Relationships between body size and some life history parameters.

Patterns in life history phenomena may be demonstrated by examining wide ranges of body weight. Positive relationships exist between adult body size and the clutch size of poikilotherms, litter weight, neonate weight life span, maturation time and, for homeotherms at least, brood or gestation time. The complex of these factors reduces r max in larger animals or, in more physiological terms, r max is set by individual growth rate. Comparison of neonatal production with ingestion and assimilation suggests that larger mammals put proportionately less effort into reproduction. Declining parental investment and longer development times would result if neonatal weight is scaled allometrically to adult weight and neonatal growth rate to neonatal weight. Body size relations represent general ecological theries and therefore hold considerable promise in the development of predictive ecology.

A new dynamic lumbrical simulating splint for claw hand deformity.

The claw hand deformity, resulting from low ulnar or combined low ulnar and median nerve palsy, is an incapacitating situation. The splint described herein reverses the clawing by substituting for the lumbricals and interossei. If started early, it not only prevents the permanent stiffness of fingers in the claw position, but also effectively restores function without hampering day to day work because it is a surface splint.

A new graft spreader.

A new graft spreader for applying the skin graft is described that solves the problems of removing subgraft fluid collection and reverting the curled edge of the graft.

Infant mortality review as a vehicle for quality improvement in a local health department.

BACKGROUND: Many communities across the United States have established fetal and infant mortality review (FIMR) programs as a way of gaining insight into the causes of such deaths and of devising and implementing ways to improve the health of pregnant women and their infants. IMR PROCESS: The IMR process in the Jefferson County Department of Health in Birmingham, Alabama, evolved in a somewhat different fashion than that in other communities. A technical review team reviews all the infant deaths in the county, with particular attention to each woman's pregnancy history. A community review team reviews composite cases that illustrate some particular problem that might lead to infant mortality, such as teenage pregnancy or short intervals between pregnancies. This team provides insights into cultural patterns and a community perspective on the problems. Recommendations from the two teams are acted on by the health department, with the assistance of other agencies as needed. IMPACT OF THE IMR PROCESS: The IMR process has been used to increase community agency participation in health department activities, improve health department procedures, increase health department staff acceptance of a new and controversial program (Healthy Start), and offer services to women who need them. CONCLUSIONS: IMR has become a mechanism for CQI in the health department, embodying many of the principles of CQI, including the use of teams, focus on a team mission, and examination of processes, not individuals. The program offers a model of how to reduce rates of fetal and infant mortality.

A comparative study of immunohistochemical staining for neuron-specific enolase, protein gene product 9.5 and S-100 protein in neuroblastoma, Ewing's sarcoma and other round cell tumours in children.

A comparative study of immunohistochemical staining for neuron-specific enolase (NSE), protein-gene product 9.5 (PGP 9.5) and S-100 was made in 71 undifferentiated round cell tumours from 65 children using formalin-fixed tissues and a standard alkaline phosphatase-anti-alkaline phosphatase method. All of 29 neuroblastomas marked for NSE and 27 for PGP 9.5; staining was diffuse and usually strong in all tumour elements, irrespective of the degree of differentiation. Patterns of staining remained consistent in primary, recurrent and metastatic tumours and were not modified by previous chemotherapy. S-100 staining was weak and confined to cell processes and schwannian elements in less than half of the tumours studied. Two primitive neuroectodermal tumours both stained strongly for NSE and PGP 9.5. Staining for NSE was observed in single maturing cells in 3/12 rhabdomyosarcomas and in tubular elements in 2/4 Wilms' tumours; primitive rhabdomyoblasts and undifferentiated renal blastema were negative; seven lymphomas were negative. Six of 17 skeletal Ewing's sarcomas showed light to moderate cytoplasmic staining for NSE and PGP 9.5. The site, histology and clinical course of these marker-positive Ewing's sarcomas showed no distinctive features. Staining for PGP 9.5 is a useful additional marker for neural differentiation in round cell tumours.