Stroke is the most significant perioperative risk for patients undergoing carotid endarterectomy (CEA). Patients are accepting a greatly increased short-term risk of stroke in return for a reduced risk over the subsequent years. The causes of perioperative stroke are multiple and include emboli, technical problems such as intimal flap, intraoperative cerebral ischaemia during clamping, and post...

Early Supported Discharge Trialists. Services for reducing duration of hospital care for acute stroke patients. QUESTION: In patients admitted to hospital with acute stroke, do early supported discharge (ESD) services accelerate return to home, improve patient outcomes, and reduce resource use?

Three different general approaches for calculating the electromagnetic fields at any point in space from a lightning return stroke, which is modelled as an extending linear antenna, are reviewed and compared. In the first approach, known as the dipole approach, the electric field is completely expressed in terms of the retarded current on the lightning channel and in the second approach the ele...