Method : divide randomly the 150 patients with phlebitis caused by extravasation during intravenous infusion into observation group and reference group , each with 75 instances , and the reference group was applied with hydropathic compress using 50 % magnesium sulfate and the observation group externally applied with fresh potatoes slice .
This is the therapeutic method for eliminating the undigested food , potent excessive heat and fluid by the application of potent or mild purgatives , generally classified into purgation with cold natured drugs , that with warm natured drugs , that with lubricant natured drugs and hydropathic therapy .