Active clinical trials for "Dilatation, Pathologic"

This study was done to compare efficacy, safety and efficiencies of various methods of pupil dilation prior to cataract surgery.

The principal objective is to assess the general health status and the sexual health status of women with Rokitansky syndrome having received a surgical or non surgical treatment. The secondary purpose is to assess the anatomical aspect and the quality of sexual life. To search a correlation between the anatomical result, the general and sexual quality of life. To compare the different techniques of medical follow-up in terms of anatomic results, general quality of life, sexual quality of life, complications and morbidities. To evaluate social inclusion of these women with their family situation, social and professional category and their job. At the same time, we propose an evaluation with a psychologist to study the impact of the announcement of the diagnosis. This impact study is conducted at a distance from diagnosis.

Sedation-analgesia is an important therapy for patients in resuscitation. It requires a surveillance, in order to avoid excessive or insufficient dosages of sedative or nonmorphinics, sources of side effects. Yet, means of surveillance are limited in resuscitation care : variations of blood pressure and heart rate are not very sensitive criterias. Clinical scales to measure the sedation and analgesia level were proposed for patients in resuscitation, including the Richmond (RASS) sedation scale and the behavioural pain scale (BPS). The study of pupillary dilatation's reflex (RDP) due to a nociceptive stimulation is a tool proposed for the monitoring of the analgesia peroperative for patients under general anaesthetic. Yet, there isn't any study that measured the analgesia threshold by pupillometry for patients in resuscitation receiving a sedation-analgesia. The main goal of this study is to measure the minimum intensity of a painful stimulation (tetanus), leading to a 10% raise of RDP in a cohort of patients in resuscitation care receiving sedation-analgesia continuously.

Endothelial dysfunction of conduit arteries contributes to the increased morbidity and cardiovascular mortality in patients with essential hypertension and appears increasingly as an independent therapeutic target. We have shown previously that besides a decrease in the availability of NO and other endothelium-derived vasodilators factors, the epoxyeicosatrienoic acids, an increase in the vasoconstrictor endothelin-1 (ET-1) may play a role in the pathophysiology of this endothelial dysfunction. Indeed, the local concentrations of endothelin-1 during the endothelium-dependent dilation of the radial artery in response to a sustained increase in blood flow decreased significantly in healthy volunteers controls but not in hypertensive patients. This lack of adaptation of the endothelinergic system could be due to a decreased clearance of endothelin-1 by endothelial ETB receptors, potentiating the vasoconstrictor action of endothelin-1 mediated by ETA receptor activation at the muscular level. However, to validate this hypothesis , it is needed to demonstrate the physiological role of ETA receptor and ETB in sustained flow-mediated dilatation of conduit arteries.

Trial to compare the interexaminer agreement between two cervical dilation examinations conducted by Labor and Delivery physicians when using standard methods versus DilaCheck device.

The Eustachian tube is a narrow tube which links the back of the nose to the middle ear. Eustachian tube dysfunction may occur when the mucosal lining of the tube is swollen, or does not open or close properly. It can occur after the start of a cold and other nose, sinus, ear and throat infections causing ear pain and pressure, fullness, cracking/popping sounds. This is an ubiquitous healthcare problem, affecting children and adults, that can lead to severe consequences including hearing loss, chronic otitis media, tinnitus, and vertigo. Numerous studies have consistently failed to support the effectiveness of medical managements. Pressure equalizing tubes are considered a temporary solution that does not treat the underlying pathology. More recent preliminary evidence of using inflation of a noncompressible balloon in the eustachian tube improved clinical outcomes, patients' symptoms and quality of life. This eustachian dilation catheter is not accessible in Canada since the device and procedure is not covered by OHIP (Ontario health insurance plan) or any other health insurance in Canada. In a cadaver study, we have evaluated using an endovascular balloon (Balloon that is used to dilate (expand) vessels) for eustachian tube dilation, which only costs about 10% of the eustachian tube dilation device. This endovascular balloon is Health Canada approved, but not for this specific use. We therefore want to conduct a pilot safety study with the main goal of assessing feasibility of eustachian tube dilation with the endovascular device.

The aim of study is to determine if the use of warm saline distention media during outpatient hysteroscopy reduces Pain/discomfort of the procedure. Research hypothesis: In women undergoing office hysteroscopy, there will be reduced pain perception when using warm saline (body temperature 37°C during office hysteroscopy. Research question: In women undergoing office hysteroscopy, Will there be a difference in pain perceived during the procedure if the investigators use warm saline(body temperature 37°C) rather than normal saline (room temperature) as a distension media?

Peripheral intravenous cannulation (PIVC) is one of the most common interventions in medical practice. Venous dilatation is helpful for successful PIV placement. Several techniques include hot pack application, tourniquet, massaging, and tapping over the vein to increase vein caliber described in the literature. However, none of them has been rigorously studied. Therefore, there is still no 'best practice' on how to effect vein dilation in a standard way. This study aims to investigate the effect of standardized tapping on venous dilatation with a massage device compared to manual non-standardized tapping and define a standard tapping technique using a device. In this study, the investigators also aim to investigate the effect of tourniquet application with and without vein tapping effect on peripheral vein caliber as determined by ultrasound measurement.

Many athletes seek to increase their plasma (blood) nitric oxide content prior to exercise in order to augment vasodilation. Increased vasodilation during exercise, especially high intensity resistance training, allows for more blood flow to muscle tissues, which may give the athlete benefits such as increased work capacity and acute muscle hyperemia, which is commonly referred to as muscle pump. Pre-workout supplements are typically taken 30 minutes to 1 hour prior to the onset of exercise, so the current investigation seeks to determine if citrulline malate or nitrosigine can effect vasodilation within 1 hour of supplementation, and if so, which supplement is more effective. Based on previous findings, we hypothesize that a certain exercise intensity needs to be present for citrulline malate and nitrosigine to have an effect, so a change may not be observable at rest.

Evaluation of efficacy and safety of using Aqueduct -100 - Cervical Dilator Device, focusing on diagnostic or operative hysteroscopies.