[Case of van der Hoeve's syndrome].
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Deafness↗
Biomedical subjects
F Ferrari
Publications and source records attributed to F Ferrari.
[Diagnostic contribution of the electroencephalogram in the premature infant: personal casuistry (author's transl)].
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Atrophy↗
[Severe pulmonary gas embolism caused by intraoperative administration of hydrogen peroxide].
We report the case of a 3 year old boy who developed cardiac arrest during general anesthesia, immediately after the subcutaneous administration of hydrogen peroxide solution. Massive pulmonary embolization was hypothesized as the postoperative ECG showed an acute heart strain. However the occurrence of transient anisocoria, associated with a paresis affecting the left arm, remained unexplained. Since brain MR did not reveal any pathological data, a direct toxicity of hydrogen peroxide on a limited area of the CNS could be assumed.
Child, Preschool↗
Characterization of rheological and mucoadhesive properties of three grades of chitosan hydrochloride.
In the present study the rheological and mucoadhesive properties of three viscosity grades of a cationic polymer, chitosan, were investigated to assess the suitability of this polymer for gastroadhesive formulations. The influence of the pH, ionic strength and temperature of the hydration medium on the rheological properties was studied. The mucoadhesive performance was assessed in vitro by means of rheological synergism and tensile stress testing. A correlation was found between rheological synergism and tensile parameters (force of detachment and work of adhesion), which proves that both methods can correctly predict the mucoadhesive performance of the polymers examined. It was found that the interaction of chitosan with mucin decreases on increasing molecular weight.
Biopolymers↗