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Electrocardiographic changes in cerebrovascular hemorrhage
Insights
Cerebrovascular hemorrhage, particularly in the frontal lobe, can cause specific electrocardiographic (ECG) abnormalities like QT prolongation. These changes may stem from altered autonomic nervous system tone affecting the heart.
Area of Science:
- Neurology
- Cardiology
- Radiology
Background:
- Cerebrovascular hemorrhage can lead to various clinical manifestations.
- Electrocardiographic (ECG) abnormalities are sometimes observed in patients with brain injuries.
Purpose of the Study:
- To describe electrocardiographic abnormalities associated with localized cerebrovascular hemorrhage.
- To correlate specific brain hemorrhage locations with distinct ECG findings.
Main Methods:
- Review of electrocardiographic findings in patients with cerebrovascular hemorrhage.
- Correlation of ECG abnormalities with computerized tomography (CT) scan findings to localize the hemorrhage.
Main Results:
- Frontal lobe hemorrhages are linked to QT prolongation and neurogenic T waves.
- Brain stem hemorrhages are associated with noncardiogenic pulmonary edema and atrial fibrillation.
Conclusions:
- Specific ECG abnormalities can indicate the location of cerebrovascular hemorrhage.
- Orbito-frontal lesions may influence cardiac autonomic tone, leading to ECG changes via the stellate ganglia.
Abstract:
The electrocardiographic abnormalities found in localized cerebrovascular hemorrhage which have been documented by computerized tomography (CT) scans are described. Frontal lobe hemorrhages are associated especially with the electrocardiographic abnormalities of QT prolongation and neurogenic T waves. Brain stem hemorrhage seems to be associated with noncardiogenic pulmonary edema, and sudden development of atrial fibrillation. It is proposed that the cause of ECG abnormalities in association with lesions in the vicinity of area 13 on the orbital surface of the frontal lobe, or around the circle of Willis, results from alterations in sympathetic and parasympathetic tone mediated by fibers from the orbito-frontal area to the heart via the stellate ganglia.
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