24 h and prolonged ambulatory ECG recording in patients with ventricular ectopy: Maybe 24 h are not enough?

Area of Science:

• Cardiology
• Electrophysiology
• Medical Diagnostics

Background:

• Assessing arrhythmic risk in patients with ventricular ectopy and cardiovascular risk factors or coronary heart disease (CHD) history.
• Evaluating the diagnostic accuracy of standard 24-hour ambulatory ECG (AECG) recordings.
• Investigating the potential underestimation of arrhythmic events by short-term ECG monitoring.

Discussion:

• Significant discrepancies exist between 24-hour AECG findings and 6-day recordings for ventricular ectopy parameters.
• Extended AECG duration is crucial for accurately detecting non-sustained ventricular tachycardia (NSVT), with sensitivity increasing significantly up to 120 hours.
• Findings are consistent across patient groups with cardiovascular risk factors and those with a history of CHD.

Key Insights:

• Standard 24-hour AECG significantly underestimates the risk of ventricular arrhythmias in at-risk populations.
• Prolonged AECG monitoring (up to 6 days) substantially enhances the detection of premature ventricular contractions (PVCs) and NSVT.
• Sensitivity for NSVT detection increases from 18% at 24 hours to 82% at 120 hours.

Outlook:

• Prolonged AECG offers improved risk assessment for ventricular arrhythmias in patients with cardiovascular risk factors or CHD.
• Further cost-benefit analyses are needed to determine optimal AECG duration and patient selection for extended monitoring.
• Future research should focus on refining diagnostic criteria and identifying specific patient subgroups that benefit most from prolonged AECG.