PURPOSE To evaluate hepatic vein flow patterns and velocities in children with acute viral hepatitis and to compare the findings to a group of healthy children, with duplex sonography. MATERIALS AND METHODS Forty children with acute viral hepatitis were enrolled in group 1 and forty healthy children were enrolled in group 2 (control group). Both groups underwent gray scale and duplex sonograp...

(TWs) and generalized spike waves (GSWs), as in nonconvulsive generalized status epilepticus, are biologically distinct, but can closely resemble one another on the scalprecorded EEG.1 As numerous authors have pointed out, TWs are characteristic of metabolic encephalopathies.2-5 However, they have also been described in sepsis, meningitis and cortical degenerative diseases.6-9 Many of these con...

Voluntary movements are goal-directed movements triggered either by internal or external cues. Voluntary movements can be improved with practice as one learns to anticipate and correct for environmental obstacles that perturb the body. Single-joint rapid (ballistic) movements are goal-directed movements performed in a single action, without the need for corrective adjustments during its course....

Ischemia-induced hyperkalemia (accumulation of extracellular K(+)) predisposes the heart to the development of lethal reentrant ventricular arrhythmias. This phenomenon exhibits a triphasic time course and is thought to be mediated by a combination of three mechanisms: 1) increased cellular K(+) efflux, 2) decreased cellular K(+) influx, and 3) shrinkage of the extracellular space. These ischem...

Biological fixation of orthopedic soft tissue grafts to bone poses a significant clinical challenge. The clinical success of soft tissue-based grafts for anterior cruciate ligament (ACL) reconstruction is limited by the lack of functional graft integration with subchondral bone. Soft tissues such as the ACL connect to subchondral bone via a complex interface whereby three distinct tissue region...

Newly developed biphasic waveforms improve defibrillation efficacy both by reduction of defibrillation threshold and by amelioration of shock-induced dysfunction depending on the relative shape of the first and second pulses. Each of these independent effects improves the waveform's safety factor, the ratio between the shock intensity that produces a specific degree of postshock dysfunction and...