[Electrocardiographic diagnosis: when QRS is wide.]

Area of Science:

• Cardiology
• Emergency Medicine
• Electrocardiography

Background:

• Wide QRS complexes on an electrocardiogram (ECG) present a diagnostic challenge in emergency settings.
• Accurate differentiation is crucial for appropriate patient management and treatment.
• Existing diagnostic criteria require careful integration with clinical data for optimal accuracy.

Purpose of the Study:

• To review and present evidence-based criteria for the differential diagnosis of wide QRS complexes in emergency conditions.
• To highlight morphological ECG pathways aiding in rapid and accurate assessment.
• To provide a guide for clinicians in the emergency room for ECG interpretation.

Main Methods:

• Literature review of established and emerging criteria for wide QRS complex differentiation.
• Analysis of morphological patterns on ECGs associated with specific conditions.
• Integration of diagnostic criteria with patient anamnestic (historical) data.

Main Results:

• The differential diagnosis primarily includes ventricular pre-excitation, aberrant conduction, and ventricular beats.
• Specific ECG morphological criteria can significantly aid in distinguishing these conditions.
• Combining ECG findings with clinical data enhances diagnostic accuracy in emergency scenarios.

Conclusions:

• A systematic approach utilizing morphological ECG analysis and patient history is essential for diagnosing wide QRS complexes in emergencies.
• Recognizing specific ECG patterns facilitates correct assessment and timely intervention.
• This review provides practical criteria for emergency room physicians to improve ECG interpretation accuracy.