Inhalationsanästhesie bei der Katze: Die Entwicklung des
Cuffdrucks bei Verwendung von Lachgas
Franziska Benesch,
Frauke Paul,
Michaele Alef
Abstract:Zusammenfassung
Gegenstand und Ziel Die Verwendung eines
Lachgas-/Sauerstoff-Gemischs bei einer Inhalationsanästhesie
führt durch Diffusion von Lachgas in die Blockmanschette des
Endotrachealtubus (Cuff) zu einem Anstieg des Drucks im Cuff, wenn dieser, wie
üblich, mit Luft gefüllt wurde. Ziel der vorliegenden Studie
war, die Entwicklung des Cuffdrucks während einer
Isofluran-Lachga… Show more
“…They observed a rapid increase in ETT cuff pressures in the N 2 O group after the first 15 minutes and showed that the pressures increased to 45 cmH 2 O and above. [6].…”
Section: Discussionmentioning
confidence: 99%
“…Nitrous oxide (N 2 O), a gas anesthetic used in routine anesthesia, can quickly enter ETT cuffs and increase cuff pressure by diffusing into dead spaces [5,6]. The formation of tracheal mucosal lesions causes sore throat, hoarseness, and cough due to an increase in cuff pressure.…”
Objective: Postoperative sore throat (POST) is the most common discomfort after endotracheal intubation. Damage to the tracheal mucosa caused by inappropriate endotracheal tube (ETT) cuff pressure has been shown as the major factor. Monitoring the ETT cuff pressure at a certain value reduces this damage. Benzydamine hydrochloride (BH) has proven to be effective on sore throat and studies have shown that it is also effective on POST. In this study, the efficacy of BH and ETT cuff pressure monitoring on POST was evaluated.
Materials and methods: After ethics committee approval 210 patients in the ASA (American Society of Anesthesiologists) I-III risk group undergoing elective surgery were included in the study. Routine anesthesia monitoring, induction, and maintenance were provided. Patients were randomly divided into three groups. Thirty minutes before surgery, the posterior pharyngeal wall was sprayed with BH in group 1 and distilled water in groups 2 and 3. Intraoperatively, the first and second groups were monitored to keep the ETT cuff pressure between 22 and 26 cmH
2
O, while no intervention was performed in the third group. The incidence and severity of postoperative dysphagia, hoarseness, and POST were questioned.
Results: There was no difference between demographic data, and gender was not associated with POST. There was a statistically significant difference between the first and second groups and the third group in terms of all three symptoms questioned (p<0.01). No difference was observed between the first and second groups. Side effect rates were similar. Smoking was not found to be associated with symptoms.
Conclusion: The incidence and severity of POST, dysphagia, and hoarseness are reduced when the ETT cuff is inflated with a pressure of 22-26 cmH
2
O after intubation with a manometer and maintained at this pressure range throughout the operation. There was no beneficial effect of BH.
“…They observed a rapid increase in ETT cuff pressures in the N 2 O group after the first 15 minutes and showed that the pressures increased to 45 cmH 2 O and above. [6].…”
Section: Discussionmentioning
confidence: 99%
“…Nitrous oxide (N 2 O), a gas anesthetic used in routine anesthesia, can quickly enter ETT cuffs and increase cuff pressure by diffusing into dead spaces [5,6]. The formation of tracheal mucosal lesions causes sore throat, hoarseness, and cough due to an increase in cuff pressure.…”
Objective: Postoperative sore throat (POST) is the most common discomfort after endotracheal intubation. Damage to the tracheal mucosa caused by inappropriate endotracheal tube (ETT) cuff pressure has been shown as the major factor. Monitoring the ETT cuff pressure at a certain value reduces this damage. Benzydamine hydrochloride (BH) has proven to be effective on sore throat and studies have shown that it is also effective on POST. In this study, the efficacy of BH and ETT cuff pressure monitoring on POST was evaluated.
Materials and methods: After ethics committee approval 210 patients in the ASA (American Society of Anesthesiologists) I-III risk group undergoing elective surgery were included in the study. Routine anesthesia monitoring, induction, and maintenance were provided. Patients were randomly divided into three groups. Thirty minutes before surgery, the posterior pharyngeal wall was sprayed with BH in group 1 and distilled water in groups 2 and 3. Intraoperatively, the first and second groups were monitored to keep the ETT cuff pressure between 22 and 26 cmH
2
O, while no intervention was performed in the third group. The incidence and severity of postoperative dysphagia, hoarseness, and POST were questioned.
Results: There was no difference between demographic data, and gender was not associated with POST. There was a statistically significant difference between the first and second groups and the third group in terms of all three symptoms questioned (p<0.01). No difference was observed between the first and second groups. Side effect rates were similar. Smoking was not found to be associated with symptoms.
Conclusion: The incidence and severity of POST, dysphagia, and hoarseness are reduced when the ETT cuff is inflated with a pressure of 22-26 cmH
2
O after intubation with a manometer and maintained at this pressure range throughout the operation. There was no beneficial effect of BH.
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