BIS-EEG Clinical Trials

BIS-EEG clinical trials

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NCT ID: NCT00782938 Completed - Cognition Clinical Trials

The Role of Serum Anticholinergic Activity in ACVB Patients

Start date: May 2008
Phase: N/A
Study type: Observational

Drugs with anticholinergic potential increase the risk of postoperative transient and persistent cognitive dysfunction especially in cardiac patients. The investigators main goal is to identify preoperative risk factors and to monitor postoperative patients' state in relation to SAA activity and bilateral BIS-EEG changes.

Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.

Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.