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Biomedical subjects

S Daye

Publications and source records attributed to S Daye.

7 recordsLinked to original sources
PubMed2001

The use of telemedicine for real-time video consultation between trauma center and community hospital in a rural setting improves early trauma care: preliminary results.

BACKGROUND: By geographic necessity, rural trauma patients must be initially stabilized at local community hospitals before transfer for definitive care. In this study, it was hypothesized that telemedicine consults with trauma surgeons from a Level I trauma center online while the patient was still in the community hospital ED could positively affect care. METHODS: Four community hospital emergency departments in upstate New York and Vermont were equipped with dual cameras with remote control capability. Three trauma surgeons' homes were wired and equipped with telemedicine systems. Protocols were developed for the initiation of a telemedicine consult. RESULTS: There were 26 telemedicine consults over an 8-month period. The telemedicine population was significantly more severely injured and had a higher mortality than the general trauma population admitted to the Level I trauma center. In two cases, it was felt that the telemedicine consultation was potentially lifesaving. On follow-up, more than 80% of the referring providers felt that the telemedicine consult improved care. CONCLUSION: Telemedicine provides a virtual online trauma surgeon to assist with the resuscitation and stabilization of the major trauma patient in a small community hospital. These preliminary results show a positive impact on rural trauma patient care at the local community hospital.

Adolescent↗
PubMed1988

Pruritic rash associated with cat scratch disease.

Cat scratch disease is a benign, self-limited illness characterized by regional lymphadenopathy that usually occurs in association with a history of contact with a cat. Cases of cat scratch disease with skin manifestations that included erythema nodosum; erythema multiforme; erythema marginatum; and non-specific maculopapular, petechial, and morbilliform rashes have been reported. No case of pruritic rash associated with cat scratch disease has been previously reported. In fact, one authority specifically states that the rash of cat scratch disease is nonpruritic. We report a well-documented case of cat scratch disease in which the patient's principal symptom was a pruritic rash. It is possible that this rash was the result of an immunologic reaction to the infectious agent of cat scratch disease. We conclude that cat scratch disease should be included in the differential diagnosis of pruritic rashes in children.

Cat-Scratch Disease↗
PubMed1984

Characterization of oat calmodulin and radioimmunoassay of its subcellular distribution.

A protein identifiable as calmodulin has been isolated from oat (Avena sativa, var Garry) tissues. This protein is relatively heat stable, binds to hydrophobic gels, and phenothiazines in a calcium-dependent fashion, and binds to antibody to rat testes calmodulin. Based on its migration on sodium dodecyl sulfate-polyacrylamide gels, ultraviolet absorption spectrum, and amino acid composition, oat calmodulin is essentially identical to calmodulin isolated from other higher plants. Radioimmunoassays indicate that calmodulin is associated with isolated oat protoplasts, mitochondria, etioplasts, and nuclei and also appears to be a component of oat cell wall fractions.

Journal Article↗
PubMed1984

Inhibition of gravitropism in oat coleoptiles by the calcium chelator, ethyleneglycol-bis-(beta-aminoethyl ether)-N,N'-tetraacetic acid.

A treatment period as brief as 8 h in 10(-3) M EGTA completely blocks gravitropism in 70-80% of the treated coleoptiles of oats (Avena sativa L. cv. Garry) without inhibiting growth. Only about 10% of the plants perfused in water failed to exhibit gravitropism. Subsequent perfusion of EGTA-treated plants with calcium completely restores gravitropism; post-perfusion with water does not. After perfusion in water for 10 h, gravistimulated oat coleoptile segments show the same asymmetry of 45Ca distribution as reported earlier for non-perfused coleoptiles and sunflower hypocotyls. The degree of this asymmetry is reduced in those coleoptiles partially inhibited by perfusion in EGTA and is essentially absent in those coleoptiles completely inhibited by EGTA. The fact that calcium reverses the inhibitory effects of EGTA on gravitropism indicates that the inhibition was probably due to a reduction in the availability of free calcium required for one or more of the transduction steps of gravitropism.

Avena↗
PubMedDate not supplied

The false-negative mammogram.

In general, failure to detect or correctly characterize breast cancer can be attributed to one of four main factors: inherent limitations of screen-film mammography, inadequate radiographic technique, subtle or unusual lesion characteristics, and interpretation error. The restricted latitude and display contrast of screen-film mammography are among the significant factors that result in decreased visualization of breast tumors and microcalcifications in patients with dense fibroglandular tissue. Unlike the inherent limitations of screen-film mammography, a poor radiographic technique can be improved on and should be eliminated. Crucial components of a well-performed mammographic examination are correct positioning, adequate compression, and proper image exposure. Lesion characteristics that may lead to a false-negative mammogram include small size, a site where visualization is difficult, visualization on only one view, a benign or probably benign appearance, lack of a desmoplastic reaction, and slow or no apparent growth. Causes of interpretation error include suboptimal viewing conditions, outside distractions, lack of a systematic approach, oversight of a subtle lesion because of an obvious finding, lack of knowledge of clinical findings, imprecise correlation with results of other studies, and nonbelief. Recognition of these various factors should help decrease the rate of false-negative mammograms.

Breast Neoplasms↗