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Biomedical subjects

M H Davis

Publications and source records attributed to M H Davis.

At least 37 records · Page 2Linked to original sources
PubMed1996

Electroconvulsive therapy in the very old.

At least one study has questioned the safety of electroconvulsive therapy (ECT) in the very old. In this study, the authors reviewed a 5-year experience with ECT at two university psychiatric services for patients 75 years of age or older. Both outcomes and complications were reviewed. Nineteen of 22 patients (86.3%) were ECT responders. Five patients (22.7%) suffered complications which varied from minor to substantial. ECT was found to be an effective and reasonably safe treatment for depression in the very old.

Aged↗
PubMed1996

Effect of perspective taking on the cognitive representation of persons: a merging of self and other.

Two experiments examined the possibility that perspective taking leads observers to create cognitive representation of others that substantially overlap with the observers' own self-representations. In Experiment 1 observers receiving role-taking instructions were more likely to ascribe traits to a novel target that they (observers) had earlier indicated were self-descriptive. This pattern was most pronounced, however for positively valenced traits. In Experiment 2 some participants received role-taking instructions but were also given a distracting memory task. In the absence of this task, role taking again produced greater overlap--primarily for positive traits--between self- and target representations. In the presence of the memory task, the degree of self-target overlap was significantly reduced for all traits, regardless of valence. Possible explanations for these findings are discussed.

Adult↗
PubMed1996

Profile of persons with disabilities in Medicare and Medicaid.

This DataView presents descriptive information on beneficiaries with disabilities in Medicare and Medicaid. Medicare data show that persons with disabilities have more functional limitations, poorer health status, lower incomes, and experience more barriers to health care than aged Medicare beneficiaries. Medicaid data reveal that significant growth in the Medicaid disabled population has led to the disabled outnumbering the Medicaid-eligible elderly. Additionally, Medicaid serves an increasingly younger disabled population and more persons with mental impairments.

Demography↗
PubMed1995

Role of ambulatory care for student-patient interaction: the EPITOME model.

In undergraduate medical education, a shift away from in-patient teaching towards greater use of the ambulatory care setting is occurring. This paper looks at what effect this change in emphasis might have on students' clinical competence. A log-book approach was used to study final-year orthopaedic students' opportunities to interact with patients in the wards and out-patient clinics at the University of Dundee Medical School. Students perceived that similar opportunities to interact with patients to develop and improve their clinical skills were provided by both settings. The study showed that much greater use could be made of both settings for clinical skills teaching. While students were not enthusiastic about the log-book approach, it stimulated their thinking. It is concluded that student opportunities to develop clinical skills will not be adversely affected by the trend towards ambulatory care teaching. There should be more clinical teaching in the out-patient setting.

Ambulatory Care↗
PubMed1995

Three decades of Medicare: what the numbers tell us.

The Medicare program was first implemented to meet a critical need in American society, and over its thirty-year history it has evolved into an integral part of the U.S. health care system. This DataWatch provides a broad overview of the program, outlining both historical and current trends in coverage, financing, payment mechanisms, beneficiary status, benefits, and spending.

Aged↗
PubMed1994

Two social worlds: social correlates and stability of adolescent status groups.

Adolescents' peer group status in high school was examined using self-report, peer nominations, and archival data collected during 2 consecutive school years. Higher status students (popular and controversial) had more close friends, engaged more frequently in peer activities, and self-disclosed more than lower status students (rejected and neglected). They were also more involved in extracurricular school activities and received more social honors from their schoolmates. Although the higher status students were more alike than different, controversial adolescents did report more self-disclosure and dating behavior than popular students. Lower status students were also highly similar, although rejected students reported lower grades. Regarding the temporal stability of these status groups, the adolescent sample exhibited slightly higher overall stability than that found in previous investigations of younger children.

Adolescent↗
PubMed1994

Obsessive-compulsive disorder responsive to electroconvulsive therapy in an elderly woman.

An elderly woman with a long history of obsessive-compulsive disorder (OCD) was treated with electroconvulsive therapy (ECT) after intractable depression developed. OCD had been well established for many years before onset of the depressive symptoms. After ECT, there was resolution of both OCD and depression. The patient eventually had relapse and was treated with maintenance ECT.

Aged↗
PubMed1994

Comparison of student learning in the out-patient clinic and ward round.

In undergraduate medical education there is a trend away from ward-based teaching towards out-patient and community-based teaching. To study the potential effects of this altered emphasis on student learning, a pilot group of final-year medical students at the University of Dundee was asked to keep individual structured log-books. These contained details of patients seen during their 3-week orthopaedic attachment in both a ward and out-patient setting. A comparison of perceived learning in the two settings showed that students learned more from attending an out-patient clinic than a ward round, but did not make full use of the learning potential of either. The setting did not particularly influence the balance of learning as categorized here but only the ward round supplied experience of surgical complications. The amount of learning taking place in an out-patient clinic was influenced by student ability, measured by examination performance, but not by clinic work-load. The implications of increased use of out-patient clinics and the advantages and disadvantages of the approach employed are discussed. It is concluded that in the situation studied student learning in the outpatient setting is as good as or superior to the ward setting but should not totally replace it.

Ambulatory Care↗
PubMed1994

The heritability of characteristics associated with dispositional empathy.

This investigation used data from Loehlin and Nichols's (1976) study of over 800 sets of twins to examine evidence for the heritability of three facets of empathy: empathic concern, personal distress, and perspective taking. Expert judges first identified sets of adjectives, included within Loehlin and Nichols's original data, which reflected each empathy construct; these items were then validated in an independent sample. Comparisons of the responses given to these items by identical and fraternal twins in the Loehlin and Nichols investigation revealed evidence of significant heritability for characteristics associated with the two affective facets of empathy--empathic concern and personal distress--but not for the nonaffective construct of perspective taking. This pattern is consistent with the view that temperamental emotionality may underlie the heritability of affective empathy.

Adolescent↗
PubMed1994

Topics for general dental practioner continuing education: survey of Scottish views.

The provision of continuing education for general dental practitioners is expanding with a bewildering range of presentation methods and variation in quality. The first stage in the development of any educational programme should be identification of target audience needs, but little has been published on this subject. To draw the attention of providers of continuing education material to the perceived needs of general dental practitioners in one geographical region, a questionnaire survey was employed. Scottish general dental practitioners were asked to identify topics on which they needed continuing education. Sixty-five per cent responded. Conservative dentistry and periodontology were requested most frequently. The reasons for this and the wide range of topics requested are discussed.

Attitude of Health Personnel↗
PubMed1993

The quality of the new birth certificate data: a validation study in North Carolina.

A random sample of 395 December 1989 North Carolina birth certificates and the corresponding maternal hospital medical records were examined to validate selected items. Reporting was very accurate for birth-weight, Apgar score, and method of delivery; fair to good for tobacco use, prenatal care, weight gain during pregnancy, obstetrical procedures, and events of labor and delivery; and poor for medical history and alcohol use. This study suggests that many of the new birth certificate items will support valid aggregate analyses for maternal and child health research and evaluation.

Birth Certificates↗
PubMed1992

General dental practitioners' needs for continuing education on the management of fissure caries.

A process of identifying GDPs' perceptions of their needs for continuing education on one topic area is described. The method employed a combination of two traditional approaches for assessing educational needs, the so-called 'wisemen' approach and interviews with members of the target audience. The process identified three groups of GDPs with differing educational needs. Their perceptions of their educational needs are described, and the advantages and disadvantages of the process discussed and compared with other methods of assessing educational needs. The study confirmed the importance of identifying educational needs in the development of an educational programme.

Dental Fissures↗
PubMed1992

GDPs' and specialists' decisions in the management of fissure caries.

As part of a continuing education programme in dentistry, four specialists and 27 selected general dental practitioners were asked to rate 58 clinical management options relating to fissure caries in six simulated patient management problems called challenges. Their ratings are presented and the advantages and disadvantages of the approach are discussed. Areas of agreement and disagreement are highlighted and possible reasons for these explored.

Composite Resins↗
PubMed1992

Continuing education for general dental practitioners using a printed distance learning programme.

This paper describes the development of a printed distance learning programme by a coordinated team approach. The programme has two components, a resource book and three patient management problem leaflets or challenges and is designed to update general dental practitioners on the management of fissure caries. It includes strategies to meet the educational needs of three groups of general dental practitioners with different educational requirements. It is concluded that the approach described meets the CRISIS criteria for effective continuing education and offers a useful approach to distance learning in dentistry.

Education, Dental, Continuing↗
PubMed1990

Utilizing cognitive therapy on the short-term psychiatric inpatient unit.

Cognitive therapy as applied to the short-term psychiatric inpatient unit is explored. The authors provide an overview of the cognitive model and the utilization of cognitive-behavioral therapies for a variety of diagnostic categories. Adaptations of cognitive techniques to the inpatient unit are described and illustrated through case presentations.

Adaptation, Psychological↗
PubMed1989

Kinetic properties of the Na+/H+ antiport of heart mitochondria.

The fluorescence of 2',7'-bis(carboxyethyl)-5(6)-carboxyfluorescein (BCECF) has been used to follow the Na+/H+ antiport activity of isolated heart mitochondria as a Na+-dependent extrusion of matrix H+. The antiport activity measured in this way shows a hyperbolic dependence on external Na+ or Li+ concentration when the external pH (pHo) is 7.2 or higher. The apparent Km for Na+ decreases with increasing pHo to a limit of 4.6 mM. The Ki for external H+ as a competitive inhibitor of Na+/H+ antiport averages 3.0 nM (pHo 8.6). The Vmax at 24 degrees C is 160 ng ion of H+ min-1 (mg of protein)-1 and does not vary with pHo. Li+ reacts with the antiporter with higher affinity, but much lower Vmax, and is a competitive inhibitor of Na+/H+ antiport. The rate of Na+/H+ antiport is optimal when the pHi is near 7.2. When pHo is maintained constant, Na+-dependent extrusion of matrix H+ shows a hyperbolic dependence on [H+]i with an apparent Km corresponding to a pHi of 6.8. The Na+/H+ antiport is inhibited by benzamil and by 5-N-substituted amiloride analogues with I50 values in the range from 50 to 100 microM. The pH profile for this inhibition seems consistent with the availability of a matrix binding site for the amiloride analogues. The mitochondrial Na+/H+ antiport resembles the antiport found in the plasma membrane of mammalian cells in that Na+, Li+, and external H+ appear to compete for a common external binding site and both exchanges are inhibited by amiloride analogues.(ABSTRACT TRUNCATED AT 250 WORDS)

Amiloride↗