Publications by authors named "Umut Bayrakci"

Peritoneopericardial leakage is a rare but important complication of peritoneal dialysis. Peritoneal scintigraphy is reported to be effective in diagnosing the peritoneopericardial communication. Although switching to hemodialysis is commonly recommended, reducing exchange volumes and performing peritoneal dialysis in an upright sitting position may also be considered particularly in pediatric patients.

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Background: Studies suggest that asthma and hypertension may be comorbid conditions. Most of these studies are epidemiological research. However, data on the relationship between asthma and hypertension in childhood are limited.

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Background: Acute kidney injury (AKI) is a common and important complication of burn injury. Although there are numerous adult studies, data regarding AKI in pediatric burn patients are scarce. Here, we aimed to evaluate the frequency, clinical features, and prognosis of AKI among pediatric burn injury patients.

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Article Synopsis
  • Two devastating earthquakes in Türkiye on February 6, 2023, resulted in significant injuries to 903 children, with a focus on crush syndrome-related acute kidney injury (Crush-AKI) and mortality.
  • The study tracked various factors, including the time under rubble, treatment protocols, and patient outcomes, revealing that Crush-AKI developed in 36% of the patients, and over half required dialysis.
  • Key findings included that serum levels of creatine phosphokinase above 20,950 U/L and inadequate initial intravenous fluid volume were linked to Crush-AKI, and most deaths occurred among those with Crush-AKI within the first four days of admission.
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  • Acute kidney injury (AKI) is a significant risk in pediatric patients undergoing hematopoietic stem cell transplantation (HSCT), with a 16.9% incidence rate and a concerning link to higher mortality and morbidity.
  • A study of 278 patients identified key risk factors for AKI, including older age, certain complications like sinusoidal obstruction syndrome and hemorrhagic cystitis, and the use of nephrotoxic drugs like calcineurin inhibitors.
  • The findings highlight the urgent need for early detection and management strategies to reduce AKI-related risks and improve patient outcomes in children after HSCT.
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Background: Immunoglobulin A vasculitis with nephritis (IgAVN) is the most serious complication affecting long-term prognosis. Understanding the risk factors and markers for the development of IgAVN is essential. The aim of this study is to identify IgAVN-associated factors and to evaluate the usability of Pediatric Vasculitis Activity Score (PVAS) at diagnosis as an early marker for the development of IgAVN.

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Background: Children with chronic kidney disease and on kidney replacement therapy may have neurocognitive and psychosocial disorders. Although kidney transplantation improves quality of life, psychological problems may exist in children who undergo kidney transplantation. Herein, we aimed to investigate attention-deficit hyperactivity disorder-like symptoms with MOXO-continuous performance test in children with pre-dialysis chronic kidney disease, dialysis and kidney transplantation.

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Background: Recently, recessive mutations in SGPL1 (sphingosine-1-phosphate lyase), which encodes the final enzyme of sphingolipid metabolism, have been reported to cause steroid-resistant nephrotic syndrome, adrenal insufficiency, and many other organ/system involvements. We aimed to determine the clinical and genetic characteristics, and outcomes in patients with SGPL1 mutations.

Methods: The study included 6 patients with bi-allelic SGPL1 mutation.

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  • This study examined parathyroid hormone (PTH) levels and phosphate balance in 589 patients with Bartter and Gitelman syndromes, which are conditions that cause salt loss from the kidneys.
  • It found that 56% of patients with Bartter syndrome type I and II had elevated PTH levels, indicating frequent hyperparathyroidism, which was linked to lower serum calcium levels.
  • Additionally, 22% of the patients had low serum phosphate levels, particularly those with Bartter syndrome type III, suggesting renal phosphate wasting as a common issue in these syndromes.
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Background: Proteinuria (both tubular and glomerular in origin) and its implications are well-known features of adult patients with COVID19. However currently studies addressing proteinuria and its role in the outcome of kidney and patients of pediatric COVID 19 is scarce. We aimed to evaluate the presence of microalbuminuria in order to detect early renal involvement in pediatric COVID 19 patients.

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Objective: Although the initial reports of COVID-19 cases in children described that children were largely protected from severe manifestations, clusters of paediatric cases of severe systemic hyperinflammation and shock related to severe acute respiratory syndrome coronavirus 2 infection began to be reported in the latter half of April 2020. A novel syndrome called "multisystem inflammatory syndrome in children" (MIS-C) shares common clinical features with other well-defined syndromes, including Kawasaki disease, toxic shock syndrome and secondary hemophagocytic lymphohistiocytosis/macrophage activation syndrome. Our objective was to develop a protocol for the evaluation, treatment and follow-up of patients with MIS-C.

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Introduction: Biological drugs are currently used for the treatment of chronic inflammatory, autoimmune, and neoplastic diseases. With their expanding indication spectrum and increasing use, hypersensitivity reactions to these drugs are also becoming more frequent. The present study aimed to report the incidence and the features of such reactions in pediatric patients using biologicals for the treatment of various diseases.

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Aims: Severe reduction in nephron numbers that are characteristic of renal hypodysplasia (RHD) are one of the cause of childhood chronic kidney disease (CKD). Glomerular hyperfiltration, glomerular hypertrophy, progressive glomerular scarring, and interstitial fibrosis due to reduced nephron number are risk factors for CKD. In recent years, studies on specific markers for early diagnosis of renal failure and mortality have been carried out.

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Autoimmune pancreatitis (AIP) type 1 is an IgG4-related disease (IgG4-RD), characterized by inflammatory pseudotumors and histologically by dense lymphoplasmacytic infiltrates rich in IgG4 positive plasma cells, storiform fibrosis, and obliterative phlebitis. Although quite rare, IgG4-RD was found to be associated with medium or small vessel vasculitides. A new overlap syndrome between IgG4-RD and ANCA-associated vasculitis (AAV) has recently been described in the adult population.

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Background: Acute intermittent porphyria (AIP) is a rare, hereditary, metabolic disease caused by a defect in heme biosynthesis. Hormonal changes may trigger porphyria attacks.

Case: Here we present a 17 -year- old adolescent refugee mother who applied to the pediatric emergency department with the complaint of diffuse abdominal pain at puerperium.

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