To compare diameter below voice box using ultrasound and age related formula for determining the size of paediatric endotracheal tube for children undergoing general anaesthesia

Comparison of ultrasound guided measurement of subglottic diameter v/s age related formula for determining the size of paediatric endotracheal tube for children undergoing general anaesthesia: a comparative study - NIL

Status

Active, not recruiting

Phases

Phase 4

Study type

Interventional

Source

CTRI

Registry ID

CTRI/2026/07/114093

Enrollment

Registered

2026-07-15

Start date

Unknown

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Health Condition 1: 4- Measurement and Monitoring

Interventions

Intervention1: Ultrasound guided measurement of subglottic diameter: Subglottic diameter was estimated with ultrasonography for Endotracheal tube size determination. Control Intervention1: ultrasound

Eligibility

Inclusion criteria

Inclusion criteria: 1.Children aged 2 to 8 years 2.ASA I or II 3.Normal airway anatomy 4.Informed written consent

Exclusion criteria

Exclusion criteria: 1. Congenital airway abnormalities 2.Difficult mask ventilation and difficult intubation. 3.Children with craniofacial anomalies. 4.Emergency or rapid sequence intubation cases. 5.Previous tracheal surgery or complications. 6.Refusal of consent

Design outcomes

Primary

Measure	Time frame
Comparison of Ultrasound guided subglottic diameter measurement and age based formula in accurately predicting ETT size in paediatric patients undergoing General Anaesthesia.Timepoint: Post-intubation response at 0, 5, 10 mins	—

Secondary

Measure	Time frame
1. Success rate of first-attempt intubation using ETT 2. Any ETT size adjustment or tube exchange 3. Difference in post-intubation complications 4. Patient factorsTimepoint: Post-intubation response at 0, 5, 10 mins	—

Countries

India

Contacts

Public ContactDr. Diptimayee Mallik

Institute of Medical Sciences and SUM hospita

dr.diptimayee2010@gmail.com9861159151

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Aug 10, 2026