptoms accompanying symptoms with anosmia were ageusia in 885 (84%) cases, fatigue in 534 cases (50.7%), and cough in 466 cases (44.3%). Anosmia was recorded as the only symptom in 84 (8%) of the cases. One month later, it was determined that anosmia persisted in 88 (8.4%) cases. In the smell awareness questionnaire, the score at admission was higher than the score one month later (P < 0.001). DISCUSSION: With this study, we have provided the examination of a large case series across Turkey. Anosmia and ageusia are specific symptoms seen in cases of COVID-19. With the detection of these symptoms, it should be aimed to isolate COVID-19 cases in the early period and reduce the spread of the infection. Such studies are important because the course of COVID-19 in children differs from adults and there is limited data on the prevalence of anosmia.

Nasopharyngeal Meningococcal Carriage among Children and Adolescents in Turkey in 2018: An Unexpected High Serogroup X Carriage.

Meningococcal carriage studies and transmission modeling can predict IMD epidemiology and used to define invasive meningococcal disease (IMD) control strategies. In this multicenter study, we aimed to evaluate the prevalence of nasopharyngeal Neisseria meningitidis (Nm) carriage, serogroup distribution, and related risk factors in Turkey. Nasopharyngeal samples were collected from a total of 1267 children and adolescents and were tested with rt-PCR. Nm carriage was detected in 96 participants (7.5%, 95% CI 6.1-9.0), with the peak age at 13 years (12.5%). Regarding age groups, Nm carriage rate was 7% in the 0-5 age group, was 6.9%in the 6-10 age group, was 7.9% in the 11-14 age group, and was 9.3% in the 15-18 age group. There was no statistically significant difference between the groups (p > 0.05). The serogroup distribution was as follows: 25% MenX, 9.4% MenA, 9.4% MenB, 2.1% MenC, 3.1% MenW, 2.1% for MenY, and 48.9% for non-groupable. The Nm carriage rate was higher in children with previous upper respiratory tract infections and with a high number of household members, whereas it was lower in children with antibiotic use in the last month (p < 0.05 for all). In this study, MenX is the predominant carriage strain. The geographical distribution of Nm strains varies, but serogroup distribution in the same country might change in a matter of years. Adequate surveillance and/or a proper carriage study is paramount for accurate/dynamic serogroup distribution and the impact of the proposed vaccination.

Multicenter Hospital-Based Prospective Surveillance Study of Bacterial Agents Causing Meningitis and Seroprevalence of Different Serogroups of Neisseria meningitidis, Haemophilus influenzae Type b, and Streptococcus pneumoniae during 2015 to 2018 in Turkey.

The etiology of bacterial meningitis in Turkey changed after the implementation of conjugated vaccines against Streptococcus pneumoniae and Haemophilus influenzae type b (Hib) in the Turkish National Immunization Program (NIP). Administration of Hib vaccine and PCV-7 (7-valent pneumococcal conjugate vaccine) was implemented in NIP in 2006 and 2009, respectively. In 2011, PCV-7 was replaced with PCV-13. Meningococcal vaccines have not yet been included in Turkish NIP. This prospective study comprised 27 hospitals located in seven regions of Turkey and represented 45% of the population. Children aged between 1 month and 18 years who were hospitalized with suspected meningitis were included. Cerebrospinal fluid (CSF) samples were collected, and bacterial identification was made according to the multiplex PCR assay results. During the study period, 994 children were hospitalized for suspected meningitis, and Hib (n = 3, 2.4%), S. pneumoniae (n = 33, 26.4%), and Neisseria meningitidis (n = 89, 71%) were detected in 125 samples. The most common meningococcal serogroup was MenB. Serogroup W comprised 13.9% (n = 5) and 7.5% (n = 4) of the meningococci in 2015 to 2016 and 2017 to 2018, respectively. Serogroup C was not detected. There were four deaths in the study; one was a pneumococcus case, and the others were serogroup B meningococcus cases. The epidemiology of meningococcal diseases has varied over time in Turkey. Differing from the previous surveillance periods, MenB was the most common serogroup in the 2015-to-2018 period. Meningococcal epidemiology is so dynamic that, for vaccination policies, close monitoring is crucial.IMPORTANCE Acute bacterial meningitis (ABM) is one of the most common life-threatening infections in children. The incidence and prevalence of ABM vary both geographically and temporally; therefore, surveillance systems are necessary to determine the accurate burden of ABM. The Turkish Meningitis Surveillance Group has been performing a hospital-based meningitis surveillance study since 2005 across several regions in Turkey. Meningococcus was the major ABM-causing agent during the 2015-to-2018 period, during which MenB was the dominant serogroup.

Función del índice de volumen plaquetario medio/linfocitos en el diagnóstico de la apendicitis durante la niñez / Role of mean platelet volume-to-lymphocyte ratio in the diagnosis of childhood appendicitis

Introducción. El índice de volumen plaquetario medio/linfocitos (IVPML) es un parámetro novedoso de inflamación y trombosis. El objetivo fue evaluar si cumple una función en el diagnóstico de la apendicitis pediátrica.Población y métodos. Se revisaron retrospectivamente historias clínicas de pacientes de hasta 18 años con sospecha de apendicitis aguda (AA) sometidos a apendicectomía entre enero de 2016 y diciembre de 2017. Según la evaluación histopatológica, se clasificó a los pacientes en apéndice normal y apendicitis simple y perforante. Se midieron volumen plaquetario medio (VPM), amplitud de distribución plaquetaria (ADP), IVPML, índice de plaquetas/linfocitos (IPL), recuentos de plaquetas y leucocitos, y concentración de proteína C-reactiva (PCR).Resultados. Se revisaron los registros de 219 niños con sospecha de AA sometidos a tratamiento quirúrgico por apendicitis, y se incluyó a 100 niños sanos de la misma edad y sexo. Comparados con los controles, los valores medios de IVPML, IPL, leucocitos y PCR fueron más elevados en los niños con apendicectomía (p < 0,001). Estos valores fueron más elevados en los casos de apendicitis simple que de apéndices normales (p< 0,01). Comparados con la apendicitis simple, estos valores fueron más elevados en los niños con apendicitis perforante (p< 0,001). Las áreas bajo la curva del IVPML e IPL fueron 0,771 y 0,726 en la predicción de apendicitis y 0,693 y 0,722 en la predicción de perforación, respectivamente.Conclusiones. Una concentración elevada de IVPML podría contribuir a diagnosticar la AA pediátrica. Además, puede ayudar a diferenciar la apendicitis simple de la perforante.

Introduction. Mean platelet volume-to-lymphocyte ratio (MPVLR) has emergedas a novel parameter of inflammation andthrombosis. The aim was to evaluate whether MPVLR has a role in the diagnosis ofchildhood appendicitis. Population and methods. Retrospectively reviewed the medical records up to 18 year with suspected acute appendicitis (AA) who underwent appendectomy between January 2016 and December 2017. Based on histopathological evaluation, the patients were classified into normal appendix, and simple and perforated appendicitis. Preoperative mean platelet volume (MPV), platelet distributionwidth (PDW), MPVLR, platelet-to-lymphocyteratio (PLR), counts of platelets and white bloodcells (WBC), and C-reactive protein (CRP) levels were measured. Results. A total of 219 children with clinically suspected AA who underwent surgical treatmentfor appendicitis were reviewed, and 100 gender-age matched healthy subjects were included. Compared with the controls, the mean levels of MPVLR, PLR, WBC and CRP were significantly higher in the children underwent appendectomy (p <0.001). These values were significantly higherin simple appendicitis than in normal appendices (p<0.01). Compared with simple appendicitis,these levels were significantly higher in thechildren with perforated appendicitis (p <0.001). The area under curves for MPVLR and PLR were0.771 and 0.726 in the prediction of appendicitisand 0.693 and 0.722 in the prediction of perforation, respectively. Conclusions. Increased level of MPVLR may bevaluable for aiding the diagnosis of pediatric AA. In addition, it can help discriminate simple and perforated appendicitis in children.

Role of mean platelet volume-to-lymphocyte ratio in the diagnosis of childhood appendicitis. / Función del índice de volumen plaquetario medio/linfocitos en el diagnóstico de la apendicitis durante la niñez.

INTRODUCTION: Mean platelet volume - to -lymphocyte ratio (MPVLR) has emerged as a novel parameter of inflammation and thrombosis. The aim was to evaluate whether MPVLR has a role in the diagnosis of childhood appendicitis. POPULATION AND METHODS: Retrospectively reviewed the medical records up to 18 year with suspected acute appendicitis (AA) who underwent appendectomy between January 2016 and December 2017. Based on histopathological evaluation, the patients were classified into normal appendix, and simple and perforated appendicitis. Preoperative mean platelet volume (MPV), platelet distribution width (PDW), MPVLR, platelet-to-lymphocyte ratio (PLR), counts of platelets and white blood cells (WBC), and C-reactive protein (CRP) levels were measured. RESULTS: A total of 219 children with clinically suspected AA who underwent surgical treatment for appendicitis were reviewed, and 100 genderage matched healthy subjects were included. Compared with the controls, the mean levels of MPVLR, PLR, WBC and CRP were significantly higher in the children underwent appendectomy (p <0.001). These values were significantly higher in simple appendicitis than in normal appendices (p<0.01). Compared with simple appendicitis, these levels were significantly higher in the children with perforated appendicitis (p <0.001). The area under curves for MPVLR and PLR were 0.771 and 0.726 in the prediction of appendicitis and 0.693 and 0.722 in the prediction of perforation, respectively. CONCLUSIONS: Increased level of MPVLR may be valuable for aiding the diagnosis of pediatric AA. In addition , it can help discriminate simple and perforated appendicitis in children.

Introducción. El índice de volumen plaquetario medio/linfocitos (IVPML) es un parámetro novedoso de inflamación y trombosis. El objetivo fue evaluar si cumple una función en el diagnóstico de la apendicitis pediátrica. Población y métodos. Se revisaron retrospectivamente historias clínicas de pacientes de hasta 18 años con sospecha de apendicitis aguda (AA) sometidos a apendicectomía entre enero de 2016 y diciembre de 2017. Según la evaluación histopatológica, se clasificó a los pacientes en apéndice normal y apendicitis simple y perforante. Se midieron volumen plaquetario medio (VPM), amplitud de distribución plaquetaria (ADP), IVPML, índice de plaquetas/linfocitos (IPL), recuentos de plaquetas y leucocitos, y concentración de proteína C-reactiva (PCR). Resultados. Se revisaron los registros de 219 niños con sospecha de AA sometidos a tratamiento quirúrgico por apendicitis, y se incluyó a 100 niños sanos de la misma edad y sexo. Comparados con los controles, los valores medios de IVPML, IPL, leucocitos y PCR fueron más elevados en los niños con apendicectomía (p < 0,001). Estos valores fueron más elevados en los casos de apendicitis simple que de apéndices normales (p < 0,01). Comparados con la apendicitis simple, estos valores fueron más elevados en los niños con apendicitis perforante (p < 0,001). Las áreas bajo la curva del IVPML e IPL fueron 0,771 y 0,726 en la predicción de apendicitis y 0,693 y 0,722 en la predicción de perforación, respectivamente. Conclusiones. Una concentración elevada de IVPML podría contribuir a diagnosticar la AA pediátrica. Además, puede ayudar a diferenciar la apendicitis simple de la perforante.

Antifungal consumption, indications and selection of antifungal drugs in paediatric tertiary hospitals in Turkey: Results from the first national point prevalence survey.

OBJECTIVES: The aim of this point prevalence survey was to evaluate the consumption, indications and strategies of antifungal therapy in the paediatric population in Turkey. METHODS: A point prevalence study was performed at 25 hospitals. In addition to general data on paediatric units of the institutes, the generic name and indication of antifungal drugs, the presence of fungal isolation and susceptibility patterns, and the presence of galactomannan test and high-resolution computed tomography (HRCT) results were reviewed. RESULTS: A total of 3338 hospitalised patients were evaluated. The number of antifungal drugs prescribed was 314 in 301 patients (9.0%). Antifungal drugs were mostly prescribed in paediatric haematology and oncology (PHO) units (35.2%), followed by neonatal ICUs (NICUs) (19.6%), paediatric services (18.3%), paediatric ICUs (PICUs) (14.6%) and haematopoietic stem cell transplantation (HSCT) units (7.3%). Antifungals were used for prophylaxis in 147 patients (48.8%) and for treatment in 154 patients (50.0%). The antifungal treatment strategy in 154 patients was empirical in 77 (50.0%), diagnostic-driven in 29 (18.8%) and targeted in 48 (31.2%). At the point of decision-making for diagnostic-driven antifungal therapy in 29 patients, HRCT had not been performed in 1 patient (3.4%) and galactomannan test results were not available in 12 patients (41.4%). Thirteen patients (8.4%) were receiving eight different antifungal combination therapies. CONCLUSION: The majority of antifungal drugs for treatment and prophylaxis were prescribed in PHO and HSCT units (42.5%), followed by ICUs. Thus, antifungal stewardship programmes should mainly focus on these patients within the availability of diagnostic tests of each hospital.

Relationship between mean platelet volume-to-lymphocyte ratio and coronary artery abnormalities in Kawasaki disease.

OBJECTIVES: Recently, mean platelet volume-to-lymphocyte ratio has emerged as a novel parameter of inflammation. No study has investigated the role of mean platelet volume-to-lymphocyte ratio in children with Kawasaki disease. We aimed to evaluate the relationship between mean platelet volume-to-lymphocyte ratio and coronary artery abnormalities in Kawasaki disease. METHODS: Between January 2008 and January 2017, a total of 58 children with Kawasaki disease and 42 healthy subjects matched for sex and age were enrolled. Before the treatment, transthoracic echocardiography for all children was performed. Clinical and laboratory results including mean platelet volume, platelet distribution width, red blood cell distribution width, and counts of platelets, neutrophils, lymphocytes, and white blood cells, erythrocyte sedimentation rate, and C-reactive protein levels were measured. Mean platelet volume-to-lymphocyte ratio was calculated as mean platelet volume divided by lymphocyte count. RESULTS: Compared with healthy controls, mean platelet volume-to-lymphocyte ratio was significantly lower in the children with Kawasaki disease (p<0.01). A total of 14 patients (24.1%) had incomplete Kawasaki disease and 15 (25.8%) children with Kawasaki disease had coronary involvement. Mean platelet volume-to-lymphocyte ratio was significantly lower in patients with coronary artery abnormalities (p<0.01). According to receiver operating characteristic curve analysis performed for the prediction of coronary artery abnormalities, the best cut-off point for mean platelet volume-to-lymphocyte ratio was 2.5 (area under curve=0.593, sensitivity 53.3%, specificity 51.1%). CONCLUSION: It was first shown that the children with Kawasaki disease have lower mean platelet volume-to-lymphocyte ratio compared with control subjects. Mean platelet volume-to-lymphocyte ratio may be helpful in predicting coronary artery lesions in patients with Kawasaki disease.

El valor de proteínas de fase aguda y la prueba LightCycler® SeptiFast en el diagnóstico de infecciones bacterianas y virales en niños / The value of acute phase reactants and LightCycler® SeptiFast test in the diagnosis of bacterial and viral infections in pediatric patients

Introducción. Evaluamos el nivel de reactantes de fase aguda y la prueba LightCycler® SeptiFast para diferenciar infecciones bacterianas vs.virales. Métodos. Estudio prospectivo en niños febriles. Se analizaron recuento de leucocitos, proteína C-reactiva y procalcitonina en días 1, 3 y 7 de hospitalización. El día 1 se realizaron hemocultivo y radiografía de tórax. Se evaluaron dos grupos de niños que presentaron infecciones bacterianas o virales. Resultados. Se incluyeron 94 niños febriles. La temperatura media de la fiebre fue significativamente más alta en niños con infecciones bacterianas que con infecciones virales (p < 0,001). En 34 (72,3%) niños con infecciones bacterianas, el hemocultivo fue negativo. De ellos, 12 (35,2%) presentaron prueba SeptiFast positiva. No hubo resultados positivos en hemocultivos de niños con infecciones virales y todos tuvieron resultado negativo para la prueba SeptiFast. La media de proteína C-reactiva el primer día de hospitalización fue significativamente más alta en el grupo con infecciones bacterianas (p < 0,001) y en los días 3 y 7 junto con la procalcitonina fueron significativamente más altas en niños con infecciones bacterianas (p <0,001). La sensibilidad y especificidad de los leucocitos, la proteína C-reactiva y la procalcitonina fueron 63,8%, 44,7%, 74,5% y 78,7%, 68,1% y 100%, respectivamente. Las áreas bajo la curva de los leucocitos, la proteína C-reactiva y la procalcitonina fueron 0,519, 0,764 y 0,835, respectivamente. Conclusiones. Los reactantes de fase aguda, en especial procalcitonina, y la prueba LightCycler® SeptiFast podrían ayudar a diferenciar infecciones bacterianas de virales.

Introduction: This study was performed to investigate the value of acute phase reactants and LightCycler® SeptiFast test to differentiate bacterial and viral infections. Population and methods: Children with fever were enrolled to this prospective study. Peripheral white blood cell (WBC), C-reactive protein (CRP) and procalcitonin (PCT) were studied from all patients on day 1, 3 and 7. Blood culture and chest X-ray were also obtained on day 1. Blood samples for LightCycler® SeptiFast test were obtained in all patients to use them if there was uncertain diagnosis between bacterial or viral infection. The patients were divided into two groups as bacterial and viral infection. Results: A total of 94 children with fever were enrolled. The mean value of fever was significantly higher in bacterial group than viral group (p <0.001). In bacterial infection group, 34 (72.3%) patients had negative blood culture. Of those, 12 (35.2%) had positive SeptiFast test. There were no positive blood culture in patients with viral infection group and all of them had negative SeptiFast test. The mean levels of CRP on the first day of admission were significantly higher in bacterial group than viral group (p <0.001). CRP and PCT levels of day 3 and 7 were significantly higher in bacterial group (p <0.001). The sensitivity and specificity levels of WBC, CRP and PCT were 63.8%, 44.7%, 74.5% and 78.7% ,68.1% and 100%, respectively. Conclusions: We found that acute phase reactants, especially PCT, and LightCycler® SeptiFast test may help to differentiate bacterial and viral infections.

The value of acute phase reactants and LightCycler® SeptiFast test in the diagnosis of bacterial and viral infections in pediatric patients. / El valor de proteínas de fase aguda y la prueba LightCycler® SeptiFast en el diagnóstico de infecciones bacterianas y virales en niños.

INTRODUCTION: This study was performed to investigate the value of acute phase reactants and LightCycler® SeptiFast test to differentiate bacterial and viral infections. POPULATION AND METHODS: Children with fever were enrolled to this prospective study. Peripheral white blood cell (WBC), C-reactive protein (CRP) and procalcitonin (PCT) were studied from all patients on day 1, 3 and 7. Blood culture and chest X-ray were also obtained on day 1. Blood samples for LightCycler® SeptiFast test were obtained in all patients to use them if there was uncertain diagnosis between bacterial or viral infection. The patients were divided into two groups as bacterial and viral infection. RESULTS: A total of 94 children with fever were enrolled. The mean value of fever was significantly higher in bacterial group than viral group (p <0.001). In bacterial infection group, 34 (72.3%) patients had negative blood culture. Of those, 12 (35.2%) had positive SeptiFast test. There were no positive blood culture in patients with viral infection group and all of them had negative SeptiFast test. The mean levels of CRP on the first day of admission were significantly higher in bacterial group than viral group (p <0.001). CRP and PCT levels of day 3 and 7 were significantly higher in bacterial group (p <0.001). The sensitivity and specificity levels of WBC, CRP and PCT were 63.8%, 44.7%, 74.5% and 78.7% ,68.1% and 100%, respectively. CONCLUSIONS: We found that acute phase reactants, especially PCT, and LightCycler® SeptiFast test may help to differentiate bacterial and viral infections.

INTRODUCCIÓN: Evaluamos el nivel de reactantes de fase aguda y la prueba LightCycler® SeptiFast para diferenciar infecciones bacterianas vs. irales. MÉTODOS: Estudio prospectivo en niños febriles. Se analizaron recuento de leucocitos, proteína C-reactiva y procalcitonina en días 1, 3 y 7 de hospitalización. El día 1 se realizaron hemocultivo y radiografía de tórax. Se evaluaron dos grupos de niños que presentaron infecciones bacterianas o virales. RESULTADOS: Se incluyeron 94 niños febriles. La temperatura media de la fiebre fue significativamente más alta en niños con infecciones bacterianas que con infecciones virales (p < 0,001). En 34 (72,3%) niños con infecciones bacterianas, el hemocultivo fue negativo. De ellos, 12 (35,2%) presentaron prueba SeptiFast positiva. No hubo resultados positivos en hemocultivos de niños con infecciones virales y todos tuvieron resultado negativo para la prueba SeptiFast. La media de proteína C-reactiva el primer día de hospitalización fue significativamente más alta en el grupo con infecciones bacterianas (p < 0,001) y en los días 3 y 7 junto con la procalcitonina fueron significativamente más altas en niños con infecciones bacterianas (p <0,001). La sensibilidad y especificidad de los leucocitos, la proteína C-reactiva y la procalcitonina fueron 63,8%, 44,7%, 74,5% y 78,7%, 68,1% y 100%, respectivamente. Las áreas bajo la curva de los leucocitos, la proteína C-reactiva y la procalcitonina fueron 0,519, 0,764 y 0,835, respectivamente. CONCLUSIONES: Los reactantes de fase aguda, en especial procalcitonina, y la prueba LightCycler® SeptiFast podrían ayudar a diferenciar infecciones bacterianas de virales.

[Diagnostic accuracy of the LightCycler® SeptiFast assay in the childhood febrile neutropenia]. / Çocukluk çagi nötropenik ates ataklarinda LightCycler® SeptiFast testinin tanisal dogrulugu.

Infection is the main problem among the patients receiving cancer therapy. The mortality rate can be reduced by the appropriate treatment in the right time. Although blood culture is the gold standard for the diagnoses of sepsis, many factors influence the results of blood culture in children. For this reason, real time polymerase chain reaction (Rt-PCR) has gained importance for the diagnoses of microbiological agents as it is faster than the conventional methods. In this study, we aimed to compare the efficacy of SeptiFast (SF) test with blood culture among children with neutropenic fever. Between January 2013 and December 2014, 62 children (34 boys, 38 girls) mean age 7.56 ± 4.8 (0-18) years with cancer were included in this study during their 94 febrile attacks of neutropenia (NA). Blood samples for blood culture and Septifast test were taken before the initiation of antibiotic therapy. Blood cultures were routinely collected in aerobic and anaerobic media and incubated using the BACTEC 9120 system (Becton-Dickinson Diagnostic Systems, USA). Identification and antimicrobial susceptibility testing of the isolates were performed using the Vitek2® system (bioMérieux, France) according to the recommendations of the Clinical and Laboratory Standards Institute. The LightCycler SF test was used according to the manufacturer instructions. Of 94 attacks 34 (36.1%) were positive for blood culture and 33 (35.1%) for SF test. The positivity ratio is found as 29.7% (28/94) by blood culture when the analysis of five coagulase negative staphylococci were excluded due to contamination. Positivity was detected in 25 (26.6%) of the 94 NA both with blood culture and SF test.The difference between these two tests was statistically significant (p< 0.05). There was discordance with a rate of 28.7% between these two methods. Polymicrobial infections were detected only with SF test. The detection of fungal infection rate was higher with SF test than blood culture. When SF test was compared with blood culture the results were as follows; sensitivity 91%, specificity 98.3%, positive predictive value 97%, negative predictive value 96.7%, diagnostic performance was 96.2%, respectively. As a result, PCR based tests can be used in children with NA attacks even though blood culture is still needed to perform the antibiotic sensitivity tests. SF test seems to be a sensitive test for the early diagnosis of the pathogens and the initiation of the appropriate therapy according to the etiological agent.

The prevalence, serogroup distribution and risk factors of meningococcal carriage in adolescents and young adults in Turkey.

The serogroup epidemiology of invasive meningococcal disease (IMD), which varies considerably by geographic region and immunization schedule, changes continuously. Meningococcal carriage data are crucial for assessing IMD epidemiology and designing f potential vaccination strategies. Meningococcal seroepidemiology in Turkey differs from that in other countries: serogroups W and B are the predominant strains for IMD during childhood, whereas no serogroup C cases were identified over the last 10 y and no adolescent peak for IMD was found. There is a lack of data on meningococcal carriage that represents the whole population. The aims of this multicenter study (12 cities in Turkey) were to evaluate the prevalence of Neisseria meningitidis carriage, the serogroup distribution and the related risk factors (educational status, living in a dormitory or student house, being a household contact with Hajj pilgrims, smoking, completion of military service, attending bars/clubs) in 1518 adolescents and young adults aged 10-24 y. The presence of N. meningitidis DNA was tested, and a serogroup analysis was performed using polymerase chain reaction. The overall meningococcal carriage rate was 6.3% (n = 96) in the study population. A serogroup distribution of the 96 N. meningitidis strains isolated from the nasopharyngeal specimens revealed serogroup A in 5 specimens (5.2%), serogroup B in 9 specimens (9.4%), serogroup W in 64 specimens (66.6%), and serogroup Y in 4 specimens (4.2%); 14 were classified as non-grouped (14.4%). No serogroup C cases were detected. The nasopharyngeal meningococcal carriage rate was 5% in the 10-14 age group, 6.4% in the 15-17 age-group, and 4.7% in the 18-20 age group; the highest carriage rate was found in the 21-24 age group (9.1%), which was significantly higher than those of the other age groups (p < 0.05). The highest carriage rate was found in 17-year-old adolescents (11%). The carriage rate was higher among the participants who had had close contact with Hajj/Umrah pilgrims (p < 0.01) or a history of upper respiratory tract infections over the past 3 months (p < 0.05). The nasopharyngeal carriage rate was 6.3% among adolescents and young adults in Turkey and was similar to the recent rates observed in the same age groups in other countries. The most prevalent serogroup was W, and no serogroup C cases were found. In conclusion, the present study found that meningococcal carriage reaches its peak level by age 17, the highest carriage rate was found in 21 - to 24 - year-olds and the majority of the carriage cases were due to serogroup W. Adolescents and young adult carriers seem to be a potential reservoir for the disease, and further immunization strategies, including adolescent immunization, may play a role in the control of IMD.

The diagnostic and prognostic value of angiopoietins compared with C-reactive protein and procalcitonin in children with febrile neutropenia.

Mimaroglu E, Çitak EÇ, Kuyucu N, Eskendari G. The diagnostic and prognostic value of angiopoietins compared with C-reactive protein and procalcitonin in children with febrile neutropenia. Turk J Pediatr 2017; 59: 418-425. In this study, we aimed to determine serum angiopoetin (Ang) levels and compare them with levels of C-reactive protein (CRP) and procalcitonin (PCT). Cancer patients (aged 0-18 years) who experienced febrile neutropenia attacks were included in the study. Ang-1, Ang-2, CRP, and PCT were analyzed at admission and 2nd day. Ninety-four episodes of febrile neutropenia that developed in 62 patients were analyzed in this study. The mean age of the patients was 7.56 ± 4.8 (0.5-17) years. The patients had lymphoma (33.9%), solid tumors (48.4%), and other cancer (17.7%). The percentages of the patients with fever of unknown origin (FUO), clinically documented infection (CDI), and microbiologically documented infection (MDI) categories were 45.7%, 22.3%, and 31.9%, respectively. During the study period 11 patients were lost to follow-up. The levels of CRP, PCT and Ang-2 were significantly higher; and that of Ang-1 was significantly lower, compared to the controls. The differentiation cannot be made between the groups by CRP and PCT levels. The level of Ang-1 was the lowest in MDI group; the level of Ang-2 and the ratio of Ang-2/Ang-1 were high in each group. Ang-1, Ang-2 and the ratio of Ang-2/Ang-1 were significantly associated with mortality. Angs correlated with the severity of infection.

Primary pulmonary Langerhans cell histiocytosis associated with smoking in an adolescent boy.

Pulmonary Langerhans cell histiocytosis (PLCH) is a well known entity in adults but is exceedingly rare in children. It is better described in adults than in children. Smoking is a major etiological factor in adulthood. We report a case of a previously healthy 16-year-old male with a history of cigarette smoking, who presented with cough with sputum, breathlessness, easy fatigability and loss of appetite for two weeks. He was first diagnosed with bronchiectasis according to the cystic pulmonary changes demonstrated by computed tomography. After appropriate treatment, there was no sign of clinical improvement. A lung biopsy confirmed Langerhans cell histiocytosis (LCH). The definitive diagnosis was isolated pulmonary LCH. PLCH should be considered in the etiology of cystic lung diseases. Isolated pulmonary LCH is rare so such cases are needed to be reported and followed-up to understand the treatment response and course of this illness.