Efficiency evaluation and safety monitoring of tailored rapid potassium supplementation strategy for fatal severe hypokalemia

Du,Yu; Mou,Yi; Liu,Jin

doi:10.3892/etm.2019.7292

Efficiency evaluation and safety monitoring of tailored rapid potassium supplementation strategy for fatal severe hypokalemia

Authors:
- Yu Du
- Yi Mou
- Jin Liu
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Affiliations: Emergency Department and Intensive Care Unit, West China School of Public Health, No. 4 West China Teaching Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China, Geroscience and Chronic Disease Department, The 8th Municipal People's Hospital, Chengdu, Sichuan 610083, P.R. China, Department of Anesthesia and Intensive Care, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
Published online on: February 21, 2019 https://doi.org/10.3892/etm.2019.7292
Pages: 3222-3232

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Abstract

Stringent regulations have been established for the intravenous administration of potassium to avoid hyperkalemia in the clinic. The standard approach, however, often does not work well for treating severe hypokalemia. In the present study, a rabbit model of hyperkalemia was used to develop an tailored rapid potassium supplementation strategy and the effectiveness and safety of this new strategy were assessed. A total of 20 rabbits with induced severe hypokalemia were randomly divided into two equal treatment groups. All of the animals were injected with 3% KCl through the auricular marginal veins by a micro‑injection pump; the target serum potassium concentration was 4 mmol/l. The conventional treatment group was administered a continued potassium infusion at the standard infusion rate of 0.4 mmol/kg/h. The tailored rapid supplementation group was treated in two steps: First, a loading dose of potassium was rapidly injected for 5 min and this step was repeated until the serum potassium concentration was increased to 3.5 mmol/l. After this increase in serum potassium concentration, a sustained potassium infusion at a constant dose was performed. Electrocardiogram, blood pressure, respiratory rate, serum potassium concentration, urine volume and vital signs were monitored in real‑time. No hyperkalemia occurred in any of the two the groups. However, compared with the conventional group, the tailored rapid group had a significantly shorter duration of potassium infusion and arrhythmia, and a higher survival rate. In conclusion, these results demonstrate that the tailored rapid potassium supplementation strategy shortened the time of hypokalemia and is a safe and better treatment option to remedy life‑threatening arrhythmia caused by severe hypokalemia with a high success rate.

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