Supplementary Oxygen and the Laryngeal Mask Airway—Evaluation of a Heat-and-Moisture Exchanger
| Autor: | M. Williams, R. M. L. Orme |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Adult
Male Adolescent chemistry.chemical_element Mascara Critical Care and Intensive Care Medicine Oxygen Laryngeal Masks 03 medical and health sciences 0302 clinical medicine Laryngeal mask airway Humans Medicine 030212 general & internal medicine Aged Aged 80 and over Oxygen supplementation business.industry Oxygen Inhalation Therapy Temperature Humidity 030208 emergency & critical care medicine Oxygenation Middle Aged Anesthesiology and Pain Medicine chemistry Heat and moisture exchanger Anesthesia Anesthesia Recovery Period Female Limiting oxygen concentration business |
| Zdroj: | Anaesthesia and Intensive Care. 27:509-511 |
| ISSN: | 1448-0271 0310-057X |
| DOI: | 10.1177/0310057x9902700513 |
| Popis: | Heat-and-moisture exchangers (HMEs) are routinely used in anaesthesia for the humidification and warming of inspired gases. The use of the Laryngeal Mask Airway (LMA) is widespread, and many anaesthetists choose to leave it in situ until the patient regains consciousness. In this study, we have investigated the effectiveness of an HME as a means of administering supplemental oxygen via LMA in the immediate postoperative period. Oxygen was administered at varying flow rates via the gas sampling port of the HME and the oxygen delivery recorded, using end-tidal oxygraphy as a measure of alveolar Po2. At an oxygen flow rate of 4 l.min−1, the HME provided a mean end-tidal oxygen concentration of 36.2% (±6.2), which compares favourably to other previously described devices. The HME thus represents a convenient, effective and economical means of oxygen supplementation via the LMA. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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