More Experiments in Ethics

This paper responds to the four critiques of my book Experiments in Ethics published in this issue. The main theme I take up is how we should understand the relation between psychology and philosophy. Young and Saxe believe that “bottom line” evaluative judgments don’t depend on facts. I argue for a different view, according to which our evaluative and non-evaluative judgments must cohere in a way that makes it rational, sometimes, to abandon even what looks like a basic evaluative judgment because we have changed our minds about the facts. This leads me to qualify Tiberius’s claim that our moral judgments always derive, in part, from fundamental evaluative “justificatory stopping points,” arguing that even these can themselves be adjusted in the light of scientific understanding. Weinberg and Wang object to my use of Kant’s distinction between the perspective of the senses and the perspective of the understanding, because they identify it with a distinction between scientific and philosophical worlds. I argue that a distinction of perspectives isn’t a distinction between worlds and that, in any case, the distinction is not between science and ethics. Finally, in responding to Machery’s objections to a couple of my proposals, I return to the suggestion that a coherentist epistemology is required to deal with the relations between science and ethics.     

Diagnosis and treatment of adrenal insufficiency in the critically ill patient

The reported incidence of adrenal insufficiency varies greatly depending on the population of critically ill patients studied, the test and cutoff levels used, and the severity of illness. Several studies have shown increased mortality in patients with very low or very high baseline cortisol levels. Manifestations of adrenal insufficiency in the critically ill patient are numerous and nonspecific, so clinicians are urged to have a high index of suspicion and be alert to important diagnostic clues, such as hyponatremia, hyperkalemia, and hypotension, that are refractory to fluids and vasopressors without any clear causation. Multiple tests have been developed to diagnose adrenal insufficiency, but the most commonly used test in the intensive care unit is the adrenocorticotropic hormone (ACTH) stimulation test. The low-dose ACTH stimulation test has been shown to be more sensitive and specific than the high-dose test; however, the high-dose test is preferred since the low-dose test has not been validated. Although diagnosing adrenal insufficiency continues to be difficult in the critically ill patient, administration of high-dose corticosteroids, defined as methylprednisolone 30 mg/kg/day or more (or its equivalent), over a short period of time provides no overall benefit and may even be harmful; however, administration of low-dose corticosteroids for a longer duration decreases both the amount of the time that vasopressors are required and mortality at 28 days. Hydrocortisone 200-300 mg/day, administered in divided doses or as a continuous infusion, is the preferred corticosteroid in patients with septic shock and should be started as early as possible. For patients in whom the ACTH stimulation test cannot be given immediately, clinicians are urged to consider using dexamethasone until such time that the test can be administered, since, unlike hydrocortisone, it does not interfere with the cortisol test.     

Evaluation of albumin microspheres as oral delivery system for Mycobacterium tuberculosis vaccines

Mucosal immunization has been suggested to be the best option for preventing Mycobacterium tuberculosis infection. The purpose of this study was to develop albumin microspheres containing Mycobacterium tuberculosis antigens and to determine if oral administration of the microspheres can induce antigen-specific mucosal and systemic immune responses. Albumin microspheres containing Mycobacterium tuberculosis dead cells and cell lysate were prepared. The physico-chemical characteristics of the formulations were determined and the microspheres were administered to animal models to evaluate the induction of immune responses to the antigens. The results showed that the particle sizes, zeta potential and dissolution pattern of the microspheres were ideal for oral delivery of vaccines. In vivo studies showed high production of antigen-specific antibody production in serum, nasal, salivary and faecal samples. From the results of the study, it can be concluded that oral administration of Mycobacterium tuberculosis microspheres was successful in inducing antigen-specific systemic and mucosal immune responses.     

Biological, life course, and cross-cultural studies all point toward the value of dimensional and developmental ratings in the classification of psychosis

The diagnostic criteria for schizophrenia in the fourth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV¹) are based on the premise that it is a discrete illness entity, in particular, distinct from the affective psychoses. This assumption has persisted for more than a century, even though patients with a diagnosis of schizophrenia show a wide diversity of symptoms and outcomes, and no biological or psychological feature has been found to be pathognomonic of the disorder. However, there has been sustained, and indeed growing, criticism of the concept. For example, writing about the diagnosis of schizophrenia more than a decade ago,² one of Britain''s most sophisticated nosological experts, Ian Brockington, enjoined “It is important to loosen the grip which the concept of ‘schizophrenia’ has on the minds of psychiatrists. Schizophrenia is an idea whose very essence is equivocal, a nosological category without natural boundaries, a barren hypothesis. Such a blurred concept is ‘not a valid object of scientific enquiry’.”³ Should Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition(DSM-V), persist with the neo-Kraepelinian concept of schizophrenia with all its defects, or should it deconstruct psychosis into its component dimensions? In this article, we will address the question by considering 2 main themes, firstly, the role of culture and ethnicity in the diagnosis of psychosis, and secondly, a life course approach to understanding psychosis. We will then discuss whether more progress would be achieved in DSM-V by abandoning the familiar categorical system and instead moving to a dimensional system which rates both developmental impairment and symptom factor scores. However, we will begin by briefly reviewing the recent history of the classification of the psychoses.     

Patient perspectives on quality of care for depression and anxiety in primary health care teams: A qualitative study

BackgroundWidespread policy reforms in Canada, the United States and elsewhere over the last two decades strengthened team models of primary care by bringing together family physicians and nurse practitioners with a range of mental health and other interdisciplinary providers. Understanding how patients with depression and anxiety experience newer team‐based models of care delivery is essential to explore whether the intended impact of these reforms is achieved, identify gaps that remain and provide direction on strengthening the quality of mental health care.ObjectiveThe main study objective was to understand patients’ perspectives on the quality of care that they received for anxiety and depression in primary care teams.MethodsThis was a qualitative study, informed by constructivist grounded theory. We conducted focus groups and individual interviews with primary care patients about their experiences with mental health care. Focus groups and individual interviews were recorded and transcribed verbatim. Grounded theory guided an inductive analysis of the data.ResultsForty patients participated in the study: 31 participated in one of four focus groups, and nine completed an individual interview. Participants in our study described their experiences with mental health care across four themes: accessibility, technical care, trusting relationships and meeting diverse needs.ConclusionGreater attention by policymakers is needed to strengthen integrated collaborative practices in primary care so that patients have similar access to mental health services across different primary care practices, and smoother continuity of care across sectors. The research team is comprised of individuals with lived experience of mental health who have participated in all aspects of the research process.     

Social capital and psychiatry: review of the literature

Social capital is an umbrella term used to describe aspects of social networks, relations, trust, and power, as a function of either the individual or a geographical entity (e.g., a city neighborhood). Increased attention is being paid to the role that social capital can play in determining a variety of physical health outcomes, though less attention has been paid to its role in determining mental health outcomes. This relative inattention continues despite a long historical tradition in psychiatry of exploring the role that socio-environmental factors can play in the etiology and course of mental illness. In this review, we begin by tracing the historical development of the concept of social capital, describing and analyzing competing definitions. We then proceed to review the published studies that examine the relationship between social capital and mental health-looking first at studies that focus on depression and anxiety, and second at studies that focus on psychoses. After briefly exploring whether social capital can have a detrimental effect on mental health, we discuss how knowledge regarding social capital may aid the clinician and mental health services. We go on to make a number of suggestions relevant to methodological, theoretical, and empirical advancement. These suggestions include refining the definitions of social capital, paying attention to communities without propinquity, and constructing contextual indicators of social capital. We conclude by remarking that social capital may be a promising heuristic for studies in community psychiatry and may even help individual clinicians in designing treatment plans. Despite all this promise, however, there is a lack of strong evidence supporting the hypothesis that social capital protects mental health.     

Pulmonary alveolar septal amyloidosis

Summary A case of primary amyloidosis is presented which diffusely involved the alveolar septa. The lung was studied by light microscopy and by transmission and scanning electron microscopy. The fine structure of the amyloid material showed it to be porous, homogeneous, and an acellular substance consisting of interwoven bundles of amyloid fibrils.The fine structure of the amyloid material was considered to explain the normal gas diffusion across the alveolar respiratory membrane.The diagnosis of amyloidosis was first made from a uterine cervical biopsy specimen.