The effect of different angles of reverse Trendelenburg position on intraoperative bleeding and cerebral oxygen saturation during endoscopic sinus surgery: a prospective, randomized, blinded study

Status

Recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2000030684

Enrollment

Unknown

Registered

2020-03-09

Start date

2020-03-16

Completion date

Unknown

Last updated

2020-03-16

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

Conditions

Chronic sinusitis

Interventions

S group:supine

5-RTP group:5 degree reverse Trendelenburg position

10-RTP group:10 degree reverse Trendelenburg position

15-RTP group:15 degree reverse Trendelenburg position

Eligibility

Sex/Gender

All

Age

19 Years to 65 Years

Inclusion criteria

Inclusion criteria: 1. American Society of Anesthesiologists (ASA) class I-II; 2. Aged 19-65 years old. 3. Schedule for nasal endoscopic surgery.

Exclusion criteria

Exclusion criteria: 1. With severe ischemic heart disease; 2. With pulmonary or renal disease; 3. Patients using platelet inhibitors or undergoing anticoagulation therapy; 4. With coagulopathy and pregnancy.

Design outcomes

Primary

Measure	Time frame
Boezaart grading scale;	—

Secondary

Measure	Time frame
Cerebral oxygen saturation;total blood loss;numerical rating scale;	—

Countries

China

Contacts

Public ContactGuyan Wang

Beijing Tongren Hospital Affiliated to Capital Medical University

guyanwang2006@163.com+86 13910985139

Outcome results

None listed

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