Publications by authors named "Guido Fitze"

Background: Unstable diametaphyseal radius fractures (DMRFs) can be prone to complications, and treatment strategies are heterogeneous. Studies are difficult to interpret as definitions of the diametaphyseal junction zone (DMJZ) are impractical for clinical use, imprecise, or prone to error.

Methods: We introduce the forearm fracture index (FFI) to define DMRFs in radiographs and ultrasound.

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Background: Several studies have advocated the use of ultrasound to diagnose distal forearm fractures in children. However, there is limited data on the diagnostic accuracy of ultrasound for distal forearm fractures when conducted by pediatric surgeons or trainees who manage orthopedic injuries in children. The objective of this study was to determine the diagnostic accuracy of point-of-care ultrasound (POCUS) for pediatric distal forearm fractures when conducted by pediatric surgeons and trainees after minimal training.

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The prevalence of posttraumatic olfactory dysfunction in children after mild traumatic brain injury ranges from 3 to 58%, with potential factors influencing this variation, including traumatic brain injury severity and assessment methods. This prospective longitudinal study examines the association between mild traumatic brain injury and olfactory dysfunction in children. Seventy-five pediatric patients with mild traumatic brain injury and an age-matched healthy control group were enrolled.

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Background: The minimally invasive implementations of the established open methods for the correction of primary vesicoureteral reflux have proven to be successful in terms of feasibility and safety. The aim of this study was to investigate to what extent pediatric patients benefit from vesicoscopic operations.

Methods: Between 2010 and 2022, 224 children (359 ureters) underwent ureteral reimplantation for vesicoureteral reflux in our clinic.

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Objective: Mild traumatic brain injury (mTBI) might impair the sense of smell and cognitive functioning. Repeated, systematic exposure to odors, i.e.

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Background: Appendicitis is a frequent condition, with peak incidences in the second decade of life. Its pathogenesis is under debate, but bacterial infections are crucial, and antibiotic treatment remains essential. Rare bacteria are accused of causing complications, and various calculated antibiotics are propagated, yet there is no comprehensive microbiological analysis of pediatric appendicitis.

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Article Synopsis
  • Marfan syndrome (MS) is a genetic disorder characterized by connective tissue abnormalities, often leading to serious cardiovascular problems such as aortic root dilatation, which can require complex surgical interventions.
  • A unique case involved an 18-year-old male with MS undergoing a rare single-stage combined Bentall and modified Ravitch surgery to address both aortic issues and severe pectus excavatum (PEX).
  • A systematic review highlighted the overall safety and effectiveness of this combined surgical approach, noting that while it is underutilized, it shows promise for treating patients with MS, PEX, and aortic aneurysms, with low postoperative mortality and manageable risks.
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A 7-year-old boy presented 6 weeks after open reduction and crossed Kirschner wire (K-wire) fixation of a supracondylar humerus fracture. Previous treatments had restored skeletal anatomy without documented complications. However, the patient would not move the entire arm, including his forearm and hand.

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Background: Human fingertips can regenerate functionally and cosmetically excellent skin and soft tissues. Physiological conditions suppress scar formation and are thus a prerequisite for regenerative healing. Self-adhesive film dressings can provide such favorable conditions.

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Background: Supracondylar humerus fractures (SHF) are the second most common fracture in children and the most common fracture in children under seven years. Subtle neurovascular lesions in displaced SHF may be underdiagnosed clinically, but their sequelae can mean life-long symptoms. Here we show that color-coded duplex ultrasound (DUS) could help to identify these patients.

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For the treatment of vesicoureteral reflux, the introduction of vesicoscopic procedures offers new perspectives for improving patient comfort and quality. Our aim was to examine whether minimally invasive vesicoscopic cross-trigonal ureteral reimplantation (VCUR) would meet expectations. Between 2012 and 2021, 99 girls and 35 boys with high-grade vesicoureteral reflux (VUR) underwent VCUR.

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Introduction:  Adequate patient volume is essential for the maintenance of quality, meaningful research, and training of the next generation of pediatric surgeons. The role of university hospitals is to fulfill these tasks at the highest possible level. Due to decentralization of pediatric surgical care during the last decades, there is a trend toward reduction of operative caseloads.

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Background: In addition to patient-related systemic factors directing the immune response, the pathomechanisms of appendicitis (AP) might also include insufficient drainage leading to inflammation caused by decreased peristalsis. Genetic predisposition accounts for 30%-50% of AP. M.

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Background: Isolated myelosarcoma of infancy is a rare presentation of acute myelogenous leukaemia (AML). Because of its rarity and early onset in infancy underlying genetic predisposition is potentially relevant in disease initiation.

Methods And Results: We report an oncologic emergency in an infant with thoracic and intraspinal aleukaemic myeloid sarcoma causing acute myelon compression and lower leg palsy.

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Article Synopsis
  • The study investigates how HeLa cells respond to UV-induced damage, revealing that over 90% of cells stay viable up to 6 hours post-irradiation but significantly decline in viability after 12-72 hours.
  • The research highlights that the activation of various caspases (key proteins in the cell death process) occurs in a specific sequence after UV exposure, with some being active as early as 1 hour after irradiation.
  • Despite the activation of these caspases, the study finds that inhibiting them does not prevent cell death, suggesting that other mechanisms may also play a crucial role in the cell death process post-UV damage.
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  • The study aimed to identify prenatal indicators to predict complications or surgical needs in fetuses with gastroschisis, improving parental counseling and delivery planning.
  • It analyzed 34 cases of gastroschisis from 2007 to 2017, finding 22 cases of simple and 11 of complex gastroschisis.
  • A specific measurement of intraabdominal bowel dilatation (IABD) at 18 mm was highly effective in predicting simple gastroschisis, whereas extra-abdominal bowel dilatation (EABD) had lower reliability for complex cases.
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  • Human fingertips can regenerate effectively after amputation when using semiocclusive dressings, with no reported infections despite bacterial presence.
  • A novel silicone finger cap was tested on 12 patients, demonstrating successful healing with no complications or nail deformities.
  • Both treatment methods showed excellent outcomes in wound healing, suggesting that bacteria alone do not necessarily lead to infections in such injuries.
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Background: Chondral or osteochondral lesions, post-traumatic contracture and loose bodies of the elbow are often associated with chronic pain, stiffness, repetitive swelling and joint blockages. Therefore, arthroscopy of the elbow is often used in the elderly for the treatment of osteochondral defects or arthrolysis. There are only a few reports and studies about arthroscopic therapy of the elbow in children and adolescents.

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  • Hirschsprung's disease (HSCR) is a congenital condition resulting from a defective intestinal neural system, often leading to intestinal obstruction and inflammation, commonly linked to mutations in the RET gene and other related genes.
  • A study focusing on the IL11 gene revealed no significant association with HSCR through the analysis of 32 single nucleotide polymorphisms (SNPs) in a Caucasian sample, contrasting previous findings in an Asian population.
  • However, a notable association was found with a specific dinucleotide repeat in the IL11 promoter, indicating a potential link between IL11 expression and intestinal inflammation in HSCR patients, particularly those with long-segment HSCR, warranting further research.
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Background: Burkitt lymphoma (BL) in children often presents with abdominal localization. Intestinal perforations have been described mainly during treatment. We report on a three-year-old patient with abdominal BL who was diagnosed with a duodenocolonic fistula.

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  • Fingertip amputation injuries are common and can heal well with conservative treatment, and researchers are exploring the role of bacteria in this healing process.
  • A new silicone finger cap has been developed to create a protective, moist environment for fingertip injuries, instead of traditional film dressings that leak and may cause odor.
  • This pilot study, which is the first randomized controlled trial comparing these two treatments, aims to gather data on the safety and effectiveness of the silicone finger cap for both children and adults with fingertip injuries.
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Foot and ankle fractures represent 12% of all pediatric fractures. Malleolar fractures are the most frequent injuries of the lower limbs. Hindfoot and midfoot fractures are rare, but inadequate treatment for these fractures may results in compartment syndrome, three-dimensional deformities, avascular necrosis and early post-traumatic arthritis, which have a significant impact on overall foot and ankle function.

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HSP90AB1 (heat shock protein 90 kDA alpha, class B, member 1), also known as HSP90beta, is a member of the large family of HSPs which function as molecular chaperones. Chaperones, by binding to client proteins, support proper protein folding and maintain protein stability, especially after exposure to various kinds of cellular stress. Client proteins belong to various protein families including kinases, ubiquitin ligases and transcription factors.

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  • Ionizing radiation (IR) induces fibrosing alveolitis (FA) in rats after an initial lag period, with visible effects starting at 8 weeks post-exposure.
  • At 5.5 weeks after IR, key transcription factors Sp1 and AP-1 are inactivated, leading to the identification of down-regulated genes via a cDNA library and further validation techniques.
  • The molecular chaperone HSP90AB1 is significantly reduced post-IR, while HSP70 is notably up-regulated in mast cells after three months, indicating alterations in chaperone expression that may affect lung cellular functions following radiation damage.
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Mutations and polymorphisms in the RET gene are a major cause of Hirschsprung disease (HSCR). Theoretically, all true heterozygous patients with a new manifestation of a genetically determined disease must have parents with a genetic mosaicism of some extent. However, no genetic mosaicism has been described for the RET gene in HSCR yet.

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