Hedelin H, Larsson L, Eddeland A, Pettersson S
Eur Urol. 1985;11(3):177-80. doi: 10.1159/000472485.
To study the factors that influence the frequency of unscheduled catheter changes, patients with long-term indwelling Foley catheters were followed up for 48 weeks. A marked interindividual difference in the need for unscheduled changes was noted. The amount and composition of the encrustations precipitated on the catheters and urine osmolality influenced the frequency of unscheduled catheter changes. There was no correlation between the time a catheter had been in situ and the amount of encrustations on catheters changed on schedule after various times in situ. This indicates that time does not govern the amount of encrustations accumulated.
为研究影响非计划更换导尿管频率的因素，对长期留置Foley导尿管的患者进行了48周的随访。结果发现，非计划更换导尿管的需求存在显著的个体差异。导管上沉淀的结痂量和成分以及尿渗透压会影响非计划更换导尿管的频率。导管在位时间与在不同在位时间后按计划更换的导管上的结痂量之间没有相关性。这表明时间并不决定结痂积累的量。
