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Biomedical subjects

R Sutter

Publications and source records attributed to R Sutter.

28 records · Page 2Linked to original sources
PubMed1988

[Gas gangrene of the orbit].

This case report describes a penetrating injury of the orbit damaging the inferior division of the oculomotor nerve and causing a Clostridium perfringens inflammation of the orbit within 24 hours.

Adult↗
PubMedDate not supplied

Pyramidal tract responses (PTR) during hypoxia and hypotension.

In rats with unilateral carotid artery ligation pyramidal tract responses were studied during hypoxia and during trimethaphan-induced hypotension. Observations on EEG activity during hypoxia suggest that unilateral carotid artery ligation produces a more severe perfusion defect in lateral portions of the hemisphere. During hypoxia and during trimethaphan-induced hypotension indirect PTRs disappeared first from the hemisphere on the side of carotid artery ligation and next from the opposite hemisphere. This was followed by loss of direct PTRs in the same order. Animals could not be resuscitated once the direct PTR from the non-ligated hemisphere had disappeared. Hypotension appears to be a late contributing factor in impairing electrocerebral activity during hypoxia in this study.

Animals↗
PubMedDate not supplied

Carbon dioxide laser surgery in otorhinolaryngology: pulsed beam versus continuous wave beam.

According to various authors, the use of the carbon dioxide laser beam in pulsed form has the following advantages: better cutting action at the same mean power as that of the continuous laser, and less tissue damage at the edge of the cut. To date, however, there are no conclusive tests that demonstrate that pulsed operation of the CO2 laser has clear advantages over continuous operation. This study compares the effects of a pulsed laser and a continuous laser on freshly removed human palatine tonsils and skeletal muscle tissue. The depth of thermal tissue damage was measured microscopically. It was observed that the depth of damage at the edge of the cut tissue decreased with increasing power density with both the pulsed laser and the continuous laser. With comparable power densities, however, pulsed operation unexpectedly produced somewhat deeper damage at the edge of the cut than did the continuous operation. The results obtained indicate that the pulsed CO2 lasers available today have no advantages over the continuous mode CO2 lasers for otolaryngologic surgical applications.

Carbon Dioxide↗