IRIS – Institutional Research Information System
IRIS è il sistema di gestione della ricerca dell’Università degli Studi di Milano-Bicocca.Il repository BOA è il modulo del sistema dedicato alla raccolta e alla disseminazione della produzione scientifica di Ateneo. Le pubblicazioni sono ricercabili per parola chiave attraverso il box nella barra orizzontale in alto oppure, mediante il pulsante Sfoglia, per "Afferenza", "Autore", "Titolo", "Tipologia" o "Settore scientifico-disciplinare".
IRIS contiene inoltre alcuni moduli dedicati alla registrazione dei progetti e dei contratti, e alla reportistica avanzata per le attività di valutazione della ricerca
EnglishObjective: To assess the behavior of different helmets after discontinuation of fresh gas flow by disconnection at the helmet inlet, flow generator, or gas source. Design and setting: Randomized physiological study in a university research laboratory. Patients: Five healthy volunteers. Intervention: CPAP (FIO<sub>2</sub> 50%, PEEP 5 cmH<sub>2</sub>O) delivered in random sequence with three different helmets: 4Vent (Rüsch), PN500 (Harol), CaStar (StarMed) with antisuffocation valve open or locked. For each helmet all three disconnections were randomly employed up to 4 min. Measurements and results: During flow disconnection we measured: respiratory rate and tidal volume by respitrace; inspiratory and expiratory CO<sub>2</sub> concentration, and FIO<sub>2</sub> from a nostril; SpO<sub>2</sub> by pulse oxymetry. Independently of the site of disconnection we observed a fast increase in CO<sub>2</sub> rebreathing and minute ventilation, associated with a decrease in inspired O<sub>2</sub> concentration. In the absence of an operational safety valve, larger helmet size and lower resistance of the inlet hose resulted in slower increase in CO<sub>2</sub> rebreathing. The presence of the safety valve limited the rebreathing of CO<sub>2</sub>, and the increase in minute ventilation but did not protect from a decrease in FIO<sub>2</sub> and loss of PEEP. Conclusions: While the use of a safety valve proved effective in limiting CO<sub>2</sub> rebreathing, it did not protect from the risk of hypoxia related to decrease in FIO<sub>2</sub> and loss of PEEP. In addition to a safety antisuffocation valve, a dedicated monitoring and alarming systems are needed to employ helmet CPAP safely. © 2006 Springer-Verlag.
http://hdl.handle.net/10281/4827| Citazione: | Patroniti, N., Saini, M., Zanella, A., Isgrò, S., & Pesenti, A. (2006). Danger of helmet continuous positive airway pressure during failure of fresh gas source supply. INTENSIVE CARE MEDICINE, 33(1), 153-157. |
| Tipo: | Articolo in rivista - Articolo scientifico |
| Carattere della pubblicazione: | Scientifica |
| Titolo: | Danger of helmet continuous positive airway pressure during failure of fresh gas source supply |
| Autori: | Patroniti, N; Saini, M; Zanella, A; Isgrò, S; Pesenti, A |
| Autori interni: | PESENTI, ANTONIO MARIA PATRONITI, NICOLO' ANTONINO ZANELLA, ALBERTO |
| Data di pubblicazione: | gen-2006 |
| Lingua: | English |
| Rivista: | INTENSIVE CARE MEDICINE |
| Digital Object Identifier (DOI): | 10.1007/s00134-006-0446-5 |
| Appare nelle tipologie: | 01 - Articolo su rivista |
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