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Biomedical subjects

A Batten

Publications and source records attributed to A Batten.

4 recordsLinked to original sources
PubMed1998

Use of autologous osteocyte containing bone pate for closure of tegmental defects.

OBJECTIVE: This article aimed to describe a new technique for the reconstruction of middle fossa tegmental defects using autologous osteocyte containing bone pate. STUDY DESIGN: The technique is demonstrated using clinical photographs and x-ray examples of tegmental defects. TECHNIQUE: Pliable bone pate graft is manufactured using autologous bone dust, blood, iodine solution, and tissue glue (Tisseel; Immuno, Austria). The graft is placed accurately via a combined mini-middle fossa craniotomy and middle mastoidectomy approach. CONCLUSION: This new technique of middle fossa bony tegmental repair has considerable advantages over previously described methods that use rigid or synthetic materials.

Bone Transplantation↗
PubMed1991

Sensitivity to viewpoint in children's drawings of objects and relations between objects.

Previous literature suggests that young children are relatively insensitive to viewpoint, only showing their view when the task is manipulated to provoke it. In contrast, older children appear to become more sensitive to viewpoint and it has been claimed that there is a developmental progression toward use of linear perspective as a means of drawing a view-specific scene. This study investigates sensitivity to viewpoint by manipulating it directly. Children between the ages of 6 and 14 years were asked to draw an L-shaped array of three cubes from one of three views: frontal eye level, frontal looking down, and corner looking down. At every age children showed sensitivity to their view in the sense that there were consistent differences between the drawings produced in the three viewing conditions. In the case of younger children this did not lead to an accurate portrayal of either their view or the array relations. Older children portrayed their view and the array relations more accurately, and viewpoint had a strong effect on the choice of projection system both within and between objects. There was no evidence of a general progression toward use of linear perspective.

Adolescent↗
PubMed1989

Congenital abdominal aortic aneurysm.

The authors report the extremely rare occurrence of a congenital abdominal aortic aneurysm, 6 cm in diameter, found in a 1-month-old infant. Prenatal ultrasonography at 34 weeks' gestation had shown the aneurysm, which at that time was interpreted as a renal cyst. At operation, an 8-mm polytetrafluoroethylene tube graft was interposed between the infrarenal aorta and the bifurcation. Cardiopulmonary bypass facilitated operative management by permitting return of blood lost and by maintaining body temperature. In a review of the literature, the authors could not find any report of a neonatal aneurysm of this magnitude. Regrettably, the cause of this true aneurysm remains obscure.

Aorta, Abdominal↗