Because potassium chloride solution is more irritating to the blood vessels, it often causes pain in the blood vessels after intravenous infusion. The reaction of the intima to potassium chloride can be improved by warming the fluid to a level close to body temperature during infusion. In this case, the potassium chloride infusion should be suspended, and if the person’s condition requires that potassium chloride is still needed, the potassium chloride infusion can be switched to a deep vein, or the concentration of potassium chloride infusion can be reduced. Diluting the potassium chloride with saline or glucose water can reduce the pain or slow down the rate of potassium chloride infusion. Once this has occurred, the inflammation of the intima can be reduced and the pain relieved by applying heat or the drug Xylitol, or the local symptoms can be treated by wet application of certain anti-inflammatory medications.