Rate-dependent left bundle branch block caused by hyperkalaemia

Fransen, N. E.; Vos, Louwerens D.; Kesteren, H. A. M. van

doi:10.1007/s12471-015-0795-1

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Hence, it becomes necessary to treat the patient in the ED as soon as EKG changes are suspicious of hyperkalemia. Previous studies have reported rate-dependent LBBB, wherein the EKG did not show any changes at a lower rate; however, as the heart rate increased, atrial fibrillation with LBBB was seen in a patient with hyperkalemia [ 6 ]. As LBBB resolved in our patient after hemodialysis, and cardiac evaluation including exercise stress test was normal, LBBB can be attributed to hyperkalemia.…”

Section: Discussionmentioning

confidence: 99%

Transient Left Bundle Branch Block in the Setting of Hyperkalemia

Naz¹,

Kansara²,

Santillan³

et al. 2021

Cureus

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Hyperkalemia is a potentially life-threatening condition that can lead to sudden cardiac death. We report a case of transient left bundle branch block (LBBB) pattern on an electrocardiogram (EKG) secondary to hyperkalemia in a patient with a history of end-stage renal disease. A 48-year-old female presented to the emergency department (ED) with chief complaints of weakness and shortness of breath after a missed hemodialysis session. A 12-lead EKG in the ED showed the LBBB pattern with left axis deviation, prolonged PR interval, and peaked T-waves in the precordial leads. The initial serum potassium level was 8.5 mEq/L. EKG changes resolved after correcting the serum potassium level.

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Section: Discussionmentioning

confidence: 99%

Transient Left Bundle Branch Block in the Setting of Hyperkalemia

Naz¹,

Kansara²,

Santillan³

et al. 2021

Cureus

View full text Add to dashboard Cite

show abstract

“…Fransen et al [ 1 ] published a Heart Beat in this journal showing a case with rate-dependent left bundle branch block (LBBB) in a patient with serious hyperkalaemia. Critical appraisal of the ECGs, however, suggests that the hyperkalaemia by itself may be the explanatory mechanism of the LBBB rather than the increased heart rate.…”

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confidence: 99%