Document Detail

A clinical evaluation of four disposable laryngeal masks in adult patients.
MedLine Citation:
PMID:  19019649     Owner:  NLM     Status:  MEDLINE    
STUDY OBJECTIVE: To compare the clinical use of four disposable laryngeal masks (DLMs): the Ambu laryngeal mask [Ambu LM], Solus, Laryngeal Mask Airway (LMA) Unique, and Soft Seal. DESIGN: Prospective, randomized study. SETTING: Operating room and recovery area of a university-affiliated ambulatory surgery unit. PATIENTS: 200 adult ASA physical status I, II, and III patients, scheduled for ambulatory procedures. INTERVENTIONS: Patients underwent insertion of the DLM by nonexperienced residents. MEASUREMENTS: The time and number of attempts needed for insertion, quality of ventilation, airway sealing pressure at 60 cmH(2)O of intracuff pressure, and complications were all evaluated. MAIN RESULTS: Ease of insertion was greater (P = 0.03) and first attempt success rate was higher with the Ambu LM (78%) and LMA Unique (80%). The Solus most often needed three attempts to be placed (12 cases); the Ambu LM needed three similar attempts in two cases; the LMA Unique in 4 cases; and the Soft Seal in 5 cases (P = 0.018). The LMA Unique achieved the highest rate of optimal ventilation (46/49 cases) of the 4 groups. Airway sealing pressure was significantly higher with the Soft Seal (27.3 +/- 5 mmHg), compared to the Ambu LM (23.7 +/- 5 mmHg), the Solus (20.9 +/- 4 mmHg), and the LMA Unique (22.1 +/- 6 mmHg) (P < 0.001). Blood staining of the DLM on removal was most frequent with the Soft Seal (38%). CONCLUSIONS: The Ambu LM and LMA Unique DLMs appear to be easier to insert by inexperienced residents and are less traumatic for the patient. The Soft Seal achieves a higher airway seal than other devices, but it causes more mucosal trauma. The Solus had the highest insertion failure rate of the 4 groups.
Ana M López; Ricard Valero; Paula Bovaira; Montserrat Pons; Xavier Sala-Blanch; Teresa Anglada
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Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial     Date:  2008-11-18
Journal Detail:
Title:  Journal of clinical anesthesia     Volume:  20     ISSN:  0952-8180     ISO Abbreviation:  J Clin Anesth     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-12-01     Completed Date:  2009-02-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8812166     Medline TA:  J Clin Anesth     Country:  United States    
Other Details:
Languages:  eng     Pagination:  514-20     Citation Subset:  IM    
Department of Anesthesiology and Reanimation, Hospital Clínic of Barcelona, University of Barcelona, Spain.
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MeSH Terms
Blood Loss, Surgical / prevention & control
Disposable Equipment*
Intubation, Intratracheal / instrumentation
Laryngeal Masks* / adverse effects
Middle Aged
Pharyngitis / etiology,  prevention & control
Time Factors
Treatment Outcome

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

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