Active clinical trials for "Rectal Diseases"

Water injection colonoscopy has been a generally accepted method in training the beginners of colonoscopy for its low pain and less cecal intubation time, the investigators would conduct this study to investigate advantages of this method for experienced endoscopists.

This study tests biopsy and tissue from patients who have been treated for primary rectal cancer at the Royal Marsden Hospital between 2011 and 2013, who have an mrTRG score at post-chemoradiotherapy MRI. It is a retrospective pilot study to determine the apoptotic and proliferative index count pre and post chemoradiotherapy.

The research product, registered as a nutritional supplement (Ocoxin®, oral solution), manufactured by Laboratorios Catalysis S. L., comes in the form of single-dose vials of 30 ml. It will be used at a rate of 60 ml daily (1 vial every 12 hours). Our main objective is To evaluate the effect of Ocoxin®-Viusid® on the quality of life of patients with metastatic colorectal adenocarcinoma. Our hypothesis is that the administration of the nutritional supplement Ocoxin®-Viusid® it is expected to improve the quality of life and enhance tolerance to chemotherapy in at least 70% of patients.

The first objective to determinate the prevalence of pelvic floor dysfunction in pregnant women and in the first year postpartum. The second objective is to assess the anatomical (both clinical and ultrasound), demographic and obstetric variables in symptomatic women and their association with pelvic floor dysfunction, sexual function and Body Image. This is a single center prospective cohort study. Women will be asked to fill out a questionnaire at the time of their 1st and 3rd trimester scan, at the postpartum checkup and 12 months postpartum. Furthermore, they will undergo a pelvic floor ultrasound at the time of their first and third trimester scan. The presence of pelvic floor dysfunctions will be recorded through validated self-administered questionnaires with five domains: Wexner questionnaire for anal incontinence, PAC-SYM for constipation, International Consultation on Incontinence Questionnaire Short Form for urinary incontinence, the Pelvic Organ Prolapse Distress Inventory for pelvic organ prolapse, POP/UI Sexual Questionnaire - IUGA revised for sexual function. The body image perception will be assessed using the Dutch-validated version of the self-administered Body Image Disturbance Questionnaire. The anatomy of the pelvic floor will be objectively assessed off line on 3D/4D transperineal ultrasound volumes and POP-Q examination. The demographic variables and information about the pregnancy and the delivery will be obtained from the medical records.

This study is the evaluation of ultrafine endoscope (with small caliber and turning radius )for colonoscopy in decreasing abdominal pain of patients . 60 patients will be accepted in this trial.

The purpose of this study is to establish a reliable method for detection of rectal cancer patients with aggressive tumor at risk of metastatic disease and death by functional MRI.

The term Guarding Reflex refers to a progressive, involuntary increase in the external urethral sphincter activity during bladder filling.This is a mechanism of continence, preventing from unwanted urine leakage in situation of stress. Anal continence is essential, and any impairment of this function can have a severe impact on quality of life. Anal continence at rest is mainly insured by the tone of the internal anal sphincter. The external anal sphincter activity during gradually rectal filling is continuous and varies according to the volume of rectal distension. During an effort, or a cough, the increasing intra-abdominal pressure is transmitted to the rectum. Increased intra-abdominal pressure during an expiratory against resistance effort proportionally increases the response of the external anal sphincter. The reflex contraction of the EAS is an active mechanism under spinal control, and result in a stronger contraction than a voluntary one. This reflex contraction is the equivalent of "Guarding Reflex" and provides part of the continence in situation of stress. The main purpose of this study is to research a correlation between the ano rectal distension volume and the external anal sphincter response to a stress. Patient over eighteen years old, consulting for anorectal manometry examination in order to explore anorectal disorders are included. Age, sex, ano rectal symptoms, treatments, past history, manometrics data, area under the curve for electromyography activity of the EAS and intercostal muscles during cough with a Valsalva effort are recorded. Slope curve representing the EAS response to stress according to the intercostal activity reflecting cough (intensity response curve) effort are calculated. The protocol consists in distending the rectum at four different volumes. For each volume, the patient is asked to cough three times gradually, and perform a Valsalva effort three times gradually. Primary outcome is the difference in curve slope (intensity response curves) between empty rectum and maximal tolerable volume at cough Secondary outcomes are the differences in curve slope between each volume of distension at cough, and Valsalva type effort.

The purpose of this study is to determine: What quantity of bacteria is spilled into the abdomen during a colon resection If there is a correlation between the quantity and post-operative infection What intralumenal pressure is generated when testing the colonic anastomosis for air leak

Up to now, many studies has showed that compared with air insufflation colonoscopy, water-related colonoscopy could shorten the cecal intubation time and relieve the pain of the patients,especially for training the beginners,the investigators conduct this study to preform the "air assisted" water injection colonoscopy in experienced endoscopists.

The aim of this study is to determine whether greater rectal cancer downstaging and regression occurs when surgery is delayed to 12 weeks after completion of radiotherapy/chemotherapy compared to 6 weeks. Hypothesis: Greater downstaging and tumour regression is observed when surgery is delayed to 12 weeks after completion of CRT compared to 6 weeks.