Biomedical subjects

L M Humphrey

Publications and source records attributed to L M Humphrey.

4 recordsLinked to original sources

PubMed2001

Adjuncts to preparing wounds for closure: hyperbaric oxygen, growth factors, skin substitutes, negative pressure wound therapy (vacuum-assisted closure).

Achieving closure in a chronic wound requires provision of adequate oxygen delivery to the tissue, adequate protein and other nutritional factors, a moist environment, an appropriate inflammatory milieu, dèbridement, and correction of contributing medical diagnoses. In some patients, these conditions are achieved easily, whereas in others, greater effort is required. Adjunctive treatments, including HBO2, growth factors, skin substitutes, and negative-pressure wound therapy (e.g., V.A.C.) can provide the proper conditions for healing in appropriately selected patients.

Chronic Disease↗

PubMed1995

Initial experience with asynchronous transfer mode for use in a medical imaging network.

Picture archiving and communication Systems (PACS) for medical imaging have always suffered from band-width limitations, throughput, and proprietary protocols. Commercially available local area networks have been hard pressed to meet the requirements of image transfer in a time consistent with patient-care needs. Recent technologic advances provide potential solutions to these constraints. Asynchronous transfer mode (ATM) provides the aggregate bandwidth and throughput that may be sufficient to satisfy the medical imaging community. Networks using prototype ATM technology have been available and commercial hardware is now becoming available. This report presents initial performance results of an ATM network and its suitability for use in a digital imaging network. Throughput of 10 Mbytes/sec was attained with Transmission Control Protocol/Internet Protocol using commercially available hardware.

Computer Communication Networks↗

PubMed1993

Physician experience with viewing digital radiographs in an intensive care unit environment.

After several years of continuous operation, the utility of digital viewing stations as assessed by bedside clinicians has been investigated through the distribution of questionnaires to past and present users. The results of the questionnaire have indicated that the bedside physicians prefer using the workstations over handling film. For evaluation of line placements, chest tubes, and pleural effusions, the physicians prefer softcopy display over hardcopy. However, for analysis of air space disease and diagnosis of pneumothorax, images displayed on the workstation were not believed to be as useful as standard hardcopy.

Attitude of Health Personnel↗

PubMed1993

Time comparison of intensive care units with and without digital viewing systems.

As hospital radiology departments and intensive care units (ICUs) make plans to use or expand the usage of digital data outside of the radiology department, the need to assess the requirements of the potential recipients in the ICUs has become more important. The present operations in an ICU that uses digital viewing instead of film has been compared with a unit that does not. The difference in time between x-ray exposure and final image viewing was determined in both settings and compared. In this preliminary study, significant differences were found between the two units. The odds of having examination results actually accessed by the ordering physician in an hour or less were 9.5 times greater for the unit with digital viewing capability than for the one without it.

Coronary Care Units↗