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Background: Bronchoalveolar lavage (BAL) is a widely performed diagnostic and research procedure. Objectives: The aim of the present study was to standardize the method of retrieving BAL in our institution through comparing three methods of BAL retrieval regarding efficacy and safety. Methods: A total of 60 adult patients were randomly divided according to the method for retrieving BAL infusate into three groups, of 20 patients each. These are by using gentle hand suction into sterile syringe (Group I), using gentle syringe suction into a fluid trap (Group II), or using gentle suction by aspirator, collecting the lavage specimen into a collection trap (Group III). Results: No statistical difference was noted between groups regarding age, sex, presenting symptoms, anesthesia, patient position, introduction site, postprocedural complications, and total cell count in the retrieved fluid. The volume of the recovered fluid using the method in group III was significantly higher than that of the method used in group II (P=0.001). Although the volume of the recovered fluid by the method in group III was apparently higher than that of the method in group I, and that for the method in group I was apparently higher than that in group II, both lacked significance (P=0.188 and 0.066, respectively). Conclusion: All studied methods of retrieving BAL infusate are safe. Using an aspirator into a fluid trap is superior to using syringe suction into a fluid trap in retrieving more voluminous BAL infusate.

Comparative study between different methods of aliquots suction during bronchoalveolar lavage