scholarly journals Evaluation of Ultrasound Guided Measurement of Anterior Neck Soft Tissue Thickness in Predicting Difficult Laryngoscopy in Obese Patients

2021 ◽  
Author(s):  
Saumya Jain ◽  
Nisha Kachru ◽  
Rupesh Yadav
Keyword(s):  
Soft Tissue ◽  
Difficult Airway ◽  
Anterior Commissure ◽  
Neck Circumference ◽  
Difficult Laryngoscopy ◽  
Morbidly Obese ◽  
Obese Patients ◽  
Tissue Thickness ◽  
Anterior Neck ◽  
Soft Tissue Thickness

Background: The incidence of unanticipated difficult airway is 14.3-17.5% in obese. Preoperative difficult airway prediction is important to avoid postoperative morbidity and mortality. USG guided measurement of anterior neck soft tissue thickness can be used to predict difficult laryngoscopy in obese patients and we thus undertook this study to determine the role of USG guided measurement of anterior neck thickness at the level of vocal cords in difficult laryngoscopy prediction. Methods: Sixty obese patients (BMI≥30kg/m2), 18-70 years of age of either sex, were included. Anterior neck soft tissue thickness was measured by ultrasound as the distance from the skin to the anterior commissure of vocal cord. Neck circumference was measured at mid neck just below the laryngeal prominence with the subjects standing upright and facing forward with shoulders relaxed. Thyromental distance, sternomental distance, Mallampatti score and neck circumference were also recorded. Results: The cut off values of BMI (46.94 kg/m2), neck circumference (41.5 cm) and anterior neck soft tissue thickness (22.1mm). Four patients in the morbidly obese and 80% of the superobese patients had a difficult laryngoscopy. Sixteen (26.67%) patients had an anterior neck soft tissue thickness of >22.1mm. Of these, 11 (91.67%) patients had difficult laryngoscopy while one (8.33%) patient with anterior neck soft tissue thickness ≤ 22.1mm had difficult laryngoscopy (P<0.05). There was also significant association between neck circumference and BMI. Conclusion: The USG guided measurement of anterior neck soft tissue thickness, BMI and neck circumference can reliably predict difficult laryngoscopy in obese patients.

Ultrasound quantification of anterior soft tissue thickness fails to predict difficult laryngoscopy in obese patients

2005 ◽  
Vol 22 (Supplement 34) ◽  
pp. 72-73
Author(s):  
A. Wadhwa ◽  
R. Komatsu ◽  
P. Sengupta ◽  
O. Akca ◽  
D. Sessler ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Difficult Laryngoscopy ◽  
Obese Patients ◽  
Tissue Thickness ◽  
Soft Tissue Thickness

Anterior Neck Soft Tissue Ultrasonography for Prediction of Difficult Laryngoscopy in Morbidly Obese Patients

2002 ◽  
Vol 96 (Sup 2) ◽  
pp. A1324
Author(s):  
Peter Szmuk ◽  
Sergio Susmallian ◽  
Gabriella Gewurtz ◽  
Ilan Charuzi ◽  
Tiberiu Ezri
Keyword(s):  
Soft Tissue ◽  
Difficult Laryngoscopy ◽  
Morbidly Obese ◽  
Obese Patients ◽  
Anterior Neck

scholarly journals Ultrasound Quantification of Anterior Soft Tissue Thickness Fails to Predict Difficult Laryngoscopy in Obese Patients

2007 ◽  
Vol 35 (1) ◽  
pp. 32-37 ◽  
Author(s):  
R. Komatsu ◽  
P. Sengupta ◽  
A. Wadhwa ◽  
O. Akça ◽  
D. I. Sessler ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Difficult Laryngoscopy ◽  
Obese Patients ◽  
Tissue Thickness ◽  
Soft Tissue Thickness

scholarly journals Anterior neck soft tissue thickness for airway evaluation measured by MRI in patients with cervical spondylosis: prospective cohort study

BMJ Open ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. e029987 ◽  
Author(s):  
Yongzheng Han ◽  
Jingchao Fang ◽  
Hua Zhang ◽  
Mao Xu ◽  
Xiangyang Guo
Keyword(s):  
Body Weight ◽  
Cohort Study ◽  
Soft Tissue ◽  
Prospective Cohort ◽  
Cervical Spondylosis ◽  
Difficult Laryngoscopy ◽  
Tissue Thickness ◽  
Anterior Neck ◽  
Vocal Cords ◽  
Soft Tissue Thickness

ObjectivesAnterior neck soft tissue thickness, usually measured by ultrasound, is increasingly being investigated to predict difficult laryngoscopy, but the results have not been validated. Considering the conflicting measurement data, different measuring body positions and lack of a standard ultrasound procedure, we used MRI to verify the efficacy of these popular ultrasonographic parameters.DesignProspective cohort study.SettingA tertiary hospital in Beijing, China.MethodsWe enrolled 315 adult patients who underwent cervical spinal surgery in Peking University Third Hospital from April to October 2016. We analysed MRI data to predict difficult laryngoscopy. Cormack–Lehane scales were assessed during intubation, and patients with a class III or IV view were assigned to the difficult laryngoscopy group.ResultsUnivariate analysis showed that male sex (p<0.01), older age (p=0.03) and body weight (p=0.02) were associated with difficult laryngoscopy. MRI data consisted of five common ultrasonographic variables used to predict difficult laryngoscopy, but none was a valuable predictor: skin to hyoid (p=0.18), skin to midpoint of epiglottis (p=0.72), skin to thyroid cartilage at the level of the vocal cords (p=0.10), skin to vocal cords (p=0.44) or skin to anterior to the trachea at the level of suprasternal notch (p=0.92). Adjusted by sex, age and body weight, none of the five MRI indicators had predictive value (p>0.05).ConclusionThe five most commonly studied ultrasonographic indicators of anterior soft tissue thickness appeared unreliable to predict difficult laryngoscopy in patients with cervical spondylosis. Further study is needed to validate the most valuable indicator to predict difficult laryngoscopy.Trial registration numberChiCTRROC-16008598; Pre-results.

scholarly journals Accuracy of acetabular cup implantation, as a function of body mass index and soft-tissue thickness, with a mechanical intraoperative support device: A retrospective observational study

2020 ◽  
Author(s):  
Hayato Suzuki ◽  
Norio Imai ◽  
Yuki Hirano ◽  
Naoto Endo
Keyword(s):  
Computed Tomography ◽  
Soft Tissue ◽  
Pubic Symphysis ◽  
Alignment Accuracy ◽  
Alignment Error ◽  
Obese Patients ◽  
Tissue Thickness ◽  
Absolute Value ◽  
Soft Tissue Thickness ◽  
Support Device

Abstract Background HipCOMPASS, a mechanical intraoperative support device used in total hip arthroplasty (THA), improves the cup-alignment accuracy. However, alignment accuracy in obese patients has not been examined. We aimed to compare the cup-alignment accuracy, using HipCOMPASS, between patients with and without obesity. Methods We retrospectively evaluated 448 consecutive patients who underwent primary THA using HipCOMPASS. We measured the soft-tissue thickness of the anterior-superior iliac spine (ASIS) and pubic symphysis using preoperative computed tomography (CT) images and the difference in cup angle pre- and postoperatively based on the cup-alignment error on CT. We used Pearson coefficients to determine the correlation of body mass index (BMI) and soft-tissue thickness with cup-alignment error. We created receiver operating characteristic (ROC) curves to determine the cutoff value for statistically significant cup-alignment error factors in radiographic inclination and anteversion of ≥ 5°. Results There were significant correlations between the absolute value of radiographic anteversion difference and BMI (r = 0.205), ASIS thickness (r = 0.419), and pubic symphysis thickness (r = 0.434). The absolute value of radiographic inclination difference was significantly correlated with ASIS (r = 0.257) and pubic symphysis thickness (r = 0.202). The ROC curve showed a pubic symphysis thickness of 37.2 mm for a ≥ 5° implantation error in both radiographic inclination and anteversion simultaneously. The cup-alignment error for HipCOMPASS was large in patients whose pubic symphysis thickness was ≥ 37.2 mm on preoperative CT. Conclusion We recommend using methods other than HipCOMPASS, including computed tomography-based navigation systems, in obese patients.

Correlation of Neck Circumference with Difficult Mask Ventilation and Difficult Laryngoscopy in Morbidly Obese Patients: an Observational Study

2018 ◽  
Vol 28 (9) ◽  
pp. 2860-2867 ◽  
Author(s):  
Aylin Özdilek ◽  
Cigdem Akyol Beyoglu ◽  
Şafak Emre Erbabacan ◽  
Birsel Ekici ◽  
Fatiş Altındaş ◽  
...  
Keyword(s):  
Observational Study ◽  
Neck Circumference ◽  
Difficult Laryngoscopy ◽  
Morbidly Obese ◽  
Obese Patients ◽  
Mask Ventilation ◽  
Difficult Mask Ventilation
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