Throm R, Specter S, Strauss R, Friedman H
J Clin Microbiol. 1977 Sep;6(3):271-3. doi: 10.1128/jcm.6.3.271-273.1977.
An apparatus capable of rapidly detecting changes in electrical impedance was utilized for the continuous monitoring of bacterial growth in routine urine specimens in a clinical laboratory. In a trial study, 200 clinical specimens analyzed by the electrical impedance method resulted in an average detection time of 2.5 h for 41 clinically significant specimens, whereas conventional methods for bacterial isolation required overnight culture. Those specimens positive by the electrical impedance monitoring but negative by conventional bacteriological methods accounted for less than 2% of the total number of positive specimens, whereas electrical impedance-negative but conventional culture-positive specimens accounted for ca. 4%. Electrical impedance apparatus in clinical microbiology laboratories could provide rapid screening of clinical urine specimens as well as accurate detection of bacterial growth.
一种能够快速检测电阻抗变化的仪器被用于临床实验室对常规尿液标本中细菌生长的连续监测。在一项试验研究中，通过电阻抗法分析的200份临床标本中，41份具有临床意义的标本平均检测时间为2.5小时，而传统的细菌分离方法需要过夜培养。那些通过电阻抗监测呈阳性但传统细菌学方法呈阴性的标本占阳性标本总数的不到2%，而电阻抗阴性但传统培养阳性的标本约占4%。临床微生物实验室中的电阻抗仪器可以对临床尿液标本进行快速筛查，并能准确检测细菌生长。
