Prolonged QT dispersion is associated with pediatric syncope

Area of Science:

• Cardiology
• Pediatrics
• Electrophysiology

Background:

• Syncope is a common clinical presentation in pediatric cardiology.
• Identifying reliable diagnostic markers for syncope type and recurrence risk is crucial for effective management.

Purpose of the Study:

• To investigate the association between QT dispersion and syncope in pediatric patients.
• To determine if QT dispersion can serve as a diagnostic marker for syncope type and recurrence risk.

Main Methods:

• A case-control study comparing 52 pediatric syncope patients with 50 healthy controls.
• Electrocardiographic (ECG) parameters, including QT dispersion (QTd) and corrected QT dispersion (QTcd), were evaluated.
• Clinical data, including age, gender, syncope history, and tilt test results, were collected.

Main Results:

• Patients with syncope exhibited significantly prolonged QTd and QTcd values compared to the control group (p < 0.001).
• QTd and QTcd values did not significantly differ between syncope subtypes or in relation to syncope recurrence or tilt test outcomes.
• Patient complaints improved following cardiologic evaluation and preventative advice.

Conclusions:

• Prolonged QT dispersion is significantly associated with pediatric syncope.
• QT dispersion may be a valuable diagnostic marker for identifying children with syncope.
• Emphasis on patient education and lifestyle modifications is important for syncope management, with potential for drug treatment in refractory cases.