Challenges of ECG monitoring and ECG interpretation in dialysis units

Area of Science:

• Cardiology
• Nephrology
• Biomedical Engineering

Background:

• Patients undergoing hemodialysis (HD) exhibit high cardiovascular morbidity and mortality.
• Electrocardiography (ECG) is routinely used in dialysis units but interpretation is complicated by fluid and electrolyte fluctuations.
• Arrhythmias and ECG artifacts are common during HD, posing diagnostic challenges.

Purpose of the Study:

• To explore the utility of ECG monitoring during hemodialysis.
• To investigate the impact of HD on ECG parameters and arrhythmias.
• To assess the potential of advanced ECG analysis for risk stratification in HD patients.

Main Methods:

• Review of studies employing conventional and advanced ECG analyses in patients on hemodialysis.
• Examination of ECG morphologies, intervals, repolarization descriptors, and heart rate variability indices.
• Analysis of challenges in ECG interpretation related to fluid and electrolyte status during HD.

Main Results:

• Fluid and electrolyte changes significantly affect ECG parameters during hemodialysis.
• Dialysis-related artifacts can mimic arrhythmias, complicating interpretation.
• Advanced ECG analyses have been used to study the impact of HD on specific ECG markers.

Conclusions:

• ECG interpretation during hemodialysis requires careful consideration of the timing relative to the dialysis session.
• Despite challenges, ECG monitoring during dialysis holds potential for clinical utility.
• Further research into advanced ECG monitoring during HD may yield valuable diagnostic and risk stratification tools.