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Biomedical subjects

C A Long

Publications and source records attributed to C A Long.

98 records · Page 6Linked to original sources
PubMedDate not supplied

Effects of gallstone solvents on commonly used catheters.

PURPOSE: To determine what interaction and effect different cholesterol gallstone solvents have on catheters used for gallstone chemolysis. MATERIALS AND METHODS: Five types of catheters used for biliary procedures were chosen: polyethylene, Percuflex, silicon, Silitek, and polyurethane. The solvents chosen were methyl tert-butyl ether, ethyl propionate, isopropyl acetate, and N-propyl acetate. After incubation of the catheters in the solvents for 72 hours, they were air dried. Weight and area changes were determined for each catheter. Additionally, carbon-13 nuclear magnetic resonance (NMR) spectroscopy was performed for analysis of composition changes. RESULTS: Three catheters--silicone, Silitek, and polyurethane--showed changes in their physical characteristics that would make them less desirable for stone chemolysis. The silicone catheter showed changes in elastic texture as well as marked weight reduction. The Silitek and polyurethane catheters had similar, but less dramatic changes. C-13 NMR analysis of collected solvents showed that commonly used plasticizers were leached out of some catheters. CONCLUSION: These results suggest that all catheters are not suitable for use with all solvents. The choice of catheter should be made based on the solvent in use. The polyethylene catheter performed best under the conditions and endpoints used in this study.

Catheterization↗
PubMedDate not supplied

SIDS and infant positioning: implications for critical care.

This article will briefly review the literature that led to the AAP's recommendations of supine and side-lying positions for infants and explore the challenges and the controversy associated with changing standards and practices. It will discuss specific considerations for the critical care nurse and suggest points to consider in implementing any practice changes for seriously ill or critically ill infants.

Critical Care↗
PubMedDate not supplied

Cryotherapy: a new treatment for retinopathy of prematurity.

More than 2,600 infants have some degree of eye damage and loss of vision from retinopathy of prematurity (ROP) each year in the United States. Transcleral cryotherapy, a treatment that has been shown to decrease vision loss due to ROP by 50%, is now being used in the United States.

Aftercare↗
PubMedDate not supplied

Central line associated bacteremia in the pediatric patient.

PURPOSE: To define the per-day risk of central line associated bacteremia in an infant-toddler population and to describe risk factors associated with the development of central line bacteremia. METHOD: The Central Line Data Tool collected information on 102 central venous catheters from 73 patients ranging in age from 1 day to 29 months. Each line was in place for 3 days or longer. FINDINGS: There were 17 documented catheter-related infections during the 1-year study period (7.7 infections per 1,000 catheter days). Factors significantly associated with central line bactermia included: PAS infusion, catheter type and site, medication administration, blood withdrawal, and accidental line disruption. CONCLUSIONS: Use of central lines for multiple purposes should be minimized.

Bacteremia↗