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Biomedical subjects

R C Hall

Publications and source records attributed to R C Hall.

At least 127 records · Page 7Linked to original sources
PubMed1980

Physical illness manifesting as psychiatric disease. II. Analysis of a state hospital inpatient population.

One hundred patients of lower socioeconomic class were intensively evaluated medically on a research ward for the presence of unrecognized medical illnesses that might have affected their hospitalization. Forty-six percent were thought to have medical illnesses that directly caused or greatly exacerbated their symptoms and were consequently responsible for their admission, while an additional 34% of patients were found to be suffering from a medical illness requiring treatment. A diagnostic battery of physical, psychiatric, and neurologic examinations, coupled with a 34-panel automated blood analysis, complete blood cell count, urinanalysis, ECG, and sleep-deprived EEG established the presence and nature of more than 90% of the illnesses detected, and is therefore recommended as an initial evaluation battery, particularly for patients facing involuntary commitment to a mental hospital.

Adolescent↗
PubMed1980

Consultees' concordance with consultants' psychotropic drug recommendations. Related variables.

In an attempt to identify variables critical to consultees' concordance with the recommendations of psychiatric consultants for the use of psychotropic medications in a general hospital, the medical records from 394 psychiatric consultations were reviewed. Using quantitative concordance criteria, consultee response was examined as a function of 29 variables. These characterized the patient, the consultee, the consultant, and the consultation. Seven variables were found to be significantly related to concordance. Among these were the patient's history of exposure to psychotropic medications, the presence of multiple recommendations, specification of starting dosage, the category of psychotropic drug recommendation, and the timing of the consultation. The latter two variables emerged as most noteworthy. This work extends the investigation of consultees' responses to consultants' recommendations and anticipates the development of specific consultation strategies derived from quantitative outcome studies.

Attitude of Health Personnel↗
PubMed1980

Drug treatment of depression: a classification system for agent selection.

Depressive illness can be severe, debilitating, and life threatening, but it often responds well to medication. The appropriate agent and dosage depend not only on accurate diagnosis of the type of depression present but also on the age of the patient, previous response to various medications, concurrent medical conditions, other medications being taken, and potential side effects of the antidepressants being considered for treatment.

Adult↗
PubMed1980

The effect of referral procedures on aftercare compliance.

A study of four referral procedures involving 400 patients discharged consecutively from a geographically distant state hospital and referred to a community mental health center for aftercare suggests that simple changes in hospital discharge systems can increase compliance of patients and reduce recidivism. The scheduling of a specific follow-up appointment for the patient increased aftercare compliance significantly. Compliance was further increased, and the recidivism rate was cut in half, when the patient was seen by the community mental health aftercare nurse before discharge and was also given a specific follow-up appointment with that nurse.

Adult↗
PubMed1979

Direct gas chromatographic determination of carbamate pesticides using Carbowax 20M-modified supports and the electrolytic conductivity detector.

The gas chromatographic behavior of 32 carbamate pesticides was investigated using the Hall electrolytic conductivity detector. Relative retention indices were successfully determined for 24 carbamates on six different columns. Columns investigated included Ultra-Bond, 3% OV-101 on Ultra-Bond, 1% OV-17 on Ultra-Bond, 1% OV-210 on Ultra Bond, 1% Carbowax 20M on Ultra-Bond and 0.5% OV-210 + 0.65% OV-17 on Ultra-Bond. Chemical-ionization gas chromatography-mass spectrometry was used to verify that the carbamates were chromatographed intact. Chemical-ionization mass spectra are reported. Analytical procedures are demonstrated for the determination of carbamate residue in soil.

Carbamates↗
PubMed1979

Physicians' concordance with consultants' recommendations for psychotropic medication.

Physicians' concordance with the recommendations of psychiatric consultants regarding the use of psychotropic medications in a general hospital was retrospectively examined in an outcome study. Using medical records in a series of 200 consecutive consultations, the authors found 68% of all psychotropic recommendations resulted in physician responses rated concordant and 24% nonconcordant. Resultant concordance ratings are presented according to category of recommendation (that is, start, adjust, continue, or discontinue) and drug groupings. The data suggest that drug group is not a critical variable in physician concordance. Responses did differ by category of recommendation. Further study of physician concordance is desirable. The work suggests both the potential of and need for outcome studies in consultation work.

Humans↗
PubMed1979

Association between plasma and liver vitamin A levels in the calf; weanling pig, rabbit and rat; and adult goat fed fixed intakes of vitamin A.

To reexamine the relationship between plasma and liver vitamin A levels, data from various species of animals fed fixed intakes of vitamin A ester (expressed as retinol equivalents/kg liver weight/day) were vitamin A ester (expressed as retinol equivalents/kg live weight/day) were studied. The intakes ranging from deficient to toxic were for 48 calves, 4 to 17,600 micrograms; 39 pigs, 17.6 to 19,842 micrograms; 86 rabbits, 4.5 to 287 micrograms; 138 rats, 4 to 16,384 micrograms; and 40 goats, 1 to 17,640 micrograms. Following the feeding of these intakes for periods of between 5 and 133 weeks, blood and liver samples were taken for vitamin A determinations. Plasma vitamin A concentrations reached minimum values at low liver vitamin A levels whereas liver vitamin A levels reached maximum values at high plasma vitamin A concentrations. Upon elimination of data pairs at the extremes, linear regressions of log10 (total liver vitamin A) on plasma vitamin A concentrations and of plasma vitamin A concentrations on log10 (total liver vitamin A) were statistically significant. Therefore it was possible to estimate within limits the log10 (total liver vitamin A) from plasma vitamin A. Applicable limits were for the calf 8 to 46 micrograms/100 ml of plasma, for the pig 14 to 32, for the rabbit 14 to 74, for the rat 5 to 51 and for the goat 22 to 55. Simple correlation coefficients were 0.92, 0.60, 0.93, 0.92 and 0.75.

Aging↗
PubMed1979

Presentation of the steroid psychoses.

This study suggests that patients receiving daily doses of 40 mg of prednisone or its equivalent, are at greater risk for developing steroid psychosis. Psychotic reactions were twice as likely to occur during the first 5 days of treatment as subsequently. Premorbid personality, history of previous psychiatric disorder, and a history of previous steroid psychosis did not clearly increase the patient's risk of developing psychotic reaction during any given course of therapy. Steroid psychoses present as spectrum psychoses with symptoms ranging from affective through schizophreniform to those of an organic brain syndrome. No characteristic stable presentation was observed in these 14 cases reported here. The most prominent symptom constellation to appear some time during the course of the illness consisted of emotional lability, anxiety, distractibility, pressured speech, sensory flooding, insomnia, depression, perplexity, agitation, auditory and visual hallucinations, intermittent memory impairment, mutism, disturbances of body image, delusions, apathy, and hypomania. Phenothiazines administered in average daily doses of 212 mg produced excellent response in all patients studied. Of particular note was the fact that tricyclic antidepressants produced an exacerbation or worsening of the clinical state in all patients to whom they were administered.

Adrenal Cortex Hormones↗
PubMed1979

The effects of histamine on responses of the rabbit ear artery to electrical stimulation and to exogenous noradrenaline.

1 The effects of a subconstrictor dose of histamine (9 x 10(-7) mol/l) on the responses of the isolated perfused ear artery of the rabbit to electrical stimulation (E.S.) and to exogenous noradrenaline (NA) were investigated.2 Both intraluminal (I/L) and extraluminal (E/L) histamine potentiated responses to E.S. and to I/L NA to the same extent.3 Mepyramine alone (2.5 x 10(-6) mol/l) had no effect on the response of the ear artery to either stimulus, but in the presence of this concentration of mepyramine, the potentiation by histamine of the response to I/L NA was significantly decreased and that to E.S. was replaced by inhibition.4 The H(1)-receptor agonist, 2(2-pyridyl) ethylamine, applied I/L potentiated responses to I/L NA at both concentrations used (5.1 and 51 x 10(-7) mol/l), but only potentiated the effects of E.S. at the higher concentration.5 The H(2)-receptor antagonist, metiamide (4 x 10(-6) mol/l), alone did not alter the extent of potentiation of responses to either E.S. or I/L NA by histamine. This suggests relatively weak H(2)-receptor activity in the rabbit ear artery. In the presence, but not the absence of metiamide, the potentiation by histamine of the I/L NA response was reversible, an observation suggesting an interaction between metiamide and the non-reversible component of the potentiating effect of histamine.6 These results are interpreted in terms of postsynaptic H(1)-receptors which potentiate and presynaptic H(2)-receptors which inhibit contractile responses in the ear artery.

Animals↗
PubMed1979

Adjustment of a group of Vietnamese people to the United States.

The authors collected data on 50 Vietnamese families living in Baton Rouge, Louisiana, by individual and group interview questionnaire. They also used interviews of all of the Vietnamese people who came to the local community mental health center and studied the records of the center and other local social agencies for sociodemographic data. They define a number of specific sociological stresses encountered by Vietnamese refugees but conclude that basically these people are adjusting well without losing their cultural identity.

Adaptation, Psychological↗
PubMed1979

Lithium therapy and toxicity.

Lithium is a potent agent for the control of psychiatric disease. It is safe and effective when properly administered; however, its use requires a maximally informed physician and careful clinical monitoring of patients. The drug's side effects are usually dose related, and certain patients are at greater risk of experiencing toxicity than others. Management of acute intoxication involves gastric lavage, sodium replacement and the administration of other agents or dialysis to facilitate clearance.

Bipolar Disorder↗
PubMed1978

Physical illness presenting as psychiatric disease.

A study of 658 consecutive psychiatric outpatients receiving careful medical and biochemical evaluation, defined an incidence of medical disorders productive of psychiatric symptoms in 9.1% of cases. The most frequent presentations were of depression, confusion, anxiety, and speech or memory disorders. The presence of visual hallucinations was believed to indicate medical etiology until proved otherwise. Major illnesses presenting with psychiatric symptoms in order of frequency were infectious, pulmonary, thyroid, diabetic, hematopoietic, hepatic and CNS diseases. Forty-six percent of these patients suffered from medical illnesses previously unknown to either them or their physician. A plea is made for careful medical evaluation of psychiatric patients.

Adult↗