Single use and conventional bronchoscopes for Broncho alveolar lavage (BAL) in research: a comparative study (NCT 02515591)

BMC Pulmonary Medicine

Research Article

Stephen B Gordon¹  Jesús Reiné²  Jessica Owugha²  Daniela Mulari Ferreira²  Elena Mitsi²  Seher Raza Zaidi³  Andrea M. Collins³  Jamie Rylance³  Angela D Wright⁴  Kayleigh Davies⁵  Amitava Ganguli⁵  Richard Fitzgerald⁵ 

[1] Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi;Respiratory Infection Group, Liverpool School of Tropical Medicine, Pembroke Place, L3 5QA, Liverpool, UK;Respiratory Infection Group, Liverpool School of Tropical Medicine, Pembroke Place, L3 5QA, Liverpool, UK;Respiratory Research Group, Royal Liverpool and Broadgreen University Hospital NHS Trust, L7 8XP, Liverpool, UK;Respiratory Infection Group, Liverpool School of Tropical Medicine, Pembroke Place, L3 5QA, Liverpool, UK;Respiratory Research Group, Royal Liverpool and Broadgreen University Hospital NHS Trust, L7 8XP, Liverpool, UK;Clinical Research Network, Northwest Coast, Liverpool, UK;Respiratory Research Group, Royal Liverpool and Broadgreen University Hospital NHS Trust, L7 8XP, Liverpool, UK;

关键词: Research Bronchoscopy;    Bronchoalveolar Lavage;    Single use bronchoscopes;    Bronchoscopy;    Bronchoalveolar lavage fluid;    Lung diseases;   

DOI  :  10.1186/s12890-017-0421-7

 received in 2017-01-14, accepted in 2017-04-25,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundBroncho alveolar lavage (BAL) is widely used for investigative research to study innate, cellular and humoral immune responses, and in early phase drug trials. Conventional (multiple use) flexible bronchoscopes have time and monetary costs associated with cleaning, and carries a small risk of cross infection. Single use bronchoscopes may provide an alternative, but have not been evaluated in this context.MethodsHealthy volunteers underwent bronchoscopy at a day-case clinical research unit using the Ambu® aScopeTM single-use flexible intubation bronchoscope. Broncho alveolar lavage was performed from a sub segmental bronchus within the right middle lobe; a total of 200 ml of warmed normal saline was instilled then aspirated using handheld suction. BAL volume yield, cell yield and viability were recorded.ResultsTen volunteers, (mean age 23 years, six male) participated. Bronchoscopies were carried out by one of two senior bronchoscopists, experienced in the technique of obtaining BAL for research purposes. The results were compared to 50 (mean age 23, 14 male) procedures performed using the conventional scope by the same two bronchoscopists. The total volume yield was significantly higher in the disposable group median 152 ml (IQR 141–166 ml) as compared to conventional 124 ml (110–135 ml), p = <0.01. The total cell yield and viability were similar in both groups, with no significant differences.ConclusionsWith single use bronchoscopes, we achieved a larger BAL volume yield than conventional bronchoscopes, with comparable cell yield and viability. Better volume yields can potentially reduce post procedure side effects such as pleuritic chest pain and cough. The risk of cross infection can be eliminated, providing reassurance to researchers and participants. Reduced maintenance requirements can be cost effective. These could potentially be used for early phase drug development studies.Trial registrationThis trial was registered prospectively in July 2015 with the National Clinical Trials register, with the following registration number assigned: NCT 02515591.

【 授权许可】

CC BY   
© The Author(s). 2017