• Mihaela C Micu, Violeta M Vlad, Sorana D Bolboacă, Mihaela Cârlig, Gyorgy I Bodizs, Alina G Duţu, and Daniela Fodor.
• Rheumatology Division, Rehabilitation Clinical Hospital Cluj-Napoca, Romania. mcmicu@yahoo.com.
• Med Ultrason. 2014 Sep 1;16(3):214-21.

BackgroundIn daily rheumatology clinical practice, routine interventional musculoskeletal ultrasound (MSUS) guided maneuvers such as aspiration, intraarticular or periarticular drug injections require efficient cleaning and disinfection methods for both transducer and patient's skin.AimTo study the efficacy of probe and skin disinfection measures after using simple protocols, to identify the prevalence of septic and other drug related side effects after MSUS guided interventions and to quantify the total procedure time.Material And MethodsRecruitment of consecutive patients with different joint/ periarticular MSUS guided interventions was made in 3 medical centers. Bacterial load was determined on the transducers footprint after dry cleaning with the removal of any gel trace and on patients' skin after rigorous skin disinfection with either Bethadine or alcohol 70° and Bethadine. Non-sterile gel was used as an ultrasound transmission medium. The time spent for some of the invasive procedures was quantified.ResultsNine hundred and ninety eight MSUS guided interventional maneuvers were performed in 945 patients with inflammatory and degenerative musculoskeletal pathologies. Staphylococcus epidermidis was identified in 13.33% cases of the skin bacterial load analysis and in 37.50% cases of the footprint analysis. In two patients pathogenetic germs were detected on the skin. No septic post-procedural complications were reported. In 0.6% of the cohort other side effects occurred: aseptic osteonecrosis, skin depigmentation at injection site and iatrogenic microcristaline reactions. The median time frame dedicated to the intervention was 6 minutes.ConclusionRigorous transducer dry cleaning and Bethadine / Bethadine and alcohol 70° skin disinfection are efficacious methods. The risk for septic complications and other drug related side effects related to MSUS guided injections is very low in this context. A correct injection technique must accompany the previous requests. Rapid and safe interventional maneuvers reduce the risks and control the costs of the healthcare system.

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