Haemorrhagic complication following percutaneous transluminal angioplasty for carotid stenosis

We report 2 cases with haemorrhagic complications following percutaneous tr ansluminal angioplasty (PTA) for carotid stenosis. Computed tomography (CT) scanning of these cases demonstrated diffuse subarachnoid haemorrhage in 1 case. and intracerebral haemorrhage in the other case on the next day afte r PTA. In the latter case, we measured cerebral blood flow velocity and mea n transit time with transcranial doppler (TCD) and dynamic CT scan, which d emonstrated remarkable increases in the blood flow velocity and peak height , respectively. From these results, postoperative hyperperfusion was sugges ted to have caused haemorrhagic complications.