Efficacy of Tapering Programmed Intermittent Bolus in Quadratus Lumborum Block - Double-Blind Randomized Trial -

Efficacy of Tapering Programmed Intermittent Bolus in Quadratus Lumborum Block - Double-Blind Randomized Trial - - Efficacy of Tapering Programmed Intermittent Bolus in Quadratus Lumborum Block - Double-Blind Randomized Trial -

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000060354

Enrollment

Registered

2026-02-04

Start date

2026-03-30

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Hip Osteoarthritis

Interventions

Tapering Programmed Intermittent Bolus Continuous infusion

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients aged 20 years or older at the time of consent acquisition, patients scheduled for elective total hip arthroplasty (THA) under general anesthesia with spinal anesthesia for osteoarthritis of the hip, patients with an ASA-PS classification of Class I to III, and patients for whom written informed consent for participation in this study can be obtained.

Exclusion criteria

Exclusion criteria: Patients unable to report VAS scores, patients whose QLB was discontinued mid-procedure, patients with inadequate conduction anesthesia effect at the end of anesthesia, patients undergoing bilateral simultaneous surgery or reoperation, and patients deemed unsuitable by the principal investigator or co-investigator.

Design outcomes

Primary

Measure	Time frame
Visual Analog Scale (VAS) at 24 hours and 48 hours post-surgery	—

Countries

Japan

Contacts

Public ContactYasuo Tsutsumi

Hiroshima University Graduate School of Biomedical and Health Sciences Department of Anesthesiology and Critical Care

yasuo223@hiroshima-u.ac.jp082-257-5267

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026