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Laryngeal Mask (laryngeal + mask)
Kinds of Laryngeal Mask Terms modified by Laryngeal Mask Selected AbstractsRandomized comparison of the SLIPA (Streamlined Liner of the Pharynx Airway) and the SS-LM (Soft Seal Laryngeal Mask) by medical studentsEMERGENCY MEDICINE AUSTRALASIA, Issue 5-6 2006Cindy Hein Abstract Objective:, The aim of the study was to compare the Streamlined Liner of the Pharynx Airway (SLIPA; Hudson RCI), a new supraglottic airway device, with the Soft Seal Laryngeal Mask (SS-LM; Portex) when used by novices. Methods:, Thirty-six medical students with no previous airway experience, received manikin training in the use of the SLIPA and the SS-LM. Once proficient, the students inserted each device in randomized sequence, in two separate patients in the operating theatre. Only two insertion attempts per patient were allowed. Students were assessed in terms of: device preference; success or failure; success at first attempt and time to ventilation. Results:, Sixty-seven per cent of the students preferred to use the SLIPA (95% confidence interval 49,81%). The SLIPA was successfully inserted (one or two attempts) in 94% of patients (34/36) and the SS-LM in 89% (32/36) (P = 0.39). First attempt success rates were 83% (30/36) and 67% (24/36) in the SLIPA and SS-LM, respectively (P = 0.10). Median time to ventilation was shorter with the SLIPA (40.6 s) than with the SS-LM (66.9 s) when it was the first device used (P = 0.004), but times were similar when inserting the second device (43.8 s vs 42.9 s) (P = 0.75). Conclusions:, In the present study novice users demonstrated high success rates with both devices. The SLIPA group achieved shorter times to ventilation when it was the first device they inserted, which might prove to be of clinical significance, particularly in resuscitation attempts. Although the Laryngeal Mask has gained wide recognition for use by both novice users and as a rescue airway in failed intubation, the data presented here suggest that the SLIPA might also prove useful in these areas. [source] In vitro study of magnetic resonance imaging artefacts of six supraglottic airway devicesANAESTHESIA, Issue 6 2010M. Zaballos Summary We investigated the artefacts created during magnetic resonance imaging by five different laryngeal mask airways: the Classic (cLMAÔ); the LMA ProSealÔ; the LMA UniqueÔ; the Ambu® Disposable Laryngeal Mask; the LMA SupremeÔ; and one other supraglottic airway device, the i-gel supraglottic airway. The devices were placed on top of and inside a phantom simulator to resemble the position in vivo. The artefacts with the cLMA, Unique and Supreme were similar and related to ferromagnetic material in the pilot balloon valve. Artefacts were more prominent with the ProSeal. There were no artefacts with the Ambu Disposable Laryngeal Mask or the i-gel. [source] Anaesthesia for endoscopic sinus surgeryACTA ANAESTHESIOLOGICA SCANDINAVICA, Issue 7 2010A. R. BAKER Endoscopic sinus surgery is commonly performed and has a low risk of major complications. Intraoperative bleeding impairs surgical conditions and increases the risk of complications. Remifentanil appears to produce better surgical conditions than other opioid analgesics, and total intravenous anaesthesia with propofol may provide superior conditions to a volatile-based technique. Moderate hypotension with intraoperative , blockade is associated with better operating conditions than when vasodilating agents are used. Tight control of CO2 does not affect the surgical view. The use of a laryngeal mask may be associated with improved surgical conditions and a smoother emergence. It provides airway protection equivalent to that provided by an endotracheal tube in well-selected patients, but offers less protection from gastric regurgitation. Post-operatively, multimodal oral analgesia provides good pain relief, while long-acting local anaesthetics have been shown not to improve analgesia. [source] Use of a new intubating laryngeal mask , CTrachÔ, in patients with known difficult airwaysACTA ANAESTHESIOLOGICA SCANDINAVICA, Issue 3 2006C. E. Bjerkelund No abstract is available for this article. [source] Bilateral hypoglossal nerve injury following the use of the laryngeal mask without the use of nitrous oxideACTA ANAESTHESIOLOGICA SCANDINAVICA, Issue 3 2004M. Sommer Hypoglossal nerve injury is a rare complication of anaesthesia airway management in adults. Until now the use of nitrous oxide for anaesthesia supposedly contributed to this complication. We present a case of bilateral hypoglossal nerve injury following the use of a laryngeal mask airway without the use of nitrous oxide. At the conclusion of 3 h of surgery in extreme side rotation, a 15-year-old boy of 88 kg could not extend his tongue beyond his teeth. An MRI confirmed the absence of pharyngeal haematoma and the absence of thrombosis of the basilar artery. We conclude that even when patients have no medical history and nitrous oxide is not being used, prolongation of the operation in an extreme position might increase the risk of major complications with a laryngeal mask. [source] Light-guided intubation via the intubating laryngeal mask using a prototype illuminated flexible catheterACTA ANAESTHESIOLOGICA SCANDINAVICA, Issue 8 2000Clinical experience in 400 patients Background: The transillumination of the soft tissues of the neck using lighted stylets has been used as an aid for tracheal intubation. We evaluated the efficacy and safety of a prototype illuminated flexible catheter to facilitate light-guided intubation through the intubating laryngeal mask. Methods: The illuminated flexible catheter consists of a completely flexible thin plastic catheter with a bulb attached to its distal end. The device was placed into a silicone tracheal tube in such a way that the bulb was adjusted at the distal end of the tracheal tube. The tracheal tube preloaded with the device was inserted through the intubating laryngeal mask and, by observing the glow on the neck, was advanced into the trachea. We report our experience with light-guided intubation through the intubating laryngeal mask in 400 ASA grade 1,3 patients undergoing general anaesthesia. Results: The intubating laryngeal mask was inserted successfully in all patients. The overall intubating success rate was 99.8% (399/400); in 367 (91.8%) cases at the first attempt, in 28 (7%) at the second, in 4 (1%) at the third and in one case (0.2%) at the fifth attempt. There were 27 patients with potentially difficult airways. All these cases were intubated successfully; in 23 of 27 (85.2%) at the first attempt, in 3 of 27 (11.1%) at the second and one of 27 patients (3.7%) at the third attempt. Conclusion: We conclude that the use of the illuminated flexible catheter facilitates the intubation through the intubating laryngeal mask. The suggested light-guided intubating method proved to be a simple, safe and effective technique. [source] Correspondence: Blind intubation through the air-Q laryngeal mask in children , A word of cautionPEDIATRIC ANESTHESIA, Issue 9 2010John E. Fiadjoe No abstract is available for this article. [source] Simple, reliable replacement of pilot balloons for a variety of clinical situationsPEDIATRIC ANESTHESIA, Issue 6 2010PETE G. KOVATSIS md Summary When a pilot balloon fails or is an impediment to an intubation, such as via a pediatric laryngeal mask, options are generally limited to a tracheal tube exchange. Simple and effective solutions are described to replace a pilot balloon in a variety of clinical situations by using equipment that is readily available in operating rooms. Equipment such as intravenous catheters or epidural clamp connectors provides reliable, light weight, and streamlined substitutions for pilot balloons when connected to the pilot-cuff inflation line. [source] Removal of the laryngeal mask after tracheal intubation through itPEDIATRIC ANESTHESIA, Issue 2 2010Takashi Asai No abstract is available for this article. [source] Airway management and fiberoptic tracheal intubation via the laryngeal mask in a child with Marshall,Smith syndromePEDIATRIC ANESTHESIA, Issue 4 2008Andreas Machotta No abstract is available for this article. [source] The prolonged use of the laryngeal mask airway in a neonate with airway obstruction and Treacher Collins syndromePEDIATRIC ANESTHESIA, Issue 6 2003Martin J.L. Bucx MD Summary Upper airway obstruction and difficult tracheal intubation are often encountered in patients with Treacher Collins syndrome (mandibulofacial dysostosis). In this case report, the use of a laryngeal mask airway (LMATM) in a 10-day-old newborn with severe Treacher Collins syndrome and acute airway obstruction is described. It successfully relieved the airway obstruction and was left in situ for an exceptionally long period of 4 days. The difficult decisions with respect to the management of the airway and specifically the role of the laryngeal mask are described. In our opinion, in some newborns with severe mandibulofacial disorders and upper airway obstruction, where conservative airway management procedures have failed, the laryngeal mask can be considered not only to relieve the obstruction but also to buy time until there is full insight into the medical condition and its consequences. [source] Appropriate laryngeal mask airway size for overweight and underweight childrenANAESTHESIA, Issue 1 2010H. J. Kim Summary The aim of this study was to compare conventional laryngeal mask airway sizing by weight with sizing by age in over- or underweight children. We studied 26 overweight (body mass index > 85th centile) and 26 underweight (body mass index < 15th centile) children. After general anaesthesia was induced, laryngeal mask airways sized by the patient's weight and by an ideal weight (estimated from the patient's age according to standardised tables) were inserted consecutively. In overweight children, oropharyngeal leak pressure was significantly greater when the laryngeal mask was sized by the patient's actual weight. On the other hand in underweight children, it was significantly greater when sized by the ideal weight. In conclusion, laryngeal mask airway sizing according to the manufacturer's weight-based recommendation is to be preferred in overweight children, but laryngeal mask airway size by an ideal weight estimated from the patient's age is a better choice in underweight children. [source] High frequency jet ventilation through a supraglottic airway device: a case series of patients undergoing extra-corporeal shock wave lithotripsyANAESTHESIA, Issue 12 2009D. J. Canty Summary High frequency jet ventilation has been shown to be beneficial during extra-corporeal shock wave lithotripsy as it reduces urinary calculus movement which increases lithotripsy efficiency with better utilisation of shockwave energy and less patient exposure to tissue trauma. In all reports, sub-glottic high frequency jet ventilation was delivered through a tracheal tube or a jet catheter requiring paralysis and direct laryngoscopy. In this study, a simple method using supraglottic jet ventilation through a laryngeal mask attached to a circle absorber anaesthetic breathing system is described. The technique avoids the need for dense neuromuscular blockade for laryngoscopy and the potential complications associated with sub-glottic instrumentation and sub-glottic jet ventilation. The technique was successfully employed in a series of patients undergoing lithotripsy under general anaesthesia as an outpatient procedure. [source] A comparison of a flexometallic tracheal tube with the intubating laryngeal mask tracheal tube for nasotracheal fibreoptic intubation using the two-scope technique,ANAESTHESIA, Issue 12 2009M. R. Rai Summary We compared the incidence and site of impingement of a flexometallic tracheal tube with those of the re-usable intubating laryngeal mask (ILMA) tube in 60 anaesthetised patients undergoing nasotracheal fibreoptic intubation for oral surgery. A two-scope technique was used, observing the site of impingement with one scope whilst intubating with the other. The tubes were 6.0-mm in females and 6.5-mm in males. Impingement occurred with 10 (33%) flexometallic and 2 (7%) ILMA tubes (p < 0.032). In all but one case, the impingement was posterior to the right arytenoid cartilage. When impingement was observed, a single disempaction with a 90° anticlockwise rotational manoeuvre overcame impingement in every case except one, allowing successful intubation. We conclude that the incidence of impingement of the tracheal tube, and therefore of potential laryngeal trauma from nasotracheal fibreoptic intubation, is significantly greater with the flexometallic tube than with the ILMA tube. [source] Effect-site concentration of remifentanil for laryngeal mask airway insertion during target-controlled infusion of propofolANAESTHESIA, Issue 2 2009M. K. Kim Summary The purpose of this study was to determine the effect-site concentration of remifentanil that would provide optimal conditions for successful laryngeal mask airway insertion during a target-controlled infusion (TCI) of propofol at 3.5 ,g.ml,1 without the use of neuromuscular blockade. Five minutes after propofol infusion, remifentanil was infused at a dose determined by a modified Dixon's up-and-down method. Five minutes after remifentanil infusion, the laryngeal mask was inserted. The effect-site concentration of remifentanil for successful laryngeal mask insertion in 50% of adults (EC50) was 3.04 (SD 0.49) ng.ml,1 during a TCI of 3.5 ,g.ml,1 propofol without neuromuscular blockade. From the probit analysis, the EC50 and EC95 of remifentanil were 2.84 ng.ml,1 (95% CI 2.09,3.57 ng.ml,1) and 3.79 ng.ml,1 (95% CI 3.26,9.25 ng.ml,1), respectively. [source] A rigid ,flexible' laryngeal maskANAESTHESIA, Issue 3 2007A. Thompson No abstract is available for this article. [source] Tracheal intubation through a laryngeal mask may kink the pilot tubeANAESTHESIA, Issue 8 2004T. Moeller-Bertram No abstract is available for this article. [source] A novel use for the ProSeal laryngeal maskANAESTHESIA, Issue 11 2003S Green No abstract is available for this article. [source] Take off of the pilot tube on the laryngeal maskANAESTHESIA, Issue 5 2002B. Singh No abstract is available for this article. [source] Cuff volume and size selection with the laryngeal maskANAESTHESIA, Issue 12 2000T. Asai First page of article [source] Difficult airway equipment in English emergency departmentsANAESTHESIA, Issue 5 2000T. Morton The need for tracheal intubation in the emergency department is often unpredictable and precipitous in nature. When compared with the operating room, a higher incidence of difficult intubation is observed. There are currently no accepted guidelines with respect to the stocking of difficult airway equipment in the emergency department. We have conducted a telephone survey to determine the availability of equipment for the management of the difficult airway in English emergency departments. Overall, the majority of units held a curved laryngoscope blade (100%), gum elastic bougie (99%) and surgical airway device (98%). Of alternative devices for ventilation, a laryngeal mask airway was kept by 65% of departments, a needle cricothyroidostomy kit by 63% and an oesophageal-tracheal twin-lumen airway (Combitube) by 18%. Of alternative devices for intubation, fewer than 10% held a retrograde intubating kit, intubating laryngeal mask, bronchoscope or lighted stylet. Seventy-four per cent of departments held an end-tidal carbon dioxide detector. [source] Resistive load of laryngeal mask airway and proseal laryngeal mask airway in mechanically ventilated patientsACTA ANAESTHESIOLOGICA SCANDINAVICA, Issue 6 2003G. Natalini Background:, The ProSeal Laryngeal Mask Airway (PLMA) ventilation tube is narrower and shorter than the standard Laryngeal Mask Airway (LMA) and is without the vertical bars at the end of the tube. In this randomized, crossover study, PLMA and LMA resistances were compared. Methods:, Respiratory mechanics was calculated in 26 anesthetized, mechanically ventilated patients with both LMA and PLMA. The laryngeal mask positioning was fiberoptically evaluated. Differences in the respiratory mechanics of the LMA and the PLMA were attributed to the differences between the laryngeal masks. Results:, In the total study population the airway resistance was 1.5 ± 2.6 hPa.l,1.s,1 (P = 0.005) higher with the PLMA than with the LMA. During the PLMA use, the peak expiratory flow reduced by 0.02 ± 0.05 l min,1 (P = 0.046), the expiratory resistance increased by 0.6 ± 1.3 hPa.l,1.s,1 (P = 0.022), and the time constant of respiratory system lengthened by 0.09 ± 0.18 s (P = 0.023). These differences doubled when the LMA was better positioned than the PLMA, whereas they disappeared when the PLMA was positioned better than the LMA. Conclusions:, The standard LMA offers a lower resistive load than the PLMA. Moreover, the fitting between the laryngeal masks and the larynx, as fiberoptically evaluated, plays a major role in determining the resistive properties of these devices. [source] Are all single-use laryngeal masks the same?ANAESTHESIA, Issue 6 2006A. Van Zundert No abstract is available for this article. [source] | ||||||||||