The Ideal Length of the Nasotracheal Tube Considering Nasotracheal Tube Size

Nasotracheal Intubation for General Anesthesia Clinical Trial

Official title:

The Ideal Length of the Nasotracheal Tube Considering Nasotracheal Tube Size

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03282604
• Other study ID #: 1-2017-0048
• Status: Completed
• Start date: September 25, 2017
• Est. completion date: December 6, 2018

Study information

• Verified date: February 2019
• Source: Yonsei University
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial 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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 146
• Est. completion date: December 6, 2018
• Est. primary completion date: December 6, 2018
• Accepts healthy volunteers: No
• Gender: All
• Age group: 20 Years to 70 Years

Eligibility

Inclusion Criteria:

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

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)

Related Conditions & MeSH terms

• Nasotracheal Intubation for General Anesthesia

Locations

Country	Name	City	State
Korea, Republic of	Department of Anesthesiology and Pain Medicine, Severance	Seoul

Sponsors (1)

Lead Sponsor	Collaborator
Yonsei University

Country where clinical trial is conducted

Korea, Republic of, 

References & Publications (3)

Han DW, Shim YH, Shin CS, Lee YW, Lee JS, Ahn SW. Estimation of the length of the nares-vocal cord. Anesth Analg. 2005 May;100(5):1533-5, table of contents. — View Citation

Reed DB, Clinton JE. Proper depth of placement of nasotracheal tubes in adults prior to radiographic confirmation. Acad Emerg Med. 1997 Dec;4(12):1111-4. — View Citation

Stoneham MD. The nasopharyngeal airway. Assessment of position by fibreoptic laryngoscopy. Anaesthesia. 1993 Jul;48(7):575-80. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	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	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.	through study completion, an average of 1 year