Preventing hypokalemia in critically ill patients.

Background: Many therapies used in critical care cause potassium depletion. Current practice relies on potassium replacement protocols after a patient becomes hypokalemic. Potassium bolus therapy creates risk for patients, is costly, and increases nurses' workload.

Psychology of computer use: XLII. Problem solving and humor as a function of computer anxiety.

From a pool of 115 undergraduate women, 20 were placed in a Computer-anxious group and 20 in a Computer-nonanxious group based on their scores on the Computer Anxiety Scale. Half of the subjects were randomly assigned to a group to which the computer presented the problems first and half to a group to whom the computer presented the jokes first. Electromyograms from subjects' zygomatic muscles were monitored as well as palmar skin conductance.

Effect of Single Dose Fluoxetine on Theophylline Serum Concentrations.

Fluoxetine has been previously reported to elevate plasma concentrations of several hepatically metabolized medications. Eight healthy male volunteers received intravenous aminophylline (approximately 6 mg kg(minus sign1)) on two occasions separated by 2 weeks. A 40-mg dose of oral fluoxetine was administered 8 h prior to the second administration of fluoxetine.

Hepatic dysoxia commences during O2 supply dependence.

Hepatic O2 consumption (VO2) remains relatively constant (O2 supply independent) as O2 delivery (DO2) progressively decreases, until a critical DO2 (DO2c) is reached below which hepatic VO2 also decreases (O2 supply dependence). Whether this decrease in VO2 represents an adaptive reduction in O2 demand or a manifestation of tissue dysoxia, i.e.

Effect of exposure to humorous stimuli on induced depression.

In testing the hypothesis that exposure to humor may be used to relieve the symptoms of depression, 38 female undergraduates were shown depressive slides of the Velten (1968) mood statements and then assigned to one of three groups. One group heard a humorous audiotape, the second group heard a nonhumorous tape, while a third waiting control heard no tape. Heart rate and zygomatic (smile) and corrugator (frown) muscle tensions were recoreded during slide and tape presentations.