This study aims to apply the various morphological and radiological parameters of neck in predicting difficulty in direct laryngoscopy procedure for glottic and sub glottic pathology. 

This study will be conducted at a teritiary care hospital in Karnataka institute of medical sciences, Hubballi, Karnataka, in the patients attending ENT department.

This is hospital based  observational study with total sample size of 72.

Patients belonging to all age groups with benign or malignant lesions of glottic and sub glottic region will be included in the study.

Patients with known difficult airway due to trauma and congenital abnormalities and critical ill patients and patients not giving consent for procedures are excluded.

Aim and objectives of this study includes:

1. To analyse morphological parameters of neck and correlate their relation with difficulty score in the direct laryngoscopy procedure in the glottic and sub glottic pathology.
2. To analyse radiological parameters of neck and correlate their relation with difficulty score in the direct laryngoscopy procedure in the glottic and sub glottic pathology.
3. To predict the difficulty in direct laryngoscopy procedure based on the above data.

Methodology includes all patients satisfying inclusion criteria selected and informed consent taken.

Morphological and radiological parameters are measured, during preoperative evaluation.

Difficult laryngoscopy score is done, while doing direct laryngoscopy.

Data collected is entered into data sheet and analysed using s

SPSS IBM 22 version.

For qualitative data, test of significance chi square test is applied.

For quantitative data, t test will be used and if p value is less than 0.05 is considered to be significant.

Further results are concluded.