Examination of the intubation tube depth in the general anesthesia in the maxillofacial gery

Examination of the intubation tube depth in the general anesthesia in the maxillofacial gery - Examination of the intubation tube depth

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000011375

Enrollment

Registered

2013-08-05

Start date

2012-04-01

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

patients for general anesthesia

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: General anesthesia patient

Exclusion criteria

Exclusion criteria: Patients with pulmonary diseases, such as bronchial asthma, abnormal breath sounds, and malformations of the trachea, bronchus and lungs on chest radiographs

Design outcomes

Primary

Measure	Time frame
Under laryngoscopy, when it was confirmed that the pre-existing marker on the tube had reached the glottis, a mark was made on the tube at the nares. This length was measured as insertion depth using the marker as an index. Next, for insertion depths determined by the CC method, the following measurement was performed. When it was confirmed that the cuff of the tube had passed through the glottis, another measurement was made on the tube at the level of the nares. After the tube was inserted such that 20 mm of the tube above the cuff had passed through the glottis, the cuff of the tube was inflated (cuff pressure 20 cm H2O). The patient's head was placed in the neutral position, following which the tube was further advanced while auscultating bilateral breath sounds with a stethoscope placed on the midaxillary line at the level of the fourth intercostal space, during manual compression of the reservoir bag (airway pressure 15 - 20 cm H2O, tidal volume 400 - 450 mL). When breath sounds from the left side of the chest changed in quality (becoming rough, bubbling, wheezing or bronchial), a mark was made on the tube at the nares. When breath sounds from the left side of the chest disappeared, the tube was withdrawn to the previous position where the change in breath sounds had occurred, and a mark was made on the tube at the nares. At this time, breath sounds from the right side of the chest were examined, and absence of change in the sounds as the tube passed into the left bronchus was confirmed. If there was a sufficient distance between the carina (the point of breath sound change) and glottis, the tube was inserted with the cuff 3.5 cm distal to the glottis, yet proximal to the carina, at which position it was fixed, and a mark was made on the tube at the level of the nares. This length was measured as insertion depth using the CC method.	—

Measure

Time frame

Under laryngoscopy, when it was confirmed that the pre-existing marker on the tube had reached the glottis, a mark was made on the tube at the nares. This length was measured as insertion depth using the marker as an index. Next, for insertion depths determined by the CC method, the following measurement was performed. When it was confirmed that the cuff of the tube had passed through the glottis, another measurement was made on the tube at the level of the nares. After the tube was inserted such that 20 mm of the tube above the cuff had passed through the glottis, the cuff of the tube was inflated (cuff pressure 20 cm H2O). The patient's head was placed in the neutral position, following which the tube was further advanced while auscultating bilateral breath sounds with a stethoscope placed on the midaxillary line at the level of the fourth intercostal space, during manual compression of the reservoir bag (airway pressure 15 - 20 cm H2O, tidal volume 400 - 450 mL). When breath sounds from the left side of the chest changed in quality (becoming rough, bubbling, wheezing or bronchial), a mark was made on the tube at the nares. When breath sounds from the left side of the chest disappeared, the tube was withdrawn to the previous position where the change in breath sounds had occurred, and a mark was made on the tube at the nares. At this time, breath sounds from the right side of the chest were examined, and absence of change in the sounds as the tube passed into the left bronchus was confirmed. If there was a sufficient distance between the carina (the point of breath sound change) and glottis, the tube was inserted with the cuff 3.5 cm distal to the glottis, yet proximal to the carina, at which position it was fixed, and a mark was made on the tube at the level of the nares. This length was measured as insertion depth using the CC method.

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Countries

Japan

Outcome results