Investigations performed and their result in patients with hemisensory syndromes
| Investigation | Number of patients with investigation | Number of abnormal investigations | Abnormalities of investigations | Diagnostic investigation findings |
|---|---|---|---|---|
| Data in parentheses are percentages. | ||||
| Blood tests | 34/34 (100) | 5/34 (15) | Mild iron defiency anaemia 2/34 (6) | None |
| Mild hypokalaemia 1/34 (3) | ||||
| Mild hypocalcaemia 1/34 (3) | ||||
| Transient creatine kinase increase 1/34 (3) | ||||
| CT of brain | 34/34 (100) | 4/34 (12) | Contralateral corona radiata hypodensity 1/34 (3) | Contralateral corona radiata hypodensity in 1/34 consistent with ischaemia |
| Ipsilateral temporal fossa arachnoid cyst 1/34 (3) | ||||
| Bilateral basal gangliar hypodensities 1/34 (3) | ||||
| Ipsilateral frontal lobe cavenous angioma 1/34 (3) | ||||
| MRI of brain | 34/34 (100) | 4/34 (12) | Contralateral corona radiata hyperintensity 1/34 (3) | Contralateral corona radiata hyperintensity in 1/34 consistent with ischaemia |
| Ipsilateral temporal fossa arachnoid cyst 1/34 (3) | ||||
| Bilateral basal gangliar hyperintensities 1/34 (3) | ||||
| Ipsilateral frontal lobe cavenous angioma 1/34 (3) | ||||
| Carotid ultrasonography | 34/34 (100) | 0/34 (0) | None | None |
| Transthoracic echocardiography | 29/34 (85) | 1/29 (3) | Mobile intra-atrial septum in 1/29 (3) | None |
| Transcranial Doppler ultrasonography | 28/34 (82) | 6/28 (21) | Positive bubble testing in 6/28 (21) suggesting a patent foramen ovale | None |
| Evoked potentials (visual and somatosensory) | 28/34 (82) | 0/28 (0) | None | None |
| CSF examination | 28/34 (82) | 0/28 (0) | None | None |
| EEG | 25/34 (74) | 0/34 (0) | None | None |
| Transoesophageal echocardiography | 2/34 (6) | 2/2 (100) | Identification of patent foramen ovale in 2/2 (100) | None |
| Nerve conduction studies | 2/34 (6) | 0/2 (0) | None | None |
| SPECT of brain | 1/34 (6) | 0/1 (0) | None | None |