Medical devices; neurological devices; classification of the brain injury adjunctive interpretive electroencephalograph assessment aid. Final order.

The Food and Drug Administration (FDA) is classifying the brain injury adjunctive interpretive electroencephalograph assessment aid into class II (special controls). The special controls that will apply to the device are identified in this order and will be part of the codified language for the brain injury adjunctive interpretive electroencephalograph assessment aid's classification. The Agency is classifying the device into class II (special controls) in order to provide a reasonable assurance of safety and effectiveness of the device.

Peripheral neuropathy: pattern recognition for the pragmatist.

Long lists of causes of peripheral neuropathy make peripheral nerve disease a dry and uninspiring subject. A simple scheme based on the answers to just six questions should enable the clinician to recognise characteristic patterns, investigate relevant subgroups appropriately, and identify treatable disorders quickly: which systems are involved? What is the distribution of weakness? What is the nature of the sensory involvement? Is there any evidence of upper motor neuron involvement? What is the temporal evolution? Is there any evidence for a hereditary neuropathy? Standard screening investigations suffice for the common length dependent axonal neuropathies while complex presentations need more detailed investigations targeted to their clinical phenotype.