Syncope after Influenza Virus Infection

Area of Science:

• Neurology
• Infectious Diseases
• Cardiology

Background:

• Influenza, a viral respiratory illness, can lead to various complications.
• While respiratory issues like pneumonia are common, rare neurological complications such as syncope are also noted.
• Understanding syncope post-influenza is crucial for comprehensive patient care.

Purpose of the Study:

• To investigate the prevalence and characteristics of syncope following influenza infection.
• To explore potential pathomechanisms contributing to post-influenza syncope.
• To identify factors associated with syncope in influenza patients.

Main Methods:

• Retrospective analysis of patients diagnosed with influenza.
• Data collection on syncope occurrence, preceding symptoms, and patient characteristics.
• Correlation analysis between syncope duration and clinical indicators like fever and orthostatic blood pressure changes.

Main Results:

• 2.2% of influenza patients experienced syncope.
• Frequent dizziness preceded syncope in affected patients.
• Prolonged loss of consciousness was associated with high fever and positive orthostatic blood pressure drop.

Conclusions:

• Syncope is a rare but observed complication of influenza.
• Dizziness is a common prodromal symptom.
• Fever and orthostatic hypotension may influence the severity of syncope in influenza patients.