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Physical therapy clinic therapeutic ultrasound equipment as a source for bacterial contamination

机译:物理治疗诊所的治疗超声设备可作为细菌污染的来源

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A procedure commonly used in physical therapy (PT) clinics is therapeutic ultrasound (US). This equipment and associated gel comes in contact with patient skin, potentially serving as a reservoir for bacteria. In this study, we sampled US heads, gel bottle tips and gel from nine outpatient PT clinics in Southeastern Tennessee. Samples were collected using sterile swabs. At the microbiology laboratory, these swabs were used to inoculate mannitol salt agar and CHROM-MRSA agar (for Staphylococcal species) and tryptic soy broth to determine non-specific bacterial contamination. US heads, gel bottle tips and gel had variable levels of contamination. Tips of gel bottles had the highest contamination, with 52.7% positive for non-specific bacterial contamination and 3.6% positive for methicillin-resistant Staphylococcus aureus (MRSA). Contamination of gel by non-specific bacteria was found in 14.5% of bottles sampled. US heads (35.5% of those sampled) had non-specific bacterial contamination, with no MRSA detected. Disinfecting US heads after initial swabbing resulted in removal of 90.9% of non-specific contamination. Gel storage at temperatures below 40 °C was found to encourage the growth of mesophilic bacteria. This study demonstrates the need for better cleaning and storage protocols for US heads and gel bottles in PT clinics.
机译:物理疗法(PT)诊所中常用的程序是治疗性超声(US)。该设备和相关的凝胶与患者的皮肤接触,有可能充当细菌的储存库。在这项研究中,我们从田纳西州东南部的9家门诊PT诊所取样了美国的头部,凝胶瓶头和凝胶。使用无菌拭子收集样品。在微生物实验室,这些拭子用于接种甘露醇盐琼脂和CHROM-MRSA琼脂(用于葡萄球菌)和胰蛋白酶大豆肉汤以确定非特异性细菌污染。美国瓶头,凝胶瓶头和凝胶的污染程度各不相同。胶瓶尖​​端的污染最高,非特异性细菌污染的阳性率为52.7%,耐甲氧西林的金黄色葡萄球菌(MRSA)的阳性率为3.6%。在14.5%的采样瓶中发现非特异性细菌对凝胶的污染。美国首领(占采样总数的35.5%)具有非特异性细菌污染,未检测到MRSA。初次擦拭后对美国头部进行消毒可去除90.9%的非特异性污染。发现在低于40°C的温度下保存凝胶会促进嗜温细菌的生长。这项研究表明,在PT诊所中,需要针对美式喷头和凝胶瓶更好的清洁和存储方案。

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