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Effects of Biased Opioid Agonists on Gastrointestinal Recovery After Gynecologic Laparoscopic Surgery

2026年11月3日 更新者:Shuangqing Wu、Hainan Medical College

Effects of Biased Opioid Receptor Agonists on Postoperative Gastrointestinal Function Recovery in Patients Undergoing Gynecologic Laparoscopic Surgery

This randomized controlled clinical trial aims to evaluate the effects of different opioid analgesics on gastrointestinal recovery after gynecologic laparoscopic surgery.

Opioid medications are commonly used to manage pain after surgery, but they may cause nausea, vomiting, constipation, and delayed recovery of bowel function. Biased μ-opioid receptor agonists, such as tegileridine and oliceridine, may provide effective pain relief with fewer gastrointestinal side effects than conventional opioids.

The main question is whether biased opioid receptor agonists can shorten the time to postoperative gastrointestinal recovery compared with sufentanil, a conventional opioid analgesic.

The study plans to enroll 212 adults undergoing elective gynecologic laparoscopic surgery. Participants will be randomly assigned to one of four groups:

  • Lower-dose tegileridine
  • Higher-dose tegileridine
  • Oliceridine
  • Sufentanil

After surgery, participants will receive the assigned medication through a patient-controlled intravenous analgesia (PCIA) pump.

The primary outcome is time to gastrointestinal recovery (GI-2), defined as the time from the end of surgery until both the first bowel movement (defecation) and tolerance of solid food have occurred. The later of these two events determines the GI-2 recovery time.

Researchers will also assess the time to first passage of flatus, postoperative nausea and vomiting, gastrointestinal function scores, pain intensity, gastrointestinal ultrasound findings, analgesic requirements, and medication-related adverse events.

The findings may help determine whether biased opioid receptor agonists offer advantages over conventional opioid analgesics in supporting gastrointestinal recovery while maintaining adequate postoperative pain control.

調査の概要

状態

募集

条件

介入・治療

詳細な説明

Postoperative gastrointestinal dysfunction is a common concern following gynecologic laparoscopic surgery. Although opioid analgesics are widely used for postoperative pain management, their effects on gastrointestinal motility may contribute to delayed bowel function recovery, postoperative nausea and vomiting, and patient discomfort.

Biased μ-opioid receptor agonists have been developed to provide analgesia through preferential activation of specific opioid receptor signaling pathways. Tegileridine and oliceridine are of clinical interest because of their potential to provide effective postoperative analgesia while reducing certain opioid-associated adverse effects. However, their effects on gastrointestinal recovery following gynecologic laparoscopic surgery remain to be established.

This study is a prospective, randomized, controlled, single-center clinical trial conducted at the Second Affiliated Hospital of Hainan Medical University. A total of 212 adult patients undergoing elective gynecologic laparoscopic surgery are planned to be enrolled.

Participants will be randomly allocated to four parallel treatment groups receiving postoperative patient-controlled intravenous analgesia (PCIA) with one of the following regimens:

  • Tegileridine 0.07 mg/kg
  • Tegileridine 0.11 mg/kg
  • Oliceridine 0.36 mg/kg
  • Sufentanil 2.0 micrograms/kg

The primary outcome is time to gastrointestinal recovery (GI-2), defined as the time from the end of surgery until both the first bowel movement (defecation) and tolerance of solid food have occurred. GI-2 recovery time is determined by the later of these two events and is measured in hours.

Secondary outcomes include time to first passage of flatus, time to first bowel movement, postoperative gastrointestinal function assessed using the I-FEED score, postoperative nausea and vomiting, postoperative pain intensity assessed using the Visual Analog Scale (VAS), patient-controlled analgesia use, rescue analgesia requirements, and medication-related adverse events.

Gastrointestinal ultrasound examinations will be performed to assess postoperative gastrointestinal function, including gastric antral cross-sectional area and small bowel peristaltic activity. These measurements are intended to provide additional objective information about gastrointestinal recovery.

The study will compare postoperative gastrointestinal recovery, analgesic effectiveness, and safety outcomes across the four treatment groups. The findings may provide clinical evidence to inform the selection of postoperative opioid analgesic regimens for patients undergoing gynecologic laparoscopic surgery.

研究の種類

介入

入学 (推定)

212

段階

  • フェーズ 4

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

研究場所

    • Hainan
      • Haikou、Hainan、中国、571199
        • 募集
        • The Second Affiliated Hospital of Hainan Medical University
        • コンタクト:

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

18年~75年 (大人、高齢者)

健康ボランティアの受け入れ

いいえ

受講資格のある性別

女性

説明

Inclusion Criteria:

  • Female patients aged 18 to 75 years scheduled for elective gynecologic laparoscopic surgery.
  • American Society of Anesthesiologists (ASA) physical status I-III.
  • Body mass index (BMI) between 18 and 30 kg/m².
  • Normal preoperative liver and kidney function, with cardiopulmonary function adequate to tolerate surgery.
  • Voluntary provision of written informed consent.

Exclusion Criteria:

  • Inability to provide informed consent before surgery or difficulty communicating.
  • Known allergy to any of the study medications.
  • Severe hepatic impairment (Child-Pugh class C), severe renal impairment (creatinine clearance below 30 mL/min), or ongoing long-term dialysis.
  • Severe cardiovascular or cerebrovascular disease, including myocardial infarction, cardiac arrest, decompensated heart failure, significant arrhythmias (such as second-degree or higher atrioventricular block without a pacemaker), congenital heart disease, severe valvular disease, extensive cerebral hemorrhage, or cerebral infarction; or significant respiratory disease, including a history of asthma, acute exacerbation of chronic obstructive pulmonary disease, or previous pulmonary resection.
  • History of long-term opioid use before surgery or chronic pain.
  • Pregnancy or breastfeeding.
  • Other severe medical conditions or psychiatric disorders that make participation in the study unsuitable.

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか?

デザインの詳細

  • 主な目的:処理
  • 割り当て:ランダム化
  • 介入モデル:並列代入
  • マスキング:ダブル

武器と介入

参加者グループ / アーム
介入・治療
実験的:Low-Dose Tegileridine

Participants receive postoperative patient-controlled intravenous analgesia (PCIA) with tegileridine at a prescribed dose of 0.07 mg/kg.

Tegileridine is administered by patient-controlled intravenous analgesia (PCIA) after gynecologic laparoscopic surgery. The prescribed dose is 0.07 mg/kg in the low-dose group and 0.11 mg/kg in the high-dose group. Participants receive only their assigned dose regimen.

実験的:High-Dose Tegileridine

Participants receive postoperative patient-controlled intravenous analgesia (PCIA) with tegileridine at a prescribed dose of 0.11 mg/kg.

Tegileridine is administered by patient-controlled intravenous analgesia (PCIA) after gynecologic laparoscopic surgery. The prescribed dose is 0.07 mg/kg in the low-dose group and 0.11 mg/kg in the high-dose group. Participants receive only their assigned dose regimen.

実験的:Oliceridine

Participants receive postoperative patient-controlled intravenous analgesia (PCIA) with oliceridine at a prescribed dose of 0.36 mg/kg.

Oliceridine is administered by patient-controlled intravenous analgesia (PCIA) after gynecologic laparoscopic surgery at a prescribed dose of 0.36 mg/kg.

実験的:Sufentanil

Participants receive postoperative patient-controlled intravenous analgesia (PCIA) with sufentanil at a prescribed dose of 2.0 micrograms/kg.

Sufentanil is administered by patient-controlled intravenous analgesia (PCIA) after gynecologic laparoscopic surgery at a prescribed dose of 2.0 micrograms/kg. This group serves as the active comparator.

この研究は何を測定していますか?

主要な結果の測定

結果測定
メジャーの説明
時間枠
Time to Gastrointestinal Recovery (GI-2)
時間枠:From the end of surgery up to 7 days postoperatively.

GI-2 is defined as the time from the end of surgery until both the first bowel movement (defecation) and tolerance of solid food have occurred. The later of these two events determines the GI-2 recovery time, measured in hours. Participants who do not achieve GI-2 within 7 days will be recorded as not having reached the endpoint during the follow-up period.

From the end of surgery up to 7 days postoperatively.

二次結果の測定

結果測定
メジャーの説明
時間枠
Time to First Passage of Flatus
時間枠:From the end of surgery up to 7 days postoperatively.

Time from the end of surgery to the first passage of flatus, measured in hours. A shorter time indicates earlier recovery of postoperative bowel function.

From the end of surgery up to 7 days postoperatively.
Postoperative Gastrointestinal Function (I-FEED Score)
時間枠:At 6, 24, and 48 hours postoperatively.

Gastrointestinal function assessed using the I-FEED score at each scheduled postoperative assessment. The protocol describes a score ranging from 0 to 10, with higher scores indicating worse gastrointestinal function.

At 6, 24, and 48 hours postoperatively.
Postoperative Pain Intensity (VAS Score)
時間枠:At 6, 24, and 48 hours postoperatively.

Postoperative pain intensity assessed using a 0-to-10 Visual Analog Scale, where 0 indicates no pain and 10 indicates the worst imaginable pain. Scores are recorded at each scheduled assessment.

At 6, 24, and 48 hours postoperatively.
Incidence of Postoperative Nausea and Vomiting
時間枠:Within 48 hours postoperatively.

Percentage of participants experiencing at least one episode of nausea or vomiting within 48 hours after surgery.

Within 48 hours postoperatively.
Small Bowel Peristaltic Frequency
時間枠:At 6, 24, and 48 hours postoperatively.

Frequency of small bowel peristaltic movements assessed by ultrasonography, expressed as contractions per minute.

At 6, 24, and 48 hours postoperatively.
Incidence of Opioid-Related Adverse Reactions
時間枠:Within 48 hours postoperatively.

Percentage of participants experiencing at least one opioid-related adverse reaction, including dizziness, somnolence, respiratory depression, pruritus, abdominal distension, or constipation, within 48 hours after surgery.

Within 48 hours postoperatively.
Number of Patient-Controlled Analgesia Button Presses
時間枠:Within 48 hours postoperatively.

Total number of patient-initiated button presses recorded by the patient-controlled intravenous analgesia pump during the first 48 hours after surgery.

Within 48 hours postoperatively.
Number of Rescue Analgesia Administrations
時間枠:Within 48 hours postoperatively.

Total number of rescue analgesic administrations received by each participant within 48 hours after surgery.

Within 48 hours postoperatively.

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

協力者

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (実際)

2026年6月1日

一次修了 (推定)

2026年12月20日

研究の完了 (推定)

2026年12月25日

試験登録日

最初に提出

2026年11月3日

QC基準を満たした最初の提出物

2026年11月3日

最初の投稿 (実際)

2026年11月9日

学習記録の更新

投稿された最後の更新 (実際)

2026年11月9日

QC基準を満たした最後の更新が送信されました

2026年11月3日

最終確認日

2026年6月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • 2026-K51-01

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