Fluctuating Electrocardiographic Changes Predict Poor Outcomes After Acute Subarachnoid Hemorrhage

Area of Science:

• Neurology
• Cardiology
• Critical Care Medicine

Background:

• Electrocardiogram (ECG) abnormalities are common after aneurysmal subarachnoid hemorrhage (SAH).
• Cardiac dysfunction and ECG changes are linked to worse patient outcomes.
• Identifying high-risk patients with SAH is crucial for timely intervention.

Purpose of the Study:

• To investigate the relationship between clinical markers, cardiac abnormalities, and clinical outcomes in patients with aneurysmal SAH.
• To determine the prognostic significance of dynamic ECG changes following SAH.

Main Methods:

• Prospective study of 20 patients admitted within 48 hours of aneurysmal SAH.
• Serial ECGs were performed: pre-surgery, during surgery, and post-surgery.
• Clinical markers, cardiac abnormalities, and outcomes were assessed.

Main Results:

• 65% of SAH patients exhibited abnormal ECG changes.
• Dynamic (fluctuating) ECG abnormalities were observed in 4 patients, all experiencing poor outcomes (100%).
• Fixed ECG abnormalities were associated with better outcomes compared to dynamic changes (33.3% poor outcome).

Conclusions:

• Dynamic ECG changes represent a novel and significant predictor of poor prognosis in aneurysmal SAH.
• The variability of ECG abnormalities may play a critical role in SAH-related cardiac complications.
• Further validation in larger cohorts is needed to confirm the clinical utility of monitoring dynamic ECG changes.