Clinical Trials About "Novel scientific method derive water quality criteria metals" RSS

05:45 EST 17th December 2018 | BioPortfolio

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Showing "Novel scientific method derive water quality criteria metals" Clinical Trials 1–25 of 18,000+


Does the Cap Increase the Finding of Polyps When Water Exchange Colonoscopy is Used

This is a study to compare two different, but normally, used methods of colonoscopy in patients that require a routine or repeat colonoscopy. There will be three arms in this study: WE water control, water plus Cap-1, and water plus Cap-2. The patient will prepare himself/herself for the colonoscopy as per normal instructions and he/she will be given the information for the study at that time so that he/she can make a decision to participate in the study. The control method wil...

Prospective RCT Of Water Exchange (WE) vs. WE Plus Cap-Assisted Colonoscopy

This is a study to compare two different, but normally, used methods of colonoscopy in patients undergoing colonoscopy without sedation. There will be two arms in this study: WE (water exchange) control, and WE (water exchange) plus cap (placed at tip of the colonoscope). The patient will prepare himself/herself for the colonoscopy as per normal instructions and he/she will be given the information for the study at that time so that he/she can make a decision to participate in ...

Influence of Heavy Metals Exposure on in Vitro Fertilization (IVF) Outcome

Exposure to heavy metals may interfere with basic cellular functions, including DNA synthesis. The aim of the study is to correlate heavy metals concentration in body fluids of reproductive importance and IVF outcome.

Effect of Water Exchange Method on Adenoma Miss Rates in Patients Undergoing Selective Polypectomy

Patients with colorectal adenomas are suggested to receive polypectomy. A substantial number of adenomas may be missed in patients with polyps found by previous colonoscopy. And water exchange (WE) method may increase the detection of missed adenoma compared with traditional air insufflation (AI) colonoscopy. The investigators aim to investigate whether water exchange colonoscopy method, compared with air insufflation method, can improve the detection of missed adenomas in pati...

The Relationship Between Arsenic Methylation Capability and Blood Metals in Children With Developmental Delays

The purpose of this study is to explore the relationship between arsenic methylation and blood metals in children with developmental delays and its correlation with health related quality of life.

Water Exchange (WE) vs. WE Plus Cap-assisted Colonoscopy

Water exchange (WE) method has been shown to reduce medication requirement and pain experience during the colonoscopy. Cap-assisted colonoscopy aided by air may also reduced the insertion pain. Therefore, the immediate aim of this study is to assess the generalizability of the impact of WE plus cap (WECAC), as a potentially less painful insertion technique than WE. The control group will use water infusion in lieu of air insufflation during insertion of the colonoscope. The stu...

Heavy Metals, Obesity and Cardiovascular Risk - Ancillary to Look AHEAD

To evaluate the relationship of baseline toenail chromium concentrations to weight loss, as well as the interaction between heavy metals and the beneficial effects of weight loss.

The efficacy of the Integrated Water Jet Channel Colonoscopy in Water Exchange Method

This prospective randomized controlled trial compared integrated water jet channel colonoscopy with traditional accessory channel colonoscopy in cecal insertion time among patients undergoing WE method colonoscopy.

Evaluation of Toxic Metals, Trace Elements and Total Antioxidant Activity in Children With Recurrent Wheezing

The purpose of this study is to evaluate hair trace elements and toxic metals and plasma total antioxidant activity in children with recurrent wheezing and to evaluate whether these toxic metals and trace elements have any impact on serum cytokine levels.

Automatic Chlorination and Child Health in Urban Bangladesh

Municipal water networks within industrialized countries typically rely on centralized treatment to manage piped water quality. Optimal water quality at the tap, however, requires well-maintained piped distribution networks, and performs best when piped systems are fully pressurized. In low-income cities such as Dhaka, water distribution networks are inadequately maintained and typically supply intermittent service; as such, they are vulnerable to recontamination during negativ...

Comparisons of SWI, WWI and AI in Potentially Difficult Colonoscopy.

Colonoscopy insertion is technically challenging, time-consuming, and painful, especially for the sigmoid. It is reported that the difficult colonoscopy score (DCS) >1 can predict the difficulty during colonoscopy. Patients with DCS>1 had longer insertion time, higher pain score and needed more abdominal compression and position changes. As reported, water-aided method colonoscopy examination is an important and useful method because it reduces discomfort and increases cecal in...

Comparison of Procedural Sequences in Same-day Painless Bidirectional Endoscopy With Colonoscopic Water Exchange Method

This prospective randomized controlled trial is to compare evaluate the optimal procedure sequence among patients undergoing water exchange method colonoscopy.

Physical Training in Water and Its Influence on Maternal Fetal Parameters

This study evaluates whether the use of moderate physical exercise character in water is beneficial for pregnant women. Half of the participants will carry out moderate physical exercise character in water, following the protocol developed specifically for this purpose and called SWEP method, while the other group will not perform physical exercise during pregnancy.

Evaluation of the Impact of Water Method During Insertion Phase of Flexible Sigmoidoscopy in Training

Colonoscopy is a sedated procedure traditionally performed using air insufflation during the insertion phase of the procedure. Recently, the use of water method (eg, water infusion or water exchange techniques) during the insertion phase of colonoscopy has been reported to increase the proportion of patients in whom complete unsedated colonoscopy could be achieved, reduce patient recovery time burdens, decrease abdominal discomfort during and after colonoscopy, enhance cecal in...

Water Immersion and Polyp Detection: A Randomized Controlled Trial

We plan to conduct a randomized trial of tandem colonoscopies comparing water infusion and air insufflation for inspection of mucosa on withdrawal. In one randomized group, water infusion will be employed as the first method for mucosal inspection while in a second group, CO2 insufflation will be used first. This study will be different than usual care since the participants will receive two successive or tandem colonoscopies versus one

Effects of Ozonated Water on Pain, Swelling, Trismus and Quality of Life in Third Molar Surgery

The aim of this study was to evaluate the effect of ozonated water on pain, edema and trismus after third molar removal. Patients were submitted to extraction of lower third molar under irrigation with ozonated water or doubly distilled water. Data were collected at baseline, 24 hours, 48 hours, 72 hours and 7 days after intervention.

Effectiveness of RL- vs LL-starting Position in Unsedated Water Immersion Colonoscopy

Abdominal discomfort is of the most important patient interest when in an unsedated colonoscopy examination. Water method for colonoscopy examination has been studied widely and evidence showed effectiveness in reducing discomfort and increase cecal intubation time and increasing cecal intubation rates in unsedated patients.

Pharmacokinetics of Two Eletriptan Oral Formulations Given With and Without Water and the Commercial Tablet Formulation Given With Water

The study will evaluate whether the blood concentrations of eletriptan administered using two test formulations of oral disintegrating tablets are comparable to those observed with the standard commercial tablet.

Study of the Effects of a Mineralized Water Ingestion Upon Lipidic Absorption Mechanisms

The principal objective of this research is the evaluation of the effect of mineralized water consumption upon evolution of LDL Cholesterol and triglycerides, compared to a low mineralized water consumption.

The Effects of An Addition of Water Enema to PEG for Colon Preparation

The purpose of this study is to compare the preparation quality by using Ottawa Bowel Preparation Scale between the standard PEG preparation and the addition of water enema in participants scheduled for CRC screening

Spray Water to Remove Residual Lens Fibers

After phacoemulsifying cataract surgery, the cortical fibers of lens remain in the posterior capsule, which can cause early postoperative posterior capsule turbidity and affect the visual quality. I/A low negative pressure polishing posterior capsule is traditional use. Because of the lens capsule bag without support, posterior capsular will float during perfusion and not easy to identify, so adhesion in posterior capsular cortical fiber is not easy to be completely cleared. We...

Water Oxygenation and Brain Activity

The primary purpose of this interventional, placebo controlled, crossover, double blind, basic science exploratory study is to investigate whether there is a difference in brain electrophysiological oscillatory activity in healthy adults before and after oral consumption of water containing very small bubbles of oxygen (electrokinetically modified water).

Water Induced Thermogenesis in Obese Children

Drinking water is largely advocated for obesity prevention and management. Recent studies have suggested that water has a thermogenic effect, this has not been examined in children. In this study, we will measure the resting metabolic rate of 21 obese children before, and during drinking cold (4 degrees centigrade)water for up to 60 minutes.

Measuring Urinary Nano Particles and Metallic Compounds in TCC Patients

In many of urothelial carcinoma patients, one does not find common risk factors such as smoking. The medical center is located in an industrial city with known air and water pollution. The investigators decided to check the presence of nano particles and traces of metals in urinary samples of patients known and suspected for urothelial carcinoma and compare the results to both cystoscopic and cytological findings. The patients will fill a validated epidemiological respiratory d...

Oral Water Ingestion in Heart Transplant Patients

In this study the investigators propose to assess the hemodynamic response to the ingestion of 16 fl oz of water. The investigators will test the hypothesis that water ingestion will increase the systemic vascular resistance.

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