Assessment of cardiac function in syncopal children without organic causes

Area of Science:

• Pediatric Cardiology
• Cardiovascular Imaging
• Diagnostic Medicine

Background:

• Syncope is a frequent issue in pediatric populations.
• Many syncope cases lack identifiable underlying organic causes.

Purpose of the Study:

• To determine factors influencing syncope severity using tissue Doppler imaging (TDI).
• Investigate the role of diastolic function in pediatric syncope.

Main Methods:

• Retrospective analysis of 61 pediatric syncope patients.
• Echocardiography with a focus on TDI parameters (E/E').
• Head-up tilt test (HUT) used for severe events; comparison of HUT positive/negative and ECG findings.

Main Results:

• Decreased medial E/E' and lateral E/E' were associated with severe syncope.
• Significant differences in lateral E/E' were observed between groups undergoing and not undergoing HUT.
• Left ventricular diastolic deterioration indicated by TDI may contribute to hypoperfusion and syncope.

Conclusions:

• Reduced medial E/E' and lateral E/E' indicate severe syncope in children.
• Left ventricular diastolic dysfunction can lead to hypoperfusion and increased syncope severity/frequency.
• TDI via echocardiography can predict syncope recurrence and severity in pediatric patients.