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Autonomic Modulation After Propofol Target Controlled Infusion and Bolus Administration

N

National Central University

Status

Completed

Conditions

Autonomic Imbalance
Anesthesia

Treatments

Behavioral: observation of propofol ANS response

Study type

Observational

Funder types

Other

Identifiers

NCT03954262
2019-03-003CC

Details and patient eligibility

About

Some studies have compared the clinical profile during propofol induction anesthesia with Target-controlled infusion (TCI) and manually bolus showed similar control of anesthesia, such as depth of anaesthesia and hemodynamic stability, but did not use an objective measure of instantaneous autonomic activity during the brief time of induction anesthesia. In this study, TCI and manually bolus of propofol injection techniques during induction were studied with wavelet-based spectral analysis and the amplitudes of the pulse plethysmographic. The investigators hypothesized that during propofol induction anesthesia, the instantaneous ANS activities was more stable with TCI than traditional manually bolus

Full description

Propofol induction anesthesia has been reported to be associated with cardiovascular depression and autonomic nervous system (ANS), which is an important neural control system for maintaining cardiovascular stability and plays a major role in regulating cardiovascular homeostasis. There are many methods for the administration induction of propofol, such as a manually bolus or target-controlled infusion (TCI) techniques. TCI devices could rapidly achieve and maintain the desired predicted concentration and is a more satisfactory technique to reduce the incidence of side effects and with the advantage of better hemodynamic control. More precise knowledge of how anesthetic agents modify ANS activity is important for understanding subsequent cardiovascular responses. However, there was no study using validated measurement of ANS index comparing propofol induction anaesthesia with TCI or manually bolus would have different effects on ANS.

Enrollment

60 patients

Sex

All

Volunteers

No Healthy Volunteers

Inclusion criteria

  • patients scheduled for surgery under general anesthesia

Exclusion criteria

  • recent administration of sedative or opioid drugs
  • emergency surgery
  • impairment of renal, hepatic, cardiac or respiratory function

Trial design

60 participants in 2 patient groups

TCI group
Description:
Group I received TCI at 5-6 ug/ml target effect concentration (Ce)
Treatment:
Behavioral: observation of propofol ANS response
bolus group
Description:
groups II received an induction bolus of propofol (2-2.5mg/kg).
Treatment:
Behavioral: observation of propofol ANS response

Trial contacts and locations

2

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Data sourced from clinicaltrials.gov

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