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Specific cardiological evaluation after focal cerebral ischemia
C R Hornig1, W Haberbosch, C Lammers
1Department of Neurology, Justus Liebig University, Giessen, Germany.
Insights
Identifying cardiogenic brain embolism in TIA/stroke patients requires targeted echocardiography and Holter-ECG. This helps pinpoint patients needing further cardiac investigation for reliable diagnosis.
Area of Science:
- Neurology
- Cardiology
- Diagnostic Imaging
Background:
- Acute focal brain ischemia, including transient ischemic attack (TIA) and stroke, presents diagnostic challenges.
- Identifying the source of embolism is crucial for effective treatment and secondary prevention.
- Cardiogenic sources are a significant, yet sometimes elusive, cause of brain embolism.
Purpose of the Study:
- To define a specific subgroup of TIA/stroke patients who would benefit from transthoracic and transesophageal echocardiography or Holter-electrocardiography.
- To reliably identify patients with cardiogenic brain embolism.
Main Methods:
- A standardized diagnostic protocol was applied to 300 consecutive patients with acute focal brain ischemia.
- Evaluations included clinical examination by a cardiologist, routine ECG, Holter-ECG, transthoracic echocardiography, and transesophageal echocardiography.
- Etiological evaluation focused on identifying potential cardiac sources of embolism.
Main Results:
- Out of 300 patients, 188 had a potential cardiac source of embolism.
- Echocardiography identified a source in 163 patients; Holter-ECG identified a source in 10 patients.
- Cardiogenic brain embolism was considered definite or possible in 136 patients, with 84.6% having competing etiologies like atherosclerosis.
Conclusions:
- Transthoracic and transesophageal echocardiography are essential for diagnosing cardiogenic brain embolism in 89% of patients with specific clinical or ECG findings.
- Holter-electrocardiography is indicated in 54% of these patients.
- Targeted use of these diagnostic tools can reliably identify patients with cardiogenic brain embolism.
Abstract:
Purpose of this study was to define a subgroup of TIA/stroke patients who should be examined by transthoracal and transesophageal echocardiography or Holter-electrocardiography to identify those with cardiogenic brain embolism reliably; 300 consecutive patients with acute focal brain ischemia underwent a standardized diagnostic protocol for the evaluation of the etiology including, clinical examination by a cardiologist and routine electrocardiography, Holter-electrocardiography, transthoracal and transesophageal echocardiography. 188 patients had a potential cardiac source of embolism. In particular echocardiography was diagnostic in 163 patients, and Holter-electrocardiography 10; 159 of these 188 patients (84.6%) had competitive etiologies, predominantly large vessel atherosclerosis. In 136 patients cardiogenic brain embolism was assumed as quite definite or possible. To identify these patients reliably, transthoracal and transesophageal echocardiography would have been necessary in 89% of the entire group of patients (all with clinically cardiological abnormalities, pathological routine ECG, without vascular risk factors, or no atherosclerosis in duplex sonography), and Holter-electrocardiography in 54%.