Sources and levels of progesterone during pregnancy in the garter snake, Thamnophis elegans.
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Biomedical subjects
Publications and source records attributed to R A Mead.
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Due to inherent difficulties in blood sampling in neonates, specimens for laboratory analyses are often obtained by heel puncture technique. While agreement between venous or arterial and capillary concentrations of some substances has been reported, that for gentamicin, when obtained by heel stick, has not. Simultaneously obtained heel stick (capillary) and umbilical artery (arterial) serum samples were analyzed for gentamicin concentrations in 20 preterm neonates. Further, 14 subjects underwent manual manipulation of the heel to encourage blood flow before sampling to test the effect of such manipulation on gentamicin concentration. The agreement between capillary and arterial serum concentrations of gentamicin was found to be excellent in infants greater than 1000 g body weight. Manipulation of the heel had no effect on this agreement.
A study was done to determine perceived importance of medication information and the kind of information provided to patients in an outpatient setting. A scale describing 14 points of medication information was used prior to the physician's visit in one study phase and afterwards in the second phase. Results showed that patients perceived all 14 items to be important but rated precautions to observe, drug interactions, and adverse effects most highly. Also, less than half the time was information considered highly important by patients provided by their physicians.