Pressure Supporting Ventilation and EEG-guided Emergence for Free of Unwanted Complications

NCT ID: NCT06165562

Last Updated: 2024-03-12

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

Clinical Phase

NA

Total Enrollment

120 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-01-05

Study Completion Date

2024-12-30

Brief Summary

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This study aims to assess whether pressure supporting ventilation and electroencephalogram (EEG)-guided emergence can reduce airway complications after thyroid surgery compared with conventional emergence. Patients will be randomly assigned to either pressure supporting ventilation and EEG-guided emergence group (intervention group) or conventional emergence group (control group). Co-primary outcomes are the incidence of emergence coughing and lowest percutaneous oxygen saturation (SpO2) after emergence. Secondary outcomes included severity of emergence cough, emergence time, blood pressure and heart rate during emergence, Richmond Agitation-Sedation Scale (RASS) immediately after extubation and upon post-anesthesia care unit (PACU) arrival, incidence of desaturation during PACU stay, hoarseness, sore throat during PACU stay, duration of PACU stay, surgeon satisfaction regarding emergence process, postoperative pain score, and patient satisfaction score regarding emergence process.

Detailed Description

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Adult patients aged \< 40 years scheduled to undergo thyroid surgery will be screened for eligibility. Patients will be randomly allocate to either the intervention group or control group.

* In the intervention group, pressure support ventilation will be applied from the start of subcutaneous suture until extubation. At the end of surgery, sevoflurane will be discontinued, and the attending anesthesiologist will perform tracheal extubation after observing the 'zipper opening' pattern on the EEG spectrogram, indicating the patient's recovery of consciousness. For safety reason, extubation will also be guided by the following processed EEG indices thresholds:

1. 95% spectral edge frequency (SEF) ≥ 23
2. Patient state index (PSI) ≥ 64
* In the control group, conventional full-awake extubation will be performed based on the routine practice of our institution. At the end of surgery, sevoflurane will be stopped, and the attending anesthesiologist will lead the emergence process, allowing the patient to breathe spontaneously and providing intermittent manual assistance if necessary. Extubation will be performed when the patient meets the following criteria: obeys commands such as eye-opening or hand-grip, tidal volume \> 5 ml/kg, end-tidal carbon dioxide \< 45 mmHg, spontaneous respiratory rate 10 to 20 breaths/min.

In both groups, the Oxygen Reserve Index (ORi) will be monitored. Blinded investigator will assess the incidence of emergence coughing and the lowest SpO2 after emergence.

Conditions

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Thyroid Surgery

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Prospective, single-blinded, parallel-group, randomized clinical study
Primary Study Purpose

PREVENTION

Blinding Strategy

DOUBLE

Investigators Outcome Assessors
Patients, medical staff responsible for measuring outcome variables, surgeons, and nurses in the recovery room and wards will be blinded. This blinding approach ensures that both medical staff and patients remain unaware of the assigned group throughout the study.

Study Groups

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Pressure Supporting Ventilation (PSV) and EEG-guided Emergence group

Pressure support ventilation will be applied from the start of subcutaneous suture until extubation. At the end of surgery, sevoflurane will be discontinued, and the attending anesthesiologist will perform tracheal extubation after observing the 'zipper opening' pattern on the EEG spectrogram, indicating the patient's recovery of consciousness. For safety reason, extubation will also be guided by the following processed EEG indices thresholds:

1. 95% spectral edge frequency (SEF) ≥ 23
2. Patient state index (PSI) ≥ 64

Group Type EXPERIMENTAL

PSV

Intervention Type PROCEDURE

Pressure support ventilation applied from the start of subcutaneous suture until extubation.

EEG-Guidance

Intervention Type PROCEDURE

Extubation criteria based on EEG findings:Zipper opening pattern observed in the spectrogram 95% spectral edge frequency (SEF) ≥ 23 Patient state index (PSI) ≥ 64

Spontaneous Respiration

Intervention Type PROCEDURE

Extubation criteria include:

Tidal volume \> 5 ml/kg End-tidal carbon dioxide (ETCO2) \< 45 mmHg Spontaneous respiratory rate (RR) 10 to 20 breaths/min

Conventional Emergence group

Conventional full-awake extubation will be performed based on the routine practice of our institution. At the end of surgery, sevoflurane will be stopped, and the attending anesthesiologist will lead the emergence process, allowing the patient to breathe spontaneously and providing intermittent manual assistance if necessary. Extubation will be performed when the patient meets the following criteria: obeys commands such as eye-opening or hand-grip, tidal volume \> 5 ml/kg, end-tidal carbon dioxide \< 45 mmHg, spontaneous respiratory rate 10 to 20 breaths/min.

Group Type ACTIVE_COMPARATOR

Intermittent Manual Assistance

Intervention Type PROCEDURE

Volume-controlled mode during surgery, with intermittent manual assistance from the end of surgery until extubation.

Obey Command

Intervention Type PROCEDURE

Extubation criteria include obeying commands (eye-opening or handgrip).

Spontaneous Respiration

Intervention Type PROCEDURE

Extubation criteria include:

Tidal volume \> 5 ml/kg End-tidal carbon dioxide (ETCO2) \< 45 mmHg Spontaneous respiratory rate (RR) 10 to 20 breaths/min

Interventions

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PSV

Pressure support ventilation applied from the start of subcutaneous suture until extubation.

Intervention Type PROCEDURE

Intermittent Manual Assistance

Volume-controlled mode during surgery, with intermittent manual assistance from the end of surgery until extubation.

Intervention Type PROCEDURE

EEG-Guidance

Extubation criteria based on EEG findings:Zipper opening pattern observed in the spectrogram 95% spectral edge frequency (SEF) ≥ 23 Patient state index (PSI) ≥ 64

Intervention Type PROCEDURE

Obey Command

Extubation criteria include obeying commands (eye-opening or handgrip).

Intervention Type PROCEDURE

Spontaneous Respiration

Extubation criteria include:

Tidal volume \> 5 ml/kg End-tidal carbon dioxide (ETCO2) \< 45 mmHg Spontaneous respiratory rate (RR) 10 to 20 breaths/min

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Adult patients aged under 40 years who are scheduled to undergo thyroid surgery.

Exclusion Criteria

* Patients scheduled for radical neck dissection
* Patients scheduled for lymph node biopsy
* Patients with an anticipated difficult airway
* Patients experiencing difficulty during intubation
* Patients with a fasting time not meeting institutional policy
* Patients with a body mass index (BMI) greater than 30 kg/m²
* Patients with sleep apnea
* Pregnant or breastfeeding women
* Patients unable to communicate
Minimum Eligible Age

19 Years

Maximum Eligible Age

39 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Gangnam Severance Hospital

OTHER

Sponsor Role lead

Responsible Party

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Young Song

Associcate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Gangnam Severance Hospital

Seoul, , South Korea

Site Status RECRUITING

Countries

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South Korea

Facility Contacts

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Sun-Kyung Park

Role: primary

82-2-2019-4601

References

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Difficult Airway Society Extubation Guidelines Group; Popat M, Mitchell V, Dravid R, Patel A, Swampillai C, Higgs A. Difficult Airway Society Guidelines for the management of tracheal extubation. Anaesthesia. 2012 Mar;67(3):318-40. doi: 10.1111/j.1365-2044.2012.07075.x.

Reference Type BACKGROUND
PMID: 22321104 (View on PubMed)

Purdon PL, Pierce ET, Mukamel EA, Prerau MJ, Walsh JL, Wong KF, Salazar-Gomez AF, Harrell PG, Sampson AL, Cimenser A, Ching S, Kopell NJ, Tavares-Stoeckel C, Habeeb K, Merhar R, Brown EN. Electroencephalogram signatures of loss and recovery of consciousness from propofol. Proc Natl Acad Sci U S A. 2013 Mar 19;110(12):E1142-51. doi: 10.1073/pnas.1221180110. Epub 2013 Mar 4.

Reference Type BACKGROUND
PMID: 23487781 (View on PubMed)

Jeong H, Tanatporn P, Ahn HJ, Yang M, Kim JA, Yeo H, Kim W. Pressure Support versus Spontaneous Ventilation during Anesthetic Emergence-Effect on Postoperative Atelectasis: A Randomized Controlled Trial. Anesthesiology. 2021 Dec 1;135(6):1004-1014. doi: 10.1097/ALN.0000000000003997.

Reference Type BACKGROUND
PMID: 34610099 (View on PubMed)

Other Identifiers

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3-2023-0338

Identifier Type: -

Identifier Source: org_study_id

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