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Effects of Different Preoxygenation Methods on Atelectasis After Anesthesia Induction: A Randomized Controlled Trial

Effects of Different Preoxygenation Methods on Atelectasis After Anesthesia Induction: A Randomized Controlled Trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600128983
Enrollment
Unknown
Registered
2026-07-29
Start date
2026-09-01
Completion date
Unknown
Last updated
2026-08-03

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

Conditions

Atelectasis following general anesthesia induction

Interventions

Deep breathing group:Deep Breathing
Spontaneous quiet breathing group:Spontaneous quiet breathing

Sponsors

LONGYAN FIRST HOSPITAL
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: 1. American Society of Anesthesiologists (ASA) Physical Status Classification Class I or II; 2. Aged 18 to 65 years inclusive; 3. Body Mass Index (BMI) < 28 kg/m^2; 4. No history of thoracic surgery or pulmonary diseases; 5. Preoperative chest computed tomography (CT) showed no obvious abnormalities; 6. No anticipated difficult airway.

Exclusion criteria

Exclusion criteria: 1.Persons with severe chronic cardiac, hepatic or renal diseases; 2.History of chronic respiratory diseases such as COPD or asthma, and recent respiratory tract infection; 3.The preoperative Visual Analogue Scale (VAS) score is greater than 2 points; 4.Individuals with allergy to components of general anesthetics; 5.Refusal to provide signed informed consent;

Design outcomes

Primary

MeasureTime frame
Lung Ultrasound Score;

Secondary

MeasureTime frame
Postoperative Pulmonary Complications;Duration of Non-Hypoxic Apnoea;Arterial Blood Gas Analysis;Hemodynamic parameters;VAS score;

Countries

China

Contacts

Public ContactTing Qiu

LONGYAN FIRST HOSPITAL

1597529962@qq.com+86 597 376 4384

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Aug 10, 2026