CO2 removal with hemodialysis and control of plasma oncotic pressure

CO2 removal by hemodialysis, associated with systemic alkalinization, is the simplest method of metabolic CO2 elimination. In this experimental work, the authors investigated the efficacy of this protocol in modifying an alkaline perfusate by addition of dextran 40. The results, unlike those of preceding experimental series without dextran, disclosed no significant change in weight, hemodynamic variables, electrolyte concentrations or osmotic or oncotic pressures after 12 hours. Sixty-five percent of metabolic CO2 was eliminated with a bypassed blood flow rate of only 8% of cardiac output.

Growth of trigemino-cerebellar areas in infant rat studied by micrometric and cytophotometric methods

The cerebellar lobules receiving trigeminal afferents, crus 2 and paramedian, and the lingula which receives only vestibular and spinal afferents were studied. Time and the modality of development were compared with earlier experiments carried out on other trigeminal cortico-cerebellar areas. A close connection between quantitative and qualitative aspects of afferents and one type of growth was demonstrated. There was correlation between various morphological features of the cerebellar area and the stages of genesis of masticatory function. Maturity of the certain lobules of the cerebellar cortex corresponded to the onset of weaning. Thus, the development of cerebellar structure seems to run parallel to progressive synergic musculo-mandibular activities associated with certain primary and secondary neuronal tracts.