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Biomedical subjects

S Riggio

Publications and source records attributed to S Riggio.

34 records · Page 2Linked to original sources
PubMed1984

[Neonatal gastric obstruction].

Gastric outlet obstruction in newborn may be due to segmental atresia or mucosal diaphragm. The authors report two cases of pyloric obstruction and they consider the etiopathogenetic and diagnostic aspects.

Duodenum↗
PubMed1976

[Frontal vertebral cleft in the newborn].

In the newborn and foetus in the last months of gestation it is possible to see in lateral radiography of the spine, a longitudinal radiotransparent band which may divide the bone nucleus of the vertebral body into two portions. This front vertebral separation should be considered an expression of a reversible abnormality rather than a malformation to the extent that it almost always concerns a differentiation delay in the vertebral structures. The literature and personal cases show, in fact, that the finding disappears more or less rapidly.

Diagnosis, Differential↗
PubMedDate not supplied

Application of singular value decomposition to topographic analysis of flash-evoked potentials.

Singular value decomposition is a robust numerical method for decomposing a matrix of multichannel EEG or EP data into a sharply reduced set of features with corresponding waveform, amplitude, and spatial vectors. In 19 normal subjects aged 19 to 40 years, the three largest features computed by the SVD algorithm accounted for 93-98 percent of the total variance of the averaged flash-evoked potential. There was good separation of major brain areas as well as clustering of related electrode sites. Orthogonal rotation of the three spatial vectors is essential to see clustering of brain areas across subjects. Three-dimensional display showed the regular presence of orthonormal occipital, frontopolar, and vertex spatial vectors. Since the spatial feature vectors cluster tightly and yet are orthonormal, statistical comparison of patients with normal control groups will be facilitated.

Adult↗
PubMedDate not supplied

Psychogenic status epilepticus.

A patient was brought to the Emergency Department in presumed status epilepticus. However, the seizure had many of the clinical characteristics that, in combination, were suggestive of a psychogenic event including asynchronous extremity movements, forward pelvic thrusting, and geotrophic eye movements. An arterial blood gas and serum electrolytes were normal despite one-half hour of tonic-clonic activity, and supported the diagnosis of a nonneurogenic event. The patient became conversant toward the end of the event, which confirmed that the seizure was nonepileptogenic.

Adult↗