Objective Staphylococcus aureus with the ability of biofilm formation and the drug resistance acquisition is one of the most frequently isolated pathogens from chronic rhinosinusitis patients. Ultrasound as an alternative therapy is effectively able to kill the bacteria by cavitation in or on the bacterial cells and peroxide generation and hence improving antibiotic treatment efficacy. Results Staphylococcus aureus was detected in 4 and 6 out of 14 patients by phenotypic and qPCR assays, respectively. Four patients were completely resolved after pulsed ultrasound treatment. However, presence of the S. aureus was confirmed in three healthy controls by bacterial cultivation. Pulsed ultrasound have been quantitatively decreased the S. aureus population in chronic rhinosinusitis patients (p < 0.05). Further studies need to be investigated the effectiveness of pulsed ultrasound as an alternative course of CRS patient’s treatment.
Background and Objectives: Bacterial involvement in chronic rhinosinusitis (CRS) condition made it difficult to treat using available antibiotic therapy. Therapeutic ultrasound was investigated here to evaluate bacterial diversity and quantity before and after continuous/pulsed ultrasound strategy compared to control patients. Materials and Methods: Totally, 34 CRS patients were studied in three groups, including continuous ultrasound, pulsed ultrasound and control. Bacterial culture and identification were done before and after treatment. CT scan and questionnaire scores were recorded two times before and after intervention. Results: The most prevalent bacterial isolates were non-hemolytic Streptococci (34 patients), coagulase-negative Staphy- lococcus (33 patients), Gram-negative cocci (26 patients), Staphylococcus aureus (19 patients), Streptococcus pneumoniae (five patients) and Streptococcus pyogenes (five patients). Both continuous and pulsed ultrasound could significantly reduce the quantity of bacterial isolates after treatment. CT scan and questionnaire results support the effectiveness of therapeutic ultrasound. Conclusion: The quantity of clinically important bacteria was significantly reduced using ultrasound treatment and recov- ery of patients was supported by CT scan and questionnaire scores. Alternative therapeutic ultrasound could be an effective procedure in CRS patients.
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