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Establishing the Median Effective Doses of Tegileridine for Immediate Post-Surgical Analgesia Following Laparoscopic Colorectal Cancer Surgery: A Sequential Dose-Finding Study

Establishing the Median Effective Doses of Tegileridine for Immediate Post-Surgical Analgesia Following Laparoscopic Colorectal Cancer Surgery: A Sequential Dose-Finding Study

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2500111476
Enrollment
Unknown
Registered
2025-10-31
Start date
2025-11-03
Completion date
Unknown
Last updated
2025-11-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

colorectal cancer

Interventions

Tegileridine group:A modified Dixon's up-and-down sequential method was employed, starting with an initial tegileridine dose of 15 µg/kg and a dose ratio of 1:1.1 between consecutive patients. Patient

Sponsors

Shanghai Changhai Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: 1. 18 years old <= age <=65 years old in-patients with colorectal cancer surgery, both men and women; 2. Patients undergoing elective laparoscopic colorectal cancer surgery under general anesthesia who are expected to require 48-hour postoperative patient-controlled intravenous analgesia (moderate or severe pain) ; 3. General anesthesia tracheal intubation, ASA Anesthesia Class I-III; 4. 18.5 kg/m^2<= body mass index < 30 kg/m^2; 5. Subjects fully understand the purpose, content, procedure, and risks of the trial and voluntarily participate in the clinical trial with signed informed consent.

Exclusion criteria

Exclusion criteria: 1. Contraindications to the use of tiagilidine fumarate (e.g. known or suspected intestinal obstruction, severe respiratory depression-patients with oxygen saturation below 90% in inhaled air) ; 2. Dependence on opioids and other analgesics; use of opioid agonists/antagonists within 24 h before surgery (or within 5 half-lives of drug instructions) ; Or other medications/treatments that may affect the analgesic effect, including but not limited to NSAIDs, opioids, pregabalin, sedatives, etc. ; 3. With severe cardiovascular disease-within the first 6 months, the following cardiovascular events occurred: acute coronary syndrome, coronary artery bypass grafting, percutaneous coronary intervention (except diagnostic angiography) , heart failure (New York Heart Association [ NYHA ] Class III or IV ] , severe or requiring treatment arrhythmia, cerebrovascular accident (including Tia) ; 4. Patients with severe respiratory disease (i.e. severe asthma, chronic obstructive pulmonary disease, pulmonary heart disease, oxygen saturation below 90%) ; 5. Presence of hepatic or renal dysfunction (any of the following abnormalities in our laboratory screening values: ALT and/or AST > 2 times the upper limit of normal, BUN > 2 times the upper limit of normal, or CR > the upper limit of normal) ; 6. Patients with severe central nervous system disease or definite mental illness, or who are unable to understand and cooperate with pain scores; 7. Patients with abnormal coagulation function, these included patients with congenital bleeding disorders (e.g. , hemophilia) , thrombocytopenia (platelet count below 80 × 109L) , Coagulopathy (PT prolongation exceeding the upper limit of normal by 3 s or APTT prolongation exceeding the upper limit of normal by 10 s) , or a history of diseases related to abnormal platelet function; 8. Patients who are allergic to the drugs involved in this study or who have other contraindications; 9. Patients who participated in other clinical studies.

Design outcomes

Primary

MeasureTime frame
Analgesic dose of tapentadol fumarate;

Secondary

MeasureTime frame
Incidence of drug-related adverse reactions;NRS Score;The usage rate, frequency, and dosage of painkillers;Number of effective presses and drug consumption;

Countries

China

Contacts

Public ContactBo Lulong

Shanghai Changhai Hospital

bartbo@smmu.edu.cn+86 138 1728 3189

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026