目的:这项研究调查了适当的放血前指导对患者意识到需要快速,他们在放血时的禁食状态,以及特定生化分析物和指标的测量。
方法:在预约他们的放血预约时,两百名门诊病人,在广泛的预先存在的医疗条件下,被招募并随机分配到对照组或干预组。对照组没有收到任何指示,而干预组在任命前被口头指示禁食12小时。从参与者收集血清样本,以量化常见的生化分析物和血清指标,其中一些已知受禁食状态的影响,如甘油三酯和血脂指数。在同一个约会中,参与者完成了一项调查,评估他们对,和坚持,禁食要求。
结果:在干预组中,99%的人回答说他们在放血前禁食16%的控制。受试者表示,他们在51%的干预组和7%的对照组中禁食12小时。钾和总胆红素的中位数浓度具有统计学意义,但不是临床上的,明显不同。在研究中,干预组的1例患者被发现有血脂样本.
结论:没有说明,似乎很少有患者会在采血前适当地禁食。这项研究表明,大多数患者回忆并遵守有关禁食的口头指示。尽管对照组中的许多人表示他们并不快,甘油三酯浓度和血脂与干预组没有显着差异,和生化分析似乎不受空腹状态的影响。
This study investigated the effect of appropriate pre-phlebotomy instructions on patients\' awareness of the need to fast, their fasting status at phlebotomy, and the measurement of specific biochemical analytes and indices.
While booking their phlebotomy appointments, two-hundred outpatients, with a wide range of pre-existing medical conditions, were recruited and randomly assigned to either control or intervention groups. The control group received no instructions while the intervention group was verbally instructed to fast for precisely 12 h prior to their appointment. Serum samples were collected from participants to quantify common biochemical analytes and serum indices, some of which were known to be influenced by fasting status, such as triglyceride and the lipaemic index. At the same appointment, participants completed a survey assessing their perception of, and adherence to, fasting requirements.
In the intervention group, 99% responded that they had fasted before phlebotomy vs. 16% of controls. Subjects stated they fasted for 12 h in 51% of the intervention group and 7% of the controls. Median concentrations for potassium and total bilirubin were statistically, but not clinically, significantly different. In the study, a single patient in the intervention group was found to have a lipaemic sample.
Without instruction, it appears few patients will fast appropriately prior to blood collection. This study suggests that most patients recall and adhere to verbal instructions regarding fasting. Though many in the control group stated they did not fast, triglyceride concentration and lipaemia were not significantly different from the intervention group, and biochemical analyses appear unaffected by fasting status.