An observational study in Airway Management and Predictive Value of Tests, sponsored by Medical University of Silesia. Completed at 1 site in Poland. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2017-01-31.
Sponsored by Medical University of Silesia · Observational
The purpose of this study is to assess the usefulness of the Thyromental Height Test in prediction of difficult intubation using double lumen endotracheal tubes in patients scheduled for elective thoracic procedures.
Proper prediction of the occurrence of difficult intubation plays a crucial role in anaesthesiology. For years attempts have been made to develop methods allowing anaesthesiologists to correctly predict the occurrence of difficult intubation. None of the currently used tests and anthropometric measurements present satisfying predictive value. Recent studies show promise in Thyromental Height Test (TMHT), which base on the height between the anterior borders of the mentum and the thyroid cartilage, measured while the patient lies in the supine position with closed mouth, as a single, non-invasive predictor of difficult intubation. Use of double lumen endotracheal tubes during thoracic procedures, due to greater diameter of the tube, may lead to higher occurrence of difficult intubation. That is why, the purpose of this study is to assess the usefulness of the TMHT in prediction of difficult intubation using double lumen endotracheal tubes in patients scheduled for elective thoracic procedures and relate it to other, commonly used predictive tests.
During routine, preoperative anaesthetic visit thyromental height, thyromental distance, sternomental distance and Mallampati scale score are assessed. Then, during direct laryngoscopy and intubation, score in Cormack-Lehane scale and occurrence of difficult intubation are noted.
Medical University of Silesia is the lead sponsor of 111 studies on the registry; 24 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Consecutive patients undergoing elective thoracic procedures in university hospital, requiring general anaesthesia, elective direct laryngoscopy and intubation with a double lumen endotracheal tubes.
Exclusion Criteria:
Thyromental height
The height between the anterior border of the thyroid cartilage (on the thyroid notch just between the 2 thyroid laminae) and the anterior border of the mentum (on the mental protuberance of the mandible), in supine position with mouth closed, measured with a depth gauge, measured during routine preoperative anaesthetic visit.
Time frame: immediate
Thyromental distance
The distance between the thyroid prominence and the most anterior part of the mental prominence of the mandible, measured with a standard centigrade ruler as the distance in centimetres with the patient in supine position, head fully extended, mouth closed, during routine preoperative anaesthetic visit.
Time frame: immediate
Sternomental distance
The distance in centimetres between the superior border of the manubrium sterni and the bony point of the mentum, with the patient in supine position, head fully extended, mouth closed, measured with a standard centigrade ruler, during routine preoperative anaesthetic visit.
Time frame: immediate
score in modified Mallampati test
The oropharyngeal view is assessed in sitting position, mouth maximally opened, tongue protruded, without phonation, measured during routine preoperative anaesthetic visit.
Time frame: immediate
score in Cormack-Lehane scale
During direct laryngoscopy the patient is graded in Cormack-Lehane Scale by the laryngoscopist.
Time frame: immediate
Plan to share: No
This study is completed, as verified in Jan 2017. You cannot join it, but the record below documents what was studied.
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Medical University of Silesia