The Electroencephalogram & Clinical Effect of Ketamine

Status Terminated

Clinical Trial Summary

The electroencephalography (EEG) is a noninvasive medical technique for monitoring and recording the electrical activity of brain. The Hilbert-Huang Transformation (HHT) was proposed to decompose EEG signal into intrinsic mode functions (IMF). HHT can obtain instantaneous frequency data and work well for nonstationary and nonlinear data. We applied this method in perioperative EEG signal analysis in order to find the energy shift and quantify the energy change during general anesthesia. Ketamine was a depolarized sedative which was wildly used in anesthesia. We are trying to find the energy change after ketamine injection, and the interaction between different oscillations in EEG. The whole brain mapping for ketamine and other sedatives interaction is the next step.

Clinical Trial Description

Method: In the first year, we will record 60 patients who received general anesthesia, their EEG data recorded from bi-spectral index (BIS) monitor. Under the same anesthesia depth, the experimental group use ketamine 0.5mg/kg; while the control group using alfentanil 0.01mg/kg injection. Both perioperative data were recorded included heart rate, blood pressure and surgical time. We decompose the raw EEG data from BIS monitor with EMD, and we observe difference between IMFs, and quantifying energy change. Second year: We will extend the EEG monitor to temporal lobe, parietal lobe and occipital lobe. Besides the whole brain mapping method for detecting energy change after ketamine injection; we also tried to find the interactions between oscillations. Finally, we want to apply the analysis method to pediatric patients, try to find the difference of ketamine reaction between generations. Anticipated Results: We anticipate that we can quantify the energy of EEG by Emperical mode decomposition(EMD), and ketamine injection can cause different energy change with other sedatives. We will find the energy traveling in EEG with EMD decomposition. We will find that HHT is more suitable for EEG analysis in clinical practicing. With the whole brain mapping method, we can understand the electrical activity during general anesthesia. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT03679390
Study type	Interventional
Source	National Taiwan University Hospital
Contact
Status	Terminated
Phase	N/A
Start date	March 1, 2017
Completion date	September 1, 2020

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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.

The Electroencephalogram and Clinical Effect of Ketamine

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms