Guidelines and criteria for the placement of laryngeal mask airways in dogs

Wiederstein, Iris; Moens, Yves

doi:10.1111/j.1467-2995.2008.00398.x

Cited by 23 publications

(14 citation statements)

References 32 publications

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“…; Bateman et al. ; Fulkerson & Gustafson ; Wiederstein & Moens ). These studies, however, used audible measures of leakage, rather than the highly sensitive detection of volatile anaesthetic concentrations, as was done in the present study.…”

Section: Discussionmentioning

confidence: 99%

A comparison between the v-gel supraglottic airway device and the cuffed endotracheal tube for airway management in spontaneously breathing cats during isoflurane anaesthesia

Oostrom

Krauss

Sap

2013

Veterinary Anaesthesia and Analgesia

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Section: Discussionmentioning

confidence: 99%

A comparison between the v-gel supraglottic airway device and the cuffed endotracheal tube for airway management in spontaneously breathing cats during isoflurane anaesthesia

Oostrom

Krauss

Sap

2013

Veterinary Anaesthesia and Analgesia

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“…In several animal species as in humans, the use of a LM for airway management is described as easy, simple and rapid (Benumof 1992, Wemyss-Holden and others 1999, Kazakos and others 2007, Wiederstein and Moens 2008). This is also the case in adult (Goldmann and others 2005) and neonatal (Roberts and others 2010) pigs.…”

Section: Discussionmentioning

confidence: 99%

The use of bougie‐guided insertion of a laryngeal mask airway device in neonatal piglets after unexpected complications

Morath

Skogmo

Ranheim

et al. 2014

Vet Record Case Reports

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After marked airway obstruction with laryngeal mask (LM) placement in neonate piglets, anatomical observations in cadavers revealed a large epiglottis advancing markedly over the soft palate. CT imaging in vivo confirmed that the LM pushes the epiglottis caudally thereby obstructing the larynx. As a new approach, in 20 piglets a flexible PVC bougie placed under laryngoscopy was used to guide the LM to the correct position at the larynx. Placement of the bougie was easy and the LM was positioned successfully in all piglets at first attempt. In 14 piglets, the epiglottis was positioned dorsal to the soft palate before LM insertion and had to be pushed downwards to advance the bougie. In case of failure of LM placement with potential airway obstruction, the use of a bougie to guide the LM over the epiglottis was simple, rapid, and improved the success rate without complication.

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“…Following induction of anesthesia, animals were instrumented with a laryngeal mask airway (LMA; size 3, AES, Black Diamond, WA), placed orally to seal the rima glottis and connected via a three-way adaptor to an anesthetic breathing circuit (32). The cuff of the LMA was inflated to ensure a secure seal around the rima glottidis during ventilation.…”

Section: General Anesthesia and Instrumentationmentioning

confidence: 99%

Effect of inhaled carbon dioxide on laryngeal abduction

Cheetham

Jones

Martin‐Flores

2015

Journal of Applied Physiology

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Hypercapnia produces a profound effect on respiratory drive and upper airway function to maintain airway patency. Previous work has evaluated the effects of hypercapnia on the sole arytenoid abductor, the posterior cricoarytenoid (PCA), using indirect measures of function, such as electromyography and direct nerve recording. Here we describe a novel method to evaluate PCA function in anesthetized animals and use this method to determine the effects of hypercapnia on PCA function. Eight dogs were anesthetized, and a laryngeal mask airway was used, in combination with high-speed videoendoscopy, to evaluate laryngeal function. A stepwise increase in inspired partial pressure of CO2 produced marked arytenoid abduction above 70-mmHg end-tidal CO2 (ETCO2 ) (P < 0.001). Glottic length increased above 80-mmHg ETCO2 (P < 0.02), and this lead to underrepresentation of changes in glottic area, if standard measures of glottic area (normalized glottic gap area) were used. Use of a known scale to determine absolute glottic area demonstrated no plateau with increasing ETCO2 up to 120 mmHg. Ventilatory parameters also continued to increase with no evidence of a maximal response. In a second anesthetic episode, repeated bursts of transient hypercapnia for 60 s with an ETCO2 of 90 mmHg produced a 43-55% increase in glottic area (P < 0.001) at or shortly after the end of the hypercapnic burst. A laryngeal mask airway can be used in combination with videoendoscopy to precisely determine changes in laryngeal dimensions with high temporal resolution. Absolute glottic area more precisely represents PCA function than normalized glottic gap area at moderate levels of hypercapnia.

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Guidelines and criteria for the placement of laryngeal mask airways in dogs

Cited by 23 publications

References 32 publications

A comparison between the v-gel supraglottic airway device and the cuffed endotracheal tube for airway management in spontaneously breathing cats during isoflurane anaesthesia

A comparison between the v-gel supraglottic airway device and the cuffed endotracheal tube for airway management in spontaneously breathing cats during isoflurane anaesthesia

The use of bougie‐guided insertion of a laryngeal mask airway device in neonatal piglets after unexpected complications

Effect of inhaled carbon dioxide on laryngeal abduction

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