View clinical trials related to Brain Neoplasms.
Filter by:Fluid management during neurosurgery presents a special clinical agenda. Volume overload can have detrimental effects on intracranial pressure by increasing either cerebral blood volume or hydrostatically driven cerebral edema formation. On the other hand, an overt restrictive fluid strategy may risk hemodynamic instability. Recently, dynamic fluid responsiveness parameters such as stroke volume variation (SVV) have been shown as a more precise parameters for fluid management including in neurosurgical patients. The threshold of SVV is reported about 10-15%. In this study, the investigators aim to using two SVV threshold to conduct intraoperative fluid therapy for craniotomy. Randomization will be generated by computer sampling. One of the two groups of patients will be managed with fluid bolus to keep intraoperative SVV <10% presenting the "normovolemia" group. The other group of patients will be kept intraoperative SVV <18% which is slightly above previously reported SVV threshold upper limit. The second group thus presents the "restrictive" group. Clinical outcomes, laboratory analysis including S100-B for neuronal damage and neutrophil gelatinase-associated lipocalin (NGAL) for acute kidney injury, will be compared.
An excellent recovery profile is critical for neurosurgical anesthesia. Rapid awakening, smooth blood pressure and heart rate (HR), a higher degree of coordination, painless or mild pain, as well as better tolerance to endotracheal intubation can avoid can increased intracranial pressure, elevated blood pressure and rapid HR caused by emergency choking, suffocation and agitation, and can reduce postoperative cerebral edema and the risk of bleeding. In addition, it is easy for surgeons to timely evaluate postoperative patients' neurologic function based on the excellent recovery from anesthesia. Up to now, there are many methods and drugs to improve the quality of recovery period, but each of them has some flaws. Dexmedetomidine, an emerging anesthetic adjuvant, exhibits a stable hemodynamic recovery period, and cannot affect evaluation of neurological function with both the sedative and analgesic effects. We propose the following hypotheses: (1) A small dose of dexmedetomidine can be intravenously injected into patients subjected to craniotomy under general anesthesia, in order to improve the recovery profiles and reduce the incidence of emergence agitation. (2) Dexmedetomidine can reduce postoperative pain.
This is a multi-center phase II randomized controlled study to assess the efficacy of Pemetrexed/cisplatin with or without Bevacizumab on patients with brain metastasis from non-small cell lung cancer(NSCLC) harboring EGFR wild type by intracranial PFS(iPFS),also PFS ,DCR and OS.The side effect is evaluated as well.
This is a multi-center phase III randomized controlled study to assess the efficacy of Gefitinib alone and Gefitinib combination with Pemetrexed/platinum on patients with brain metastasis from non-small cell lung cancer(NSCLC) harboring EGFR mutation type by intracranial PFS(iPFS),also PFS ,DCR and OS.The side effect is evaluated as well.
This registry study will evaluate patients with metastatic brain tumors undergoing, or having undergone, stereotactic radiosurgery (SRS) at Swedish Medical Center. Clinical outcomes will be evaluated at the 3, 6 and 12-month time points. Clinical data, SRS treatment data, and imaging data (including anatomic and advanced imaging sequences obtained prior to and serially following SRS) will be archived in an online informatics platform, specifically a metastatic brain tumor registry known as the Comprehensive Neuro-oncology Data Repository for Metastatic Tumors (CONDR - Mets).
This Phase I/II trial studies the ability to stop brain metastases from coming back after treatment with radiosurgery followed by surgical resection. It will also evaluate the side effects of these combined treatments and help determine the best radiosurgery dose. Radiosurgery focuses the x-rays directly to the tumor and cause less damage to the normal tissue in the brain.
In this study the patient will receive either whole brain radiation therapy given by intensity modulated radiation therapy (IMRT) or standard conventional radiation. In IMRT therapy radiation dose to the parts of the brain that do not contain tumors is reduced. This study will look to see if this approach results in less hair loss or fewer memory Problems, as compared to the standard technique. The study will also look at the effectiveness of both techniques in controlling the growth of the tumor.
MicroRNAs (miRNA) are molecular biomarkers that post-transcriptionally control target genes. Deregulated miRNA expression has been observed in diverse cancers. In high grade gliomas, known as glioblastomas, the investigators have identified an oncogenic miRNA, miRNA-10b (mir-10b) that is expressed at higher levels in glioblastomas than in normal brain tissue. This study tests the hypothesis that in primary glioma samples mir-10b expression patterns will serve as a prognostic and diagnostic marker. This study will also characterize the phenotypic and genotypic diversity of glioma subclasses. Furthermore, considering the critical function of anti-mir-10b in blocking established glioblastoma growth, the investigators will test in vitro the sensitivity of individual primary tumors to anti-mir-10b treatment. Tumor, blood and cerebrospinal fluid samples will be obtained from patients diagnosed with gliomas over a period of two years. These samples will be examined for mir-10b expression levels. Patient survival, as well as tumor grade and genotypic variations will be correlated to mir-10b expression levels.
This project is aim to explore non-increased-intracranial-pressure symptomatic brain metastases of NSCLC, and if the OS of secondary brain radiotherapy after recurrence with Erlotinib is better than Erlotinib with concurrent brain radiotherapy. Treatment group are treated with Erlotinib until brain tumor progression, then gave brain radiotherapy, and continued to take Erlotinib till extracranial lesions progression. Control group are Erlotinib with concurrent brain radiotherapy, and continued to take Erlotinib after radiotherapy until recurrence or termination for other reasons.
Brain metastases, a common complication,occur in 25-40% of patients with non-small cell lung cancer (NSCLC). Whole-brain radiation therapy(WBRT) and Stereotactic Radiosurgery (SRS) are important approaches to the treatment of brain metastases from NSCLC. Known to us, epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) can pass through the blood-brain barrier and show promising antitumor activity against brain metastases from NSCLC, especially for EGFR mutation patients. However, due to the lower concentration of tyrosine kinase inhibitors (TKIs) in the cerebrospinal fluid and its inevitable emergence of drug resistance, brain metastases will be refractory or resistant to standard-dose EGFR inhibitors. Icotinib is one agent of EGFR-TKIs. The previous studies have shown that the Icotinib conventional dose (125mg, TID) is far from reached its maximum tolerable dose. It is a challenge whether the further dose escalation of Icotinib will enhance its concentration in cerebrospinal fluid and thereby improve its therapeutic effect. Here the investigators examine the therapeutic effect and side-effect of double dose of Icitinib in treating patients with brain metastases from NSCLC who have suffered from the failure of conventional dose treatment.