Biomedical subjects

J C Kincaid

Publications and source records attributed to J C Kincaid.

5 recordsLinked to original sources

PubMed1990

Schwartz-Jampel syndrome with dominant inheritance.

The Schwartz-Jampel syndrome (SJS) is a rare congenital multisystem disorder of unknown pathogenesis which is characterized by distinct faces, skeletal deformities, joint contractures, short stature, muscle hypertrophy, clinical myotonia, and continuous muscle fiber activity. The inheritance pattern of SJS has been assumed to be autosomal recessive. We report the occurrence of the classic SJS syndrome in both a father and son in a non-consanguineous family, suggesting that SJS has the potential for a dominant pattern of inheritance.

Adult↗

PubMed1990

Tick bite paralysis.

Explore the source record for details and available documents.

Australia↗

PubMed1989

Late-onset familial amyloid polyneuropathy in an American family of English origin.

Recent advances permit biochemical and genetic classification of familial amyloidotic polyneuropathy. We report a family with the methionine-30 prealbumin variant, which is atypical in late age of onset and the appearance of proximal arm weakness before more typical generalized neuropathy.

Aged↗

PubMed1988

A model of the differing change in motor and sensory action potentials over distance.

Clinically recorded motor and sensory nerve responses show different degrees of change in response size over distance along a nerve. We describe a computer model to investigate possible causes of this phenomenon. Effects of the range of conduction velocity in a nerve and the size of the constituent action potentials forming the recorded response are evaluated. We conclude that the broader duration of the motor unit potential is the predominant factor in accounting for motor nerve responses showing less change over distance than sensory responses. The contributions of temporal dispersion and phase cancellation are also discussed.

Action Potentials↗

PubMed1988

AAEE minimonograph #31: the electrodiagnosis of ulnar neuropathy at the elbow.

Electrodiagnostic testing is useful in evaluating ulnar nerve elbow lesions. A flexed elbow seems preferable for conduction studies, since it eliminates the elbow segment slowing found in normals done in the extended position. Slowing of the motor velocity in the elbow segment was the most frequent abnormality in this study. Sensory conduction studies and needle examination each provided additional helpful data. Latency to ulnar forearm muscles and "inching" stimulations around the elbow are techniques that also deserve to be included in our standard armamentarium.

Electrodiagnosis↗