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Biomedical subjects

J S Martin

Publications and source records attributed to J S Martin.

104 records · Page 6Linked to original sources
PubMed1975

A demonstration of microvilli on the luminal surfaces of epithelial cells of the canine extrahepatic biliary tract.

Micromorphologic evidence is presented which indicates that in the dog the lining epitheliums of the intramural portion of the common bile duct and proximal part of the cystic duct are organized into convoluted folds. The mucosal lining of the extramural portion of the common bile duct appears to contain simple crypt structures. The mucosal surface of the hepatic duct is characterized by parallel ridges, longitudinally aligned with the long axis of the duct. The epithelial cells of the entire canine extrahepatic biliary tree present a topographic-dome shaped appearance, and their luminal surfaces are densely covered with microvilli.

Animals↗
PubMedDate not supplied

A physiological and subjective evaluation of meditation, hypnosis, and relaxation.

Ss were monitored for respiratory rate, pulse rate, blood pressure, skin resistance, EEG activity, and muscle activity. They were monitored during the alert state, meditation (TM or simple word type), hypnosis (relaxation and task types), and relaxation. Ss gave a verbal comparative evaluation of each state. The results showed significantly better relaxation responses for the relaxation states (relaxation, relaxation-hypnosis, meditation) than for the alert state. There were no significant differences between the relaxation states except for the measure "muscle activity" in which meditation was significantly better than the other relaxation states. Overall, there were significant differences between task-hypnosis and relaxation-hypnosis. No significant differences were found between TM and simple word meditation. For the subjective measures, relaxation-hypnosis and meditation were significantly better than relaxation, but no significant differences were found between meditation and relaxation-hypnosis.

Adult↗
PubMedDate not supplied

Analysis of the effect of bilateral sympathetic stimulation of cerebral and cephalic blood flow in the dog.

Unilateral stimulation of the cervical sympathetic in dogs had no effect on cerebral blood flow (CBF) measured by the venous outflow technique. Since this technique measured CBF from both cerebral hemispheres, small changes induced by unilateral stimulation could have been masked by a large constant CBF measured from the contralteral hemisphere. To test this possibility the effect of simultaneous bilateral sympathetic stimulation was studied when the dog was breathing either normal air or a gas mixture of 10%CO2. During normocapnia, no changes in CBF occurred; during hypercapnia CBF increased 19% following passively the increase in blood pressure. These data indicate that bilateral stimulation of extracranial sympathetic nerves does not exert a significant effect on CBF. We show mathematically and experimentally that unoccluded anastomses will cause CBF to appear to decrease in response to sympathetic stimulation. This may explain why others have observed changes in CBF during sympathetic stimulation.

Animals↗
PubMedDate not supplied

Solitary eosinophilic granuloma of the temporal lobe: a case report and long-term follow-up of previously reported cases.

A case of solitary eosinophilic granuloma of the temporal lobe is reported and compared with seven previously documented cases. Long-term clinical follow-up information was obtained on two cases that were originally reported in 1977 and 1981. Solitary eosinophilic granuloma of the cerebral hemisphere, a rare manifestation of Langerhans cell histiocytosis, had excellent long-term clinical outcomes in this small number of patients.

Adult↗
PubMedDate not supplied

[Quality control activities in 62 hospitals of the National Health System].

BACKGROUND: The increasing interest for quality in hospital care brought the need to evaluate the effect of quality control and quality assurance strategies that are being or could be implemented in spanish hospitals. METHODS: This article describes the results of the pre-assessment phase of a study carried out as a european concerted action in a total of 262 hospitals in 15 european countries. Spain contributed with 88 hospitals divided in two groups of 62 and 16 hospitals. The study herein reported refers to the group of 62 hospitals belonging to the spanish National Health System in which the characteristics of the hospital and the baseline situation in respect to quality assurance structures and activities have been assessed through the answers to the standard questionnaire used the study. RESULTS: Sixty-two hospitals filled out the preassessment questionnaire. Twenty three (37%) have a quality assurance programme and eighteen have personnel assigned to it. Clinical or quality control committees exist in 56 hospitals (90.3%). Fifty six hospitals (88.7%) know their autopsy rate, and 27 (43.5%) know their nosocomial infection rate as well as the adverse reactions due to blood transfusions. Complaints are registered in 56 hospitals (90.3%) and patients surveys are carried out in 54 (87.1%). Only 33 hospitals (53.2%) actually use this data for quality assurance purposes. CONCLUSIONS: Most of the quality activities in hospitals are carried out by physicians or nurses in the different clinical committees considered as quality committees. The patients surveys results and the data from patients complains are not used in those committees as inputs for quality actions. The committement of the top hospital management is needed to achieve an integrated approach to quality activities in hospitals.

Guidelines as Topic↗