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Biomedical subjects

B L Green

Publications and source records attributed to B L Green.

14 recordsLinked to original sources
PubMed1992

Chronic posttraumatic stress disorder and diagnostic comorbidity in a disaster sample.

Research has indicated significant comorbid psychopathology with chronic posttraumatic stress disorder (PTSD) in samples of war veterans. The present paper examines the issue of comorbidity in a disaster sample to learn whether findings from veterans generalized to this event. A total of 193 subjects exposed to the Buffalo Creek dam collapse of 1972 were examined 14 years later using diagnoses derived from the Structured Clinical Interview for DSM-III (SCID). Past and present PTSD was found in a significant portion of the sample. Major depression was the next most common diagnosis and was highly related to PTSD. Anxiety disorders were also common. The overlap with other diagnoses was quite similar to that found in a sample of Vietnam veterans we studied earlier, except that the disaster sample had fewer dysthymic disorders, substance abusers, and antisocial personality disorders. Possible explanations for comorbidity in chronic PTSD were discussed and it was suggested that the morphology of PTSD may be quite stable in at least some other nonveteran trauma populations.

Ambulatory Care↗
PubMed1992

Somatic reenactment in the treatment of posttraumatic stress disorder.

Somatic reenactments, like other intrusive symptoms in post-traumatic stress disorder, such as flashbacks and nightmares, reproduce the mental content of traumatic events. Four cases are presented from survivors of military trauma and civilian catastrophes. The patients were part of larger research projects carried out by the University of Cincinnati Traumatic Stress Study Center. Understanding such symptoms as repetitions of the trauma itself proved useful therapeutically, especially in consolidating the working alliance.

Adaptation, Psychological↗
PubMed1991

Autoclave inactivation of infectious radioactive laboratory waste contained within a charcoal filtration system.

A model system was developed previously for disposal of solid laboratory waste that is both radioactive and heat sensitive, e.g., HIV. A double polypropylene bag with charcoal vent filter and absorbent was designed to meet requirements for both steam sterilization and disposal as solid radioactive waste. Earlier work demonstrated the effective containment of radioactive gases by the filter and inactivation of organisms as heat sensitive as HIV. We sought to broaden the application of this model to ensure inactivation of microorganisms that are more heat resistant than HIV. The efficacy of steam sterilization using water or solutions of iodophor, hypochlorite, or hydrogen peroxide was studied under constant temperature and time conditions. The systems were monitored with internal probes, physical, chemical, and biological indicators. Biological indicators documented inactivation when bags containing hydrogen peroxide (3%) were autoclaved for 60 min at 121 degrees C. Synergistic activity between hydrogen peroxide and autoclave conditions significantly reduced processing time.

Charcoal↗
PubMed1991

Children and disaster: age, gender, and parental effects on PTSD symptoms.

Psychiatric reports of 179 children aged 2 to 15 who were exposed to the Buffalo Creek dam collapse in 1972 were rated for post-traumatic stress disorder (PTSD) symptoms 2 years after the disaster. Age and gender effects and the impact of the level of exposure and parental functioning were examined according to a conceptual model addressing factors contributing to adaptation to a traumatic event. Results showed fewer PTSD symptoms in the youngest age group and higher symptom levels for girls than boys. Approximately 37% of the children were given a "probable" diagnosis of PTSD. Multiple regression analysis showed that life threat, gender, parental psychopathology, and an irritable and/or depressed family atmosphere all contributed to the prediction of PTSD symptomatology in the children.

Adaptation, Psychological↗
PubMed1977

Two-temperature membrane filter method for enumerating fecal coliform bacteria from chlorinated effluents.

Reports indicate that the standard membrane filter (MF) technique for recovery of fecal coliform bacteria from chlorinated sewage effluents is less effective than the multiple-tube (or most-probable-number [MPN]) procedure. A modified MF method was developed that requires a preincubation period of 5 h at 35 degrees C followed by 18+/-1 h at 44.5 degrees C. This procedure was evaluated by using both laboratory- and plant-chlorinated primary and secondary effluents. Results obtained by the modified MF method compared favorably with those of the MPN technique for the enumeration of fecal coliforms from chlorinated effluent. Agreement between these two methods was greatest with samples from secondary treatment plants. The average recovery of fecal coliforms by the standard MF procedure was only 14% that of the MPN method, whereas with the modified technique recovery was increased to 68% of the MPN counts. Enhanced recovery resulting from a simple modification in the incubation schedule makes the MF method a valuable adjunct for enumerating fecal coliforms from chlorinated effluents.

Bacteriological Techniques↗
PubMed1977

Calcium hydroxide and potassium nitrate as desensitizing agents for hypersensitive root surfaces.

The purpose of this investigation was to evaluate calcium hydroxide and potassium nitrate individually as densensitizing agents for hypersensitive root surfaces. The apparatus used in the experiment to measure hypersensitivity was (a) a thermo-electric stimulating device to measure hot and cold stimulation quantitatively and (b) a mechanical stimulating device to measure scratch stimulation quantitatively. The conclusions drawn from the study were: 1. Calcium hydroxide was more consistently effective in decreasing sensitivity then was potassium nitrate or the control. 2. Calcium hydroxide as compared to the control was statistically (99% level of significance) more effective in reducing sensitivity to mechanical, hot and cold stimulation immediately and at the conclusion of the experiment (3 months). 3. It appears that calcium hydroxide could be used as a desensitizing agent initially following periodontal surgery to reduce pain from hypersensitive roots in order that proper oral hygiene could be reestablished.

Adult↗
PubMed1975

Impact of psychosocial factors on the conduct of combined drug and psychotherapy research.

The effect of attitudes of therapists, patients and researchers on the conduct and outcome of combined drug and psychotherapy research was examined in a brief crisis-oriented psychotherapy clinic. Seventy-seven consecutive patients were given one of two anti-anxiety drugs or a placebo in conjunction with the typical psychoanalytically-oriented treatment used in the clinic. The therapists' attitudes favouring psychotherapy over drug therapy (and psychotherapy research) were clearly conveyed to the patients. Indicative of this are the following: (a) 82 per cent of the patients dropped out of drug taking, although a similar percentage remained in treatment; (b) only a third of the patients perceived it as being important to their therapists that they should take medication; (c) 87 per cent of the patients were rated as improved; and 75 per cent of patients completing forms considered that most or all of their improvement was attributable to talking. The research team, made up of members of the same department who therefore had similar values as the therapists, diligently collected outcome data, but ignored its responsibility to enforce drug-relation portions of the protocol. Overall, patients remained in therapy, improved and participated in completing forms, so that only the research goals of combined therapy were thwarted, while traditional clinic service and training goals proceeded as usual.

Adolescent↗