Bruce A W, Sira S S, Clark A F, Awad S A
Can Med Assoc J. 1974 Aug 3;111(3):238-9 passim.
Catheter encrustation was studied in a group of long-stay hospital patients using both latex and silicone catheters. Moisture accounted for 80% by weight of the encrusted material with both catheters. Of the dry weight 90% was composed of protein, calcium, phosphorus, magnesium and uric acid. No relationship was found between the amounts of these substances in the urine and in the encrusted material. High levels of calcium, phosphorus and magnesium were found in the encrusted material from patients infected with Proteus organisms. No direct relationship was found between the duration of catheter drainage and the degree of encrustation, and there was a variation in patient susceptibility to encrustation irrespective of the catheter material. There was significantly less encrustation associated with silicone catheters.
在一组长期住院患者中，对使用乳胶导管和硅胶导管的患者进行了导管结壳情况研究。两种导管结壳物质的重量中，水分占80%。干重的90%由蛋白质、钙、磷、镁和尿酸组成。尿液中这些物质的含量与结壳物质中的含量之间未发现相关性。感染变形杆菌的患者的结壳物质中发现钙、磷和镁含量很高。未发现导管引流持续时间与结壳程度之间存在直接关系，并且无论导管材料如何，患者对结壳的易感性存在差异。与硅胶导管相关的结壳明显较少。
