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Effect of Pre-injection of Rocuronium on Neuromuscular Blockade Onset Time and Hemodynamics During General Anesthesia Induction

2026년 7월 16일 업데이트: General Hospital of Ningxia Medical University

This is a single-center, prospective, randomized, controlled trial comparing pre-injection versus standard bolus administration of rocuronium bromide for general anesthesia induction. A total of 108 adult patients (18-65 years, ASA I-III) scheduled for elective surgery requiring endotracheal intubation will be enrolled and randomized 1:1 to either the pre-injection group or control group.

The pre-injection group will receive rocuronium 0.06 mg/kg as a priming dose followed by 0.54 mg/kg 3 minutes later. The control group will receive rocuronium 0.6 mg/kg as a single bolus. All patients will receive standardized anesthesia induction with midazolam and propofol.

The primary outcome is neuromuscular blockade onset time (seconds). Secondary outcomes include hemodynamic parameters (SBP, DBP, MAP, HR, CO, SV, SVR), injection pain incidence, and adverse events.

This study aims to investigate whether pre-injection of rocuronium can shorten neuromuscular blockade onset time while maintaining hemodynamic stability compared to standard bolus administration.

연구 개요

상태

모병

정황

개입 / 치료

연구 유형

중재적

등록 (추정된)

108

단계

  • 해당 없음

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 연락처

연구 장소

  • 중국
      • Yinchuan, 중국
        • 모병
        • General Hospital of Ningxia Medical University
        • 연락하다:

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

  • 성인
  • 고령자

건강한 자원 봉사자를 받아들입니다

예

설명

Inclusion Criteria:

  • Aged from 18 to 65 years old
  • American Society of Anesthesiologists (ASA) physical status classification Ⅰ, Ⅱ or Ⅲ
  • Elective surgery requiring general anesthesia with tracheal intubation
  • Able to understand the study and voluntarily sign written informed consent
  • Male or female, no gender restriction

Exclusion Criteria:

  • Severe hepatic dysfunction (ALT/AST > 3 times the upper limit of normal) or renal dysfunction (creatinine > 2 times the upper limit of normal)
  • Central nervous system diseases or severe neuromuscular disorders
  • Severe arrhythmia or cardiac dysfunction (NYHA class Ⅲ-Ⅳ, or ejection fraction EF < 30%)
  • Known hypersensitivity or allergy to rocuronium, midazolam, propofol or other study-related drugs
  • Refusal to participate in this clinical trial
  • Pregnant or breastfeeding women
  • History of predicted difficult airway requiring awake tracheal intubation
  • Contraindications to rapid sequence induction

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

  • 주 목적: 치료
  • 할당: 무작위
  • 중재 모델: 병렬 할당
  • 마스킹: 네 배로

무기와 개입

참가자 그룹 / 팔
개입 / 치료
실험적: Pretreated Rocuronium Group
의약품: Rocuronium Bromide (Pretreatment Injection)
Low-dose rocuronium bromide is injected intravenously in advance before anesthesia induction
활성 비교기: Conventional Administration Group
의약품: Rocuronium Bromide (Conventional Injection)
Rocuronium bromide is administered by standard routine intravenous injection during anesthesia induction

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
측정값 설명
기간
Neuromuscular blockade onset time
기간: Within 5 minutes after completion of rocuronium-bromide injection
The time interval from injection of rocuronium bromide to maximum neuromuscular block effect
Within 5 minutes after completion of rocuronium-bromide injection

2차 결과 측정

결과 측정
측정값 설명
기간
Systolic Blood Pressure (SBP)
기간: Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。
Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。
Diastolic Blood Pressure (DBP)
기간: Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。
Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。
Mean Arterial Pressure (MAP)
기간: Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。
Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。
Heart Rate (HR)
기간: Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。
Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。
Cardiac Output (CO)
기간: Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。

Measurement instrument: Non-invasive continuous blood pressure and cardiac output monitoring system (Model T20A).

Measurement method: Finger cuff volume pulse wave plethysmography, the device automatically calculates real-time CO value, unit: L/min.

Assessment method: Record stable CO value after waveform stabilization for 10 seconds at each time point; compare absolute value and percentage change vs baseline to evaluate the hemodynamic effect of rocuronium.
Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。
Stroke Volume (SV)
기간: Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。

Measurement instrument: Non-invasive continuous blood pressure and cardiac output monitoring system (Model T20A).

Measurement method: Continuous finger pulse wave monitoring, automatic calculation of stroke volume (unit: mL/beat).

Assessment method: Record stable SV readings at each time point and analyze dynamic changes compared with baseline.
Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。
Systemic Vascular Resistance (SVR)
기간: Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。

Measurement device: Non-invasive continuous blood pressure and cardiac output monitor (Model T20A).

Measurement method: SVR (unit: dyn·s·cm-⁵) is automatically calculated by the monitor using real-time mean arterial pressure, central venous pressure and cardiac output.

Assessment: SVR values were recorded once readings stabilized to assess changes in total peripheral vascular resistance after rocuronium administration.
Baseline (before rocuronium-bromide injection), 0.5-minute, 1-minute, 2-minute, 3-minute and 5-minute after rocuronium-bromide injection。
Injection Pain
기간: Pain assessment is performed within 5 minutes after completion of rocuronium injection.

Four-point grading scale for evaluating limb withdrawal reaction induced by injection pain:

0 = No limb contraction or twitching;

  1. = Only slight wrist movement, no movement of other arm joints;
  2. = Entire arm movement/withdrawal involving elbow, shoulder and other joints;
  3. = Systemic response with movements across multiple limbs beyond one single limb.

Subjects with a score ≥1 are defined as having injection pain.
Pain assessment is performed within 5 minutes after completion of rocuronium injection.
Limb Withdrawal Response
기간: Assessment shall be completed within 5 minutes after rocuronium injection.

Four-point grading scale for evaluating limb withdrawal reaction induced by injection pain:

0 = No limb contraction or twitching;

  1. = Only slight wrist movement, no movement of other arm joints;
  2. = Entire arm movement/withdrawal involving elbow, shoulder and other joints;
  3. = Systemic response with movements across multiple limbs beyond one single limb.

Subjects with a score ≥1 are defined as having injection pain.
Assessment shall be completed within 5 minutes after rocuronium injection.
Adverse Events
기간: Continuous assessment from the start of anesthesia induction until the end of surgery; the maximum assessment period is the perioperative period of a single operation.

Record adverse events occurring during perioperative period, including severe bradycardia (heart rate <45 beats per minute), hypotension (mean arterial pressure MAP <65 mmHg), various arrhythmias and allergic reactions. The number and incidence of each type of adverse event will be counted.

Assessment method: Vital signs are continuously monitored intraoperatively. Anesthesiologists identify and record all eligible adverse events in real time, with documentation of onset time, duration and corresponding interventions.
Continuous assessment from the start of anesthesia induction until the end of surgery; the maximum assessment period is the perioperative period of a single operation.

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

스폰서

General Hospital of Ningxia Medical University

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (추정된)

2026년 7월 1일

기본 완료 (추정된)

2026년 12월 1일

연구 완료 (추정된)

2026년 12월 1일

연구 등록 날짜

최초 제출

2026년 7월 4일

QC 기준을 충족하는 최초 제출

2026년 7월 16일

처음 게시됨 (실제)

2026년 7월 21일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)

2026년 7월 21일

QC 기준을 충족하는 마지막 업데이트 제출

2026년 7월 16일

마지막으로 확인됨

2026년 7월 1일

추가 정보

이 연구와 관련된 용어

키워드

추가 관련 MeSH 약관

기타 연구 ID 번호

  • KYLL-2026-0131

개별 참가자 데이터(IPD) 계획

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아니요

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아니

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