Effect on supplementation of Spirulina maxima enriched with Cu on production performance, metabolical and physiological parameters in fattening pigs.

In this paper, the effect of addition of the biomass of Spirulina maxima enriched with copper (Sm-Cu) to the animal feed is discussed. The biomass was cultivated in the photobioreactor with the capacity of 10 m3. After the biosorption process, the enriched biomass was investigated as the source of valuable nutrients. The feeding experiment was conducted for 87 days. The study was performed in individual rearing pens, with controlled microclimate, feed and water were available semi-ad libitum. Piglets (24) were divided into two groups (control and experimental). The experimental group was fed with addition of the biomass of Sm-Cu instead of inorganic salts. There were no statistically significant differences between the average daily and periodic weight gain, daily and periodic feed collection, as well as feed conversion ratio. There were no statistically significant differences between the amount of N excreted in faeces and urine, when considering the retention of N, both in relation to the consumed N, and relative N digested which was at a similar level. In the experimental group in comparison to the control group, the lower low-density lipoprotein cholesterol by 17.05 % (P < 0.05) and total cholesterol by 9.43 % (P < 0.05) were observed. Additionally, the increase of parameter a* of 13 % (P < 0.05) and the reduction of the natural leakage by 34 % (P < 0.05) were found.

Biomass of Spirulina maxima enriched by biosorption process as a new feed supplement for swine.

This paper deals with the new mineral feed additives with Cu produced in a biosorption process from a semi-technical scale. The natural biomass of edible microalga Spirulina sp. was enriched with Cu(II) and then used as a mineral supplement in feeding experiments on swine to assess its nutrition properties. A total of 24 piglets divided into two groups (control and experimental) were used to determine the bioavailability of a new generation of mineral feed additives based on Spirulina maxima. The control group was feed using traditional inorganic supplements of microelements, while the experimental group was fed with the feed containing the biomass of S. maxima enriched with Cu by biosorption. The apparent absorption was 30 % (P < 0.05) higher in the experimental group. No effect on the production results (average daily feed intake, average daily gain, feed conversion ratio) was detected. It was found that copper concentration in feces in the experimental group was 60 % (P < 0.05) lower than in the control group. The new preparation-a dietary supplement with microelements produced by biosorption based on biomass of microalgae S. maxima-is a promising alternative to currently used inorganic salts as the source of nutritionally important microelements.

Response of pregnant and lactating sows to reduced protein content in complete compound feed.

The experimental material consisted of 42 sows divided into 3 feeding groups, each containing 14 sows fed complete compound feed varying in protein content. Protein and amino acid content of the feed fed to the control group was in compliance with Polish standards. Protein content in the experimental groups was reduced by 10% and 20%, respectively. At the same time, lysine, methionine, threonine and tryptophane content was supplemented to the level of the control group. All pregnant and lactating sows were fed individually. The condition of the sows was determined by measuring the thickness of backfat at the P2 position on days 30 and 105 of pregnancy and on day 25 of lactation. The data analyzed in the study included: the total number of piglets born, their body weight gain, milk composition, weaning-to-estrus interval and the farrowing rate. Protein content of the compound feed did not have a significant impact on the increment in backfat during pregnancy and losses during lactation. The sows fed compound feed with reduced protein content gave birth to 0.7 and 0.6 less piglets per litter than the control animals. However, due to lower losses, they bred 0.3 and 0.4 more piglets than the control sows. Average body weight of a piglet on day 21 was 0.5 kg lower in the experimental than in the control group. Dry matter, protein, fat and lactose content of the sow's milk did not depend on protein content of the feed. The weaning-to-estrus interval in the experimental groups was one day longer than in the control group. The reproductive rate accounted for 86% and was comparable in all the groups.

Testing for viral penetration of non-latex surgical and examination gloves: a comparison of three methods.

Currently, there are no international standards based on microbiological methodology for testing the ability of medical examination or surgical gloves to prevent the passage of viruses. Three protocols for the direct examination of the viral barrier properties of non-latex gloves were compared with 1080 gloves (270 gloves from each of two surgical brands and two medical examination brands). In two of the methods, gloves were filled with and suspended in a nutrient broth solution, and bacteriophage phiX174 was placed either inside or outside the glove, while the entire test vessel was agitated. Gloves tested using the third method were filled with a suspension of bacteriophage and allowed to rest in a vessel containing nutrient broth. Gloves were tested directly from the manufacturer's packaging, or after being punctured intentionally or subjected to a stress protocol. The passage of bacteriophage was detected with plaque assays. Significant differences in failure rates between glove brands were apparent only among gloves that had been subjected to the stress protocol. Overall, the two methods in which bacteriophage were placed inside the gloves provided more sensitivity than the method in which bacteriophage was spiked into broth outside the gloves. Thus the placement of bacteriophage inside test gloves (or the use of pressure across the glove barrier during testing), and the use of a standardised stress protocol, will improve significantly the ability of a glove test protocol to determine the relative quality of the barrier offered by medical examination and surgical gloves. Further research is needed to provide test methods that can incorporate reproducibly both the use of bacteriophage and simulated glove use in an industrial quality control setting.

Implementing a nonlatex surgical glove study in the OR.

Sterile surgical gloves are used to protect patients and health care workers (HCWs) from infection during surgery and to shield HCWs from exposure to bloodborne pathogens. Based on increased reports of latex allergy, many HCWs now use nonlatex surgical gloves as a substitute for natural rubber gloves. Little is known, however, about the performance of nonlatex gloves in surgery. This article describes a study that currently is being performed to test the barrier performance of nonlatex surgical gloves after they have been used in surgery and to determine HCW satisfaction. To date, 12,703 latex and nonlatex gloves from all surgical services have been collected and tested for barrier quality. This article describes the project and challenges encountered by the collaborative team of perioperative staff members and nurse researchers as they collect data.

Latex allergy and implications for urology nursing.

Latex hypersensitivity is a major occupational health concern. Health care workers as well as patients who are not yet diagnosed are the most at-risk populations. Knowledge about everyday products that may increase one's exposure to latex allergy is an important prevention strategy and will assist in decreasing the overall incidence of latex allergy among patients and health care workers.

Understanding latex allergy.

Latex allergy is an increasingly important problem in both health-care workers and patients. Predisposing factors to development of latex allergies include a history of atopy or allergy and frequent exposure to latex products. Identified allergens include latex proteins from the rubber tree that remain in manufactured products, as well as smaller molecules that remain from the latex purification and manufacturing process. Latex proteins absorbed to powder in latex surgical and examination gloves may be aerosolized and inhaled. Powder-absorbed latex proteins are thought to be important in triggering of sensitization in susceptible individuals, as well as in elicitation of symptoms in previously sensitized patients. Allergic reactions to latex can include local dermal reactions or generalized immediate hypersensitivity (anaphylactic) reactions. Pathophysiology, signs and symptoms, and treatment of each type of reaction are discussed. Measures to address latex allergy, however, must include measures to decrease exposure to latex antigens both in latex-allergic subjects, to prevent symptoms, and in naive subjects, to prevent sensitization. These measures may include finding, acceptable substitutes for latex in many products.

Latex allergy and gloving standards.

In response to universal precautions, latex gloves are used more frequently in health care settings, and more health care workers are reporting latex sensitivity or allergic reactions to natural rubber latex (NRL). As a result, there continues to be controversy about what gloves should be used in clinical practice and what are the appropriate clinical recommendations about gloving practices. This article reviews the current issues about gloving practices, addresses national standards related to gloving, and makes recommendations about future gloving practices.

[International health: a new challenge to nursing education]. / Salud internacional: el nuevo desafío para la educación de enfermería.

A survey was conducted among 110 Schools of Nursing in USA and 5 Schools in Latin America and the Caribbean (LAC) to identify the international health (IH) component in nursing education, practice and research. A significant part of U.S. schools and all 5 LAC schools have international activities, and this interest has started basically in the last 5 to 10 years. There was difference in the structure of IH activities among U.S. and LAC nursing schools, but they were similar in the type of support offered to IH initiatives. IH content in nursing education among U.S. schools was related to culture, health systems and community health; in LAC schools, IH content was related to health promotion, health policy and strategies and nursing perspectives. U.S. and LAC schools with international activities have only 10% of their faculty and students involved with IH initiatives. The nursing schools still lack courses and activities that the Schools of Public Health have implemented to deal with IH. The article observes areas that need to be strengthened so that nursing professionals can expand their leadership roles in research and practice in international health.

Nursing education and international health in the United States, Latin America, and the Caribbean.

PURPOSE: To identify international health activities in United States, Latin American, and Caribbean schools of nursing. In the international community, nurses face challenges similar to those in related professions, but without the benefit of a long tradition. There is little research about how nursing education and associated activities prepare nurses to deal with international health, and little information about the extent of international health activities in U.S. schools of nursing. DESIGN: Descriptive. METHOD: Using a questionnaire with 16 items, a survey was conducted in 1995 on a random sample of representatives from 100 university schools of nursing in the United States plus 15 schools with known international activities (10 from the United States and 5 from Latin America and the Caribbean). FINDINGS: International health as a program topic was found in one-third of U.S. schools of nursing. However, nursing curriculums do not integrate international health with other subjects. Also, partnerships with foreign institutions are incipient and international health activities are usually individual initiatives with little institutional support. CONCLUSIONS: For nurses to become major contributors to international health, nursing curriculum content must shift from "international nursing" to "international health." Programs of nursing education should include study of social, economic, and political factors that affect health care systems. Schools should develop partnership agreements.

Loss of glove integrity during emergency department procedures.

STUDY OBJECTIVE: We sought to assess the loss of integrity of the latex-glove barrier during use in the ED setting. METHODS: We conducted a prospective observational study in an urban ED and Level I trauma center. Procedures performed by ED health care workers (HCWs) were directly observed, timed, and categorized. The gloves used by the HCWs were collected and subjected to the standard US Food and Drug Administration leak test. RESULTS: Ninety-nine (7.9%) of 1,254 pairs of gloves used for observed procedures leaked, compared with 2 of 200 unworn control pairs (1.0%) and 12 of 300 pairs that were worn but not used (4.0%). Leak rates varied by manufacturer and were higher for gloves worn 20 minutes or longer (13.7%, P = .015), used for four or more procedures (50%, P < .01), or used for critical care procedures (23.5%, P < .01). Sixty-six of an additional 325 pairs of gloves collected from unobserved critical care procedures (20.3%) leaked. CONCLUSION: Loss of glove integrity occurs during the performance of ED procedures, subjecting the HCW to possible infectious-fluid exposure. Risk of glove perforation increases with duration of wear, number of procedures performed, and the performance of critical care procedures.

Improving glove barrier effectiveness.

Perioperative staff members depend on surgical gloves to prevent disease transmission between themselves and patients, but these gloves frequently fail during use. Three approaches can make surgical gloves more effective barriers: preventing glove failures, monitoring glove integrity, and improving glove quality. Failure prevention includes modifying surgical techniques, improving instruments and equipment, streamlining teamwork, selecting the most appropriate gloves, double gloving, and performing preventive glove changes. Glove integrity monitoring can be performed visually or by feel, by wearing glove pairs with color-puncture indicators, or by using electronic monitoring devices. Glove quality improvements must be accompanied by testing methods that reflect in-use conditions. A glove rating system that is based on in-use performance may enhance glove safety substantially.

The risks and challenges of surgical glove failure.

The relationship between infection control standards and surgical gloving practices is an important issue in combating infectious disease. For their own and their patients' protection, health care personnel must rely on the barrier qualities of gloves more than ever before. Both surgical and examination gloves fail frequently, which puts health care providers and patients at risk of acquiring fluid-borne pathogens. This paper discusses current guidelines, the risk of infection by viral and bacterial pathogens, controversial issues involving gloving practices, and recommendations to improve infection control practices.

Surgical glove failures in clinical practice settings.

Health care personnel often pay little attention to the barrier effectiveness of the surgical gloves they use in clinical settings. They may assume that all surgical gloves provide adequate protection against the transfer of bloodborne pathogens, chemicals, or mutagenic substances. Perioperative staff members frequently are unaware that their surgical gloves have failed until they find blood on their hands after operative procedures are completed. In this first article of a three-part series, the authors review current surgical glove testing standards, define surgical glove failure, and describe the reasons that surgical glove failure occurs in clinical practice settings.

Barrier protection and latex allergy associated with surgical gloves.

Latex continues to be the material of choice for surgical gloves because it is resealable and flexible, and it maintains the wearer's tactile sensitivity. The use of latex gloves for barrier protection may need to be reevaluated in light of the increasing number of individuals who are sensitive to latex. Hospital personnel can use low-allergen gloves or nonlatex gloves when caring for patients with known sensitivity to latex; however, only nonlatex gloves may be effectives at reducing or preventing anaphylactic reaction. Health care facilities must develop policies and procedures for dealing with latex-sensitive patients and health care workers.

Consistency and cost of home wound management by contract nurses.

The purposes of this descriptive study were to determine the consistency of wound care provided by home health care nurses with the physician's order and the agency's written wound protocol; and the type and cost of wound-management products and nursing services associated with home care. Eleven registered nurses were observed providing wound care in 117 home visits to 31 patients. In addition to the observational component, data were also collected by chart review to facilitate comparison of observed vs. documented care. There were statistically significant differences between observed care given and that which was documented in patients' records. Consistency of care for individual patients was high when care was delivered by the same nurse, but lower when different nurses were involved. The mean dollar value of supplies used for all visits was $9.40, and the average nursing charge per visit was $89.