1. Pickles J, Jeffrey M, Datta A, et al. Is preparation for bronchoscopyoptimal? Eur Respir J. 2003;22(2):203-206.
2. Smyth CM, Stead RJ. Survey of ?exible ?breoptic bronchoscopy in theUnited Kingdom. Eur Respir J. 2002;19(3):458-463.
3. Putinati S, Ballerin L, Corbetta L, Trevisani L, Potena A. Patient satisfactionwith conscious sedation for bronchoscopy. Chest. 1999;115(5):1437-1440.
4. Gonzalez R, De-La-Rosa-Ramirez I, Maldonado-Hernandez A,Dominguez-Cherit G. Should patients undergoing a bronchoscopy besedated? Acta Anaesthesiol Scand. 2003;47(4):411-415.
5. Maguire GP, Rubinfeld AR, Trembath PW, Pain MC. Patients prefersedation for ?breoptic bronchoscopy. Respirol. 1998;3(2):81-85.
6. Du Rand IA, Blaikley J, Booton R, et al. BTS Guideline for diagnosticflexible bronchoscopy in adults. Thorax. 2013;68(Suppl 1):i1-i44
7. de Padua AI, de Castro M, Schmidt A, Neto JC, Terra Filho J, MartinezJAB. Clonidine as a preanesthetic agent for flexible bronchoscopy. RespirMed. 2004;98(8):746-751.
8. Fox BD, Krylov Y, Leon P, et al. Benzodiazepine and opioid sedationattenuate the sympathetic response to fiberoptic bronchoscopy.Prophylactic labetalol gave no additional benefit. Results of a randomizeddouble-blind placebo-controlled study. Respir Med. 2008;102(7):978-983.
9. Schwarz Y, Greif J, Lurie O, et al. Dextromethorphan premedicationreduces midazolam requirement: objective and subjective parameters inperibronchoscopy. Respiration. 2007;74(3):314-319.
10. Amini S, Peiman S. The effect of dextromethorphan premedication oncough and patient tolerance during flexible bronchoscopy: a randomized,double-blind, placebo-controlled trial. J Bronchol Interv Pulmonol.2017;24(4):263-267.
11. Vesco D, Kleisbauer JP, Orehek J. Attenuation of bronchofiberscopy-induced cough by an inhaled b2-adrenergic agonist, fenoterol. Am RevRespir Dis. 1988;138(4):805-806.
12. Wahidi MM, Jain P, Jantz M, et al. American College of Chest Physiciansconsensus statement on the use of topical anesthesia, analgesia,and sedation during flexible bronchoscopy in adult patients. Chest.2011;140(5):1342-1350.
13. Jose RJ, Shaefi S, Navani N. Sedation for flexible bronchoscopy: currentand emerging evidence. Eur Respir Rev. 2013;22(128):106-116.
14. Greig JH, Cooper SM, Kasimbazi HJN, Monie RDH, Fennerty AG, WatsonB. Sedation for fibre optic bronchoscopy. Respir Med. 1995;89(1):53-56.
15. Webb AR, Doherty JF, Chester MR, et al. Sedation for fibreopticbronchoscopy: comparison of alfentanil with papaveretum and diazepam.Respir Med. 1989;83(3):213-217.
16. Haga T, Fukuoka M, Morita M, Cho K, Tatsumi K. A prospective analysisof the efficacy and complications associated with deep sedation withmidazolam during fiberoptic bronchoscopy. J Bronchol Interv Pulmonol.2016;23(2):106-111.
17. Schlatter L, P?imlin E, Fehrke B, Meyer A, Tamm M, Stolz D. Propofolversus propofol plus hydrocodone for ?exible bronchoscopy: a randomisedstudy. Eur Respir J. 2011;38(3):529-537.
18. Tekin M, Özbay B, Tomak Y, Uzun K, Katı İ. Comparison of thecombination of propofol and alfentanil with diazepam in fiberopticbronchoscopic procedures Van Med J. 2006;13(1):9-12.
19. Stolz D, Kurer G, Meyer A, et al. Propofol versus combined sedation in?exible bronchoscopy: a randomised non-inferiority trial. Eur Respir J.2009;34(5):1024-1030.
20. Dreher M, Ekkernkamp E, Storre JH, Kabitz HJ, Windisch W. Sedationduring ?exible bronchoscopy in patients with pre-existing respiratoryfailure: midazolam versus midazolam plus alfentanil. Respiration.2010;79(4):307-314.
21. Crawford M, Pollock J, Anderson K, Glavin RJ, MacIntyre D, VernonD. Comparison of midazolam with propofol for sedation in outpatientbronchoscopy. Br J Anaesth. 1993;70(4):419-422.
22. Tsunezuka Y, Sato H, Tsukioka T, Nakamura Y, Watanabe Y. The role ofcodeine phosphate premedication in fibre-optic bronchoscopy underinsufficient local anaesthesia and midazolam sedation. Respir Med.1999;93(6):413-415.
23. Stolz D, Chhajed PN, Leuppi JD, Brutsche M, Pflimlin E, Tamm M. Coughsuppression during flexible bronchoscopy using combined sedation withmidazolam and hydrocodone: a randomised, double blind, placebocontrolled trial. Thorax. 2004;59(9):773-776.
24. Braga PC, Allegra L. Centrally acting opioid drugs. Raven Press: 1989.