Volume : VIII, Issue : VI, June - 2018

Predictive value of Neck Circumference to Thyromental distance ratio in predicting difficult intubation in Obese and Non obese patients

Dr. M. Vellingiri, Dr. M. Bhavani

Abstract :

 AIM OF THE STUDY :To test the predictive value of Neck Circumference to Thyromental Distance ratio in predicting

difficult intubation in Obese and Non obese patients.
MATERIALS: This is a Prospective, Observational study conducted in Rajiv Gandhi Government general hospital after getting approval from the
Institutional Ethics Committee, l200 patients in the age group of 18 to 60 years were selected for this study. Only those satisfying the inclusion criteria
were included in this study after getting their consent.
METHODS :Incidence of difficult endo tracheal intubation in 50 obese(BMI–27.5Kg/m2, according to Asian obesity criteria by WHO expert
consultation) and 150 non obese was compared. Difficult intubation was determined using the Intubation Difficulty Scale (IDS>–5).The Neck
circumference to Thyromental distance ratio was calculated for every case and its ability to predict difficult tracheal intubation was analyzed.
SUMMARY :This study was conducted in Institute of Anaesthesiology and Critical Care, Government Madras Medical College, Chennai. 150 non
obese and 50 obese patients were selected and preairway assessment made with measurements– Inter Incisor Sternomental distance, Thyromental
distance, Neck circumference and ratio. neck circumference to thyromental Distance Temporomandibular joint mobility was assessed with Upper
Lip BiteTest. Statistical analysis showed that neck circumference to thyromental distance ratio – is the most sensitive parameter for identifying
difficult intubation than IID, TMD, sMD, NC and ULFT inboth obese and non obese patients. This ratio can be used in combination with other simple
bedside tests to identify difficult intubations. This ratio has a very low false negative prediction, making a false sense of security unlikely.
CONCLUSION :distance is a use Non obese patients, as this ratio has very and highly sensitive in identifying difficult intubation in both the
concluded the ratio of neck circumference to Thyromental is a useful predictor of difficult intubation in both Obese and low false negative prediction
pgroups.

Keywords :

Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Dr.M. Vellingiri, Dr.M. Bhavani, Predictive value of Neck Circumference to Thyromental distance ratio in predicting difficult intubation in Obese and Non obese patients, INDIAN JOURNAL OF APPLIED RESEARCH : Volume-8 | Issue-6 | June-2018


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