The Ideal Length of the Nasotracheal Tube Considering Nasotracheal Tube Size

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT03282604

Enrollment

146

Registered

2017-09-14

Start date

2017-09-25

Completion date

2018-12-06

Last updated

2019-02-12

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

Conditions

Nasotracheal Intubation for General Anesthesia

Keywords

Intubation, Intratracheal, Nasopharynx

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.

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

20 Years to 70 Years

Healthy volunteers

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)

Design outcomes

Primary

Measure	Time frame	Description
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.

Countries

South Korea

Outcome results