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Effective Dose of Remimazolam for Sedation in Patients Undergoing Lower Extremity Surgery Under Spinal Anesthesia

NCT ID: NCT05379777

Last Updated: 2022-12-19

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

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

51 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-05-11

Study Completion Date

2022-08-24

Brief Summary

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Currently used drugs for monitored general anesthesia include propofol, midazolam, and dexmedetomidine. Each drug has different advantages and disadvantages. Remimazolam causes a relatively small decrease in blood pressure, and it has no injection pain. In addition, remimazolam has a very short onset time, and even after the continuous infusion, the onset of remimazolam is fast, and even after continuous injection, the effect disappeared very quickly due to the short context-sensitive half time. and through continuous infusion, the patient's depth of anesthesia can be maintained constant. In addition, the short duration of action and the ability to quickly reverse the effect of flumazenil suggest that remimazolam can be used effectively under general anesthesia as well as under general anesthesia. Remimazolam can be used as a continuous infusion for general anesthesia. However, it has also been reported to be used for sedation by continuous infusion or divided intravenous infusion. However, the effective infusion dose of remimazolam for supervised general anesthesia without mechanical ventilation has not been established.

In this study, the ED90 of the maintenance dose that maintain loss of consciousness in patients when supervised general anesthesia is performed through continuous infusion of remimazolam after spinal anesthesia is obtained.

Detailed Description

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Conditions

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Remimazolam Orthopedic Procedures Sedatives Anesthesia, Spinal

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Remimazolam

A maintenance dose of remimazolam is administered for sedation

Group Type EXPERIMENTAL

Remimazolam

Intervention Type DRUG

Remimazolam The starting dose of remimazolam is 1 mg/kg/hr. If sedation does not proceed successfully, increase the infusion rate by 0.2 mg/kg/hr in the next patient. (However, if the infusion rate is less than 0.6mg/kg/hr, the dose is increased by 0.1mg/kg/hr.) If sedation has progressed successfully until the end of surgery, the next patient will use the same dose with a probability of 0.89 or 0.11 It is reduced by 0.2 mg/kg/hr with a probability of (However, if the infusion rate is 0.6mg/kg/hr or less, reduce it by 0.1mg/kg/hr.)

Interventions

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Remimazolam

Remimazolam The starting dose of remimazolam is 1 mg/kg/hr. If sedation does not proceed successfully, increase the infusion rate by 0.2 mg/kg/hr in the next patient. (However, if the infusion rate is less than 0.6mg/kg/hr, the dose is increased by 0.1mg/kg/hr.) If sedation has progressed successfully until the end of surgery, the next patient will use the same dose with a probability of 0.89 or 0.11 It is reduced by 0.2 mg/kg/hr with a probability of (However, if the infusion rate is 0.6mg/kg/hr or less, reduce it by 0.1mg/kg/hr.)

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* ASA PS 1-3
* Patients undergoing lower extremity surgery under spinal anesthesia and sedation using remimazolam

Exclusion Criteria

* Patients who refuse to participate in this study
* Patients with hypersensitivity to benzodiazepine or flumazenil
* Patients with severe renal/hepatic disease
* Patients with drug/alcohol abuse
* Patients who take antidepressants, anticonvulsants, psychoactive drugs chronically
* Patients with difficulty in communication
* Patients with severe obstructive sleep apnea or other airway problems
* Patients contraindicated to regional anesthesia
* Patients judged to be inappropriate for this study
Minimum Eligible Age

19 Years

Maximum Eligible Age

79 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Asan Medical Center

OTHER

Sponsor Role lead

Responsible Party

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Hajung Kim

Clinical Assistant Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Asan Medical Center

Seoul, , South Korea

Site Status

Countries

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South Korea

Other Identifiers

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2021-1638

Identifier Type: -

Identifier Source: org_study_id