Phenylephrine added to prophylactic ephedrine infusion during spinal anesthesia for elective cesarean section.

Background: Because ephedrine infusion (2 mg/min) does not adequately prevent spinal hypotension during cesarean delivery, the authors investigated whether adding phenylephrine would improve its efficacy.

Methods: Thirty-nine parturients with American Society of Anesthesiologists physical status I-II who were scheduled for cesarean delivery received a crystalloid preload of 15 ml/kg. Spinal anesthesia was performed using 11 mg hyperbaric bupivacaine, 2.

Information-processing differences and laterality of students from different colleges and disciplines.

1023 college students were assessed for hemispheric brain dominance using the paper-and-pencil test, the Human Information Processing Survey. Analysis of scores of students majoring in Advertising, Interior Design, Music, Journalism, Art, Oral Communication, and Architecture suggested a preference for right-brain hemispheric processing, while scores of students majoring in Accounting, Management, Finance, Computer Science, Mathematics, Nursing, Funeral Service, Criminal Justice, and Elementary Education suggested a preference for left-hemispheric strategies for processing information. The differential effects of hemispheric processing in an educational system emphasizing the left-hemispheric activities of structured logic and sequential processing suggests repression of the intellectual development of those students who may be genetically favorable to right-hemispheric processing.

Allosteric regulation of glycerol kinase by enzyme IIIglc of the phosphotransferase system in Escherichia coli and Salmonella typhimurium.

The mechanism by which enzyme IIIglc of the bacterial phosphotransferase system regulates the activity of crystalline glycerol kinase from Escherichia coli has been studied, and the inhibitory effects have been compared with those produced by fructose-1,6-diphosphate. It was shown that the free, but not the phosphorylated, form of enzyme IIIglc inhibits the kinase. Mutants of Salmonella typhimurium were isolated which were resistant to inhibition by either enzyme IIIglc (glpKr mutants) or fructose-1,6-diphosphate (glpKi mutants), and each mutant type was shown to retain full sensitivity to inhibition by the other regulatory agent.

Maintenance of high-density lipoprotein blood levels prior to spontaneous abortion in pig-tailed macaques (Macaca nemestrina).

Blood was drawn throughout the first half of the pregnancies of 24 pig-tailed macaques (Macaca nemestrina) to evaluate longitudinal high-density lipoprotein (HDL) changes. In all 15 normal pregnancies, HDL decreased at least 50%; the mean value for the group fell from 0.45 gm/liter to 0.

An extrapolation of the physical attractiveness and sex variables within the Byrne attraction paradigm.

Twenty male and 20 female volunteer general psychology students were assigned to one of four treatment conditions in a totally randomized 2 by 2 ANOVA to test the hypothesis that subjects would perceive attractive strangers of the opposite sex as possessing attitudes similar to their own. Physical attractiveness was defined in terms of independent ratings via a Q sort of 74 male and 74 female yearbook pictures. The ANOVA yielded a significant main effect for attractiveness.