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Biomedical subjects

D Hartman

Publications and source records attributed to D Hartman.

At least 37 records · Page 2Linked to original sources
PubMed1994

Racemic epinephrine in the treatment of laryngotracheitis: can we identify children for outpatient therapy?

The purpose of this study was to identify a cohort of children with laryngotracheitis (croup) who may be safely discharged from the emergency department (ED) after treatment with nebulized racemic epinephrine (RE), corticosteroids, and prolonged observation. Consecutive children (younger than 13 years of age) presenting to the ED with the diagnosis of laryngotracheitis were evaluated prospectively according to a croup scoring system. Sixty-one patients (4 to 108 months of age) with persistent inspiratory stridor at rest after 20 minutes of mist therapy who received nebulized RE (0.05) mL/kg of a 2.25% solution) and intramuscular dexamethasone (0.6 mg/kg) were enrolled in the study. Patients were observed in the ED while croup scores were assessed at 15, 60, 120, and 180 minutes. Croup scores were significantly improved (analysis of variance, P < .01) throughout the observation period in 31 patients (51%) who were discharged from the ED. Only one patient returned within 48 hours for further cool mist therapy. The maximum benefit from RE therapy was seen at 60 minutes. If a child had persistent resting stridor or a croup score greater than 2 at that time, hospitalization was inevitable. The 30 patients admitted to the hospital were younger (19.1 v 27.8 months) and had higher pretreatment croup scores (5.7 v 4.1). This was the first prospective study to identify a subset of children who have received RE to be safely discharged home after observation in the ED.

Administration, Inhalation↗
PubMed1994

A comparison of pain experienced during hysterosalpingography and in-office falloposcopy.

OBJECTIVE: To determine patient perception of the intensity of pain during in-office falloposcopy compared with hysterosalpingography (HSG). DESIGN: A prospective quality assurance study using a formal pain scale to compare two procedures. SETTING AND PATIENTS: Patients attending a tertiary level infertility clinic. INTERVENTIONS: In-office falloposcopy or HSG using analgesics. MAIN OUTCOME MEASURES: The mean pain score and area under the pain curve experienced during each investigation. RESULTS: Using our technique, in-office falloposcopy was associated with a significantly lower mean intensity of pain and with a longer procedure. The duration of the falloposcopic examination declined significantly with physician experience. Flushing adjacent to the uterotubal ostium, ostial cannulation, and rapid eversion provoked episodes of acute pain during falloposcopy. CONCLUSION: These results support the patient acceptability of in-office falloposcopy.

Adult↗
PubMed1993

Analgesic activities of PEM-420, the active eutomer of pemedolac.

PEM-420, the active isomer of pemedolac, inhibited the writhing responses induced by phenylbenzoquinone (PBQ), acetic acid, and acetylcholine in mice with ED50's of 0.80, 0.92, and 0.075 mg/kg p.o., respectively. In the rat acetic acid writhing assay, PEM-420 exhibited an ED50 value of 8.4 mg/kg p.o. In the Randall-Selitto test, PEM-420 raised the pain threshold of the yeast-injected paw (ED50 = 0.55 mg/kg p.o.). Like other NSAIDs, PEM-420 inhibited the PBQ-induced production of PGI2 and PGE2 in the mouse peritoneal cavity, with ED50 values of 0.5 and 1.2 mg/kg p.o., respectively. It had weak ulcerogenic liability in rats (acute UD50 = 99 mg/kg p.o. in fasted rats; subacute UD50 = 74 mg/kg/day for 4 days in fed rats). The data indicate that PEM-420 is a potent and safe peripheral analgesic.

Acetates↗
PubMed1993

Pharmacological characterization of WAY-121,520: a potent anti-inflammatory indomethacin-based inhibitor of 5-lipoxygenase (5-LO)/phospholipase A2 (PLA2).

WAY-121,520 inhibited human synovial fluid PLA2 (HSF-PLA2) (IC50 = 4 microM) using arachidonic acid-labeled E. coli as substrate. Further biochemical characterization of WAY-121,520 demonstrated potent inhibition of 5-lipoxygenase (5-LO) activity in the murine macrophage (LTC4, IC50 = 4 nM) and rat PMN (LTB4, IC50 = 10 nM) and an ability to antagonize LTD4 binding to isolated guinea-pig trachea (pKB = 6.0). In vivo anti-inflammatory activity was noted in murine TPA-induced (ED50 = 91 micrograms/ear) and arachidonic acid-induced (66% inhibition at 400 micrograms/ear) ear edema and in leukotriene-dependent antigen-induced bronchoconstriction in the guinea pig (73% inhibition at 50 mg/kg, p.o.). WAY-121,520 represents a novel series of indomethacin-based inhibitors of PLA2 with anti-inflammatory activity resulting from a combination of biochemical activities (inhibition of 5-LO and PLA2 and LTD4 antagonism). This agent may provide added therapeutic efficacy over more selective inhibitors.

Animals↗
PubMed1990

Families of borderline clients: opening the door to therapeutic interaction.

Clients who have borderline personality disorders have special needs for family involvement in their treatment, and inpatient staff members need to be aware of these needs. This article discusses reactions staff may experience when treating such clients and families, reasons why establishing and maintaining therapeutic relationships with family members is important, and ways of approaching and developing these relationships. Confrontation and limit-setting are seen as especially important, as is the role of teaching and support.

Attitude of Health Personnel↗
PubMed1983

Immunochemical studies of tobacco mosaic virus--V. Localization of four epitopes in the protein subunit by inhibition tests with synthetic peptides and cleavage peptides from three strains.

Two antigenic determinants have been located in the vicinity of residues 1-10 and 34-39 of the coat protein of tobacco mosaic virus by means of ELISA and complement fixation inhibition experiments with synthetic peptides. The determinant present in residues 1-10 is also expressed at the outer surface of the subunits when they are assembled into virions. Two other determinants expressed in the dissociated protein subunit have been located in the vicinity of residues 55-61 and 80-90 by means of inhibition tests with tryptic peptides. These results bring to seven the number of antigenic determinants of the protein subunit that have been located.

Amino Acid Sequence↗
PubMed1980

[Microdurimetric and biochemical study of human articular cartilage. Comparison of different joints].

The micro-hardness and the density of fixed negative charges in cartilage of the shoulders, hips and knees of 6 subjects were studied. These two parameters were narrowly correlated. The resistance and proteoglycan concentration of the cartilage of the femoral head were greater than those of the knee and of the shoulder. They did not vary on each side. There is a significant correlation between the hardness of the cartilage of the femoral head and of the external femoral condyle. The histologically normal cartilage of the femoral head in arthrosis is at the lower limit of control values for hardness.

Cartilage, Articular↗