Intravenous Potassium Chloride Burning Sensation
IV potassium chloride commonly causes a burning sensation due to local chemical irritation of the vein from the infused solution. [1] This irritation can progress to infusion-site phlebitis and related pain. [1][3]
Solution-Related Irritation Mechanisms
Potassium chloride injection is a concentrated electrolyte solution and is supplied at a defined pH that can irritate local tissue at the infusion site. [1] Higher local exposure from limited dilution can increase irritation of the venous endothelium and surrounding tissues. [1]
Vein Inflammation and Thrombophlebitis
Inflammation at the infusion site is reflected clinically as infusion site pain, irritation, and burning sensation. [1] Clinically significant phlebitis can present with severe burning pain when potassium chloride is infused through an IV access. [3]
Infusion Factors That Intensify Pain
The burning sensation is more likely when infusion rate increases local exposure at the catheter tip and vein wall. [1] Burning and irritation are also reported as infusion-site adverse effects across potassium chloride injection formulations. [1]
Catheter and Delivery-Location Problems
Malpositioned central venous catheter placement has been associated with potassium chloride–induced phlebitis and burning pain. [3] Extravasation or improper delivery into surrounding tissue increases local tissue irritation and pain. [3]
Clinical Implications
Infusion-site burning should prompt assessment of IV site patency and positioning. [1][3] Infusion-site thrombosis or phlebitis is recognized among potassium chloride injection adverse outcomes. [1]
References
If potassium chloride is causing burning, common management approaches focus on reducing local irritation by correcting delivery issues and ensuring appropriate dilution and infusion technique. [1][3]