A prospective observational study: the effects of inhalational anesthetic and tracheal tube on airway resistance during general anesthesia

A prospective observational study: the effects of anesthetic gas composition and tracheal tube length on airway resistance during general anesthesia - A prospective observational study: the effects of anesthetic gas composition and tracheal tube length on airway resistance during general anesthesia

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000042544

Enrollment

Registered

2020-11-25

Start date

2020-11-25

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

non

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: (1) Patients undergoing general anesthesia (2) Patients intubated with a cuffed tracheal tube (3) Patients managed with pressure-controlled ventilation

Exclusion criteria

Exclusion criteria: (1) Patients with respiratory diseases (2) Patients with difficulty in tracheal intubation (3) Patients whose surgical procedure affects ventilatory parameters (4) Patients with risk factors for malignant hyperthermia due to inhalation anesthetic

Design outcomes

Primary

Measure	Time frame
Changes in tidal volume due to changes in anesthetic gas composition or tracheal tube length	—

Secondary

Measure	Time frame
ventilatory information (ventilator settings, airway pressure, flow velocity, resistance, anesthetic gas composition, tracheal tube length), biometric information (heart rate, blood pressure, oxygen saturation, end-tidal carbon dioxide tension)	—

Countries

Japan

Contacts

Public Contactkazuhiro takahashi

Tohoku University School of Medicine Anesthesiology and Perioperative Medicine

takahashi.kazuhiro@med.tohoku.ac.jp022-717-7321

Outcome results