Open AccessLearning curve of conventional transbronchial needle aspiration
Author(s) -
Tutar Nuri,
Büyükoğlan Hakan,
Yılmaz İnsu,
Kanbay Asiye,
Önal Ömer,
Bilgin Mehmet,
Canöz Özlem,
Demir Ramazan,
Oyak Fatma Sema,
Gülmez İnci,
Çetinkaya Erdoğan
Publication year - 2014
Publication title -
the clinical respiratory journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.789
H-Index - 33
eISSN - 1752-699X
pISSN - 1752-6981
DOI - 10.1111/crj.12041
Subject(s) - medicine , observational study , malignancy , radiology , sampling (signal processing) , lymph node , predictive value , diagnostic accuracy , retrospective cohort study , surgery , filter (signal processing) , computer science , computer vision
Background and Aims Intrathoracic lymphadenopathy usually occurs as a result of neoplasm, granulomatous diseases, infections or reactive hyperplasia. Conventional transbronchial needle aspiration ( C ‐ TBNA ) is a cheap and safe procedure for diagnosing intrathoracic lymphadenopathy. The aim of this study was to assess the learning curve and diagnostic accuracy of C ‐ TBNA after an observational education programme. Methods In the present study, we retrospectively evaluated our first 62 C ‐ TBNA procedures at E rciyes U niversity between M ay 2012 and D ecember 2012 after an observational education programme. The first 31 patients were defined as group A , and the second 31 patients as group B . Results One hundred and seven lymph nodes were sampled in 62 patients by C ‐ TBNA . Adequate lymph node samples were obtained in 52 of the 62 patients (83.8%). In these 52 patients, two patients had a diagnosis of ‘suspicious of malignancy’ by C ‐ TBNA , and these patients were excluded from the analysis. In the remaining 50 cases who had adequate results, the sensitivity, specificity, positive predictive value ( PPV ), negative predictive value ( NPV ) and diagnostic accuracy per patient were 80.6%, 92.9%, 96.7%, 65.0% and 84.0%, respectively. The diagnostic accuracy rates of C ‐ TBNA for Group A and B were 72.0% (18/25) and 96.0% (24/25), and the difference was statistically significant ( P < 0.05). Conclusion C ‐ TBNA is a useful diagnostic procedure for sampling intrathoracic lymphadenopathies and masses that are adjacent to the bronchial system. An observational education programme is helpful for learning C ‐ TBNA . The diagnostic yield improves in time, and approximately 30 procedures may be sufficient to achieve successful results.