Tafuro P, Colbourn D, Gurevich I, Schoch P, Wachs H, Krystofiak S, Cunha B A
J Hosp Infect. 1986 May;7(3):283-8. doi: 10.1016/0195-6701(86)90079-4.
This study was designed to compare blood cultures drawn simultaneously from a pulmonary artery line or arterial line (line) and a peripheral site by venepuncture (VP). Two or three cultures were obtained by VP and from a line during each febrile episode in 79 patients. Line blood cultures were falsely negative in 1.3% of cultures and VP blood cultures were falsely negative in 2.0%. Three point eight per cent of blood cultures drawn from lines were falsely positive (contaminated), and 1.7% of VP cultures were falsely positive. No significant correlation was found between falsely positive line cultures and a positive three-way tap culture, line in use for 4 days or more, insertion of line during an emergency. We recommend that in the critically ill patient an arterial or pulmonary artery line may be used for obtaining reliable cultures.
本研究旨在比较通过肺动脉导管或动脉导管（导管）与经静脉穿刺（VP）从外周部位同时采集的血培养结果。在79例患者的每次发热发作期间，通过VP和从导管采集两到三次培养物。导管血培养有1.3%为假阴性，VP血培养有2.0%为假阴性。从导管采集的血培养有3.8%为假阳性（污染），VP培养有1.7%为假阳性。在假阳性导管培养与三通管培养阳性、导管使用4天或更长时间、急诊期间插入导管之间未发现显著相关性。我们建议，对于危重症患者，可使用动脉或肺动脉导管来获取可靠的培养结果。
