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Biomedical subjects

V Green

Publications and source records attributed to V Green.

At least 19 recordsLinked to original sources
PubMed1995

Termination in child analysis. A child-led process?

The paper begins by drawing attention to the disjunction between the theoretical conceptualizations of termination in child analysis and the process as it actually occurs. The central focus is on the process itself. Material is presented from four child analyses to illustrate the idiosyncratic ways in which the termination phase unfolded. The cases selected make it possible to consider termination in relation to each developmental phase. Our central argument is that, although the analyst should have certain criteria for termination in mind, termination in child analysis is essentially a child-led process.

Child↗
PubMed1994

Diarrhoeal disease in children in Gaza.

A 1-year prospective study in Gaza of diarrhoeal disease in children aged < 5 years demonstrated that Salmonella spp. (18.5% of cases), Cryptosporidium (14.6%), Campylobacter spp. (8.3%) and rotavirus (6.8%) were the major pathogens. However, when compared with non-diarrhoeic controls, only Cryptosporidium and rotavirus were significantly associated with diarrhoea. Cryptosporidiosis was found only in children aged < 2 years and significantly more children with cryptosporidiosis were malnourished. This malnutrition may have been due to the infection, since children with cryptosporidiosis tended to have had diarrhoea for relatively long periods prior to admission. It was not possible to distinguish between the different enteropathogens on clinical grounds. However, more children with rotavirus infection vomited and cryptosporidial diarrhoea lasted significantly longer (14.9 days) than rotavirus diarrhoea (5.9 days). Overcrowding was linked with an increased risk of cryptosporidiosis and breast feeding was associated with some protection. Twenty-one of the 29 children who died during the study died with diarrhoea and Cryptosporidium was detected in eight (38%) of these 21 children.

Age Factors↗
PubMed1994

Imaging in bone lengthening. A review.

Limb lengthening using callotasis needs careful preoperative planning and great care during the lengthening period. The most common method used to monitor limb lengthening is plain radiography, but the time of frame removal is still left to the judgment of the surgeon. This paper reviews some of the methods used experimentally and clinically to monitor the process, outlining their possible advantages and disadvantages for application in routine clinical practice. Considering availability, cost, and safety, an imaging protocol could involve preoperative assessment with computed tomography scan; immediate postoperative anteroposterior (AP) and lateral radiographs; weekly ultrasound scanning for the 1st 8 weeks; and monthly AP and lateral radiographs during the lengthening phase and if there is any clinical suspicion of complication during the consolidation phase. If available, dual energy bone densitometry can be performed every 2 to 4 weeks from 8 weeks, until removal of the fixator.

Absorptiometry, Photon↗
PubMed1993

Adolescent substance users: problem-solving abilities.

Cognitive ability and cognitive egocentrism were examined as predictors of problem-solving ability in adolescent substance users in a vocational training program. Problem-solving outcome variables were significantly predicted by two cognitive ability measures, as well as by measures of cognitive independence and egocentrism in thinking. Extent of substance use did not affect cognitive ability, cognitive egocentrism, or problem-solving ability.

Adolescent↗
PubMed1993

Female adolescent contraceptive decision making and risk taking.

In a modified replication of an earlier study, cognitive capacity, cognitive egocentrism, experience (sexual/contraceptive behaviors and attitudes), and demographic factors were assessed as predictors of decision making in a contraceptive use paradigm. Additionally, these factors were assessed as predictors of risk-taking behavior--"sensible" use of contraceptives. Sixty sexually active, unmarried females, ages 14-18, served as subjects. Cognitive capacity and cognitive egocentrism variables as well as age, grade, and ethnic status significantly predicted six of the seven decision-making variables. One cognitive capacity variable and one sexual/contraceptive behavior variable significantly predicted "sensible" use of contraceptives. These results are compared to the earlier study and discussed within the context of relevant literature.

Adolescent↗
PubMed1992

Influence of rapport on hypnotically induced pseudomemory.

Three studies examined the influence of rapport on pseudomemory. Study 1 tested eight groups of 22 subjects in a 2 (level of susceptibility: high, low) x 2 (state instruction: hypnosis, waking) x 2 (rapport: present, reduced) design, rapport being inhibited by the hypnotist criticizing subjects' performance. Pseudomemory was tested by a second experimenter who also criticized subjects. Study 2 varied level of susceptibility and rapport for 88 hypnotically instructed subjects where criticism was offered only by the second experimenter. Study 3 analyzed effects among 44 highly susceptible hypnotic subjects where the second experimenter refrained from criticizing subjects. Data indicated a significant association between rapport with the hypnotist and pseudomemory in cued recall, strength of pseudomemory being appreciably lowered when negative hypnotist rapport was reinforced by the person testing pseudomemory.

Adult↗
PubMed1992

Predictors of adolescent female decision making regarding contraceptive usage.

The relationship of cognitive capacity, cognitive egocentrism, and experience factors to decision making in a contraceptive usage problem was examined. Fifty sexually active, unmarried females, ages 14-19, served as subjects. Using correlational, regression, and canonical correlational analyses, cognitive capacity and cognitive egocentrism variables, not experience with contraceptives, were found to be significantly related to, and predictive of, five of seven decision-making variables. Forty-one percent of the variance was accounted for in predicting the canonical decision-making variable. The implications of these results for future research are discussed.

Adolescent↗
PubMed1988

The effect of erythrocyte associated light scattering on membrane fluorescence polarization.

The apparent membrane fluorescence anisotropy of 1,6-diphenyl-1,3,5-hexatriene has been reported to be lower in intact erythrocytes than in isolated erythrocyte membranes. Although this difference was once suggested to be caused by the fluidizing effect associated with the loss of erythrocyte proteins during membrane isolation, it is currently thought to be an artifact resulting from intense light scattering properties of intact erythrocytes which overwhelm extrapolation methods of correcting for light scattering. This study confirmed that, at erythrocyte concentrations greater than 10(7) cells/ml, this difference was caused by intense light scattering; however, at erythrocyte concentrations less than 4.0 X 10(6) cells/ml, the anisotropy values for erythrocytes and isolated membranes are identical, demonstrating that intense light scattering can be overcome with dilute suspensions of cells.

Erythrocyte Membrane↗
PubMed1986

The pharmacodynamic properties of lorazepam and methylphenidate drugs on event-related potentials and power spectral analysis in normal subjects.

The effect of lorazepam and methylphenidate on the ERPs and power spectral analysis was studied. Lorazepam caused prolonged latency and decreased amplitude of N200 and P300. This result suggests that lorazepam affects the neural processing of cognitive function. The drowsiness induced by lorazepam correlated inversely with alpha frequency power, but had no direct correlation with fast activity. On the contrary, when methylphenidate was given, there was no change in ERPs. There was an increase in percent alpha frequency correlated with the alertness of the subjects. An analysis of variance involving the factors of drug and time of rating showed that subjects showed a significant (p less than 0.0001) decrease in alertness over time while receiving lorazepam, and a significant (p less than 0.05) increase in alertness over time while receiving methylphenidate.

Adolescent↗
PubMed1985

Event-related potential in Alzheimer disease.

Auditory event - related potentials were studied in 20 patients with SDAT and 20 age and sex matched normal controls. Patients with SDAT showed prolonged latencies of N200 and P300 components. The mean amplitudes of N200 and P300 were lower in the SDAT group. This reflects the impairment of the speed of neural processing in patients with SDAT. There were no significant correlations of the progression of P300 latencies from mild to severe dementia according to global dementia scales.

Aged↗
PubMed1980

Maternal responsiveness of primiparous mothers during the postpartum period: age differences.

Variables influencing maternal responsiveness of primiparous mothers in the postpartum period were explored. Forty mothers, aged 17 to 24, were randomly assigned to either a control group, or to a group with one of two experimental conditions: additional information given mothers about the sensory capacity of neonates, or additional postpartum contact with their infants. Age differences in maternal responsiveness were also examined. Fourteen dependent measures of maternal behavior were obtained from video-taped sessions of mothers watching their infants. In addition, lateral preference of mothers for their infant following midline presentation was also noted. At the time of hospital discharge (a mean time of 3.5 days following birth) no differences were found on the dependent measures for either experimental condition. The age of the mother was isolated as a variable influencing maternal readiness. Mothers were divided into three age groups: low (17 and 18 years, N = 17), middle (19 and 20 years, N = 10), and high (21 to 23 years, N = 13). Age effects upon the 15 measures were assessed. The results suggest that there is a "critical" age when a mother may develop maternal readiness. Mothers 19 years of age and older demonstrated significantly more maternal responsiveness toward their infants than did mothers 18 years and younger.

Age Factors↗
PubMed1976

Hydrocarbon ingestion in children: a six-year retrospective study.

The results of a six-year retrospective study of 116 children admitted with the diagnosis of hydrocarbon ingestion showed that the major toxicity of hydrocarbons was to the respiratory tract, with 79 patients (68%) developing pneumonia. There was a significantly higher initial white blood cell count in children who developed pneumonia (15,900/cu mm vs 12,000/cu mm, p less than .001). All hydrocarbon products studied had a similar incidence of complicatons, except turpentine products, which had a significantly lower incidence of pneumonia (p less than .005). There was no correlation between amount ingested and development of complicatons. Initial treatment, which consisted of induced vomiting, gastric lavage, administration of oil or saline cathartics, was not associated with fewer complications. Oil administration correlated with higher incidence of pneumonia (p less than .025). The present study recomends only supportive treatment following hydrocarbon ingestion in children.

Cathartics↗