Comparison of the use of life cycle assessment and ecological footprint methods for evaluating environmental performances in dairy production.

One popular methodology for assessing the environmental impact of livestock sector is Life Cycle Assessment (LCA), that quantifies the environmental impact of a product. Ecological Footprint (EF) performs an environmental sustainability assessment, by comparing the demand for natural capital by an economic activity with the offer of such capital within a certain territory. The aim of the study was the comparison between LCA and EF in assessing the environmental performances of milk production, assuming as case study three cattle farms with increasing levels of production intensity. Different metrics and functional units (FU) (i.e., fat and protein corrected milk, FPCM and hectare) were adopted for LCA analysis, considering some of the major impact categories. For greenhouse gases emissions, the Global Warming Potential (GWP) and the Global Temperature Potential (GTP) were considered. Both metrics were calculated assuming or not the distinction between biogenic and fossil methane. Adopting GWP as a metric, the results per kg of FPCM provided by the LCA highlighted a different trade off compared to the EF method: the farm with the highest productive intensity produced the least impactful milk in terms of GWP but had the most negative Ecological Balance (EB). The same occurred for the other impact categories. When GTP was adopted, or the hectare was considered as FU, the least intensive farm, characterized by greater feed self-sufficiency, became the one that produced the least impactful milk and had the least negative EB. The study highlighted the scientific significance of the integration between the two approaches for creating a comprehensive representation of the effects of human activities on the environment. The LCA method evaluates impacts intensity referred to a specific functional unit and its results are strongly influenced by productive efficiency; the EF method evaluates environmental sustainability of productions in relation to the territory that supports them.

[Evaluation of isometric force in lower limbs and body composition in preterm infants]. / Valoración de fuerza isométrica en extremidades inferiores y composición corporal en prematuros.

INTRODUCTION: Strength is a physical quality with a clear influence on quality of life. It is determined by the structure of the musculoskeletal system, and depends on the muscular structure. It has been described that prematurity conditions both qualities. The aims of this study are to determine whether prematurity is associated with strength or body composition and evaluate the relationship between prematurity, strength and muscle mass. MATERIAL AND METHODS: Case-control study. Participants were premature 7-to-11 year-old children and full-term birth controls. Strength was measured by a strength gauge and body composition from DEXA (duel-energy X-ray absorptiometry) scans. A total of 89 subjects were included and divided into three groups: 30 prematures with birth-weight ≤ 1500g, 29 prematures with birth-weight 1500-2000g, and 30 controls. RESULTS: Weight and BMI z-score was lower in the premature group. No differences were found in muscular mass or strength between groups. A ratio was established between strength and weight or muscular mass. It was observed that it was possible for them to move four times their weight, without finding any differences between groups or a relationship with birth-weight. CONCLUSIONS: Between 7 and 11 years of age, children who were premature have lower weight and BMI than the rest of the children. However, there were no differences in body composition or strength between preterm children and controls.

Assessment of psychological distress in cancer patients: a pivotal role for clinical interview.

OBJECTIVE: The evaluation of psychological distress in cancer patients recently entered oncologic clinical practice. The objective of this study was to evaluate the role of clinical interview within psycho-oncologic assessment. METHODS: Questionnaires assessing distress (PDI), psychopathology (MHQ, HADS) and needs (NEQ) and a subsequent clinical interview were proposed to 320 consecutive inpatients from the Oncology Department of Careggi Hospital in Florence. RESULTS: The clinical interview made it possible to evaluate a significant percentage of patients (30%) who did not fill in questionnaires and to detect the presence of distress in 39 (13.7%) patients who would not have received a diagnosis in a protocol for the assessment of distress based only on questionnaires. It also provided the possibility to ask for help or to receive clinical support to a high percentage of patients (44.1%) who had not requested to speak to a psychologist through the questionnaires (NEQ). Moreover, 25% of patients who received prolonged clinical support had a low score in tests detecting distress, indicating that the opportunity for therapeutic support can emerge during a clinical interview, also in the absence of relevant symptoms detected by questionnaires. CONCLUSIONS: The use of more than one questionnaire in the assessment of distress and psychopathology is associated with reduced compliance and redundant information. On the other hand, clinical interview has a pivotal role in clinical evaluation and access to psychological support. We conclude that optimal efficacy of programs assessing distress in cancer patients is reached when a single questionnaire evaluating distress is associated with a clinical interview.

The case for daily dialysis: its impact on costs and quality of life.

Research suggests daily hemodialysis may improve clinical outcomes. To date, a comprehensive review of its implications on quality of life has not been performed, and little is known about its economic impact. We conducted an economic evaluation comparing short daily or nocturnal hemodialysis with thrice-weekly conventional in-center dialysis. Data on the quality of life and clinical effects of daily dialysis were obtained from more than 60 reports from 13 daily dialysis programs around the world (n = 197). Cost data were derived principally from the US Renal Data System, Centers for Disease Control, and Medicare Payment Advisory Commission. Resource use during daily hemodialysis was modeled after two ongoing programs in the United States. Results suggest that patients feel better and direct treatment costs could be reduced with daily dialysis. Costs are sensitive to assumptions about the effect of daily dialysis on hospital days. Reductions of at least 8% in hospital days are required for these modalities to be cost saving compared with documented reductions of 30% to 100%. Larger well-controlled studies of daily versus conventional dialysis would be helpful to determine whether daily dialysis fulfills these promises. Medicare policy, which limits payment for most patients to three dialysis treatments weekly, poses a disincentive to more widespread adoption among dialysis centers. Given this constraint to broader acceptance, we address several policy options to gain a better understanding of the potential risks and benefits of daily dialysis.

Critical access hospitals: how many rural hospitals will meet the requirements?

Although the Medicare Rural Hospital Flexibility Program (MRHFP), which establishes a new designation for limited-service hospitals called critical access hospitals (CAH), intends to assist small rural hospitals having financial difficulty, it is unclear how many hospitals will qualify for the program. Potential CAHs are identified and the strategic issues that will impact actual participation in the program are discussed. Potential CAHs are identified by applying the legislative criteria for designation to a data set created from both the 1992-1995 Medicare Hospital Cost Report Information System and the 1993 and 1995 Prospective Payment System's Impact files. Descriptive analyses are used to identify potential CAHs by three parameters: distance to nearest hospital, average daily census and operating margin. Results indicate that the majority of potential CAHs have low volume and report poorer operating margins than other rural hospitals. Findings also show that the mileage requirements significantly impact the number of potential CAHs. There is more than a ninefold difference between the 93 hospitals that meet the mileage criterion and the 864 hospitals that might be eligible if certified by the state as "necessary providers," regardless of distance to the nearest hospital. The MRHFP is designed to prevent small, isolated hospitals from closing and thus to ensure continued access to care for rural residents. However, the number of potential CAHs that participate will clearly hinge on the flexibility of the program and the ability of states to determine "necessary providers."

Vulnerability of rural hospitals to Medicare outpatient payment reform.

Because the Balanced Budget Act (BBA) of 1997 requires implementation of a Medicare prospective payment system (PPS) for hospital outpatient services, the authors evaluated the potential impact of outpatient PPS on rural hospitals. Areas examined include: (1) How dependent are rural hospitals on outpatient revenue? (2) Are they more likely than urban hospitals to be vulnerable to payment reform? (3) What types of rural hospitals will be most vulnerable to reform? Using Medicare cost report data, the authors found that small size and government ownership are more common among rural than urban hospitals and are the most important determinants of vulnerability to payment reform.

[Access to the pediatric ambulatory service at a university hospital]. / Acesso a ambulatório pediátrico de um hospital universitário.

INTRODUCTION: In Brazil, one can verify an imbalance between the increase in the need for health care and its supply. The consolidation of the National Health System which recommends universality and equity in care, makes this issue important in the field of health service evaluation. Two pediatric services in a university hospital, one general and the other specialized are studied and compared in terms of their clients' access. METHOD: Questionnaires were applied to 221 users of the general pediatrics outpatient departments of one of the specialties with a view to studying and comparing socioeconomic and several other variables related to the access to these and other health services. RESULTS: A high level of difficulty in the users' locomotion from local health services to the hospital was noted. Of the patients attended, 40% did not receive any kind of care before their arrival and were dependent exclusively on State-run health services. The clients of the specialty were different as regards several variables when compared to the users of the general outpatients' department. The fact that they are at a better socioeconomic level and are less dependent on State-run services brings out the social inequalities involved. CONCLUSION: Socioeconomic conditions, as well as organizational aspects of the service, are seen to be both causes and consequences of social inequality verified.

Primary care physician access and gatekeeping: a key to reducing emergency department use.

Use of the Emergency Department (ED) for nonurgent conditions results in increased cost and discontinuous health care. This prospective study evaluated a program (KenPAC) that required 24-hour access to a primary care physician (PCP) with ED gatekeeping responsibility. Following established criteria, medical records were reviewed for appropriateness of ED use by an urban indigent pediatric population. Emergency Department visits declined (10% to 7.6% (P = 0.00005) and inappropriate visits dropped (41% to 8%) (P < 0.00001) before KenPAC and after KenPAC, respectively. Parental experience, as judged by age and number of children, played a significant role in ED use. The institution of gatekeeping activity contributed to the reduced overall and inappropriate use of the ED.

Improving hospital discharge planning for elderly patients.

Hospital discharge planning has become increasingly important in an era of prospective payment and managed care. Given the changes in tasks, decisions, and environments involved, it is important to identify how to move such planning from an art to an empirically based decisionmaking process. The authors use a decision-sciences framework to review the state-of-the-art of hospital discharge planning and to suggest methods for improvement.

[Evaluation of clinical heart insufficiency in patients with acute myocardial infarct treated with intravenous streptokinase]. / Valoración de la insuficiencia cardíaca clínica en pacientes con infarto agudo de miocardio tratados con estreptocinasa intravenosa.

We assessed the incidence of clinical heart failure in patients with acute myocardial infarction admitted to a coronary care unit and treated with intravenous streptokinase. We compared 2 groups of patients: 1) treated group: patients with acute myocardial infarction admitted to the unit in the last 3 years and treated with intravenous streptokinase, following a protocol established previously. 2) CONTROL GROUP: patients with the same characteristics and selection criteria as for the treated group, admitted to the unit during the previous 2 years and conventionally treated, without thrombolytic therapy. We assessed, in both groups, the incidence of heart failure at the time of admission, at discharge and the total incidence in the unit, following the Killip and Kimball criteria. The total incidence of heart failure was higher in the control group than in the treated group (43.8 vs 19.1%, p less than 0.001). This difference was even greater when the comparison was made with the reperfused patients (43.8% vs 18%, p less than 0.001). Heart failure incidence at the time the patients were discharged from de unit was also higher in the control group (21.2% vs 4.3%, p less than 0.001). When we considered severe heart failure (III-IV Killip Group) we also observed a significant difference between both groups. In conclusion, the incidence and the severity of clinical heart failure were lower in patients treated with streptokinase than in those treated conventionally.

Preclinical assessment of a technique alloy for teaching cast restorations.

The performance of second-year preclinical students who fabricated cast restorations with a technique alloy were compared to the performance of students who used a conventional gold alloy. Nine categories of casting fabrication were evaluated, and no significant differences in performance were found between the two groups of students. Thus, technique alloys can be used as economical substitutes for gold alloys in preclinical teaching situations.

Evaluation of a technique alloy for use in teaching intracoronal cast gold procedures.

The instability of the gold market has not diminished the position of the intracoronal cast gold restoration as the treatment of choice in certain clinical situations. While cast gold inlay and onlay techniques will probably remain part of the dental school curriculum, the cost factor in teaching these procedures at the preclinical level can be minimized by using a less expensive technique alloy. One such alloy was evaluated for suitability as a gold substitute in teaching the fabrication of the intracoronal cast gold restoration. The remarkable similarity of the handling characteristics of this metal to type I and type II casting gold alloys is discussed.