Journals / Türk Anestezi ve Reanimasyon Dergisi / 2006 / Cilt: 34 - Sayı: 5

Comparison of preoperative tests for predicting difficult endotracheal intubation

Zor endotrakeal entübasyonun tahmininde preoperatif testlerin etkinliğinin karşılaştırılması

Pages
312–319
Publication Date
2022-11-05
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Not all but some of the preoperative tests have significant predictive value for difficult intubation.

📌 3 Key Takeaways

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Objective & Hypothesis:Aim: Many different tests were proposed preoperatively to predict difficult endotracheal intubations.
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Key Findings & Data:In this prospective study, we aimed to assess the effectiveness of the tests for predicting difficult intubation.Materials and Methods: 603 adult patients (238 male, 365 female) submitted for elective surgery under general anesthesia were included in this study.
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Conclusion & Impact:Not all but some of the preoperative tests have significant predictive value for difficult intubation.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Aim: Many different tests were proposed preoperatively to predict difficult endotracheal intubations. In this prospective study, we aimed to assess the effectiveness of the tests for predicting difficult intubation.Materials and Methods: 603 adult patients (238 male, 365 female) submitted for elective surgery under general anesthesia were included in this study. Age, height, weight, interincisor gap, neck circumference, sternomental and thyromental distance were recorded during preoperative evaluation. Wilson risk score, modified Mallampati classification, head-neck movement, mandibular protrusion, history of difficult laryngoscopy or intubation and anatomic anomalies were also noted. Cormack and Lehane classification was used for visualization of the larynx. The number and duration of attempts at each tracheal intubation were recorded.Results: Tracheal intubations were difficult to perform in 25 (4.1%) patients. There was not any significant correlation between the difficult intubation and weight, thyromental and sternomental distances, mandibular protrusion and limited neck extension of the patients (p>0.05). Difficult intubations had significant association with increased age, male sex, two and more Wilson's risk score, mean interincisor gap and neck circumference, increased Mallampati score, Cormack-Lehane Grade 3 or 4 and decreased mouth opening (p< 0.05). < 2 cm interincisor gap had high (99 %) specificity. Also sensitivity of Cormack-Lehane Grade 3 or 4 was found higher (71 %) than other parameters.Conclusions: Cormack and Lehane classification is the most valuable test for predicting difficult intubation. Therefore laringoscopic view must be evaluated well and suitable position for the patient must be obtained. The highest specificity (99.8%) and positive predictive value (50%) belongs to < 2 cm interincisor gap in our patients as a preoperative test. Not all but some of the preoperative tests have significant predictive value for difficult intubation.

Özet

Amaç: Zor entübasyonun tahmininde birçok farklı test kullanılmaktadır. Bu çalışmada amacımız tüm bu testlerin zor entübasyonu tahminde etkinliğini değerlendirmektir.Gereç ve Yöntem: Çalışmaya genel anestezi altında elektif operasyonu planlanan 603 yetişkin hasta (238 erkek, 365 kadın) dahil edildi. Olguların yaş, boy, vücut ağırlığı, boyun çapı, interinsizör aralık, sternomental ve tiromental mesafe ölçümleri kaydedildi. Wilson toplam risk skoru, modifiye mallampati sınıflandırması, baş boyun hareketleri, mandibula protrüzyonu, zor laringoskopi veya entübasyon öyküsü ve anatomik anomaliler değerlendirildi.Bulgular: 25 hastada (% 4.1) trakeal entübasyon güçlüğü ile karşılaşıldı. Zor entübasyon ile vücut ağırlığı, tiromental ve sternomental mesafe, mandibular çıkıntı ve boyun ekstansiyon kısıtlılığı arasında bir korelasyon bulunmadı (p>0.05). İleri yaş, erkek cinsiyet, ?2 Wilson toplam risk skoru, interinsizör aralık ve boyun çevresi, yüksek Mallampati skoru, Cormack-Lehane Grade 3 veya 4, ağız açıklığının azalması ile zor entübasyon arasında anlamlı bir bağlantı bulundu (p< 0.05). < 2 cm. interinsizör aralık yüksek (% 99) seçiciliğe sahipti. Cormack-Lehane Grade 3 veya 4'ün duyarlılığı diğer parametrelerden daha yüksek bulundu (% 71).Sonuçlar: Cormack-Lehane sınıflandırması zor entübasyonun tahmininde en değerli testtir. Bu nedenle laringoskopik görüntü iyi değerlendirilmeli ve hastaya en uygun pozisyon verilmelidir. < 2 cm.. interinsizör aralık en yüksek seçicilik (% 99.8) ve pozitif öngörü değerine (% 50) sahipti. Tüm testler değil ancak bazı preoperatif testler zor entübasyon için önemli tahmin değerine sahiptir.

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Cite This Article

SABANCI, Ü., TEKİN, S., EKİCİ, N., LÜLECİ, N., TOPÇU, İ. (2022). Comparison of preoperative tests for predicting difficult endotracheal intubation. Türk Anestezi ve Reanimasyon Dergisi, Cilt: 34 - Sayı: 5, 312–319. https://ajindex.com/articles/620068

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