Influences of general anesthesia and lung volume change on upper airway configuration: impact of obesity and obstructive sleep apnea

Influences of general anesthesia and lung volume change on upper airway configuration: impact of obesity and obstructive sleep apnea - Influences of muscle paralysis and lung volume on hyoid bone position

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000019578

Enrollment

Registered

2015-10-30

Start date

2015-11-09

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Adult Patients undergoing general anesthesia

Interventions

head and neck radiography and lung volume increase

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: 1. General anesthesia is scheduled for the surgery. 2. Adult male who is older than or equal to 40 years old and younger than or equal to 70 years old.

Exclusion criteria

Exclusion criteria: 1. Patients American Society of Anesthesiologists Physical Status greater than 3 2. Patients with upper airway abnormalities. 3. Patients with severe COPD. 4. Patients with uncontrolled asthma. 5. Patients with aonea hypopnea index between 10 and 15

Design outcomes

Primary

Measure	Time frame
hyoid bone position	—

Secondary

Measure	Time frame
craniofacial dimensions, patient characteristics, severity of obstructive sleep apnea, obesity	—

Countries

Japan

Contacts

Public ContactShiroh Isono

Graduate School of Medicine, Chiba University Department of Anesthesiology

shirohisono@yahoo.co.jp+81432262155

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026