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 nocturnal short-term BPV induced by sleep-breathing events is affected by many factors. The purpose of the study is as follows: (1) to explore the relationship between nocturnal short-term BPV and vascular endothelial function and sympathetic activity in patients with OSA respectively, (2) to explore which play the key role in BP fluctuation, (3) how to prevent the frequent BP fluctuation and arrive at a safe point.
A pilot prospective single-arm cohort study on the Effectiveness and Safety of Electroacupuncture at ST36(Zusanli) in Treating Primary Premature Ejaculation
From 2020 to 2023, patients with primary electrical disease (idiopathic ventricular fibrillation, long QT syndrome, Andersen-Tawil syndrome type I, Brugada syndrome, early repolarization syndrome, CPVT, and short QT syndrome) were first diagnosed at Sun Yat-sen Memorial Hospital of Sun Yat-sen University, and clinical data and echocardiographic indicators were recorded. Follow-up is until December 30, 2025 or endpoint event occurs. Endpoint events were defined as sustained ventricular tachycardia, ventricular fibrillation, sudden cardiac death, ICD discharge events, all-cause death, heart failure and heart transplantation, which were statistically analyzed as a composite endpoint of cardiovascular analysis. The predictors of primary electrical disease and the risk factors for adverse cardiovascular events were analyzed.
On February 11th, 2020, the International Classification of Viruses named the disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) as novel coronavirus (COVID-19, Covid-19 for short). At present, COVID-19 has become a global pandemic. However, the persistent replication of HIV in PLWH and the cellular immunodeficiency and persistent inflammation caused by it may have different effects on the susceptibility, severity and course of Covid-19. Several large cohort studies have found evidence of increased risk of hospitalization and death in patients with HIV and Covid-19 co-infection. Meanwhile, a meta-analysis of 22 studies shows that HIV infection is still an important risk factor for acquiring Covid-19 infection, and it is associated with a higher risk of death in COVID-19. In order to further clarify the clinical features and prognosis of HIV co-infection with Covid-19 and explore its immune mechanism, so we will carry out the study.
The study to evaluate the consistency of oscillometry and spirometry test results in patients with confirmed or suspected asthma or COPD, it is a multi-centre clinical study. sponsor by Astrazeneca Investment(China) Co.,LTD.
The goal of this observational study is to determine whether the frequency of ejaculation in men had an effect on semen parameters.. The main questions it aims to answer are: - question 1：Whether the frequency of ejaculation has an effect on semen parameters - question 2：Whether the penultimate abstinence period has an effect on semen parameters The participants were men who underwent semen examination in the andrology clinic of the Reproductive Center of the First Hospital of Jilin University. A brief medical history was collected from each volunteer, including demographic information, fertility history and as well as information regarding their general health.The focus of the investigation is the time of abstinence for this examination, the penultimate abstinence period, and the number of ejaculation since the last 1 month.
This is an open-label, single-arm phase 1b study to evaluate the safety, tolerability, pharmacokinetics, and preliminary anti-tumor efficacy of NTQ1062 in combination with Fulvestrant in patients with locally advanced or metastatic HR positive/HER-2 negative breast cancer.
The goal of this study is to investigate breast cancer's internal heterogeneity and enhance diagnostic accuracy. We aim to achieve this by utilizing Contrast-Enhanced Ultrasound (CEUS) technology, which provides detailed information about tumor perfusion dynamics. Traditional biopsy methods have limitations due to the invasive nature and complexity of breast cancer heterogeneity. Participants in this study will undergo preoperative breast cancer diagnosis using CEUS technology, which is safe, cost-effective, and convenient. Dynamic CEUS videos will be used to cluster perfusion characteristics at the pixel level within breast tumors, allowing us to divide the tumors into distinct subregions based on these clusters. We will then explore the correlation between these perfusion subregions and the diagnosis of benign or malignant breast tumors. Our ultimate aim is to develop diagnostic models that utilize non-invasive imaging data to enhance breast cancer diagnosis. This approach reduces subjective judgments in the diagnostic process, potentially improving diagnostic accuracy. It also provides valuable information for personalized treatment decisions, thus advancing the field of breast cancer treatment.
This is a multi-center randomized phase III clinical study of first-line intravenous FOLFOX plus Camrelizumab and apatinib versus HAIC-FOLFOX plus Camrelizumab and apatinib for BCLC C stage hepatocellular carcinoma.
"Retrospectively collecting clinical data from post-PVA (Percutaneous Vertebroplasty) patients, recording incidences of secondary vertebral fractures, and conducting statistical analysis to create a risk prediction model for recurrent fractures."