Loading clinical trials...
Browse 9,572 clinical trials for ulcerative colitis. Find studies that match your criteria and connect with research centers.
Find trials near:
Showing 5961-5980 of 9,572 trials
NCT03901170
Letrozole (Femara), is an aromatase inhibitor which is used in the treatment of hormonally-responsive breast cancer after surgery. It is a good target for selective inhibition because estrogen production is a terminal step in the biosynthetic sequence. Aromatase inhibitors are widely used as adjuvant endocrine therapy for postmenopausal women with breast cancer. They have been used off-label in the treatment of patients for increasing the number of ovarian follicles recruited in ovulatory women undergoing controlled ovarian hyperstimulation (COH). A shorter half-life (48 hours) which would predict a lower risk of teratogenicity. No direct antiestrogenic adverse effects on the endometrium, due to an absence of peripheral estrogen receptor blockade and the shorter half-life. For ovarian normal responders, instead of hCG (human chorionic gonadotropin), luteal support with exogenous progesterone supplementation is the standard protocol for patients who received fresh embryo transfer for avoiding the risk of OHSS. In other normal responders who have increasing risk of OHSS, the strategy of freezing all embryos are more favored. In previous studies, high estrogen-induced endometrial gland cells apoptosis might account for the defective endometrial receptivity in women with excessively high estrogen concentrations after ovarian hyperstimulation in IVF cycles. Since letrozole can reduce the serum level of estrogen due to its pharmacological properties, which in turn reduces the adverse effects of high estrogen on the endometrium and improve the endometrial receptivity for embryo implantation. The investigators anticipate that infertility patients will receive short-term oral administration of letrozole (2.5 mg/tab) once a day when estrogen is elevated in the late stage of ovulation stimulation when receiving ovulation stimulation for two to three days. And transvaginal ultrasound was performed every two to three days for growth of ovarian follicles until two days before oocyte retrieval. Observing whether taking the drug can improve the maturity of the oocyte, pregnancy rate, implantation rate, miscarriage rate, ongoing pregnancy rate and live birth rate of the fresh embryo transfer cycle.
NCT03877562
This study will investigate if there is any difference in the amount of weight gained by participants taking olanzapine with CORT118335 compared with olanzapine with placebo (a dummy test medicine which looks like CORT118335 but contains no active medicine). Safety and tolerability of CORT118335 when taken with olanzapine will also be evaluated.
NCT02944552
The study adopted the superiority design of multi center, randomized, double-blind, positive control drug, dose finding, using two simulation skills. The qualified subjects, according to the ratio of 1:1:1, were randomized into low dose group, high dose group and positive drug control group, and received a treatment course of 4-8 weeks, all individuals were followed up for 4 weeks after drug withdrawal.
NCT03419962
Open-label observational study: including COPD patients receiving treatment with Spiolto® Respimat® for approximately 6 weeks, which is the average time between two medical consultations
NCT04340011
Images will be collected during routine colposcopy and paired with their pathology results to be used for resident education
NCT02889640
The inability to consistently deliver at large scale promising education interventions is an important contributing cause to inequality in the U.S. The research team applies insights from price theory and field-based randomized controlled trials to examine the effect of implementing a promising academic skills development program at large scale before implementing at scale. The project is designed to provide evidence of direct scientific and policy value for attempts to scale up a specific intervention, but also stimulate a much more thorough investigation of social policy scale-up challenges by refining these methods and demonstrating their feasibility and value. The research team examines the challenge of program scale up for a promising intervention studied in Chicago at medium scale in the past - SAGA tutoring. Past work has demonstrated that SAGA's intensive, individualized, during-the-school-day math tutoring can generate very large gains in academic outcomes in a short period, even among students who are many years behind grade level. This study will explicitly explore the extent to which there is a trade-off between effectiveness and scale for this intervention. By taking advantage of the power of random sampling, this study will also allow for observation of the program's effectiveness as if it were running at three-and-a-half times the proposed scale in a subset of the study population.
NCT02325687
Obstructive sleep apnea (OSA) is common and is a risk factor for postoperative complications, including respiratory and cardiac events and delirium. Despite this risk, however, there are currently no accepted biomarkers that can predict poor outcomes, making it unclear to see which patients will have complications after surgery, and who might need prolonged monitoring or an extended hospital stay. An improved understanding of the pathophysiology of OSA is required to identify potential biomarkers for outcomes after surgery, as well as to develop new treatments. The aim of this pilot study is to identify serum and cerebrospinal (CSF) biomarkers associated with obstructive sleep apnea (OSA). The presence of cytokines and neurotrophins will be determined and quantified in both patients with OSA and in controls. The CSF samples will additionally be analyzed by proteomic methods to identify potential biomarkers with significantly different levels present in patients with and without OSA. The working hypothesis is that OSA patients who are non-CPAP-compliant will have higher levels of circulating cytokines and lower levels of circulating neurotrophins in serum and CSF, compared to patients who are CPAP-compliant and/or controls.
NCT03486639
Urodynamic examination evaluates storage and empting phases of the urinary bladder. It enables the clinician to correlate physiologic findings to patients' complains. The data gathered during the examination divided to storage and empting. During the storage phase, bladder sensation is measured while the bladder is filled with sterile water. During years of practice, we noticed that early sensation (bladder over-sensitivity) is occasionally associated with bladder outlet obstruction (as demonstrated in the emptying phase of the examination.
NCT04199598
The study is intended to assess the relative bioavailability of 2 different abediterol nebulised formulations (test) and the dry powder formulation (reference). The study results will provide information on the pharmacokinetic (PK) profile following use of the 3 devices to be used in further clinical development.
NCT03932383
This is a prospective pilot to investigate the effect of 3D printer customized CPAP masks on the comfort of patients with obstructive sleep apnea.
NCT04350411
Electrosurgery allows for dissection with simultaneous haemostasis. One of its disadvantages is that the heat production can cause injury to the surrounding tissue which may result in wound healing problems and an increased rate of seromas. The PEAK PlasmaBlade™ (PPB) is a new electrosurgery device which may overcome this by having the ability to operate on a lower temperature, therefore reducing collateral thermal damage. Different experimental studies in both animal and human models comparing the PEAK PlasmaBlade™ and other surgical dissection devices for incisions have shown a reduction in width of zone of thermal injury, reduction in wound inflammation, increased wound strength and reduced scaring in favour of the PEAK PlasmaBlade™ and comparable to scalpel incisions. A prospective clinical study published by Dogan et al. in 2013, including 46 consecutive breast cancer patients receiving a modified radical mastectomy either with the conventional diathermy (n=22) or the PEAK PlasmaBlade™ (n=24), showed a statistically significant reduction in wound fluid production (p=0.025), leading to earlier drain removal (p=0.020) in the PEAK PlasmaBlade™ group. Comparable to oncological breast surgery, prolonged drain requirements for high wound fluid production and seromas are often experienced in the abdominal donor side after deep inferior epigastric perforator/ muscle sparing transverse rectus abdominis muscle flap (DIEP/MS-TRAM) breast reconstruction. To evaluate the effects of the PEAK PlasmaBlade™ for abdominal dissection in autologous breast reconstruction on wound fluid production and complications such a seroma, this double blinded randomised controlled clinical trial was conducted. It was hypothesised the use of the PEAK PlasmaBlade™ for the harvest of the DIEP/ MS-TRAM flap would result in 1) a shorter abdominal drains requirement (days); 2) a lower total drainage volume (mL) from the abdominal drains; 3) lower levels of inflammatory cytokines in the drain fluid and 4) less and smaller seromas would be identified using ultrasound in the follow-up period.
NCT04349397
The purpose of the study is to quantify the use of pain medications given to children aged 3 - 12 years as well as their pain level through pain scores after they have undergone a tonsillectomy or adenotonsillectomy surgery at Doernbecher Children's Hospital (DCH). We would like to learn more about the pain medications given and the pain scores of children post-surgery for the first 5 days following discharge from the hospital.
NCT03240575
The primary objective of the trial is to show superiority in lung function of once daily (2 inhalations) treatment with orally inhaled tiotropium+olodaterol fixed dose combination to twice daily (one inhalation) treatment with fluticasone propionate+salmeterol fixed dose combination over 12 weeks in patients with Chronic Obstructive Pulmonary Disease (COPD). A Digital Health (DH) exploratory study has been integrated into the main study as a site specific study. The DH exploratory study will be performed at a single site; the site is also participating in the main study. The DH exploratory study site will enter (randomize) approximately 20 patients (subjects) (in addition to the patients to be enrolled in the main study at this site). The patients enrolled in the DH exploratory study are not considered to be part of the main study (i.e. data collected in the DH exploratory study will be analyzed separately from the data collected in the main study).
NCT01288495
Data suggest that alanine may facilitate the intestinal absorption of fructose in patients with DFI and thereby may decrease GI symptoms. We hypothesize that the ingestion of supplemental L-alanine along with mixed meals or snacks that contain foods with free fructose or high fructose content will decrease GI symptoms in subjects with dietary fructose intolerance by facilitating intestinal absorption of fructose. Aim: To investigate the effects of co- administration of equi-molar doses of L-alanine or placebo on the occurrence of GI symptoms in subjects with dietary fructose intolerance, in a randomized, double blind, cross over study. Methods: We propose to investigate the effects of co-administration of equi-molar doses of L-alanine or placebo on the occurrence of GI symptoms in 70 subjects with dietary fructose intolerance, in a randomized, double blind, cross over study. Data Analysis: The primary outcome measure will be a comparison of baseline breath sample values and study visit breath sample values. Additionally, we will assess subject-reported occurence and severity of nine gastrointestinal symptoms during the test on a visual analog scale (VAS). Expected Results: We anticipate that dietary fructose intolerance (DFI) symptoms will improve with ingestion of supplemental L-alanine (along with foods containing free fructose or high fructose content). We additionally expect treatment of DFI with administration of L-alanine powder to be more practical than co-ingestion of alanine-rich foods, and more convenient for patients.
NCT01033266
Nasal CPAP will improve cardiopulmonary exercise test (CPET) performance in patients with overlap syndrome(COPD and OSA). Nasal CPAP is proven to improve cardiopulmonary exercise testing in patients with OSA. The investigators hypothesis is that patients with overlap syndrome will have a greater improvement in their cardiopulmonary exercise testing besides a possible improvement in their lung function test and airway resistance.
NCT01045499
Laparoscopic adjustable gastric banding (LAGB) has been used worldwide to help selected morbidly obese adults to lose weight. The FDA has approved LAGB only for patients 18 years or older. Our hypothesis that LAGB can be used to assist selected adolescents between 14 and 17 years lose weight and that the procedure can be performed safely in this age group. We are also evaluating the effects of weight loss after LAGB on known comorbid conditions such as sleep apnea syndrome and insulin resistance, and also on psychological health.
NCT00082888
This phase II trial studies how well tipifarnib works in treating patients with relapsed or refractory non-Hodgkin's lymphoma. Tipifarnib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Tipifarnib may be an effective treatment for non-Hodgkin's lymphoma.
NCT03360357
A recent survey of obstetrics and gynecology fellowship program directors showed that graduating OB/GYN residents may be underprepared for advanced laparoscopic training, necessitating an evaluation of the current structure of resident and fellow curriculum. Specifically, only 46% of first year fellows were able to independently perform an abdominal hysterectomy. Out of 28 residents tested using a previously validated laparoscopic cuff suturing model, only 8 (28.6%) passed the assessment. For this reason, it is necessary to identify the most effective and efficient educational approaches to obtain procedural proficiency. Time and effort has been placed in developing simulation programs. Simulation has shown promising outcomes in improving the performance of trainees and attending physicians with the ultimate objective of generating better surgeons. A previous meta-analysis of simulation-based educational assessments demonstrated that these assessments correlate positively with patient-related outcomes. However, there are limited studies with adequate validity to use simulation for summative evaluations of performance for gynecology residents. The widely used Fundamentals of Laparoscopic Surgery (FLS) program is used for credentialing of general surgeons, however, a systematic review suggested that more validity evidence is required to support its content (selection of tasks and scoring rubric) and the consequences (favorable and unfavorable impact) assessment. Although there has been an increase in the number of models available to teach OB/GYN common gynecologic procedures, there is a lack of evidence to support that these methods are actually allowing residents to create better surgical skills. To address the current limitations in OB/GYN training, the investigators have developed short, guided drills that cover the steps required for laparoscopic suturing and allow residents opportunities for deliberate practice. These drills will be tested compared to residents watching a laparoscopic suturing video and practicing using a high fidelity, suturing simulation model. Both of these methods are standard educational approaches for teaching laparoscopic skills, but it is unknown if one of the approaches is more effective than the other.
NCT02961764
This study will evaluate a new critical pathway (use of guideline-based patient identification criteria and for those who meet these criteria, use of dalbavancin) for the treatment of ABSSSI compared to usual care.
NCT04174131
This study is designed to assess and compare the efficacy of two hyaluronic acid (HA) fillers on moderate, severe and extreme nasolabial folds (NLF).
