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Biomedical subjects

Juan Viaño

Publications and source records attributed to Juan Viaño.

3 recordsLinked to original sources

Diplegia due to transcranial knife-blade injury in a 20-month-old child.

Transcranial stab wounds are uncommon among both adults and adolescents and rarely occur in children, particularly when caused by another child. A 20-month-old girl was injured by a 3-year-old cousin, who introduced a knife blade into the brain through the left parietal region. The trajectory of the wound penetrated at least 5 cm, crossed the falx cerebri, and involved both motor cortical areas. The clinical sequela was a severe symmetric spastic diplegia.

Anti-Dyskinesia Agents↗

Proton magnetic resonance spectroscopy and magnetoencephalographic estimation of delta dipole density: a combination of techniques that may contribute to the diagnosis of Alzheimer's disease.

Whole-head magnetoencephalographic recordings were obtained from 10 patients with Alzheimer's disease (AD) and 10 healthy controls in a resting position. Spectroscopic examinations were performed by means of a 1.5-tesla whole-body scanner in the temporoparietal regions of both hemispheres. The relationship between (1)H-MRS-based and magnetoencephalography (MEG)-based measures and their conjoined capability to improve the diagnosis of AD were investigated in this study. Logistic regression analyses were performed. Three separated logistic models were calculated for (1)H-MRS-based metabolites, low-frequency magnetic activity, and the combination of both measures. A combined myoinositol/N-acetyl aspartate (mI/NAA)-delta dipole density (DD) model predicted the diagnosis with 90% sensitivity and 100% specificity. Additionally, the combination of temporoparietal mI/NAA and delta DD values explained the variability of individuals' cognitive status. The results support the notion that a multidisciplinary approach may improve the understanding and diagnosis of AD.

Acetylglucosamine↗

Cobb syndrome: case report.

We present a 7-year-old boy in whom cutaneous hemangioma and intramedullary and paraspinal arteriovenous malformations were associated. Magnetic resonance arteriography revealed the presence of the two arterovenous malformations, and the selective intercostal arteriography demonstrated that the intraspinal and paraspinal arteriovenous malformations were supplied by the same intercostal arteries. Rubbing the back was required to detect the cutaneous changes, which were only suspected by casual inspection.

Abnormalities, Multiple↗