Objective . To describe the diagnostic yield of electromagnetic navigation bronchoscopy (ENB) utilizing propofol for procedural deep sedation. Methods . We conducted a structured retrospective analysis of the medical records of patients who underwent ENB with propofol for the evaluation of pulmonary nodules and masses. We analyzed the relationships between lesion size and location, variance (CT-to-body divergence), and positron emission tomography findings on diagnostic yield. Diagnoses were established by histopathological evaluation and clinical-radiographic followup. Results . 41 patients underwent ENB during the study period. The overall diagnostic yield was 89% (42 of 47 target lesions). Among the 42 positive specimens, the diagnoses were squamous cell carcinoma (n=10), adenocarcinoma (n=14), small cell carcinoma (n=2), adenocarcinoma in situ (n=2), coccidioidomycosis (n=1), and inflammatory processes (n=13). Average lesion size was 3.01±0.21 cm and variance 3.6±0.15 mm. The diagnostic yield was greater when the lesion size was >4 cm (100%) and when variance was ≤4 mm (91% versus 87%, P=0.003). Conclusion . The diagnostic yield of ENB utilizing propofol for procedural deep sedation at our center was excellent. ENB with deep sedation may result in superior diagnostic yield compared with ENB performed with moderate sedation.

#	Concept	H-Index	Publications	Citations
1	Health Sciences	2	2	36
2	Medicine	2	2	36
3	Anesthesia	1	1	24
4	Gastroenterology	1	1	12
5	Hepatology	1	1	12

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