Document Detail

Hyperkalaemia and haemodialysis patients: eletrocardiographic changes.
MedLine Citation:
PMID:  19160884     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Patients with end-stage renal disease (ESRD) present hydro-electrolytic alterations due to the lack of adequate regulation of the internal medium. Of these alterations hyperkalaemia is frequent and produce neuromuscular symptoms, electrocardiographic changes and arrhythmias. Literature affirms that patients with ESRD present less prominent hyperkalaemia-related electrocardiographic changes than those patients with normal renal function. OBJECTIVES: To evaluate electrocardiographic alterations related with potassium in our ESRD patients and to compare the obtained results with those previously reported. METHODS: Descriptive, cross-sectional and prospective study in hospital haemodialysis (HD) patients. Pre- and post-HD serum potassium and other electrolyte concentrations were measured, and simultaneous 12-lead electrocardiogram (ECG) obtained at the first session of the week. An expert evaluated all ECG's. RESULTS: 39 patients were included in the study, 58.9% were women and 41.1% men, with a mean age 67.35 years (24-89). Serum potassium pre-HD range was 2.8 to 7.4 mEq/l (mean 5.07 mEq/L), 29.4% of the sample presented levels > or = 5.5 mEq/l and the most frequent alteration in the ECG was high and peaked T waves in leads V2 to V4. In the hyperkalaemia cases, the mean elevation of T wave was 7 mm. In 2 hyperkalaemia patients there was no elevation of T wave: one T wave was negative (K+ = 6 mEq/L) and another one stayed normal (K+ = 5.6 mEq/L). CONCLUSIONS: The ECG continues to be a good tool of early hyperkalaemia detection, contributing to estimating severity. Patients with ESRD present electrocardiographic alterations similar to the healthy population.
José Luis Cobo Sánchez; Ana Rosa Alconero Camarero; María Casaus Pérez; Ma Angeles Maza Sota; Camino Villa Llamazares; Carmen Hiquera Roldán; Raquel Menezo Viadero; Rosa Alonso Nates
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Publication Detail:
Type:  Journal Article; Validation Studies    
Journal Detail:
Title:  Journal of renal care     Volume:  33     ISSN:  1755-6678     ISO Abbreviation:  -     Publication Date:    2007 Jul-Sep
Date Detail:
Created Date:  2009-01-23     Completed Date:  2009-02-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101392167     Medline TA:  J Ren Care     Country:  France    
Other Details:
Languages:  eng     Pagination:  124-9     Citation Subset:  N    
Hemodialysis Unit, Hospital Universitario Marqués de Valdecilla, Santander, Spain.
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MeSH Terms
Aged, 80 and over
Arrhythmias, Cardiac / diagnosis,  etiology
Calcium / blood
Creatinine / blood
Cross-Sectional Studies
Early Diagnosis
Electrocardiography / methods*,  standards
Hyperkalemia / blood,  diagnosis*,  etiology
Kidney Failure, Chronic / complications*,  therapy
Middle Aged
Nursing Assessment / methods
Nursing Evaluation Research
Potassium / blood
Prospective Studies
Renal Dialysis* / methods
Severity of Illness Index
Sodium / blood
Urea / blood
Reg. No./Substance:
57-13-6/Urea; 60-27-5/Creatinine; 7440-09-7/Potassium; 7440-23-5/Sodium; 7440-70-2/Calcium

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