Chang Jeonghyun, Park Jeong Su, Park Sookja, Choi Byeonghoo, Yoon Nam Seop, Sung Heungsup, Kim Mi-Na
Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Republic of Korea.
Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Republic of Korea.
Diagn Microbiol Infect Dis. 2015 Feb;81(2):89-93. doi: 10.1016/j.diagmicrobio.2014.11.001. Epub 2014 Nov 7.
The BACTEC™ FX (BD, USA) has been recently upgraded to measure virtual blood volume (VV) in batches of 25 PLUS Aerobic/F bottles. VVs were compared with manually measured actual volumes (AVs). The mean AV was larger in anaerobic bottles: 2.6±1.9mL in 2995 Aerobic/F bottles and 3.3±1.8mL in 3053 Lytic/10 Anaerobic/F bottles (P<0.001). The VV of Aerobic/F bottles was 2.4±1.4mL, and there was a significant correlation between the VVs and AVs of each department (P<0.001). The potential positivity in aerobic bottles increased 1.2-fold with a 1-mL increase in the AV (P<0.001). AV and VV were consistently less than adequate. Although the proportional effect of volume on positivity can be proven only with the AV, VVs are a reliable substitute for AVs to monitor the overall blood volumes and provide feedback to the individual departments or locations.
BACTEC™ FX（美国BD公司）最近进行了升级，可批量测量25个以上的有氧/F瓶中的虚拟血容量（VV）。将虚拟血容量与手动测量的实际容量（AV）进行比较。厌氧瓶中的平均实际容量更大：2995个有氧/F瓶中的平均实际容量为2.6±1.9毫升，3053个溶菌/10厌氧/F瓶中的平均实际容量为3.3±1.8毫升（P<0.001）。有氧/F瓶的虚拟血容量为2.4±1.4毫升，各科室的虚拟血容量与实际容量之间存在显著相关性（P<0.001）。有氧瓶中的潜在阳性率随着实际容量每增加1毫升而增加1.2倍（P<0.001）。实际容量和虚拟血容量始终不足。虽然只有实际容量才能证明容量对阳性率的比例影响，但虚拟血容量是监测总体血容量并向各个科室或地点提供反馈的实际容量的可靠替代指标。
