Brain death is clinically diagnosed by verification of the absence of brain stem reflexes, motor responses, and the ventilatory drive.1 In some circumstances, ancillary tests are necessary to confirm the diagnosis of brain death, especially when there is uncertainty about the reliability of parts of the neurologic examination or when an apnea test cannot be performed. Ancillary tests are also u...

References 1. Newell DW, Aaslid R, Lam A, Mayberg T, Winn HR. Flow and velocity during autoregulation testing in humans. Stroke. 1994; 25:270. Abstract. 2. Miiller HR, Casty M, Moll R, Zehnder R. Response of middle cerebral artery volume flow. Cerebrovasc Dis. 1991;l:82-89. 3. Muller HR, Casty M, Loeb J, Haefele M, Boccalini P. Transcranial Doppler sonography under lower body negative pressure ...

Herein, we report an unusual case of a patient who presented with a severe, sinking skin flap after a decompressive craniectomy and ventriculoperitoneal shunt surgery due to a traumatic brain injury. After cranioplasty, the patient's neurological deficiency improved and was confirmed by transcranial Doppler sonography. In addition to discussing the pathogenesis of the sinking skin flap, we emph...

References 1. Newell DW, Aaslid R, Lam A, Mayberg T, Winn HR. Flow and velocity during autoregulation testing in humans. Stroke. 1994; 25:270. Abstract. 2. Miiller HR, Casty M, Moll R, Zehnder R. Response of middle cerebral artery volume flow. Cerebrovasc Dis. 1991;l:82-89. 3. Muller HR, Casty M, Loeb J, Haefele M, Boccalini P. Transcranial Doppler sonography under lower body negative pressure ...

References 1. Newell DW, Aaslid R, Lam A, Mayberg T, Winn HR. Flow and velocity during autoregulation testing in humans. Stroke. 1994; 25:270. Abstract. 2. Miiller HR, Casty M, Moll R, Zehnder R. Response of middle cerebral artery volume flow. Cerebrovasc Dis. 1991;l:82-89. 3. Muller HR, Casty M, Loeb J, Haefele M, Boccalini P. Transcranial Doppler sonography under lower body negative pressure ...

Neurologic injury subsequent to decompression from diving may be due to paradoxical arterialization of venous gas emboli. Of 40 divers who performed 53 open water dives after being tested for a patent foramen ovale (PFO), arterial gas emboli were detected in 7 of 13 dives, which resulted in venous bubbles. In five of these seven dives, there was evidence of a PFO by contrast transcranial Dopple...

Two patients with acute occlusion of the middle cerebral artery (MCA) were treated with intravenous alteplase. Neurovascular monitoring, which was performed simultaneously via transcranial sonography, enabled precise documentation of MCA recanalization. This information was used to tailor the dosage and duration of alteplase treatment. Sonographic information concerning the arterial segments in...