There are about 36818 clinical studies being (or have been) conducted in China. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
The goal of this observational study is to construct a multimodal intelligent model to predict the risk of heterochronous metastasis of rectal cancer, which is helpful for individualized diagnosis and treatment and follow-up planning. The main questions it aims to answer are: - what are the independent risk factors of distant metastasis (DM) in locally advanced rectal cancer (LARC) - What is the influence weight of the above factors on the heterochronous metastasis of LARC, and how to build a risk-prediction model This study will not affect or interfere with the routine medical diagnosis and treatment of participants, and will not increase the cost and risk of participants. Participant's information is protected and identified by a unique code.
Regional anesthesia is a common clinical anesthesia method, and regional anesthesia-assisted sedation play a central role in promoting patient comfort and relieving anxiety. With increasing age, elderly people experience changes in pharmacokinetics and pharmacodynamics and increased drug sensitivity. Ciprofol has advantages in adverse events such as hypotension and respiratory depression. There are fewer studies on the recommended dosage of ciprofol-assisted sedation for intrathecal anesthesia in elderly patients. The aim of study is to identify the median effective dose(ED50) of ciprofol-assisted sedation in elderly patients undergoing spinal anesthesia
The goal of this retrospective cohort analysis is to discover the impact of the involvement extent of tumor-draining lymph nodes (TDLNs) in patients who received neoadjuvant immunochemotherapy. The main question it aims to answer is the role of TDLN in the prediction of treatment effectiveness. Researches will compare tumor-draining lymph nodes metastasis (mTDLNs) group and non-draining lymph nodes metastasis (mNDLNs) group to see whether different metastatic patterns of mediastinal lymph nodes can indicate the treatment effectiveness.
Background: Primary malignant melanoma of the esophagus (PMME) is a malignant tumor originating from esophageal melanocytes with a poor prognosis. No international clinical guidelines or tumor staging systems have been proposed for PMME. This study aimed to analyze the clinical characteristics and treatment outcomes of patients with PMME and propose a tumor staging system in PMME. Materials and Methods: The clinical characteristics of 25 patients with PMME at our cancer center were summarized, and 21 patients were enrolled in a pooled analysis with 162 cases (extracted from 74 eligible articles in PubMed) for further survival analysis and proposal of PMME tumor staging.
Objective To analyze the effectiveness and safety of robot-assisted percutaneous endoscopic posterior/transforaminal lumbar interbody fusion (RPE-P/TLIF) in the treatment of lumbar spinal stenosis with instability. Methods A single-center prospective study from September 2018 to April 2022, patients with lumbar spinal stenosis and instability who met the inclusion and exclusion criteria were treated with RPE-P/TLIF. Pain visual analog scale (VAS) was used to evaluate the degree of low back pain and lower limb pain before operation, 1 month, 6 months, 1 year after operation and at the final follow-up, and the Oswestry disability index (ODI) was used to evaluate the degree of lumbar spinal function. At the last follow-up, MacNab criteria were used to evaluate the clinical efficacy. Imaging evaluation included the measurement of intervertebral space height, lumbar physiological curvature, fusion rate and pedicle screw accuracy by preoperative and lateral X-ray films.
The purpose of this study was to evaluate if wound drains could influence postoperative spinal epidural hematoma (POSEH) in biportal endoscopic spinal surgery (BESS) procedures for decompression of lumbar spinal stenosis.
This is a single-center, randomized, double-blind, placebo-controlled Phase I clinical trial in healthy subjects.In healthy subjects, 300mg and 400mg FCN-437c capsules were taken orally for a single time. C-QTc effect model was used to evaluate the influence of blood concentration on QT interval, and the pharmacokinetic characteristics and safety of FCN-437c were also evaluated.Based on the C-QTc effect model, this study quantitatively analyzed the relationship between ΔΔQTcF and blood concentration, and evaluated the upper limit of 90% bilateral confidence interval of ΔΔQTcF corresponding to the geometric mean of Cmax at clinically relevant dose of FCN-437c capsule. This study plans to set up 2 dose groups, low-dose group 300mg and high-dose group 400mg.Nine healthy subjects were planned to be enrolled in each dose group, with a 2:1 ratio of placebo control. This study was carried out in the order of dose from low to high. After the administration of the low-dose group (300mg) and the safety assessment on the fourth day after administration, the study of the high-dose group (400mg) was decided through comprehensive evaluation.
To establish a predictive model and scoring system for predicting severe complications after thrombectomy. This scoring system can be used to identify high-risk patients after endovascular thrombectomy, guide the early use of adjunctive interventions, and provide reference for future clinical trials.
We enrolled patients with subacute IS, associated with moderate-to-severe stenosis of the unilateral cervical internal carotid artery, who underwent 4D ASL. Perfusion levels and collateral circulation were compared between groups with favorable prognosis (modified Rankin scale [mRS] ≤ 2) and poor prognosis (mRS > 2).
Patients with lung cancer and brain metastases undergo HA-WBRT-SIB using image-guided radiotherapy, receiving a total dose of 30-36 Gy delivered in 18-20 fractions to the whole brain (CTV), while the dose to the GTV is boosted to 44 Gy-52 Gy in 18-20 fractions, five times a week. The optimal mean dose (Dmean) to the bilateral hippocampus should optimally be ≤ 8 Gy, with a mandatory maximum dose (Dmax) to the hippocampus not exceeding 10 Gy; the preferred Dmean to the hippocampus PRV should optimally be ≤ 9 Gy, while the mandatory Dmax to the hippocampus PRV should be ≤ 12 Gy. The HVLT-R immediate recall scores are obtained at baseline and 1, 3, and 6 months after treatment.