Ecg signs of hyperkalemia9/22/2023 Quantitative assessments of T-wave amplitude corroborated subjective assessments of T-wave peaking however, no diagnostic threshold could be established. The electrocardiogram was insensitive for diagnosing hyperkalemia. Common medications included β blockers, insulin, and aspirin 80% had potassium <7.2. Results: Ninety patients met criteria two thirds were older than 65, and 48% presented with renal failure. Coincident, baseline, and follow-up electrocardiograms were examined for quantitative and qualitative changes in the QRS and T waves as well as the official cardiology readings. Potassium concentrations were documented along with other electrolytes, pH, creatinine, and biomarkers of cardiac injury. Data were abstracted regarding comorbid diagnoses, medications, and treatment. Inclusion criteria were potassium ≥6 with a concurrent electrocardiogram. In a prospective series, 46% of patients with hyperkalemia were noted to have electrocardiographic changes, but no clear criteria were presented.ĭesign, setting, participants, & measurements: Charts were reviewed for patients who were admitted to a community-based hospital with a diagnosis of hyperkalemia. Case reports suggest patients with renal insufficiency may have no electrocardiographic changes despite markedly elevated serum potassium. Background and objectives: Experimentally elevated potassium causes a clear pattern of electrocardiographic changes, but, clinically, the reliability of this pattern is unclear.
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