Acquired immunodeficiency syndrome and malnutrition: role of gastrointestinal pathology

The development of professional identity and the formation of teams in the Veterans Affairs Connecticut Healthcare System's Center of Excellence in Primary Care Education Program (CoEPCE)

PURPOSE

The United States Department of Veterans Affairs Connecticut Healthcare System (VACHS) is one of five Centers of Excellence in Primary Care Education (CoEPCE) pilot sites. The overall goal of the CoEPCE program, which is funded by the Office of Academic Affiliations, is to develop and implement innovative approaches for training future health care providers in postgraduate education programs to function effectively in teams to provide exceptional patient care. This longitudinal study employs theoretically grounded qualitative methods to understand the effect of a combined nursing and medical training model on professional identity and team development at the VACHS CoEPCE site.

METHOD

The authors used qualitative approaches to understand trainees' experiences, expectations, and impressions of the program. From September 2011 to August 2012, they conducted 28 interviews of 18 trainees (internal medicine [IM] residents and nurse practitioners [NPs]) and subjected data to three stages of open, iterative coding.

RESULTS

Major themes illuminate both the evolution of individual professional identity within both types of trainees and the dynamic process of group identity development. Results suggest that initially IM residents struggled to understand NPs' roles and responsibilities, whereas NP trainees doubted their ability to work alongside physicians. At the end of one academic year, these uncertainties disappeared, and what was originally artificial had transformed into an organic interprofessional team of health providers who shared a strong sense of understanding and trust.

CONCLUSIONS

This study provides early evidence of successful interprofessional collaboration among NPs and IM residents in a primary care training program.

Improved body weight status as a result of nutrition intervention in adult, HIV-positive outpatients

OBJECTIVE

Malnutrition is an important consequence of infection with the human immunodeficiency virus (HIV); involuntary weight loss greater than 10% is one criterion that the Centers for Disease Control and Prevention uses for the diagnosis of acquired immunodeficiency syndrome (AIDS). This study was designed to determine whether nutrition intervention in a group of adult, HIV-positive outpatients affected weight maintenance.

METHODS

We undertook a retrospective review of 175 patient charts from the AIDS Reproductive Health Clinic and the Center for Special Studies at The New York Hospital. Forty-nine charts were excluded because the patient expressed a desire to reduce weight, discontinued medical care, or died. Seven charts were eliminated because of missing data. In the remaining patients (n = 119), weights were recorded for the initial clinic contact and for a follow-up visit at least 6 months later. Nutrition intervention completed by a registered dietitian was indicated on 42 patient charts (intervention group); intervention included dietary assessment, intake analysis, appropriate counselling, follow-up, and provision of supplements as needed. The remaining 77 charts did not indicate nutrition intervention; this group was called the nonintervention group. Differences between the intervention and nonintervention groups were analyzed using the two-tailed Fisher exact test and the Mann-Whitney nonparametric test.

RESULTS

Forty-two subjects (35% of the total) recieved nutrition intervention, including all of those with gastrointestinal problems (n = 10) and wasting (n = 11). Individuals in the intervention group gained a significant (P < .02) 1.2 +/- 11.4 lb (mean +/- standard deviation; median = +3 lb) compared with those in the nonintervention group who lost a mean of 3.5 +/- 12.8 lb (median = -4 lb). Twenty-six subjects (63%) in the intervention group maintained or gained weight compared with 32 subjects (42%), in the nonintervention group.

CONCLUSION

The results of this study suggest that nutrition intervention in HIV-infected persons can improve nutritional status and may lead to an enhanced ability to fight infection.

Position of the American Dietetic Association and the Canadian Dietetic Association: nutrition intervention in the care of persons with human immunodeficiency virus infection

The goals of medical nutrition therapy in HIV disease include early assessment and treatment of nutrient deficiencies, maintenance and restoration of lean body mass, and support for activities of daily living and quality of life. The maintenance and restoration of nutritional stores are closely interrelated and interdependent with each of the other recommended medical therapies. Therefore, it is vital to the health of persons with HIV/AIDS to have access to the services of a registered dietitian, who is the essential member of the health care team for providing medical nutrition, therapy (49). The registered dietitian should take an active role in developing nutrition care protocols for HIV/AIDS in their practice setting. Dietetics professionals must take responsibility for obtaining and maintaining current knowledge in this area and should take the lead in translating current knowledge and research into practical and realistic nutrition guidelines for persons with HIV/AIDS. Further research is needed in the area of HIV/AIDS and nutrition. Registered dietitians and other members of the health care team are encouraged to conduct nutrition research in the area of nutrition interventions and the outcomes of nutrition therapy. Additionally, government health-related agencies, national AIDS-related organizations, and private industry should be encouraged to provide funding sources and support to the issue of research in nutrition-related problems and interventions in HIV/AIDS.

Comparison of anthropometric measures of men with HIV: asymptomatic, symptomatic, and AIDS

OBJECTIVE

Anthropometric measures were performed to determine differences in estimated fat mass, lean body mass, and body weight among three groups of men infected with human immunodeficiency virus (HIV).

DESIGN

This study was cross-sectional.

SETTING

Local centers of community services and support groups for persons infected with HIV in the province of Quebec, Canada.

SUBJECTS

Thirty-seven HIV-positive men were recruited; 11 were asymptomatic (T helper cells [CD4+ count] > 400 cells/mm3), 8 were symptomatic (CD4+ < 400 cells/mm3), and 17 were clinically stable but met the criteria of the Centers for Disease Control and Prevention for acquired immunodeficiency syndrome (AIDS).

MAIN OUTCOME MEASURES

Self-reported usual weight, actual weight, body mass index, midarm circumference, and triceps and subscapular skinfolds were recorded. From those we derived the percentage of body fat, the midarm muscle, and fat areas. Daily energy and protein intakes were determined from a 7-day food record. Clinical signs and symptoms were assessed by a structured questionnaire.

STATISTICAL ANALYSES PERFORMED

For statistical comparisons, analysis of variance was used, with P < .05 being significant.

RESULTS

We found a trend toward a decrease in body weight and in the fat mass indicators as the disease progressed. Lower energy intakes were observed among symptomatic and AIDS groups. The number of nutrition-related clinical signs and symptoms experienced by each individual correlated with the magnitude of weight loss (P < .0004, r = -.69).

APPLICATIONS

The findings suggest that anthropometric measures can be used in routine clinical practice to assess changes in body weight and in estimated fat mass among men infected with HIV. Symptoms and energy intakes should be assessed to identify subjects at high risk of greater weight loss.

Malnutrition in patients with AIDS

Malnutrition is a frequent problem in persons infected with the human immunodeficiency virus. The origin of malnutrition in patients with AIDS may be multifactorial. The primary mechanisms include disorders of food intake, alterations in intermediary metabolism, and nutrient malabsorption. Attention to the problems of malnutrition in patients with AIDS is of paramount importance because the timing of death in these patients may be more closely related to degree of body cell mass depletion than to any specific underlying infection. Nutritional support can improve nutritional status in selected patients, and repletion of body cell mass may be associated with functional improvement. Early assessment, attention to nutritional requirements, and prompt intervention can minimize wasting and replete body cell mass. This article examines the evidence for malnutrition in patients with AIDS, reviews the studies of nutritional support, and presents an approach to the management of malnutrition in AIDS.