Overview Chlorhexidine Mouthrinse Before EBUS-TBNA Status: Active, not recruiting Trial end date: 2021-12-11 Target enrollment: Participant gender: Summary The purpose of this study is to investigate whether chlorhexidine mouthrinse is effective in preventing microbial contamination during endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA). Phase: Phase 4 Details Lead Sponsor: Seoul National University HospitalTreatments: ChlorhexidineChlorhexidine gluconate