Stylet Bend Angles and Tracheal Tube Passage Using a Straight-to-cuff Shape

Levitan, Richard M.; Pisaturo, James T.; Kinkle, William C.; Butler, Kenneth H.; Everett, Worth W.

doi:10.1197/j.aem.2006.06.058

Cited by 41 publications

(23 citation statements)

References 5 publications

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“…A ‘naked’ ETT describes passing an ETT into the trachea without any other adjuncts. The ‘stylet ETT’ uses a semi‐rigid stylet inside the ETT to increase rigidity and alter the shape of the ETT during tube passage . A bougie (also termed a tracheal tube introducer) is a long, thin device with a coude tip, and can be used in two broad fashions.…”

Section: Introductionmentioning

confidence: 99%

Comparison of four methods of endotracheal tube passage in simulated airways: There is room for improved techniques

Kingma

Hofmeyr

Zeng

et al. 2017

Emerg Medicine Australasia

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Section: Introductionmentioning

confidence: 99%

Comparison of four methods of endotracheal tube passage in simulated airways: There is room for improved techniques

Kingma

Hofmeyr

Zeng

et al. 2017

Emerg Medicine Australasia

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“…In addition, the diameter of the double lumen tube is smaller in the single lung ventilation resistance, easy to lead to inadequate ventilation; it is not For some cases, the ideal double lumen tube size should have a larger diameter, it is just fit the bronchial tube bronchial, when the bronchial tube is not inflated only a little leak. In the past, the use of the double lumen tube generally depends on the experience and preferences of the anesthesia doctor, lack of scientific basis [13][14][15]. Direct measurement of the diameter of the trachea by this study can provide a useful guide for selecting a double lumen catheter for each physician.…”

Section: Discussionmentioning

confidence: 97%

Prediction of the Size of Double Lumen Endotracheal Intubation by Measuring the Diameter of the Trachea

Zhang¹,

Zhou²,

Cong³

et al. 2016

Anat Physiol

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Objective: To find the faster and easier way than the existing intubating technique for double-lumen tube. We prediction of required double lumen tube size by measure the X-ray trachea diameter size before surgery. Methods: Randomly selected 100 cases of single lung ventilation in patients undergoing thoracic surgery. Measurement of tracheal diameter at the level of clavicle in X-ray. Choose the double-lumen size according to the measurement of tracheal diameter in X-ray. If the tracheal diameter greater than 16 mm, choose a 39 Fr double lumen tube, if the trachea diameter between 15-16 mm, used 37 Fr double lumen tube, with less than 15 mm, used 35 Fr double lumen tube. Record the number of intubation and whether there is difficulty for double lumen tube through the glottis. Results: All patients' double lumen were selected according for the measurement of the diameter of the trachea, all successful intubation and accurate localization of bronchus. Conclusion: There was no significant difference in the diameter of trachea with age, body weight and height, and the diameter of the female trachea was significantly narrower than that of the male. For vast majority of male Chinese, 39 Fr double lumen tube is suitable, and the height and weight is of small relation, female patients with large differences in the airway diameter, height, weight, gender cannot be the basis for the choice of double lumen tube.

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“…Extraction forces > 10.3 N, a previously reported cut‐off value for post‐intubation throat pain , were observed when using hockey stick‐shaped stylets with a bending angle of 45° or greater. Another study showed that passage into the trachea is difficult or impossible when using a stylet with a bending angle greater than 35° . Stylets with large bending angles tend to cause the tube tip to impinge on the anterior wall of the trachea, preventing smooth insertion .…”

Section: Discussionmentioning

confidence: 99%

Removal methods of rigid stylets to minimise adverse force and tracheal tube movement: a mathematical and in‐vitro analysis in manikins

et al. 2019

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Summary This study investigated displacement of the tracheal tube caused by different methods of intubating stylet removal, using in‐vitro experiments and mathematical analysis. In the first in‐vitro experiment, we measured the distance travelled by the tube tip during stylet extraction. Then, we investigated the ideal technique for stylet extraction using mathematical analysis, which would cause minimal tube displacement. Then, using a training manikin, we measured the force applied to the vocal cords and stylet extraction force during tracheal intubation. When the stylet was extracted along a straight path towards the stylet end, the distance travelled by the tube tip significantly increased as the bending angle increased. Mathematical analysis revealed that the stylet should be diagonally extracted (in the sagittal plane) at an appropriate angle, rather than along a straight path towards the direction of the stylet end. In simulated tracheal intubation, extraction force and force applied to the vocal cords both significantly increased as the bending angle increased. Compared with the ‘hockey stick’‐shaped stylet, the arcuate‐shaped stylet resulted in reduced force. Our results indicate the potential risk for vocal cord injury when using hockey stick‐shaped stylets with large bending angles.

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Stylet Bend Angles and Tracheal Tube Passage Using a Straight-to-cuff Shape

Cited by 41 publications

References 5 publications

Comparison of four methods of endotracheal tube passage in simulated airways: There is room for improved techniques

Comparison of four methods of endotracheal tube passage in simulated airways: There is room for improved techniques

Prediction of the Size of Double Lumen Endotracheal Intubation by Measuring the Diameter of the Trachea

Removal methods of rigid stylets to minimise adverse force and tracheal tube movement: a mathematical and in‐vitro analysis in manikins

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