Comparing two different airway assessment parameters as a predictor of difficulty in visvalising vocal cords while stabilising the neck in neutral position during anaesthesia in adult patients

Comparison of neck circumference to interincisor gap ratio with thyromental height test as a predictor of difficult laryngoscopy with manual-in line stabilisation maneuver during endotracheal intubation in adult patients - Nil

Status

Active, not recruiting

Phases

Phase 2Phase 3

Study type

Interventional

Source

CTRI

Registry ID

CTRI/2024/05/067394

Enrollment

155

Registered

2024-05-15

Start date

Unknown

Completion date

Unknown

Last updated

2024-05-27

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

Conditions

Health Condition 1: O- Medical and Surgical

Interventions

Intervention1: Neck circumference,interincisor gap: Neck circumference will be measured using soft measuring tape and interincisor gap will be measured using vernier calliper before induction (0 hour)

Eligibility

Inclusion criteria

Inclusion criteria: Consenting adult patients scheduled for elective surgeries under general anesthesia with no restriction of cervical spine movement.

Exclusion criteria

Exclusion criteria: Following patients are excluded from the study- 1) Anatomical abnormality of neck , mandible 2)Upper airway abnormality (maxillofacial tumor, trauma, carcinoma tongue) 3) Mouth opening less than 1.5 cm 4) Patient with cervical spinal abnormalities 5) Patient with cervical spine trauma

Design outcomes

Primary

Measure	Time frame
Comparison of Sensitivity of Neck circumference to Interincisor gap ratio (NC/IIG ratio) with thyromental height test (TMHT) as a predictor of difficult laryngoscopy with MILS during intubation in adult patients posted for surgery under general anesthesia.Timepoint: After data collection from all participants of study	—

Secondary

Measure	Time frame
1. Comparision of NC/IIG ratio with TMHT as a predictor of difficult laryngoscopy with MILS maneuver during intubation with respect to following: Specificity, Positive Predictive Value(PPV), Negative Predictive Value(NPV). 2. Sensitivity and specificity of Mallampati classification as a predictor of difficult laryngoscopy during MILS maneuver. 3. Comparison of Sensitivity and specificity of NC/IIG ratio with TMHT as a predictor of difficult intubation. 4. Sensitivity and specificity of Mallampati classification as a predictor of difficult intubation.Timepoint: After data collection from all participants of study	—

Measure

Time frame

1. Comparision of NC/IIG ratio with TMHT as a predictor of difficult laryngoscopy with MILS maneuver during intubation with respect to following: Specificity, Positive Predictive Value(PPV), Negative Predictive Value(NPV). 2. Sensitivity and specificity of Mallampati classification as a predictor of difficult laryngoscopy during MILS maneuver. 3. Comparison of Sensitivity and specificity of NC/IIG ratio with TMHT as a predictor of difficult intubation. 4. Sensitivity and specificity of Mallampati classification as a predictor of difficult intubation.Timepoint: After data collection from all participants of study

—

Countries

India

Contacts

Public ContactDr Priya

UCMS and GTB Hospital,Delhi

rudoc@rediffmail.com9560678023

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026