Early-onset sepsis with Staphylococcus auricularis in an extremely low-birth weight infant - an uncommon pathogen

Coagulase-negative staphylococci (CoNS) are often dismissed as a contaminant of blood cultures and are rarely considered as an etiology of perinatally acquired infections. We describe a case of early-onset sepsis with Staphylococcus auricularis in an extremely low-birth weight infant.

Effect of pharmacists on health care outcomes in hospitalized patients

The cost-effectiveness of pharmacists and their effect on inpatient health care outcomes were evaluated. For one year, data were collected on all patients receiving care from general medicine and general surgery teams at Walter Reed Army Medical Center, Washington, D.C. Two of five medicine teams and one of three surgery teams included a pharmacist. Teams that included a pharmacist were compared with teams that did not, in terms of patients' length of stay (LOS), mortality, and drug cost per admission. Data were compared for 3081 patients and collected for another 557 who were not included in the comparative study design. Health care teams that included a pharmacist had a shorter log LOS and lower log drug cost per admission but no difference in mortality. The average cost savings for teams that included a pharmacist was $377 per inpatient admission, and the benefit-to-cost ratio was 6.03:1. The inclusion of pharmacists on health care teams was cost-effective and provided a favorable benefit-to-cost ratio.

Iontophoresis of vinblastine into normal skin and for treatment of Kaposi's sarcoma in human immunodeficiency virus-positive patients. The Military Medical Consortium for Applied Retroviral Research

BACKGROUND

Patients who test positive for human immunodeficiency virus type 1 (HIV-1) and who have disfiguring and/or painful cutaneous lesions of Kaposi's sarcoma (KS) may not be candidates for systemic chemotherapy and/or immunotherapy. Intralesional vinblastine sulfate, as a single-agent chemotherapeutic drug, has been used with some success to treat KS in patients who are HIV-1 positive. However, some patients may not tolerate the pain associated with injection of vinblastine. Transcutaneous iontophoresis of vinblastine was evaluated for therapy of KS in HIV-1-infected patients. Prior to therapy of patients, we iontophoresed vinblastine into the normal skin of volunteers who were not infected with HIV-1 to document the clinical and histologic features that occurred.

OBSERVATIONS

Iontophoresis produced a localized erythematous papular eruption in non-HIV-infected volunteers but not in HIV-1-infected patients. Histologic changes in the biopsy specimens taken from non-HIV-infected volunteers consisted primarily of scattered necrotic keratinocytes and a mild to moderate superficial lymphohistiocytic infiltrate. Thirty-one lesions of KS were treated with partial to complete clearing and symptomatic improvement.

CONCLUSION

Clinical and histologic features of iontophoresed normal skin suggest an immunologic mechanism of action. Iontophoresis of vinblastine for KS is well tolerated and results in symptomatic improvement as well as varying degrees of clearing of the lesions.

Phase I bioavailability and pharmacokinetic study of hexamethylene bisacetamide (NSC 95580) administered via nasogastric tube

A Phase I clinical trial and pharmacological study of nasogastrically administered hexamethylene bisacetamide, a polar-planar compound with in vitro differentiating activity, was conducted in 14 adult patients with refractory cancer. Hexamethylene bisacetamide was administered as a 5% (w/v) solution via a nasogastric or gastrostomy tube every 4 h for 5 days, followed in 21 days by a 5-day continuous i.v. infusion at the same daily dose. Parenteral drug administration was then continued at the same interval in the absence of disease progression or unacceptable toxicity. Three patients each were treated at doses of 12 and 24 g/m2/day, while eight patients received a dose of 30 g/m2/day. Toxicity was comparable for both routes of drug administration at the above doses. Nasogastrically administered hexamethylene bisacetamide was well tolerated at the lower doses, whereas neurotoxicity and nausea and vomiting were the major, but manageable, toxicities at 30 g/m2/day. Metabolic acidosis, renal dysfunction, mucositis, and thrombocytopenia were the other commonly observed drug toxicities at this dose. No objective tumor responses were observed. Hexamethylene bisacetamide was rapidly absorbed from the gastrointestinal tract with a mean measured bioavailability of 99 +/- 15%. Pharmacokinetic parameters for hexamethylene bisacetamide and plasma concentrations of the two major metabolites, N-acetyl-1,6-diaminohexane and 6-acetamidohexanoic acid, were similar for either route of administration in individual patients. Hexamethylene bisacetamide exhibited apparent monoexponential plasma elimination after either nasogastric or parenteral administration with 27 to 60% of the administered dose being excreted in the urine as parent compound. Based on its demonstrated complete bioavailability and tolerability, nasogastric administration of hexamethylene bisacetamide can be directly and safely substituted for the comparable i.v. dose.

Enhancement of natural killer activity in human peripheral blood by flavone acetic acid

Natural killer cell activity and interferon (IFN) production were measured in 6 patients receiving flavone acetic acid for treatment of cancer. Natural killer cell activity was significantly increased in 3 of 6 patients receiving 6.4 g of flavone acetic acid/m2 by 3-hour iv infusion. Analysis of cell surface markers failed to reveal significant changes in any cell population. There was no evidence of induction of IFN-gamma, but 3 of 4 patients tested had evidence of induction of type I IFN, as measured in a virus neutralization assay.