SPI and Remifentanil in Skull Pin Fixation

Pain, Procedural Clinical Trial

Official title:

To Explore the Optimal Dose of Remifentanil for Skull Pin Fixation Under Surgical Pleth Index Monitor in Intracranial Surgery

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT06331663
• Other study ID #: KMUHIRB-F(II)-20240055
• Status: Not yet recruiting
• Phase: Phase 4
• Start date: April 1, 2024
• Est. completion date: June 20, 2024

Study information

• Verified date: January 2024
• Source: Kaohsiung Medical University Chung-Ho Memorial Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Forty patients were enrolled, and all patients used total intravenous anesthesia (remifentanil-propofol based total intravenous analgesia) as anesthesia induction and maintenance. According to the preliminary data of this department, patients who underwent intracranial surgery for skull pin fixation used remifentanil 5.0-6.0 ng/ml, while the hemodynamics is relatively stable. Therefore, when this plan is implemented, the patient needs to be under the same depth of anesthesia (monitored by electroencephalography, maintaining a value of 40-60), first start with remifentanil 5.0 ng/ml, and use the up and down method as adjust 0.5 ng/ml of concentration of remifentanil each time. Inadequate antinociception (Surgical Pleth Index(SPI) > 80 and hyperdynamics (the increased heart rate (HR) and mean blood pressure (MBP) above 20% of baseline or HR>100bpm and arterial blood pressure(ABP)>180/100mmHg)) is defined as failure, therefore we increase remifentanil by 0.5 ng/ml; otherwise, the setting is considered successful without abovementioned situations.

Data collection: heart rate, mean blood pressure, Surgical Pleth Index, bispectral Index, pulse pressure variance, systolic pressure variance, concentrations of propofol and remifentanil before 2 mins, during, 5, and 15 mins of skull pin fixation were recorded and analyzed.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 27
• Est. completion date: June 20, 2024
• Est. primary completion date: June 20, 2024
• Accepts healthy volunteers: No
• Gender: All
• Age group: 20 Years to 80 Years

Eligibility

Inclusion Criteria:

1. Must be at least 20 years old and less than 80 years old

2. With anesthesia risk grade below grade three (including grade three) (ASA I~III).

3. Patients who are expected to undergo intracranial surgery for skull pin fixation

Exclusion Criteria:

1. Those with anesthesia risk classification ASA class IV or higher

2. Those who are allergic to opioid analgesics or propofol drugs

3. Emergency patients

Related Conditions & MeSH terms

• Pain, Procedural

Intervention

Drug:
• Remifentanil
first start with remifentanil 5.0 ng/ml, and use the up and down method as adjust 0.5 ng/ml of concentration of remifentanil each time. Inadequate antinociception (Surgical Pleth Index(SPI) > 80 and hyperdynamics (the increased heart rate (HR) and mean blood pressure (MBP) above 20% of baseline or HR>100bpm and arterial blood pressure(ABP)>180/100mmHg)) is defined as failure, therefore we increase remifentanil by 0.5 ng/ml; otherwise, the setting is considered successful without abovementioned situations.

Locations

Country	Name	City	State
Taiwan	Kaohsiung Medical University Chung-Ho Memorial Hospital	Kaohsiung

Sponsors (1)

Lead Sponsor	Collaborator
Kaohsiung Medical University Chung-Ho Memorial Hospital

Country where clinical trial is conducted

Taiwan, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	50% effect concentration of remifentanil	50% effect concentration of remifentanil will be recorded at 2 mins before fixation, during fixation, 5 mins after fixation, and 15 mins after fixation.	peri-fixation period
Primary	90% effect concentration of remifentanil	90% effect concentration of remifentanil will be recorded at 2 mins before fixation, during fixation, 5 mins after fixation, and 15 mins after fixation.	peri-fixation period