Diagnostic Yield and Safety of CP-EBUS-TBNA and RP-EBUS-TBLB under Moderate Sedation: A Single-Center Retrospective Audit

Prospective Randomized Comparison of Opioid-Based Versus Non-Opioid-Based Anaesthetic Protocols for Endobronchial Ultrasound-Guided Transbronchial Needle Aspiration (EBUS-TBNA)

Background: The evolution of interventional pulmonology has necessitated the refinement of anesthetic techniques to ensure the safety and efficacy of procedures such as endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA), particularly when performed outside the conventional operating room setting. The management of anesthesia in patients with significant comorbidities, classified as American Society of Anesthesiologists (ASA) class III, presents distinct challenges. In this context, the transtracheal block emerges as a viable alternative to total intravenous anesthesia (TIVA) for these high-risk procedures. Objectives: This study aims to evaluate the comparative safety and efficacy of opioid-based intravenous analgesia versus a regimen combining sedative agents with transtracheal block in the administration of anesthesia for EBUS TBNA in high-risk patients. Design: We conducted a randomized observational study involving 57 elective EBUS-TBNA patients classified as ASA class III. Methods: Participants were allocated into two cohorts: one receiving intravenous opioid analgesia and the other receiving a combination of sedative agents with transtracheal block. Collected data encompassed patient demographics, medical history, incidence of adverse events during anesthesia, indicators of sympathetic nervous system activation, patient satisfaction levels, and the procedural conditions as assessed by the operator. Results: Opioid anesthesia was associated with increased desaturation (95.7% vs. 60.6%; p < 0.05) and higher pain-related sympathetic responses (VAS and SCI at 40-100; p < 0.05). No differences in other adverse events, patient satisfaction, or procedural conditions were noted. Conclusions: In summary, the study indicates that transtracheal block combined with sedatives may be a safer anesthetic alternative to opioid-based regimens for high-risk EBUS-TBNA patients, reducing desaturation and pain-related sympathetic activity without affecting satisfaction or procedural efficacy.

Diagnostic efficacy of endobronchial ultrasound-guided transbronchoscopic lung biopsy for identifying tuberculous nodules

BACKGROUND

Microbiological diagnosis of pulmonary tuberculosis (PTB) is hampered by a low pathogen burden, low compliance and unreliable sputum sampling. Although endobronchial ultrasound-guided transbronchoscopic lung biopsy (EBUS-TBLB) has been found to be useful for the assessment of intrapulmonary nodules in adults, few data are available for the clinical diagnosis of pulmonary tuberculosis. Here, we evaluated EBUS-TBLB as a diagnostic procedure in adult patients with radiologically suspected intrapulmonary tuberculous nodules.

METHODS

This was a retrospective analysis of patients admitted with pulmonary nodules between January 2022 and January 2023 at Hangzhou Red Cross Hospital. All patients underwent EBUS-TBLB, and lung biopsy samples were obtained during hospitalization. All samples were tested for Mycobacterium tuberculosis using acid‒fast smears, Bactec MGIT 960, Xpert MTB/RIF, next-generation sequencing (NGS), and DNA (TB‒DNA) and RNA (TB‒RNA). The concordance between different diagnostic methods and clinical diagnosis was analysed via kappa concordance analysis. The diagnostic efficacy of different diagnostic methods for PTB was analysed via ROC curve.

RESULTS

A total of 107 patients were included in this study. Among them, 86 patients were diagnosed by EBUS-TBLB, and the overall diagnostic rate was 80.37%. In addition, 102 enrolled patients had benign lesions, and only 5 were diagnosed with lung tumours. Univariate analysis revealed that the diagnostic rate of EBUS-TBLB in pulmonary nodules was related to the location of the probe. The consistency analysis and ROC curve analysis revealed that NGS had the highest concordance with the clinical diagnosis results (agreement = 78.50%, κ = 0.558) and had the highest diagnostic efficacy for PTB (AUC = 0.778). In addition, Xpert MTB/RIF + NGS had the highest concordance with the clinical diagnosis results (agreement = 84.11%, κ = 0.667) and had the highest efficacy in the diagnosis of PTB (AUC = 0.826).

CONCLUSION

EBUS-TBLB is a sensitive and safe method for the diagnosis of pathological pulmonary nodules. Xpert MTB/RIF combined with NGS had the highest diagnostic efficacy and can be used in the initial diagnosis of PTB.