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Effects of Ultrasound-Guided Nerve Block on Postoperative Confusion in Elderly Patients Undergoing Kidney Stone Surgery

Effects of Ultrasound-Guided Thoracic Paravertebral Nerve Block on Postoperative Delirium in Elderly Patients Undergoing Percutaneous Nephrolithotomy

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600116816
Enrollment
Unknown
Registered
2026-01-15
Start date
2026-02-01
Completion date
Unknown
Last updated
2026-01-27

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

Conditions

Postoperative Delirium

Interventions

Intervention Group:Ultrasound-guided thoracic paravertebral block

Sponsors

The First Affiliated Hospital of Gannan Medical University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
65 Years to No maximum

Inclusion criteria

Inclusion criteria: 1.Age >=65 years; 2.Scheduled to undergo percutaneous nephrolithotomy (PCNL); 3.Informed consent obtained from the patient or legal guardian; 4.American Society of Anesthesiologists (ASA) Physical Status Class I to III; 5.Body mass index (BMI) < 30 kg/m^2; 6.Negative preoperative screening with the 3-Minute Diagnostic Interview for CAM (3D-CAM); 7.Ability to communicate effectively.

Exclusion criteria

Exclusion criteria: 1.History of neurological disorders or impaired cognitive function; 2.History of psychiatric disorders, or current use of medications that may affect cognition or substance addiction; 3.Contraindications to neuraxial or peripheral nerve block; 4.epatic or renal dysfunction, or severe cardiopulmonary disease; 5.Known allergy to ropivacaine, opioids, or emulsion-based formulations; 6.Spinal deformity; 7.Occurrence of severe perioperative complications.

Design outcomes

Primary

MeasureTime frame
Postoperative Delirium;

Countries

China

Contacts

Public ContactDandan Zhang

The First Affiliated Hospital of Gannan Medical University

1251663356@qq.com+86 797 868 9063

Outcome results

None listed

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