1. Introduction
thrombophlebitis, traumas, phlebitis
THROMBOPHLEBITIS, LUNG INFECTION, PHLEBITIS
To clarify the effect of catheter indwelling depth on the occurrence of thrombophlebitis, a total of 339 hospitalized patients were randomly enrolled and divided by the catheter indwelling depth into 2 groups. Then the effect of indwelling depth on thrombophlebitis was analyzed, and the independent influence factors on the occurrence of thrombophlebitis were clarified. There were 49 cases of thrombophlebitis, including 8 tumor-bearing patients and 41 patients with lung infection. Thirteen of the 135 patients with indwelling depth of 1 cm, and 36 of the 204 patients with indwelling depth of 1.9 cm suffered thrombophlebitis. The relationship between incidence rate of thrombophlebitis and clinicopathological parameters was analyzed. It was found the incidence of thrombophlebitis was significantly correlated with males (XIn modern medical practice, peripheral intravenous catheters (PIVC) is widely applied in in-hospital and outpatient services.The mechanism of phlebitis is believed to be a result from multifactor effects on venous walls, including chemical irritation, bacterial pollution, and machinery traumas. Chemical irritation often occurs after the infusion of vesicular agent or irritating solutions, or solutions related to potential endothelial injuries during peripheral catheter administration. Bacterial phlebitis is usually induced by extraluminal pollution (from skin floras). Mechanical damages often occur after inappropriate fixation of catheters, or insertion of a large catheter into venules, and the subsequent friction of the catheter on vein walls as well as endothelial injury.