Pediatric kidney care experience after the 2023 Turkey/Syria earthquake.

BACKGROUND/AIMS: Two earthquakes on February 6th, 2023 destroyed ten cities in Türkiye. We report our experience with pediatric victims during these catastrophes, with a focus on crush syndrome related-acute kidney injury (Crush-AKI) and death. METHOD: A web-based software was prepared. Patient demographics, time under rubble (TUR), admission laboratory data, dialysis, and kidney and overall outcomes were asked. RESULTS: 903 injured children (median age: 11.62 years) were evaluated. Mean TUR was 13 h (Interquartile range-IQR: 32.5), max 240 h). 31 of 32 patients with a TUR of >120 h survived. The patient who rescued after ten days survived.Two-thirds of the patients were given 50 mEq/L sodium-bicarbonate in 0.45% sodium-chloride solution on admission day. 58% of patients were given intravenous fluid (IVF) at a volume of 2000-3000 mL/m2 body surface area (BSA), 40% of 3000-4000 mL/m2 BSA, and only 2% of >4000 mL/m2 BSA. 425 patients had surgeries, 48 suffered from major bleeding. Amputations were recorded in 96 patients. Eighty-two and 66 patients required ventilator and inotropic support, respectively.Crush-AKI developed in 314 patients (36% of all patients). 189 patients were dialyzed. Age > 15 years, creatine phosphokinase (CK)≥20 950 U/L, TUR≥10 h, and the first-day IVF volume < 3000-4000 mL/m2 BSA were associated with Crush-AKI development. 22 deaths were recorded, 20 of 22 occurred in patients with Crush-AKI and within the first 4 days of admission. All patients admitted after 7 days survived. CONCLUSIONS: This is the most extensive pediatric kidney disaster data after an earthquake. Serum CK level was significantly associated with Crush-AKI at the levels of >20 950 U/L, but not with death. Adolescent age and initial IVF of less than 3000-4000 mL/m2 BSA were also asscoiated with Crush-AKI. Given that mildly injured victims can survive longer periods in the disaster field, we suggest uninterrupted rescue activity for at least 10 days.

Uroflowmetry parameters in healthy children between 5 and 15 years old.

OBJECTIVES: Uroflowmetry (UFM) is the first-line noninvasive screening test employed in the diagnosis of lower urinary tract dysfunction (LUTD). The purpose of this study was to determine normal UFM values in healthy Turkish children among our local population. METHODS: A total of 100 healthy girls and 62 healthy boys aged 5-15 years, who applied to Inönü University Turgut Özal Medical Center Pediatrics Polyclinic between February 2021 and January 2022, were included in the present study. The UFM parameters, including maximum flow rate (Qmax), average flow rate (Qavg), voided volume (VV), time to maximum flow, and voiding time, were measured using the Inoflow Smart System UFM Device and the resulting urine flow curve was recorded. The children were compared in terms of the UFM parameters based on their gender and age groups (5-10 years and 11-15 years). RESULTS: The mean Qmax value in healthy female children aged 5-15 years (21.8 ± 8.6 mL/s) was significantly higher than in male children (17.98 ± 6.1 mL/s) (p = .003). VV, Qmax, and Qavg values of the children in the 11-15 age group were significantly higher than those in the age group of 5-10 years (p > .05 for each). VV, Qmax, and Qavg values were directly proportional to age (p = .0001, for each). CONCLUSIONS: We believe that this study adds to the limited knowledge base regarding normal flow patterns in healthy children.

Effectiveness of game-based core exercise in children with non-neuropathic bladder dysfunction and comparison to biofeedback therapy.

OBJECTIVES: This study was planned to evaluate the effectiveness of game-based core exercises in children diagnosed with non-neuropathic bladder dysfunction and compare this effectiveness to that of the biofeedback treatment method. METHODS: The study included 48 children, aged 6-13 years, who were diagnosed with non-neuropathic bladder dysfunction. The children satisfying the inclusion criteria were selected by drawing lots from the population with the method of nonprobability random sampling. The patients were divided into three groups: group I, "game-based core stabilization exercise training"; group II, "biofeedback program"; and group III, "game-based core stabilization exercise training in addition to the biofeedback program." The Dysfunctional Voiding and Incontinence Symptom Scale (DVISS) scores and uroflowmetry values of the patients were evaluated before and after the treatment. RESULTS: The mean age of the participants was 8.81 ± 2.08 years. There was a statistically significant difference between the pretreatment and post-treatment DVISS scores in all three groups (p < .05). However, no significant difference was found among the groups. There was no statistically significant difference in the uroflowmetry results of the patients in group I and II before and after the treatment. In group III, the time to maximum flow rate after treatment was significantly reduced, and the average flow rate was significantly increased. CONCLUSIONS: According to the results of this study, the use of game-based exercises along with biofeedback treatment may reduce DVISS scores in children with non-neuropathic bladder dysfunction. A combination of the two methods may have positively affected the uroflowmetry results of the patients. We think that game-based exercises will contribute to the literature as a new treatment option in the treatment of non-neuropathic bladder dysfunction.

Comparison of Urinary Tract Dilatation and Society of Fetal Urology systems in the detection of vesicourethral reflux and renal scar.

PURPOSE: The presence and degree of hydronephrosis is very important in the management of many diseases of the urinary tract. In this study, we aim to compare the sensitivity and specificity of 2 classification systems that are used for hydro-nephrosis grading in ultrasound, for reflux and scar detection. The classification systems were the Society of Fetal Urology (SFU) and Urinary Tract Dilatation (UTD). MATERIAL AND METHODS: Ultrasounds and dimercaptosuccinic acid scintigraphies (DMSA) of all patients who underwent voiding cystourethrogram (VCUG) due to urinary tract infection were examined retrospectively. DMSA was accepted for scar detection and VCUG for reflux detection as reference methods. SFU classification was used for hydronephrosis in ultrasound reports, and UTD classification was made over the reports. Sensitivity, specificity, and positive and negative predictive values of UTD and SFU classification systems for reflux and scar detection were calculated, and these 2 systems were compared. RESULTS: 103 (39%) of the patients were male and 162 (61%) were female. Pathologies were detected in 192 (35%) of 530 kidneys in ultrasound. In 110 (42%) of the children, reflux was detected in VCUG. Scars in DMSA were detected in only 16% (44) of 266 kidneys. Sensitivity, positive and negative predictive values of the UTD classification system were statistically significantly higher than the SFU system for scar and reflux detection (p < 0.01). CONCLUSIONS: If we use the UTD system in ultrasounds of patients with urinary tract infections, children reported as UTD 0 may not need VCUG, which reduces radiation exposure to children and the cost of the diagnostic interventions.

Prevalence estimates of voiding disorders in Turkish school-age children.

OBJECTIVES: This study aims to investigate the prevalence of voiding disorders and identify the associated risk factors for school-age children in East Anatolia, Turkey. METHODS: We randomly selected six primary schools in Malatya in East Anatolia, and 907 students from 6 to 14 years old were involved. Data were obtained using the dysfunctional voiding and incontinence scoring system (DVISS) scale, and children who scored 8.5 or above on that scale were considered as having voiding disorders. RESULTS: Voiding disorders were detected in 175 (19.2%) of 907 children. One hundred and fifty-two (16.8%) had day-time urinary incontinence, and 131 (14.5%) had night-time incontinence. The findings showed a significant relationship between voiding disorder and daytime/night-time incontinence, and fecal incontinence. Voiding disorders decreased as the age increased. There was a significant relationship between voiding disorder and positive family history, and the quality of life of these children was significantly affected. CONCLUSION: Voiding disorder is a common disease among school-age children. By identifying and treating voiding disorders and related risk factors in children in the early period, these children can be protected from possible medical or social complications.

Risk factors and mortality rate in premature babies with acute kidney injury.

BACKGROUND: Acute kidney injury (AKI) is a common morbidity in neonatal intensive care units and associated with poor outcome. This study aimed to determine the prevalence of AKI and provide a demographic data and risk factors associated with the mortality and morbidity. METHODS: This is a retrospective study included 105 premature babies. Diagnosis of AKI was based on neonatal KDIGO classification criteria. The babies were stratified into two groups according to AKI status during the hospitalization. Clinical and laboratory characteristics of the AKI group were compared to non-AKI group. RESULTS: AKI occurred in 21 (20.0%) of 105 premature babies, and mortality rate in these babies was 61.9%. Lower gestational weeks, lower Apgar scores at 5 minutes, lower systolic blood pressures, and inotropic supports were independent risk factors for the development of AKI in preterm babies (P < .05, for each). Oliguria, preeclampsia/eclampsia, resuscitation at birth, lower diastolic blood pressure, patent ductus arteriosus (PDA), inotropic support, and furosemide treatment were associated with the mortality (P < .05, for each). CONCLUSIONS: Prenatal risk factors and medical interventions are associated with AKI, and AKI is associated with increased morbidity and mortality. Therefore, identification of AKI is very important in this vulnerable population and it should be performed as quickly as possible in all babies who are at high risk for developing of AKI.

Platelet Counts in Children With Henoch-Schonlein Purpura--Relationship to Renal Involvement.

BACKGROUND: The aim of this study is to identify the clinical and laboratory risk factors for renal involvement and to determine the relationship between platelet counts and renal involvement in (Henoch-Schönlein purpura) HSP patients. METHODS: We reviewed the medical records of 107 children with HSP according to Eular/Press diagnostic criteria. Clinical and laboratory parameters for renal involvement were evaluated and compared to no renal involvement. RESULTS: A retrospective study consisted of 107 children, 61 boys (57%), and 46 girls (43%). Twenty-eight of the 107 patients (26.1%) had renal involvement. The mean platelet count was significantly higher in patients with renal involvement when compared to patients without renal involvement (P = 0.001). The multivariate logistic regression analysis identified that age (P = 0.022), sex (P = 0.037), gastrointestinal involvement (P = 0.019), and platelet count (P = 0.019) were significantly associated with the renal involvement of HSP. The platelet count was predictive of renal involvement, which had odds ratio of 1.0, and achieved area under the curve of 0.66 for predicting the renal involvement within the acute stage of HSP (P = 0.009). CONCLUSION: Our study indicated that age, sex, gastrointestinal involvement, and platelet count were significant risk factors of renal involvement of HSP.

Evaluation of hypertension by ambulatory blood pressure monitoring in children with solitary kidney.

In this study, we aimed to investigate the blood pressure (BP) profile in children with a unilateral functioning solitary kidney (UFSK). A group of 49 patients between the ages of 5 and 18 years, and 30 healthy controls between the ages of 6 and 16 years were investigated. Gender, weight, height and body mass index (BMI) of patients and controls were recorded. BP profile was determined by ambulatory BP monitoring (ABPM). We have observed a higher risk of hypertension compared with healthy children. Also, masked hypertension is more frequently in the patients group and white-coat hypertension was observed in the control group. The mean night-time systolic BP (SBP) load (p = 0.01) and 24-h diastolic BP (DBP) load (p = 0.008) of children with multicystic dysplastic kidney (MCDK) was significantly higher than the healthy group. The mean night-time SBP load (p = 0.001) of children with unilateral renal agenesis (URA) and 24-h DBP load (p = 0.003) of children with unilateral atrophic or hypoplastic kidney were significantly higher than healthy group. We showed that the children with a solitary kidney had increased risk of hypertension. ABPM reflects the BP profile more precisely than casual BP measurement and it can be used to evaluate white-coat and masked hypertension in children with a solitary kidney.

Evaluation of renal functions in preterm infants with respiratory distress syndrome.

BACKGROUND: The aim of this prospective study was to evaluate urinary glutathione S transferases π (GST-π), beta-2-microglobulin (B2-MG), and N-acetyl-ß-d-glucosaminidase (NAG) levels as markers revealing the effect of respiratory distress syndrome (RDS) on renal function in preterm infants. METHODS: The study was performed with 76 preterm infants whose gestational ages were between 28 and 32 weeks. Twenty-six preterm infants with RDS (cases) and 50 preterm infants without RDS (controls) enrolled in the study. Blood and urine samples were obtained on postnatal (PN) day 3 and 30. Urinary GST-π levels were measured by enzyme-linked immunosorbent assay (ELISA), and urinary B2-MG levels were determined by nephelometric method. RESULTS: There was no significant difference in urinary B2-MG and GST-π levels between RDS and non-RDS groups on PN day 3 (P > 0.05 for each). However, preterm infants with RDS had significantly higher urinary B2-MG and GST-π levels than the control group on PN day 30 (P = 0.0001 and P = 0.031, respectively). Urinary NAG levels were higher in RDS group than those of the controls on both PN day 3 and 30, but these findings were not statistically significant (P > 0.05, for each). CONCLUSION: Preterm infants with RDS had increased levels of both GST-π and B2-MG levels on PN day 30, suggesting subclinical tubular dysfunction, probably secondary to hypoxic stress.

Determination of reference values for urinary neutrophil gelatinase-associated lipocalin in premature infants.

BACKGROUND: The aim of this study is to determine the reference values of urinary neutrophil gelatinase-associated lipocalin (uNGAL) in healthy very preterm infants. METHOD: The study was performed on 30 preterm infants whose gestational ages (GA) were between 28 and 34 weeks. They were divided into three groups according to the GA as group 1: GA 28-29 weeks, group 2: 30-32 weeks and group 3: 33-34 weeks. Blood and urine samples were obtained on postnatal (PN) days 1 and 7. uNGAL was measured by ELISA. RESULTS: There were 10 preterm infants for each group. The median values of uNGAL on PN Days 1 were 19.80 (8.6-25.7) ng/ml, 9.25 (1.42-30.3) ng/ml, and 7.95 (1.60-27.8) ng/ml in group 1, group 2 and group 3, respectively. Multivariate linear regression analysis showed that uNGAL values are not associated with GA, birth weight, and gender in preterm infants on PN Days 1 and 7. CONCLUSION: Our study indicated that normal values of uNGAL concentrations in healthy very preterm infants, and older children or adults are similar preterm infants.

Reference intervals of serum cystatin C for determining cystatin C-based glomerular filtration rates in preterm neonates.

OBJECTIVE: The aim of this study is to determine the reference values of serum Cystatin C (CysC) and CysC-based estimated glomerular filtration rate (GFR) on the 3rd and 30th day of life in comparison with serum creatinine (Cr) and Cr-based estimated GFR. METHODS: This prospective study was performed on 52 preterm neonates whose gestational ages were between 28 and 34 weeks. Preterm neonates were divided into three groups according to the gestational age as follows: gestational week of 28-29 (group 1), gestational week of 30-32 (group 2) and gestational week of 33-34 (group 3). Blood samples were obtained on the 3rd and the 30th days of life. CysC was determined by particle-enhanced nephelometric immunoassay. RESULTS: The group 1 preterm neonates have higher CysC values (1.34 ± 0.1 mg/L) on the 3rd day of life than the group 2 (1.28 ± 0.2 mg/L) and the group 3 (1.24 ± 0.2 mg/L) but the differences were not significant (p > 0.05, for each). CysC values were independent of gestational age, birth weight and gender (p > 0.05, for each). No correlation was found between CysC and Cr on the 3rd day of life (p > 0.05). CONCLUSIONS: CysC is regarded as an alternative for assessing the renal function in preterm neonates.

Short- and long-term efficacy of levamisole in children with steroid-sensitive nephrotic syndrome.

PURPOSE: In this study, we aimed to evaluate short- and long-term effects of levamisole therapy in steroid-sensitive nephrotic syndrome (SSNS) in children. METHODS: The study consisted of 29 SSNS patients who had been treated with levamisole for 12 months. Laboratory values and clinical data were analyzed for three separate periods for each patient: 1 year prior to the initiation of levamisole therapy (Pre-Lev), during 1 year of levamisole therapy (During-Lev), and the year following cessation of levamisole therapy (End-Lev). RESULTS: The level of proteinuria fell from median 135.0 (24.0-633.0) mg/h/m(2) Pre-Lev to median 4.4 (2.4-654.0) mg/h/m(2) During-Lev and median 4.8 (2.2-105.0) mg/h/m(2) End-Lev (p = 0.0001, for each). Median relapse frequency fell from 4.0 (3.0-8.0) relapses/patient per year Pre-Lev to 0.0 (0.0-2.0) During-Lev (p = 0.0001) with 23/29 patients having no relapse and 0.0 (0.0-1.0) End-Lev (p = 0.0001) with 18/29 patients without relapse. During-Lev, all children had marked diminution in annual steroid burden from a median of 5582.0 (2137.0-17340.0) mg/m(2) per year Pre-Lev to 2166.0 (840.0-9325.0) mg/m(2) per year (p = 0.0001). End-Lev, the annual steroid burden also continued to fall, to 0.0 (0.0-5386.0) mg/m(2) per year (p = 0.0001). The age and duration of NS were significantly higher in the children with relapses than in the children with sustained remission (p = 0.009 and p = 0.014, respectively). The side effects that are expected during levamisole therapy did not occur in our patients. CONCLUSION: Thus, our study showed that levamisole is a safe and effective steroid-sparing agent, with long-lasting effect even 12 months after withdrawal.

Serum cystatin C predicts acute kidney injury in preterm neonates with respiratory distress syndrome.

BACKGROUND: We aimed to compare serum cystatin C levels (sCysC) in preterm neonates with respiratory distress syndrome (RDS) with a control group and to investigate whether it could be used as a predictor for acute kidney injury (AKI). METHODS: sCysC was measured in 62 neonates with RDS (n = 28) and control neonates without RDS (n = 34), whose gestational ages (GA) were between 27 and 29 weeks (subgroup 1) and 30-32 weeks (subgroup 2). AKI was defined as oliguria and/or increase of serum creatinine. Blood samples were obtained on postnatal days (PND) 3 and 30. sCysC levels were determined by particle-enhanced nephelometric immunoassay. RESULTS: There were six neonates with AKI (RDS-AKI subgroup) and 22 neonates without AKI (RDS-no AKI subgroup) during the first 7 days. Although sCysC levels were lower in neonates with RDS than controls on PND3 in both GA subgroups, the differences were not significant. However, in neonates with RDS and AKI, sCysC levels were significantly higher than neonates with RDS but no AKI and neonates in the control group on PND3. sCysC level was found to have a statistically significant association with AKI development in preterm neonates with RDS. CONCLUSIONS: sCysC is an independent predictor of AKI in preterm neonates with RDS.

Clinical features of children with Henoch-Schonlein purpura: risk factors associated with renal involvement.

INTRODUCTION: This study aimed to evaluate renal involvement and factors affecting the prognosis in patients with Henoch-Schonlein purpura (HSP). MATERIALS AND METHODS: The outcomes of 107 children diagnosed with HSP who had been followed up for at least 6 months were reviewed. RESULTS: Renal involvement was observed in 26.1% of the patients. The mean age of the patients with renal involvement was 8.8 ± 4.0 years as compared to 7.1 ± 2.9 years in the patients without renal involvement (P = .02). The risk of renal involvement was found to be significantly higher in the patients who were 10 years old and over (P < .001). In the group with renal involvement, the frequency of scrotal involvement was significantly higher than that of the group without renal involvement (P = .02). The mean serum immunoglobulin A level of the patients with renal involvements was significantly higher (P = .04) and the mean serum complement C3 levels was significantly lower (P = .04) than those of the patients without renal involvement. None of the patients with renal involvement reached end-stage kidney failure. No significant relationship was observed between the development of renal involvement and early steroid treatment. CONCLUSIONS: This study proposes that in old children with HSP, elevated serum immunoglobulin A levels, decreased serum complement C3 levels, and scrotal involvement are associated with renal involvement. We failed to find any effect of steroid treatment on development of renal involvement.