Pediatric kidney care experience after the 2023 Türkiye earthquake.

BACKGROUND: Two earthquakes on 6 February 2023 destroyed 10 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: Web-based software was prepared. Patient demographics, time under rubble (TUR), admission laboratory data, dialysis, and kidney and overall outcomes were recorded. RESULTS: A total of 903 injured children (median age 11.62 years) were evaluated. Mean TUR was 13 h (interquartile range 32.5, max 240 h). Thirty-one of 32 patients with a TUR of >120 h survived. The patient who was rescued after 10 days survived. Two-thirds of the patients were given 50 mEq/L sodium bicarbonate in 0.45% sodium chloride solution on admission day. Fifty-eight percent of patients were given intravenous fluid (IVF) at a volume of 2000-3000 mL/m2 body surface area (BSA), 40% at 3000-4000 mL/m2 BSA and only 2% at >4000 mL/m2 BSA. A total of 425 patients had surgeries, and 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). In all, 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. Twenty-two deaths were recorded, 20 of 22 occurring in patients with Crush-AKI and within the first 4 days of admission. All patients admitted after 7 days survived. CONCLUSIONS: These are the most extensive pediatric kidney disaster data obtained 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 associated 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.

Characteristics and predictors of chronic kidney disease in children with myelomeningocele: a nationwide cohort study.

BACKGROUND: Myelomeningocele (MMC) is highly prevalent in developing countries, and MMC-related neurogenic bladder is an important cause of childhood chronic kidney disease (CKD). This nationwide study aimed to evaluate demographic and clinical features of pediatric patients with MMC in Turkey and risk factors associated with CKD stage 5. METHODS: Data from children aged 0-19 years old, living with MMC in 2022, were retrospectively collected from 27 pediatric nephrology centers. Patients > 1 year of age without pre-existing kidney abnormalities were divided into five groups according to eGFR; CKD stages 1-5. Patients on dialysis, kidney transplant recipients, and those with eGFR < 15 ml/min/1.73 m2 but not on kidney replacement therapy at time of study constituted the CKD stage 5 group. RESULTS: A total of 911 (57.8% female) patients were enrolled, most of whom were expectantly managed. Stages 1-4 CKD were found in 34.3%, 4.2%, 4.1%, and 2.4%, respectively. CKD stage 5 was observed in 5.3% of patients at median 13 years old (range 2-18 years). Current age, age at first abnormal DMSA scan, moderate-to-severe trabeculated bladder on US and/or VCUG, and VUR history were independent risk factors for development of CKD stage 5 (OR 0.752; 95%; CI 0.658-0.859; p < 0.001; OR 1.187; 95% CI 1.031-1.367; p = 0.017; OR 10.031; 95% CI 2.210-45.544; p = 0.003; OR 2.722; 95% CI 1.215-6.102; p = 0.015, respectively). Only eight CKD stage 5 patients underwent surgery related to a hostile bladder between 1 and 15 years old. CONCLUSION: MMC-related CKD is common in childhood in Turkey. A proactive approach to neurogenic bladder management and early protective surgery in selected cases where conservative treatment has failed should be implemented to prevent progressive kidney failure in the pediatric MMC population in our country.

Risk factors for development of urinary tract infection in children with nephrolithiasis.

AIM: Nephrolithiasis is one of the causes of urinary tract infection (UTI). In this study, we investigated risk factors for UTI in children with nephrolithiasis. METHODS: The data from the patients with nephrolithiasis were evaluated in this retrospective follow-up study. Patients with a history of UTI before admission and congenital anomaly of kidney or urinary tract were excluded. The patients were divided into two groups: patients with UTI (recurrent UTI and single UTI) and patients without UTI. RESULTS: A total of 599 patients were included in this study. UTI occurred in 181 (30.2%) patients. There was a positive association between the size of stone and UTI (odds ratio (OR): 1.355, P = 0.007). Receiver operating characteristic curve analysis showed that the cut-off value of the size of stone for UTI was 5.3 mm, with a sensitivity of 74.9% and a specificity of 66.1% (area under the curve: 0.572 ± 0.028, P = 0.013). The presence of a metabolic risk factor and age at diagnosis under 2 years were significantly associated with both UTI and recurrence of UTI (OR: 2.272, P = 0.021, OR: 1.809, P = 0.028, respectively, for metabolic risk factor; OR: 1.212, P = 0.041, OR: 1.122, P = 0.046, respectively, for age at diagnosis under 2 years). Hypercalciuria was significantly associated with the recurrence of UTI (OR: 1.854, P = 0.017). CONCLUSIONS: The age at diagnosis, the presence of a metabolic risk factor and size of stone are significant risk factors for UTI in children with nephrolithiasis. The patients with idiopathic hypercalciuria, metabolic risk factor and age at diagnosis under 2 years have increased risk of recurrence of UTI.

Assessment of Caregiver Burden, Depression and Quality of Life Levels Among Mothers of Children with Chronic Kidney Disease.

BACKGROUND: The causes of mental health problems among mothers of children with chronic kidney diseases (CKD) associated with childcare are still not fully understood. This study, thus, has aim to assess the intensity of caregiver burden, depression and quality of life levels in mothers of children with CKD compared to a control group. It also aims to identify determinants associated with mental health outcomes. METHODS: Mothers of children diagnosed with CKD who were followed up in Pediatric Nephrology outpatient clinics were included as the case group. Mothers with similar demographic characteristics were taken as the control group. During the study, 72 children with CKD, 78 control children and their mothers were enrolled. The study data was obtained using the Sociodemographic Data Form (SDF) developed by the researchers, the Zarit Burden Interview (ZBI), the Beck Depression Inventory (BDI), and The World Health Organization Quality of Life (WHOQOL-Bref). RESULTS: The groups did differ significantly in terms of maternal psychopathology (p = .024). The most common maternal psychopathology among mothers was Major Depressive Disorder. Mothers of children with CKD had significantly higher level of caregiver burden and depression levels. Quality of life levels among mothers of children with CKD were significantly decreased compared to controls. Caregiver burden was found to predict quality of life in mothers of children with CKD (ß = -0.539; p < .050). CONCLUSION: Caregiving burden, depression, and poor quality of life are common among mothers of children with CKD. Addressing caregiver burden may be beneficial for quality life of mothers.

Serum Presepsin, Proadrenomedullin andTriggering Receptor Expressed on Myeloid Cells-1 (TREM-1) as Biomarkers for the Diagnosis of Acute Pyelonephritis.

OBJECTIVE: To investigate the diagnostic values of serum presepsin, proadrenomedullin (proADM) and triggering receptor expressed on myeloid cells-1 (TREM-1) levels in children with acute pyelonephritis and lower urinary tract infection. METHODS: Peripheral venous blood and urine samples were obtained before starting antibiotic therapy at the time of admission in all patients. Serum TREM-1, presepsin and proADM concentrations were determined by the enzyme-linked immunosorbent assay method. RESULTS: 82 children (38 acute pyelonephritis, 24 lower urinary tract infection, 20 controls) were enrolled. Serum proADM and TREM-1 levels were higher in patients with acute pyelonephritis than those of lower urinary tract infection and controls (P=0.001 and P<0.001, respectively). Both serum proADM and TREM-1 levels had predictive value for diagnosis of acute pyelonephritis (P=0.006 and P<0.001, respectively). ROC analysis showed that proADM and TREM-1 had positive predictive values for diagnosis of acute pyelonephritis (AUC=0.830, P=0.003; and AUC=0.843, P<0.001, respectively). CONCLUSIONS: Serum proADM and TREM-1 levels could serve as early biomarkers for the diagnosis of acute pyelonephritis in children.

Transforming Growth Factor-Beta 1 and Endoglin Levels in Congenital Solitary Functioning Kidney.

INTRODUCTION: Glomerular hyperfiltration leads to hypertension, microalbuminuria, and impaired renal function in children with congenital solitary functioning kidney (cSFK). The purpose of this study was to investigate the associations between serum transforming growth factor ß-1 (TGF) and endoglin levels and hypertension, renal function or microalbuminuria in children with cSFK. MATERIALS AND METHODS: 63 patients and 36 controls were included in the study. Serum endoglin and TGF-ß1 level was measured using ELISA commercial kits. RESULTS: Serum TGF-ß1 and endoglin levels were higher in patients than those of controls (P = 0.04 and P < 0.001, respectively). The prevalence of hypertension was found to be 45.6%. There was a positive association between endoglin levels and the presence of masked hypertension (odds ratio: 1.121, P = 0.04). TGF-ß1 and endoglin levels were positively associated with microalbuminuria (OR: 1.17, P = 0.04; OR: 1.836, P = 0.01). ROC curve analysis showed that serum endoglin and TGF-ß1 levels had predictive value for microalbuminuria (cut-off value: 4.86 ng/mL, sensitivity: 94.7%, specificity: 54.5%, area under the curve ± standard error [AUC ± SE]: 0.888 ± 0.025, P = 0.01 for endoglin; cut-off value 561.24 pg/mL, sensitivity: 89.5%, specificity: 73%, AUC ± SE: 0.995 ± 0.334, P = 0.02 for TGF-ß1). There were no significant relationships between glomerular filtration rate and serum TGF-ß1 or endoglin levels. CONCLUSIONS: Endoglin and TGF-ß1 may play an important role in the pathophysiology of microalbuminuria in cSFK. Endoglin may have a role in the development of hypertension in children with cSFK.

Bone mineral density and vitamin D status in children with remission phase of steroid-sensitive nephrotic syndrome.

Children with idiopathic nephrotic syndrome are primarily treated with glucocorticoids (GCs), but long-term GC use can lead to undesired side effects. We investigated the bone mineral density (BMD) and 25-hydroxyvitamin D (25-OH D) levels in children with the remission phase of steroid-sensitive nephrotic syndrome (SSNS). This study included 32 patients with SSNS who had not received GC treatment in the last 6 months and a control group of 20 healthy children. Serum levels of calcium, phosphate, alkaline phosphatase, 25-(OH)D, and parathyroid hormone (PTH) were measured. BMD was determined in the lumbar spinal region using dual-energy X-ray absorptiometry (DEXA). Serum 25-(OH)D levels were lower in the SSNS patients than in the healthy children (P <0.05), with 22 patients (68.8%) having Z-scores <-1. The Z-scores were positively correlated with 25-(OH)D levels (r = 0.424, P <0.05). PTH levels were higher in patients with osteoporosis than in patients with Z-scores ≥-1 (P <0.05). Bone mineral content and BMD were positively correlated with the age of diagnosis (P <0.01). Receiver-operating characteristic curve analysis showed that the cutoff value of 25-(OH)D levels for predicting low BMD was 14.67 ng/mL with a sensitivity of 90% and a specificity of 64%. The area under the curve (AUC ± standard error) was 0.868 ± 0.064 (95% confidence interval: 0.742-0.994, P = 0.001). Decreased 25-(OH)D levels and the negative effects of long-term GC treatment on BMD persist in SSNS remission phase. Levels of 25-(OH)D <14.67 ng/mL could predict abnormal DEXA scans in children with SSNS remission phase.