Effects of different ventilation modes on the diameter of optic nerve sheath in elderly patients undergoing laparoscopic colorectal cancer surgery

Status

Recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2000034021

Enrollment

Unknown

Registered

2020-06-21

Start date

2020-07-01

Completion date

Unknown

Last updated

2020-06-29

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

Conditions

Anesthesia for colorectal cancer operation

Interventions

P:Pressure control ventilation

V:Volume control ventilation

Eligibility

Sex/Gender

All

Age

55 Years to 80 Years

Inclusion criteria

Inclusion criteria: 1. Patients undergoing laparoscopic radical resection of colorectal cancer under selective general anesthesia; 2. Patients aged 60-80 years old; 3. ASA grade I-II; 4. BMI 1830kg/m2

Exclusion criteria

Exclusion criteria: (1) A history of increased intracranial pressure syndrome (intracranial lesions, cerebrovascular disease, etc.); (2) Have undergone ophthalmic surgery or have a history of ophthalmic diseases (glaucoma, diabetic retinopathy, cataract, and retinal detachment, etc.); (3) Severe heart and lung diseases (pulmonary infection, atelectasis, chronic obstructive disease, asthma, etc.); (4) Those who have mental illness or refuse to participate in the trial;

Design outcomes

Primary

Measure	Time frame
Diameter of optic nerve sheath;	—

Secondary

Measure	Time frame
Hemodynamic index;??????;Postoperative index;	—

Countries

China

Contacts

Public ContactZhidong Zhou

The Second Affiliated Hospital of Nanchang University

dongdongzhi@163.com+86 13970932882

Outcome results

None listed

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