Saudi Medical Journal. 2008; 29 (12): 1719-1722
em Inglês
| IMEMR
| ID: emr-90104
ABSTRACT
To investigate intra cuff pressure changes in low-flow anesthesia [LFA] and high-flow [HFA] N2O anesthesia during moderate-duration surgical procedures. We carried out this prospective, randomized, single blind study at Numune Educational and Research Hospital, Ankara, Turkey between January to December 2005. Seventy patients aged between 18-65 years, American Society of Anesthesiologists [ASA] physical status grades I-III, undergoing elective surgery were enrolled in this study. Following a standardized induction, anesthesia was maintained with isoflurane [end-tidal 0.9-1%] at 4 L/minute for the HFA group, or 1 L/minute for the LFA group fresh gas flows. Endotracheal tube cuff [intra cuff] pressures were measured continuously with a pressure manometer, and inspired oxygen and N2O levels were noted every 10 minutes throughout the study. There was no significant difference between HFA and LFA groups for initial [first] cuff pressures [mean +/- SD, HFA=20.9 +/- 4.19, LFA=20.4 +/- 4.11, cmH2O], and maximum cuff pressures [MCP] [mean +/- SD, HFA=32.3 +/- 18.74, LFA=33.5 +/- 8.89, cmH2O] [p > 0.05]. The time to reach the maximum intra cuff pressure was significantly shorter in the LFA group [77.4 +/- 20.33 minutes], than the HFA group [89.3 +/- 23.94 minutes], [p=0.038]. Between the tenth and nineteenth minutes, inspired oxygen level was significantly higher in the HFA group [p=0.001], whereas inspired N2O was significantly higher in the LFA group [p=0.001]. The intra cuff pressures should be monitored carefully during LFA, since the duration to reach the maximum intra cuff pressures was shorter than that of HFA
Buscar no Google
Índice:
IMEMR (Mediterrâneo Oriental)
Assunto principal:
Pressão
/
Óxido Nitroso
Limite:
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Saudi Med. J.
Ano de publicação:
2008
Similares
MEDLINE
...
LILACS
LIS