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Time clinical trials

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NCT ID: NCT06364566 Completed - Time Clinical Trials

Exploring the Optimal Timing of Minimally Invasive Surgery for Esophageal Squamous Cell Carcinoma

Start date: October 15, 2010
Phase: N/A
Study type: Interventional

The optimal interval between neoadjuvant chemradiotherapy and esophagectomy is still a question that needs to be explored for patients with esophageal squamous cell carcinoma. In this study, based on previous studies, the investigators divided patients into two groups with a cutoff value of 50 days. By comparing the overall survival and disease-free survival of the entire population and non PCR population, the investigators ultimately obtained the optimal surgical timing suitable for clinical use

NCT ID: NCT05749991 Completed - Patient Preference Clinical Trials

Efficacy and Retention of Sealants Placement Using Two Isolation Systems

Start date: June 3, 2018
Phase: N/A
Study type: Interventional

The trial aimed to evaluate the sealant retention, patient's preference and chair time needed during pit and fissure sealant placement under two isolation techniques [Dryshield system (DS) and cotton roll isolation (CRI)] in a university setting.

NCT ID: NCT04714112 Completed - Analgesia Clinical Trials

Low-dose Intravenous Dexamethasone at Different Times as Adjunvants for Brachial Plexus Blocks

Start date: January 10, 2021
Phase: Phase 4
Study type: Interventional

Dexamethasone has been tested as an effective adjuvant to prolong the effect of local anesthetics for peripheral nerve blocks, both perineurally and intravenously. The purpose of this study is to investigate the effect of the addition of dexamethasone (5mg) at different time to a standard ropivacaine solution (0.5%) on analgesic duration of interscalene block.

NCT ID: NCT04656912 Completed - Clinical trials for Carbon Monoxide Poisoning

Hyperbaric Oxygen Therapy Initiation Time in Acute Carbon Monoxide Poisoning

Start date: September 1, 2020
Phase:
Study type: Observational

Hyperbaric oxygen therapy (HBO2) is recommended for symptomatic patients within 24 h of carbon monoxide (CO) poisoning. However, previous major studies found significantly better outcomes with HBO2 in patients treated within 6 h. Currently, there is no consensus on a CO poisoning-to-HBO2 interval that would not be beneficial. Therefore, the investigators aimed to evaluate the difference in therapeutic effect depending on the poisoning-to-HBO2 interval after CO exposure in patients with acute CO poisoning who received HBO2 within 24 h. The investigators compared the neurocognitive outcomes of patients according to HBO2 time intervals based on the outcomes of patients treated within 6 h (control group) with propensity score matching using the CO poisoning registry of our hospital.

NCT ID: NCT02995369 Completed - Patient Preference Clinical Trials

DryShield vs Cotton Roll Isolation During Sealants Placement: Efficiency and Patient Preference

Start date: January 17, 2017
Phase: N/A
Study type: Interventional

The goals of this study are to determine if 1) placement times of pit and fissure sealants using the DryShield system differ from those when using the cotton roll isolation technique; and 2) there is a significant difference in patient preference between Dryshield and the cotton roll technique.