Document Detail

Sternomental distance as the sole predictor of difficult laryngoscopy in obstetric anaesthesia.
MedLine Citation:
PMID:  8949801     Owner:  NLM     Status:  MEDLINE    
Sternomental distance and view at laryngoscopy were documented in 523 parturients undergoing elective or emergency Caesarean section under general anaesthesia. Eighteen (3.5%) had a grade III or IV laryngoscopic view (Cormack and Lehane's classification) and were classified as potentially difficult tracheal intubations. There was a significant difference between sternomental distance in those patients with a grade III or IV laryngoscopic view compared with those with a grade I or II (13.17 (SD 1.54) cm vs 14.3 (1.49) cm; P = 0.0013). A sternomental distance of 13.5 cm or less with the head fully extended on the neck and the mouth closed provided, using discriminant analysis, the best cut-off point for predicting subsequent difficult laryngoscopy. A sternomental distance of 13.5 cm or less had a sensitivity, specificity, positive and negative predictive values of 66.7%, 71.1%, 7.6% and 98.4%, respectively. While there was no association between sternomental distance and age, weight, height or body mass index (BMI), there was a significant association between grade of laryngoscopy (III and IV) and older (P = 0.049) and heavier (P = 0.0495) mothers. The results suggest that while sternomental distance on its own may not be an adequate sole predictor of subsequent difficult laryngoscopy the measurement should be incorporated into a series of quick and simple preoperative tests.
S Al Ramadhani; L A Mohamed; D A Rocke; E Gouws; S A Ramadhani
Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  British journal of anaesthesia     Volume:  77     ISSN:  0007-0912     ISO Abbreviation:  Br J Anaesth     Publication Date:  1996 Sep 
Date Detail:
Created Date:  1997-01-07     Completed Date:  1997-01-07     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0372541     Medline TA:  Br J Anaesth     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  312-6     Citation Subset:  IM    
Department of Anaesthesia, Al Corniche Hospital, Abu Dhabi, United Arab Emirates.
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MeSH Terms
Anesthesia, General*
Anesthesia, Obstetrical*
Cesarean Section
Chin / anatomy & histology*
Intubation, Intratracheal
Middle Aged
Predictive Value of Tests
Risk Factors
Sensitivity and Specificity
Sternum / anatomy & histology*
Comment In:
Br J Anaesth. 1997 Mar;78(3):338   [PMID:  9135322 ]
Br J Anaesth. 1997 May;78(5):626-7   [PMID:  9175985 ]
Br J Anaesth. 1996 Sep;77(3):309-11   [PMID:  8949800 ]
Erratum In:
Br J Anaesth 1996 Nov;77(5):701
Note: Ramadhani SA [corrected to Al Ramadhani S]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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