Effects of Dexmedetomidine Target Controlled Infusion on Patient State Index Values and Electroencephalographic Spectrum During Total Intravenous Anesthesia With Propofol

NCT ID: NCT07259460

Last Updated: 2025-12-23

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

60 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-12-01

Study Completion Date

2026-07-30

Brief Summary

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Dexmedetomidine Target Controlled infusion (TCI, Dyck model) effects on Neuromonitoring during Total Intravenous Anesthesia (TIVA) with Propofol and Remifentanil TCI (Eleveld model) has not been investigate yet.

Authors aim to investigate its effect on Patient State index (PSi), the power spectrum EEG, the Analgesia Nociception Index (ANI) and pupillometry values during maintenance during TIVA-TCI with Propofol, Remifentanil and Dexmedetomidine.

Detailed Description

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The effects of Dexmedetomidine administered via Target-Controlled Infusion (TCI, Dyck model) on neuromonitoring during Total Intravenous Anesthesia (TIVA) with Propofol and Remifentanil (TCI, Eleveld model) have not yet been investigated.

The authors aim to systematically evaluate the impact of adding Dexmedetomidine on key neuromonitoring parameters commonly used in clinical anesthesia during the maintenance phase of TIVA-TCI. Specifically, the study will assess:

Patient State Index (PSi) as a measure of the hypnotic state;

Electroencephalographic (EEG) power spectrum, to identify changes in cortical activity patterns associated with Dexmedetomidine administration;

Analgesia Nociception Index (ANI), to evaluate potential modifications in the analgesia-nociception balance;

Pupillometry, to quantify autonomic and pupillary responses to stimuli.

This investigation aims to determine whether the addition of Dexmedetomidine using a TCI approach produces predictable and clinically relevant alterations in neurophysiological monitoring during anesthesia with Propofol and Remifentanil. Ultimately, the study seeks to support more precise drug titration and enhance patient safety.

Conditions

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Adjuvants, Anesthesia

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Eligibility Criteria

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Inclusion Criteria

* Undergo general anaesthesia with Targeted Controlled Infusion of Propofol and Rmifntanil (Eleveld model) and Dexmedetomidine (Dyck model)

Exclusion Criteria

* Neurological disease
* Psychiatric disease
* Obesity
* Regional anesthesia performed
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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University of Padova

OTHER

Sponsor Role lead

Responsible Party

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Federico Linassi

MD, PhD, Principal investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Treviso Regional Hospital

Treviso, TV, Italy

Site Status RECRUITING

Countries

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Italy

Central Contacts

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Federico Linassi, MD, PhD

Role: CONTACT

Phone: 0422322440

Email: [email protected]

Facility Contacts

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Federico Linassi

Role: primary

Other Identifiers

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DexMAST

Identifier Type: -

Identifier Source: org_study_id