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Biomedical subjects

R Fumero

Publications and source records attributed to R Fumero.

44 records · Page 3Linked to original sources
PubMed1985

Polyacrylonitrile membranes in hemodialysis: blood-surface interactions.

Investigations of blood-surface interaction phenomena with polyacrylonitrile-based membrane (AN-69) during hemodialysis are reported. The amount and surface distribution of adhering white blood cells (WBC), and adsorbed proteins (Pt) have been evaluated by image analysis of WBC, spectrophotometry and SDS-polyacrylamide gel electrophoresis of desorbed proteins. The protein contents of the patient's serum have been also investigated by SDS-electrophoresis. Results indicate that the distribution of both WBC, and Pt is non-uniform, and higher (71%, and 79% of the total detected amount, respectively) in the half membrane near the blood inlet (PAN-IN); PAN-IN and PAN-OUT eluates show the same protein bands by electrophoresis. The concentration of the proteins stably adsorbed on the membranes appears not to be related to their concentration in the patient's serum. A relatively strong band at MW = 14,400 in PAN eluates could be interpreted as the presence of lysozyme bound to the AN-69 membranes.

Acrylic Resins↗
PubMedDate not supplied

Humidity measurements in passive heat and moisture exchangers applications: a critical issue.

A reliable, quantitative assessment of humidification performances of passive heat and moisture exchangers in mechanically-ventilated patients is still to be achieved, although relevant efforts have been made to date. One of the major problems to tackle consists in the difficulty of humidity measurements, both in vivo (during either anaesthesia or intensive care unit treatments) and in vitro set-ups. In this paper a review of the basic operation principles of humidity sensors as well as an analysis of their usage within in vivo and in vitro tests are presented. Particular attention is devoted to the limitations arising from the specific measurement set-up, as they may affect the results notably.

Hot Temperature↗