The correlation and predictive study between preoperative pupil function status and postoperative pain occurrence

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Observational

Source

ChiCTR

Registry ID

ChiCTR2400082643

Enrollment

Unknown

Registered

2024-04-02

Start date

2024-04-05

Completion date

Unknown

Last updated

2024-04-08

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

Conditions

Postoperative Pain

Interventions

Postoperative pain group/ Non postoperative pain group:None

Eligibility

Sex/Gender

All

Age

65 Years to 85 Years

Inclusion criteria

Inclusion criteria: 1. Age = 65 years 2. ASA grade I-III 3. Elective thoracoscopic pneumonectomy

Exclusion criteria

Exclusion criteria: 1. Have eye disease, eye surgery 2. Neuromuscular dysfunction 3. Diabetes, thyroid dysfunction 4. Pupil deformity 5. Use of drugs that affect pupil size, use of alpha or beta blockers 6. Scheduled surgery duration >120 minutes 7. Scheduled to undergo neurosurgery

Design outcomes

Primary

Measure	Time frame
Maximum PD;Minimum PD;Percentage change;Latency of constriction;Average constriction velocity;Maximum constriction velocity ;Average dilatation velocity;Acute pain occurrence within 24 hours;	—

Secondary

Measure	Time frame
Pain occurrence 1 month and 3 months after surgery;	—

Countries

China

Contacts

Public ContactShi Cunxian

Yantai Yuhuangding Hospital

shicunxian@163.com+86 135 6252 2206

Outcome results

None listed

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