| Autor: |
Aikaterini, Chrysikopoulou, Pamela, Matheson, Maano, Milles, Zia, Shey, Milton, Houpt |
| Rok vydání: |
2006 |
| Předmět: |
|
| Zdroj: |
Pediatric dentistry. 28(3) |
| ISSN: |
0164-1263 |
| Popis: |
This study compared the effectiveness of 2 nasal hoods (Porter/Brown and Accutron) in reducing waste nitrous oxide gas during conscious sedation for routine pediatric dental treatment.Thirty children, ages 3 to 8 years (mean=5.4 +/- 1.2 years), participated in this study. Fifteen randomly selected children started with the Porter/Brown mask, which was then switched to the Accutron mask, and the other 15 children used the reverse order of masks. Four measurements of ambient nitrous oxide were recorded with a Miran 205B Portable Ambient Air Analyzer 5 minutes after each of the following: (1) administration of nitrous oxide; (2) placement of the rubber dam; (3) change of the nasal hood; and (4) reduction of the vacuum. Samples were taken 8 inches above the nose of the patient and in the room 5 feet away from the patient.Nitrous oxide levels were significantly lower (P.05) with the Porter/Brown system (31 +/- 40 ppm for the patient and 8 +/- 10 ppm for the room) compared with the Accutron system (375 +/- 94 ppm for the patient and 101 +/- 37 ppm for the room). When the suction was reduced, there was an increase in nitrous oxide levels with the Porter/Brown nasal hood (169 +/- 112 ppm for the patient and 28 +/- 18 ppm for the room), whereas the levels with the Accutron nasal hood remained high (368 +/- 107 ppm for the patient and 121 +/- 50 ppm for the room).This study demonstrated that removal of waste nitrous oxide was greater with the Porter/Brown device and that recommended suction levels must be used for optimum effectiveness. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
