Search PubMed⌕ Search

Biomedical subjects

F Calbucci

Publications and source records attributed to F Calbucci.

47 records · Page 3Linked to original sources
PubMedDate not supplied

[Correlations between intracranial pressure (I.C.P.) and EEG changes during traumatic coma (author's transl)].

A total of 55 polygraphic recording (ICP, EEG, EMG, EOG, Respiration, and ECG) were made in 20 comatose patients following cranial injuries, during the week after the injury. Whenever the ICP was stable, and without waves, and whatever the mean values were, the EEG tracing was slow, monomorphic, of large amplitude, and nonreactive. Each time that ICP recordings included Lundberg's B waves, the EEG tracings showed alternating bursts of slow waves and periods of rapid activity, with or without typical sleep patterns. The ICP increases each time there is flattening of the tracing and diminishes with the reappearance (spontaneous or provoked) of slow waves. The artificial respiration is not always involved in determining these phenomena.

Adolescent↗
PubMedDate not supplied

[Correlations between E.E.G. findings and intracranial pressure (ICP) during treatment of acute post-traumatic intracranial hypertension (preliminary report) (author's transl)].

An infusion of a 10% solution of Althesin was administered for treatment of acute post-traumatic intracranial hypertension. Six comatose patients, aged from 7 to 22 years, without neurosurgical lesions, were treated with doses of the compound varying from 40 to 400 ml per day for 1 to 6 days. Daily polygrahic recordings (E.E.G, E.M.G., E.K.G., respiration and I.C.P.) were made in all patients for periods of 4 to 8 hours. Doses lower than 0.12 ml/min. caused a slight reduction in I.C.P. in two patients, without variations in the E.E.G. Doses between 0.12 and 0.36 ml/min. provoked a reduction in I.C.P. in all patients, and the appearance of burst suppression in the E.E.G. in those patients with an "alternating" tracing only. Higher doses (0.36 to 0.72 ml/min.) caused a reduction in I.C.P. less than 50% in 5 of the 6 patients. Continuous slow wave tracings and border-line tracings showed less constant modifications. The reactivity of the I.C.P. and the E.E.G. to Althesin appears earlier and is more evident in patients with an alternating E.E.G. tracing and with pressure waves of the Lundberg type b. No side effects related to the use of barbiturates were noted after interrupting treatment.

Acute Disease↗
PubMedDate not supplied

Magnetic resonance spectroscopy study of low grade extra and intracerebral human neoplasms.

In this study we report an in vitro 1H magnetic resonance spectroscopy (MRS) characterization of water soluble metabolites obtained from 17 low grade extra and intracerebral human tumors (8 meningiomas, 5 oligodendrogliomas, 2 subependimomas and 2 ependimomas). In addition, the in vivo localized 1H MRS results for 4 of the meningiomas are reported. The main metabolic features characterizing low grade tumors were investigated. Meningiomas are characterized by high Cho/Cr and Ala/Cr ratios; in many cases both in the in vitro and the in vivo spectra these ratios cannot be evaluated, due to the absence of the Cr metabolite. Low grade oligodendrogliomas are characterized by low Cho/Cr ratios. High amounts of myo-inositol are found in the spectra of ependimomas and subependimomas which are distinguished by different Cho/Cr ratio values and by a different Ala content.

Brain Neoplasms↗
PubMedDate not supplied

Osseous metaplasia in a growth hormone-secreting pituitary adenoma.

A case of growth hormone-secreting adenoma of the pituitary gland showing osseous metaplasia is described in a 56-year-old acromegalic female. The tumor was composed of nests of densely granulated cells separated by and intermixed with calcifications, trabeculae of mature bone and fat. Calcifications are seldom found in pituitary adenomas. In rare instances, calcium deposits can be prominent enough to lead to the formation of pituitary stones and bone which replace the entire tumor mass. Analogously with metaplastic meningiomas, we propose using the term metaplastic adenoma to define cases with osseous metaplasia in order to distinguish between lesions containing bone from the more frequently seen calcified adenomas.

Acromegaly↗