Publications by authors named "Frank Schwarm"

Objective: The ventriculoperitoneal shunt (VPS) is an established approach in treating normal pressure hydrocephalus (NPH). This study aims to examine the long-term effects of VPS regarding clinical and radiological outcomes, to explore interdependencies with comorbidities and medication, and to determine a suitable opening pressure of the programmable valve.

Methods: 127 patients with VPS were retrospectively evaluated.

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Objectives: Intrathecal morphine pump (ITMP) infusion therapy is efficient in managing chronic pain refractory to standard treatment. This study evaluates pain relief and improvement of quality of life in chronic pain patients after intrathecal morphine pump implantation for treatment of persistent pain after lumbar spinal fusion surgery and lumbar spinal decompression alone.

Methods: Forty three chronic pain patients that received an ITMP at our department between 2009 and 2019 were retrospectively analyzed divided into 2 cohorts (lumbar spinal fusion surgery and lumbar spinal decompression alone).

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Background: High-mobility group AT-hook protein 2 (HMGA2) is a gene regulatory protein that is correlated with metastatic potential and poor prognosis. It has been shown that HMGA2 is overexpressed in various tumors such as lung cancer or pancreatic cancer. The invasive character and highly aggressive structure of glioblastoma let us to investigate HMGA2 expression in the border zone of the tumor more closely.

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Background: Paediatric hydrocephalus is a result of a dysfunction of cerebrospinal fluid circulation, and it has diverse pathogeneses. This study investigates the epidemiology of paediatric hydrocephalus, as well as the influences of primary aetiology and implant type on treatment complications and the development of new therapeutic approaches and strategies.

Methods: Between 2013 and 2018, a retrospective analysis of 131 children, who were suffering from hydrocephalus, was conducted.

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Objective: To evaluate the neurological and neurophysiological outcomes of retractor-endoscopic versus open release in carpal tunnel syndrome (rCTS and oCTS, respectively) and cubital tunnel syndrome (rCbTS and oCbTS, respectively) at 3- and 12-month follow-up.

Methods: Between 2013 and 2017, 80 patients were prospectively blindly randomized. McGowan scores were used for preoperative grading and outcomes were assessed using a modified Bishop rating system (BRS).

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The present study investigated the expression of epithelial-mesenchymal transition (EMT)-related factors zinc finger E-box-binding homeobox 1 (ZEB1), cadherin-1 (CDH1), cadherin-2 (CDH2) and the cell cycle modulating kinase cyclin-dependent kinase 1 (CDK1) in human glioblastoma (GBM) compared to normal brain tissue, as well as whether the levels of expression were associated with the overall and progression-free survival of the GBM patients. In 44 GBM and five normal brain tissue specimens, the expression levels of ZEB1, CDH1, CDH2 and CDK1 were evaluated by real-time PCR and immunostaining, and the results were correlated with clinical data. The expression levels of all investigated genes as detected by immunostaining were significantly higher in the GBM when compared to the normal brain tissues.

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Article Synopsis
  • The text discusses two cases of patients who developed Thrombotic Thrombocytopenia Syndrome (TTS) and Cerebral Venous Sinus Thrombosis (CVST) after receiving the AstraZeneca COVID-19 vaccine.
  • Both patients initially presented with severe headaches and low platelet counts, but early MRI scans did not show any signs of CVST.
  • Subsequent imaging revealed CVST in one patient after persistent headaches, and both patients received treatments that improved their platelet counts and resolved the blockage in one case.
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Glioblastoma multiforme (GBM) is the most common malignant brain tumour in adults. The poor prognosis and short median overall survival of patients with GBM is associated with resistance to therapy after surgical and adjuvant treatment. The expression of various acetylcholine receptors (AChR) in GBM has been widely reported.

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Objective: Peripheral nerve field stimulation (PNFS) is an effective alternative treatment for patients with chronic low back pain. The treatment of low back pain strongly depends on psychological factors like anxiety, depression, and mental stress. The aim of this study was to evaluate the impact of such factors on outcome measures after lead- and implantable pulse generator-implantation.

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Objective: Peripheral nerve field stimulation (PNFS) is an effective alternative treatment for patients with chronic low back pain. Transcutaneous electrical nerve stimulation (TENS) is frequently used in pain therapy. Aim of this prospective study was to examine the predictive value of TENS for later PNFS treatment.

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Objective: The aim of this study was to report on the use of laparoscopic implantation of leads on the branches of the sacral plexus for neuromodulation in the treatment of chronic pelvic pain (CPP) in a multidisciplinary setting with the help of electrophysiological neuromonitoring.

Materials And Methods: Between 2012 and 2019, six female patients complaining of chronic pain and bladder and bowel dysfunctions underwent laparoscopic exposure and nerve identification with the help of electrophysiological neuromonitoring. A lead was placed laparoscopically in direct contact with the affected nerve.

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Background: Vasospasm, delayed ischemic neurologic deficit (DIND), and ischemic brain lesions after acute subarachnoid hemorrhage (SAH) are associated with increased morbidity and mortality. The purpose of this study was to analyze age cutoffs for vasospasm, DIND, and ischemic brain lesions after SAH.

Methods: This study included 292 aneurysmal SAH patients from January 2005 to December 2015.

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Purpose: We report five rare cases of programmable valve breakage (Codman Hakim-Medos valve) in shunt systems of children with posthemorrhagic hydrocephalus. Only four similar studies have been published in the current literature.

Methods: Between 2013 and 2018, five children with posthemorrhagic hydrocephalus were admitted to the pediatric department.

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Background and aims Complex regional pain syndrome (CRPS) is a common pain condition which is characterized by pain, functional impairment, and trophic changes. Neurosurgical treatment is not widely offered. In this study the treatment with spinal cord stimulation (SCS) was evaluated over 24 months follow up.

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Background:  Insertion of a frontal external ventricular drain (EVD) is a common emergency procedure in neurosurgery. Malpositioning of the EVD and/or triggering a new intracerebral or intraventricular hemorrhage (nICVH) are typical complications. The standard procedure (SP) uses a tape measure to identify the Kocher's point for placement of a frontal burr hole.

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Objective: Transcutaneous electrical nerve stimulation (TENS) and peripheral nerve field stimulation (PNFS) may be proposed to patients with chronic lumbar pain refractory to conventional treatment. Aim of this study was to assess the importance of preoperatively treatment with TENS as a predictive value for later successful PNFS and impact of PNFS in follow-up of 12 months.

Methods: Between 2012 and 2016, a retrospective analysis of 25 patients with chronic lumbar pain and implantation of a PNFS-system was performed.

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Aim: The N-myc down-regulated gene (NDRG) family is a group of genes that have predominantly tumor-suppressive effects. The goal of this study was to investigate the expression of NDRG2 and NDRG4 in surgical specimens of human glioblastoma and in normal brain tissue, and to search for correlations with overall (OS) and progression-free survival (PFS).

Materials And Methods: Samples from 44 patients (31 males, 13 females; mean age±SD=57.

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High-mobility group AT-hook protein 2 (HMGA 2) is a transcription factor associated with malignancy and poor prognosis in a variety of human cancers. We correlated HMGA 2 expression with clinical parameters, survival, and O-6-methylguanine-DNA methyltransferase methylation status (MGMT) in glioblastoma patients. HMGA 2 expression was determined by performing quantitative real-time polymerase chain reaction (qPCR) and immunohistochemistry (IHC) in 44 glioblastoma patients and 5 non-tumorous brain specimens as controls.

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