Özgün CUVAŞ, Hülya BAŞAR, Mehmet Akif YAZAR, Fatma DOKUMACI

Does lanz endotracheal tube offer advantage in nitrous oxide anesthesia?

Amaç: Artan kaf-içi basıncı ve postoperatif laringotrakeal komplikasyonlar, nitröz oksit anestezisinde önemli sorunlardır. Lanz® endotrakeal tüp, basınç düzenleyici valvi olan yeni bir tüptür. Biz, bu tüpün nitröz oksit anestezisinde postoperatif laringotrakeal komplikasyonlar açısından faydalı olup olamayacağını araştırmayı amaçladık. Yöntem ve Gereç: Bu çalışma 18-60 yaş arasında olan, 70 bayan hasta üzerinde yürütüldü. Grup S deki (n = 35) hastalar, standart endotrakeal tüp ile, Grup M deki (n = 35) hastalar ise Lanz® endotrakeal tüp ile entübe edildiler. Kaf-içi basınçlar, genel anestezi sırasında bir manometre ile takip edildi. Trakeal ekstübasyondan hemen sonra, PACU dan çıkış sırasında ve ekstübasyondan 24 saat sonra postoperatif laringotrakeal komplikasyonlar kaydedildi. Bulgular: Grup S de kaf-içi basınçlarda zamanla istatistiksel olarak anlamlı artış gözlendi (P < 0.001). Grup M de P0 değerleri yaklaşık 30 cm H2O seviyesinde sabit olarak devam etti (P > 0.05), ancak postoperatif laringotrakeal komplikasyonların şiddeti ve sıklığı bakımından iki grup arasında anlamlı farklılık gözlenmedi. Sonuç: Lanz® endotrakeal tüp, uygun şekilde çalışır ve kaf-içi basıncının artmasını sınırlar, fakat yaklaşık 2 saat süreli nitröz oksit anestezisini takiben, postoperatif laringotrakeal komplikasyonların şiddetini ve sıklığını azaltmak açısından bir avantaj sağlamaz.

Lanz endotrakeal tüp nitröz oksit anestezisinde avantaj Sağlarmı?

Increasing intracuff pressure and postoperative laryngotracheal complications are the important issues in nitrous oxide anesthesia. The Lanz® endotracheal tube is a new kind of tube with a pressure-regulating valve. We aimed to investigate whether or not this tube may be useful in nitrous oxide anesthesia in terms of postoperative laryngotracheal complications.Materials and Methods: The study included 70 female patients, aged 18-60 years. Patients were intubated with the standard endotracheal tube in Group S (n = 35) and the Lanz® endotracheal tube in Group M (n = 35). The intracuff pressures were monitored with a manometer during general anesthesia. Postoperative laryngotracheal complications were recorded after tracheal extubation, at the time of discharge from the Post- Anesthesia Care Unit and 24 hours after extubation.Results: There was a statistically significant increase in the intracuff pressures in Group S over time (P < 0.001), while the P0 values were maintained constantly at approximately 30 cm H2O in Group M (P > 0.05). However, intensity and incidence of postoperative laryngotracheal complications were not significantly different between the two groups.Conclusions: The Lanz® endotracheal tube works properly and limits the increase in intracuff pressure but offers no advantage with respect to reduction in the intensity and incidence of postoperative laryngotracheal complications after nitrous oxide anesthesia lasting approximately two hours.

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