Preoperative Anxiolysis With Intravenous Midazolam on Intraoperative Sevoflurane Gas Consumption

Sevoflurane Clinical Trial

Official title:

The Effect of Preoperative Anxiolysis With Intravenous Midazolam on Intraoperative Sevoflurane Gas Consumption: A Prospective Randomized Controlled Study

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05371600
• Other study ID #: 14949
• Status: Completed
• Phase: Phase 4
• Start date: December 2, 2022
• Est. completion date: April 30, 2024

Study information

• Verified date: April 2024
• Source: Cukurova University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This prospective, randomized, double-blind, placebo-controlled study is performed after obtaining written informed consent of patients who are scheduled for elective general surgery. After the admission to the preoperative unit 30 minutes before the surgery, The preoperative anxiety of patients is evaluated by The State-Trait Anxiety Inventory (STAI). Patients are randomly assigned to one of two groups in a 1:1 ratio by a computer-generated list. Patients receive midazolam IV at 0.04 mg/kg (group M) and an equal volume of saline IV (group C, control group). Anesthesia is induced with 2mg/kg of IV propofol. At a dose of 0.6 mg/kg, IV rocuronium bromide is given for neuromuscular blockade. Anesthesia is maintained at 2% sevoflurane. At the end of the surgery, anesthesia is terminated and the awake patients are extubated.

Description:

An equal depth of anesthesia is achieved by evaluating an entropy value of 40-50 during the operation. Heart rate, blood pressure, the amount of sevoflurane consumed (ml), end-tidal sevoflurane concentration (%), sevoflurane MAC, inspiratory sevoflurane (%) are recorded at baseline and 15-minute intervals.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 80
• Est. completion date: April 30, 2024
• Est. primary completion date: April 30, 2024
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 60 Years

Eligibility

Inclusion Criteria:

• American Society of Anesthesiologists physical status 1 and 2
• patients who are scheduled for elective surgery
• BMI <30

Exclusion Criteria:

• history of psychiatric disease
• use of psychotropic medications
• neurological disorders
• cancer
• chronic pain
• cardiovascular, respiratory, and hepatic diseases.

Related Conditions & MeSH terms

• Midazolam
• Sevoflurane

Intervention

Drug:
• Midazolam
midazolam IV at 0.04 mg/kg

Other:
• Saline
an equal volume of saline IV

Locations

Country	Name	City	State
Turkey	Department of Anesthesiology, Cukurova University Faculty of Medicine	Adana

Sponsors (1)

Lead Sponsor	Collaborator
Cukurova University

Country where clinical trial is conducted

Turkey, 

References & Publications (4)

Ip HY, Abrishami A, Peng PW, Wong J, Chung F. Predictors of postoperative pain and analgesic consumption: a qualitative systematic review. Anesthesiology. 2009 Sep;111(3):657-77. doi: 10.1097/ALN.0b013e3181aae87a. — View Citation

Kil HK, Kim WO, Chung WY, Kim GH, Seo H, Hong JY. Preoperative anxiety and pain sensitivity are independent predictors of propofol and sevoflurane requirements in general anaesthesia. Br J Anaesth. 2012 Jan;108(1):119-25. doi: 10.1093/bja/aer305. Epub 2011 Nov 13. — View Citation

Maranets I, Kain ZN. Preoperative anxiety and intraoperative anesthetic requirements. Anesth Analg. 1999 Dec;89(6):1346-51. doi: 10.1097/00000539-199912000-00003. — View Citation

Melvin MA, Johnson BH, Quasha AL, Eger EI 3rd. Induction of anesthesia with midazolam decreases halothane MAC in humans. Anesthesiology. 1982 Sep;57(3):238-41. doi: 10.1097/00000542-198209000-00018. No abstract available. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	sevoflurane MAC	sevoflurane MAC	1 hour
Other	inspiratory sevoflurane (%)	inspiratory sevoflurane (%)	1 hour
Primary	Sevoflurane consumption	The amount of sevoflurane consumed (ml)	1 hour
Secondary	end-tidal sevoflurane concentration (%)	end-tidal sevoflurane concentration (%)	1 hour