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Letters |

Potassium Levels After Acute Myocardial Infarction

R. Brooks Robey, MD
JAMA. 2012;307(15):1578-1580. doi:10.1001/jama.2012.486.
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To the Editor: Dr Goyal and colleagues1 reconfirmed poorer outcomes in patients with dyskalemia presenting with AMI. Although the authors correctly suggested that routine potassium supplementation is unwarranted in this setting, I believe that the clinical applicability of their findings and their implications for practice are limited.

The authors of the study1 and the accompanying editorial2 overstated potassium supplementation guidance in the setting of AMI.35 The guidelines from the American College of Cardiology and the American Heart Association4 address potassium only in the context of angiotensin-aldosterone axis antagonism and refractory or recurrent ventricular dysrhythmias. Routine potassium supplementation was not advised. An industry-sponsored conference report3 was referenced, which did not recommend routine potassium supplementation. Additionally cited were generic recommendations for the maintenance of higher serum potassium levels5 based on a nonrigorous analysis of favorable epidemiological associations with both higher dietary potassium intake and serum potassium levels. The independent contributions of potassium levels and pharmacological interventions that influence potassium homeostasis were not fully considered. Taken together, these recommendations seem too weak to support routine potassium supplementation in the setting of AMI.

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April 18, 2012
Andreas Perren, MD; Marco Previsdomini, MD; Karim Bendjelid, MD, PhD
JAMA. 2012;307(15):1578-1580. doi:10.1001/jama.2012.485.
April 18, 2012
Abhinav Goyal, MD, MHS; John A. Spertus, MD, MPH; Mikhail Kosiborod, MD
JAMA. 2012;307(15):1578-1580. doi:10.1001/jama.2012.487.
April 18, 2012
Benjamin M. Scirica, MD, MPH; David A. Morrow, MD, MPH
JAMA. 2012;307(15):1578-1580. doi:10.1001/jama.2012.488.
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