The Ideal Length of the Nasotracheal Tube Considering Nasotracheal Tube Size

Completed

• Conditions: Nasotracheal Intubation for General Anesthesia

• Registration Number: NCT03282604
• Lead Sponsor: Yonsei University

Brief Summary

The nasotracheal intubation is preferred for oral surgery; it provides an easier view of the surgical field. However, nasotracheal tubes are produced by foreign countries. Tubes are often not fitted in anatomy of Korean people because of small nostril. When the size of the tube is chosen by nostril size, the length of nasotracheal tube is not appropriate to the glottis. The aim of this study is to evaluate the appropriateness of the tube depth and to suggest the ideal length of the nasotracheal tube during the intubation of the selected tracheal tube in consideration of the size of the nasal cavity in Koreans. 146 patients (73 males and 73 females) who are scheduled for nasal intubation for general anesthesia will be enrolled. The primary outcome is the ideal length of tube that allows the distance from the vocal cords to the proximal portion of the tube cuff to be greater than 2 cm and the tip of the intubated tube to be located 5 ± 2 cm above the tracheal carina. The size of nostril, length from the nare to the carina and vocal cord are measured.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2017-09-11
• Study First Submitted QC: 2017-09-12
• Study First Posted: 2017-09-14
• Study Start: 2017-09-25
• Primary Completion: 2018-12-06
• Study Completion: 2018-12-06
• Status Verified: 2019-02
• Last Update Submitted: 2019-02-10
• Last Update Posted: 2019-02-12

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 146

Inclusion Criteria

1. Patients who are scheduled for nasotracheal intubation for general anesthesia

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Exclusion Criteria

1. age<20 years
2. ASA class III or more
3. pregnancy
4. emergency surgery
5. nasal airway disease
6. expected difficult intubation (difficult intubation history, Modified Mallampati score 4, mouth opening <2cm, facial anomaly)
7. cervical movement disorder (cervical disease, cervical pain)

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
the ideal length of the nasotracheal tube during the intubation of the selected tracheal tube in consideration of the size of the nasal cavity in Koreans	through study completion, an average of 1 year	the ideal length of tube that allows the distance from the vocal cords to the proximal portion of the tube cuff to be greater than 2 cm and the tip of the intubated tube to be located 5 ± 2 cm above the tracheal carina.

Trial Locations

Locations (1)

Department of Anesthesiology and Pain Medicine, Severance; 🇰🇷 Seoul, Korea, Republic of