The effect of calcium gluconate in the treatment of hyperkalemia
Nalan Gokce Celebi Yamanoglu1, Adnan Yamanoglu2
1Department of Emergency Medicine, Izmir Bozyaka Training and Research Hospital, Izmir, Turkey.
Insights
Intravenous calcium gluconate effectively treated main rhythm disorders in hyperkalemia patients, but not nonrhythm ECG changes. This study clarifies calcium gluconate
Area of Science:
- Cardiology
- Emergency Medicine
- Clinical Pharmacology
Background:
- Intravenous (IV) calcium salts are standard for severe hyperkalemia cardio-protection.
- Current recommendations lack robust evidence, relying on anecdotal support.
- The efficacy of IV calcium gluconate in hyperkalemia treatment requires further investigation.
Purpose of the Study:
- To evaluate the effectiveness of IV calcium gluconate in treating hyperkalemia.
- To assess the impact of IV calcium gluconate on electrocardiogram (ECG) changes associated with hyperkalemia.
Main Methods:
- Prospective observational study of 111 hyperkalemia patients with ECG changes.
- ECG parameters were recorded before and after IV calcium gluconate administration.
- Statistical analysis included Wilcoxon and McNemar's tests for ECG parameter comparison.
Main Results:
- The mean potassium level was 7.1 ± 0.6 mmol/l.
- IV calcium gluconate showed no significant effect on 164 nonrhythm ECG disorders (P = 0.125).
- A statistically significant improvement (P < 0.004) was observed in 9 out of 79 main rhythm disorders.
Conclusions:
- IV calcium gluconate demonstrates limited effectiveness in treating main rhythm ECG disorders caused by hyperkalemia.
- The therapy was ineffective for nonrhythm ECG disorders associated with hyperkalemia.
- Calcium gluconate's utility may be restricted to specific hyperkalemia-induced rhythm disturbances.
Objectives:
Intravenous (IV) calcium salts are routinely recommended as a cardio-protective therapy in the emergency treatment of severe hyperkalemia. However, this recommendation is supported by a low level of evidence and is anecdotal. The aim of this study is to determine the effectiveness of IV Calcium (Ca) gluconate in the treatment of hyperkalemia.
Materials And Methods:
Patients with hyperkalemia and with the electrocardiogram (ECG) changes due to hyperkalemia over a 1 year period were included in this prospective observational study. Patients' ECGs were measured, before and after IV Ca-gluconate treatment and after normalization of potassium levels. Wilcoxon test and McNemar's test were used to compare the ECG parameters before and after Ca-gluconate therapy.
Results:
The mean potassium value of 111 patients who met the inclusion criteria was 7.1 ± 0.6 mmol/l. In this study, a total of 243 ECG pathology related to hyperkalemia, 79 of which included main rhythm disorders, and the remaining 164 were nonrhythm disorders in ECG parameters, were analyzed. No statistically significant changes were determined in patients' nonrhythm ECG disorders with IV Ca-gluconate treatment (P = 0.125). However, nine of the 79 main rhythm disorders due to hyperkalemia improved with calcium gluconate treatment and this change was statistically significant (P < 0.004).
Conclusion:
IV Ca-gluconate therapy was found to be effective, albeit to a limited degree, in main rhythm ECG disorders due to hyperkalemia, but it was not found to be effective in nonrhythm ECG disorders due to hyperkalemia. Therefore, Ca-gluconate may be effective only in the main rhythm disorders due to hyperkalemia.
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