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1.
We compared predeposit autologous blood utilization practices in 612 hospitals (where 107,559 autologous and 2,504,522 homologous units were transfused in all of 1989). Participating blood bankers prospectively followed up donors who presented for initial donation during an 11-week period in early 1990. They recorded the number of autologous donors whose blood was drawn (n = 22,276); units that were donated (n = 40,163), transfused (n = 23,988), crossed over (n = 937), and discarded (n = 15,443); and donors transfused with autologous blood only (n = 11,923) or donors who received homologous blood (n = 2002). Most donors (89.7%) avoided homologous blood, including donors (39.5%) who did not require transfusion. Units that were donated for low-risk surgery represented 23.1% of all units that were collected, and the rate of donation for these procedures was directly proportional to the percentage of donors who did not require transfusion and to the discard rate. We concluded that a major focus of quality improvement in autologous transfusion practice should be the reduction of donations for surgical procedures for which blood replacement is rarely needed.  相似文献   

2.
A pilot study was undertaken in the UK in February 2005 to identify the perceptions of risk, effectiveness and ethicality of different hypothetical transfusion options, including blood substitutes derived from different sources, among young adults. Forty-nine men and 92 women completed the questionnaire, aging between 18 and 25 years old (mean +/- standard deviation = 19.7 +/- 1.2 years). Twenty-three percent of respondents had donated blood, an average of 3.1 times. The study assessed the perceptions of donor blood versus 3 different types of potential "artificial blood" [i.e. "chemical" (synthetic), "grown from bacteria" (recombinant hemoglobin), or "based on cow blood" (bovine hemoglobin)] on three dimensions, namely risk, effectiveness, and ethicality, each scored on a 1 (least) to 7 (most) Likert-type scale. Donor blood was rated as significantly (P < 0.05) less risky, more effective and more ethical than any of the blood substitutes. The chemical-based blood substitute was rated second least risky, second most effective and second most ethical followed by bacteria grown substitute. The bovine-based blood substitute was rated as significantly riskier, least effective and least ethical. All the blood products differed significantly for perceived ethicality, with donor blood considered as most ethical and a blood substitute derived from bovine blood as least ethical. Judgments of risk correlated negatively with effectiveness (all transfusion options) and ethicality (all the blood substitutes). Overall, these results indicate that donor blood is currently preferred over blood substitutes in the UK and that judgments of risk about different hypothetical transfusion options are related to perceptions of effectiveness and ethicality.  相似文献   

3.
Attitudes of donors and recipients to gamete donation   总被引:2,自引:2,他引:2  
An anonymous questionnaire was circulated at two gamete donation clinics to survey the attitudes of donor insemination patients (n = 71; 89% response rate), sperm donors (n = 52; 85% response rate) and ovum donors (n = 5; 63% response rate) to the release of medical records with non-identifying information, or with identifying information of the donor involved. The majority of established sperm donors agreed to the release of medical records with or without identifying information. In the subset of potential sperm donors 85% would not enter a sperm donation programme unless anonymity was maintained, but 60% would agree to the release of non-identifying medical records. Sixty per cent of recipients of donated spermatozoa would agree to the release of medical records with identifying information of the donor, but 85% stated that they would not tell their children of their genetic origin. There is a significant difference between the attitudes of potential sperm donor recruits to these questions and those of established donors and recipients of donated spermatozoa. In conclusion, the results of this survey show that although established sperm donors would continue to donate spermatozoa if their status of anonymity was withdrawn, recruitment of new donors would be significantly reduced. This would be to the detriment of gamete donation programmes and to the subfertile couples who request this form of treatment.  相似文献   

4.
The European Union and many transfusion international organizations and societies held the unpaid blood donation as an imperative for enrolling donors, not always providing the means for implementing this regulation, in particular induced by the (pharmaceutical) industry's hesitations. In spite of this, all available data, whatever former or recent, prove that the unpaid blood donation has a higher transfusion safety level than the remunerated donation's. The author also stresses that blood industrialization, while considerably improving the transfusion safety, has also destroyed the past vicinity between donor and receiver within the hospital environment, detrimental to enrolling donors. He also evokes challenges to be coming up soon in transfusion centres as well as changing the role of Red Cross and Red Crescent societies to refocusing their activities on the promotion of blood donation and donor enrollment.  相似文献   

5.
ObjectivesThe majority of blood donor motivational and awareness activities are directed toward whole blood donation and not much emphasis is given to the plateletpheresis. The study was designed to analyze the effectiveness of the unique concept of platelet drives (PD) to increase voluntary plateletpheresis donations.Materials and methodsThe study was a retrospective study conducted at a tertiary care oncology hospital-based blood transfusion services (BTS).ResultsA total of 13 PDs were conducted from January 2016 to December 2020. A total of 559 potential donors came for the donor registration and 125 donors got deferred on medical history. A total of 434 donors gave their samples for the testing of plateletpheresis. The median age of potential male and female donors was 32 and 30 years respectively. A total of 58 males and two females have donated single donor platelets (14.3% vs. 7.4%, P = 0.319). The median age of male and female donors was 36 and 42 years, respectively. In male donors, 48 had donated once, seven donated twice, two donated thrice and one donor donated four times. Out of two female donors, one donor donated twice and the other donor donated four times. The female donors were more committed to repeat donations (P = 0.004). Since the start of PDs, the number of voluntary donations has increased considerably over the years.ConclusionPDs have helped in increasing the number of voluntary plateletpheresis donors. All the BTS must have the standard operating procedures in place for these kinds of awareness and motivational drives.  相似文献   

6.
We have analysed the different variables which affected the efficacy of egg donation in our assisted reproductive technology unit. Potential donors (n = 108) were divided into two groups. Group 1 comprised partial donor (PD) subjects who underwent assisted reproduction for the treatment of their infertility and who agreed altruistically to donate extra eggs not used during their own cycles (n = 31). Group 2 consisted of full donor (FD) subjects who donated all the eggs recovered during their ovarian stimulation cycle (n = 77) and included sister to sister donation, volunteers and patients undergoing diagnostic or sterilization laparoscopies. The entire donor population was divided into two sub-populations by age, those under 30 and 31-39 years old, and correlated with the pregnancy rate in their recipients. From this analysis, a higher pregnancy rate was observed when the oocytes were provided by the younger group of donors (54 versus 36%). We did not find a significant difference in the recipients' pregnancy rate, according to the previous reproductive performance of their donors. Even though FD and PD yield similar pregnancy rates during the fresh cycles, the availability of cryopreserved embryos in the former group enhances the cumulative pregnancy rate.  相似文献   

7.
Background and Objective  In the United States, approximately 15 million whole blood products are collected each year from 10 million volunteer donors. African Americans are underrepresented in the donor pool. In 2008, 7% of white versus 4% of African American and Hispanics adults donated in the previous year. The donor rates vary by region in the United States: 77–93% for whites, 1–16% for African Americans and 1–13% for Hispanics. In the Atlanta metropolitan area whose donor pool is 77% white, 16% African American and 4% Hispanic, the blood donor rate (number of blood donors per population) was 11/1000 population for whites, 6/1000 for African Americans and 3/1000 population for Hispanics; and the blood donation rate (number of units donated by population over the total population) was 77 donations/1000 population for whites, 22/1000 population for African Americans and 10/1000 population for Hispanics. Thus, African Americans and Hispanics represent half of the donors as whites when adjusted for their percentage of the population and more strikingly donate a significantly fewer number of units per each donor. Materials and Methods  Literature on reasons for racial/ethnic differences in donation rates and methods to address these differences was reviewed. Results  The reasons for these differences are multifactorial. First, although 41% of the total US population is estimated to be eligible to donate, African Americans and Hispanics have lower eligibility rates (whites 46%, African Americans 36%, and Hispanics 41%). Second, donor deferral rates are higher for minorities: whites 11%, African Americans 18%, Hispanics 14% and Asians 16%. Deferral is most commonly secondary to temporary deferral reasons such as low hemoglobin level, yet donors are less likely to return once deferred, and thus deferral affects donor and donation rates. Third, minorities may have different motivators and barriers. The most cited motivators to blood donation are more convenient place and times, and being asked; and the most cited barriers are fear of catching a disease and feeling faint/dizzy, and not have time or knowing where to donate. Racial differences in motivating factors identified include African Americans are more likely than whites to donate to receive an item/gift and be tested for infectious disease, and if assured that donating is safe. Notably, these motivators are not the primary cited motivators. African Americans compared with whites more commonly cite fear, difficulty finding veins and not knowing where to donate as deterrents. In addition, African Americans have distrust in the healthcare system, which is correlated with lower donation rates. Fourth, different racial/ethnic groups may have different preferred marketing strategies, including methods of contact, as well as culturally specific motivators for behavioural change. Conclusion  Thus, with an improved understanding of these differences as well as accurate tools to measure the outcomes, culturally targeted recruitment programs can be developed to increase donation rates.  相似文献   

8.
Autologous transfusion should be recognized by patients and physicians as an important measure to provide safer transfusion therapy. This should be suggested to patients in general good health (who are not obviously frail) who have no significant medical problems and no likelihood of severe reaction, who can take iron supplements, and who have at least a 10% chance of using blood during surgery or are having surgery in which the average use is one or more units. Such patients should receive iron supplementation beginning 1 week before the first autologous donation, and should donate one to five units on a weekly basis, but no more frequently than every 72 hours, with their last unit donated 72 hours before surgery. Elderly individuals may donate if the risk of donor reaction seems low. In children and adults, the amount of blood removed should be reduced in proportion to the blood volume if the individual does not meet the standard weight of 50 kg for a 450-mL donation. "Fail-safe" identification systems should be used; these will insure that the correct donor/patient receives the transfusion. Processing of the units is preferred but still optional. Use of these units as homologous units should not be done unless the donor has a hematocrit level acceptable to an autologous donor, meets all the criteria for recipient safety, the unit is processed and negative for all viral markers, and the donor has recently (eg, within 3 years) participated in the volunteer donor program. The unit should be transfused to the patient in situations in which homologous blood would be indicated. Safeguards to prevent volume overload are needed when the unit is stored as whole blood. Future research objectives should include the use of recombinant erythropoietin to prevent donation-induced anemia, delineation of medical conditions which should contraindicate the donation, and determination of the real costs involved in autologous transfusion. Education of the general public, patients, and physicians about the desirability of autologous transfusion should proceed. Third-party carriers also need to be educated about the cost implications and the need to pay for this activity. However, such education should also stress that autologous units will only cover planned, elective surgery and that major blood needs for emergency surgery, trauma, and chronic transfusion will still need to be met by homologous blood from altruistic community blood donors.  相似文献   

9.
We set out to identify the reasons why potential organ donors (PODs) fail to become actual donors and the causes of under-utilization of organs offered for donation. We audited 354 patients who died in the intensive Care Unit over 18 months. Of 155 PODs, 78 (50%) did not undergo brain stem testing (BST) because of (i) unavoidable death from non-CNS causes before BST (n = 50), (ii) treatment withdrawal without BST (n = 17) and (iii) preconditions for BST were not fulfilled (n = 11). Brain death was confirmed in 75 patients. Relatives refused consent for donation in 25 patients organ donation was not discussed with the family in 6, and medical contraindications to organ donation prevented donation in 5. Thirty seven (24% of all PODs) became organ donors who provided a total of 216 organ. All donated kidneys were utilized but unsuitability and logistic issues prevented utilization of 20% and 13% of all donated organs respectively. The commonest reason for failure to utilise potential organ donors was failure to perform BST. In most cases this was because BSTs were not possible but more aggressive management of and the routine performance of BST in all PODs could increase the number of donors. Not approaching relatives to ask consent for organ donation and a high rate of refusal by relatives also led to loss of organ donors.  相似文献   

10.
Little is known about the experiences of individuals donating peripheral blood stem cells (PBSCs) or marrow for a second time. To study this, unrelated donors making a second donation through the National Marrow Donor Program between 2004 and 2013 were evaluated. Experiences of second-time donors giving marrow (n?=?118: first donation was PBSC in 76 and marrow in 42) were compared with those making only 1 marrow donation (n?=?5829). Experiences of second-time donors giving PBSCs (n?=?602) (first donation was PBSCs in 362; marrow in 240) were compared to first-time PBSC donors (n?=?16,095). For donors giving a second PBSC or marrow donation there were no significant differences in maximum skeletal pain, maximum symptoms measured by an established modified toxicity criteria, and recovery time compared with those who donated only once. Notably, the yield of marrow nucleated cells and PBSC CD34+ cells with second donations was less. As previously noted with single first-time donations, female (PBSCs and marrow) and obese donors (PBSCs) had higher skeletal pain and/or toxicity with a second donation. PBSC donors who experienced high levels of pain or toxicity with the first donation also experienced high levels of these symptoms with their second donation and slower recovery times. In conclusion, for most donors second donation experiences were similar to first donation experiences, but CD34+ yields were less. Knowledge of the donor's first experience and stem cell yields may help centers decide whether second donations are appropriate and institute measures to improve donor experiences.  相似文献   

11.
The attitudes of anonymous volunteer donors (n = 20) and infertile patients who were undergoing treatment in an IVF programme and who donated oocytes (n = 15) towards the donation, the recipient, the potential children conceived, the recording of information and their experience of the procedures were sought by posted questionnaires. All donations were made for altruistic reasons and no payments other than expenses were made. Both groups agree that donors should not be paid and they both deny any connection with the child resulting from their donation. The majority in both groups also did not object if their eggs were donated to unmarried single women and they did not wish to meet with the recipient. The majority of both groups would however agree to donate to known recipients. Over 80% had told others of their donation and a similar number in the volunteer group held no objection to the recipients knowing their name whilst only 40% held the same view in the patient donor group (17/20 versus 6/15 P less than 0.02). The feelings of the groups was also different in relation to their desire to know if a child was born from their eggs. Eighty five per cent in the volunteer group (17/20) would like to know the outcome and only 40% (6/15) of the patient donor would want to know the outcome, P less than 0.02. Although greater than 50% in both groups experienced side effects, 60% of volunteers and 90% of patient donors expressed a willingness to donate eggs again.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   

12.
OBJECTIVE: Vasovagal reactions experienced by some blood donors (eg, faintness, lightheadedness, and dizziness) have been shown to be related to a decreased likelihood of future blood donations. This study evaluated the efficacy of audiovisual distraction as a means of reducing self-reported physiological reactions in first-time blood donors. Because interventions that are consistent with an individual's preferred coping style have been shown to be more effective at reducing physiological and psychological responses to stressful medical procedures, coping style (monitoring vs. blunting) was assessed as a possible moderating variable. METHODS: First-time blood donors were randomly assigned to one of two conditions: audiovisual distraction or no-treatment control. Participants in the distraction group donated blood at an American Red Cross blood drive while watching a three-dimensional video presentation on a personal visor and headset. The control group donated blood according to standard American Red Cross procedures. Score on a self-reported measure of physiological reactions completed immediately after donation served as the dependent variable. RESULTS: Individuals who typically use blunting coping strategies to cope with stress reported an attenuation of vasovagal reactions to blood donation in the distraction vs. the control condition (t(49) = 2.29, p < .05), whereas donors who prefer a monitoring coping style did not benefit from distraction. CONCLUSIONS: Among first-time blood donors, audiovisual distraction may be an effective means of reducing vasovagal reactions in donors who prefer to cope with stress using such strategies as distraction, denial, and reinterpretation.  相似文献   

13.
Blood transfusion is an important mode of transmission of infections to the recipient. The aim of the study was to assess the prevalence of transfusion transmissible infections and the possible risk factors among blood donors. During the study period (1994-99) donor samples were screened for HBsAg, HIV, HCV and Syphilis. The relevant donor history was examined to identify the risk factors leading to transfusion transmissible infections. The prevalence of infection was 3.1% among donors, with HBsAg constituting 1.3%, HCV 1.4%, HIV 0.2% and RPR 0.2%. In a classification based on occupation, class III donors (drivers, Businessmen & men in uniform) showed a significantly higher incidence of transfusion transmissible infections for HIV (0.38%) and Syphilis (0.36%). Health care workers constituted only a small fraction of the study; prevalence of infections was low among them. History of jaundice or hospitalization was not associated with higher incidence of seropositivity. Seropositivity for HIV is relatively low compared to similar studies conducted in other regions of the country. This finding is attributed to the pre donation counseling in donor selection. An important outcome of the study is that Class III donors form a high-risk group for transfusion transmissible infections.  相似文献   

14.
In Tunisia, blood donation is voluntary, anonymous and non-remunerated. The aim of the study is to analyze donor motivation and sociology in the regional center of transfusion of Sfax. Between 14 May 2007 and 23 June 2007, a total of 903 Tunisian blood donors filled a questionnaire. Among the donors, 81.8% were men and have a mean age of 34.2 years and the majority of them have an age between 18 and 29 years. The middle social class was majority (77.8%) as well as the liberal profession (65.1%). Primary and secondary education were dominant (79.3%). Among the blood donors, 41.6% were new donors and 28.6% had a history of a single donation, 50.3% were voluntary and 49.7% replacement donors. The reasons motivating the voluntary donation were solidarity (69.9%), religion (21.2%), health benefit (3.6%) and insurance for the family (5.2%). The replacement donors refuse the voluntary donation for not obvious reasons (51%), lack of availability (13.3%), difficulties of accessibility of the sites of collection (7.6%), phobia of the blood and the stings (4.02%) or by refusal of blood donation (1.79%). The information and the raising awareness of the replacement donors could change in a near future their attitudes to become voluntary and regular donors. The implication of donor associations in the organization of the collections and the promotion of the blood donation would be of considerable contribution.  相似文献   

15.
We compared the donation of bone marrow (BM) versus recombinant human granulocyte colony-stimulating factor-mobilized peripheral blood progenitor cells (PBPC) in HLA-matched sibling donors. Donors randomized to donate BM or PBPC completed questionnaires (Profile of Mood States [POMS] and Short-Form 36 Health Survey) assessing peridonation health-related quality of life (QoL), donation experience, and acceptability of donation before and 1 week and 4 weeks after donation. Between January 1996 and March 1999, 184 patients and their donors were randomized. Predonation and postdonation data were available on 52 (56%) and 35 (38%) of the BM and PBPC donors, respectively. The median donor age was 45 years, and 44% were female. The median time (range) to return to full activity for the BM and PBPC donors was 4 days (1-21 days) and 2 days (0-21 days), respectively (P = .01). One week after donation, BM donors reported more fatigue and less energy than the PBPC donors. BM donors' POMS total mood disturbance scores were worse 1 week after versus before donation, whereas the PBPC donors' scores did not change. POMS subscores indicated more fatigue and less energy in the BM versus PBPC donors. Anxiety improved in both groups, but more in PBPC donors. Four weeks after donation, the Short-Form 36 Health Survey indicated persistent moderate negative effects on QoL with BM donation versus small effects with PBPC donation. BM donation was associated with more physical morbidity and negative effects on QoL up to 1 month after donation than was PBPC donation. Despite this, most donors would donate again. Further work is needed to decrease donor anxiety and symptoms. If both BM and PBPC donation are feasible, then the graft source should be dictated by the predicted patient outcome as determined from the results of randomized trials.  相似文献   

16.
Blood transfusion service centers in Nigeria screen donated blood for markers of HIV infection using antibody- (Ab) based rapid test and in some centers, positives are re-tested using Ab-based ELISA. Paucity of data exists on p24 antigen prevalence among HIV Ab-negative donors in Nigeria. This study aims at detecting HIV p24 antigen among prospective blood donors in Osun State, Nigeria. Prospective blood donors negative for HIV antibodies using Determine test kit were re-tested using BIORAD GENSCREEN Ultra Ag-Ab ELISA kit, a fourth-generation ELISA kit that detects HIV antibodies/p24 antigen. Of the 169 HIV Ab-negative prospective donors, 10 (5.9%) were positive for HIV p24 antigen and 70% (7/10) of them were in the age range 18–30 years. Results of this study show that blood transfusion is still one of the major routes of HIV transmission in Nigeria and a higher proportion is among youth. Inclusion of p24 antigen testing into the blood donor screening will help reduce transfusion associated HIV in Nigeria if Nucleic Acid Testing (NAT) of all blood donor samples is not affordable; also, HIV enlightenment programs tailored toward youth may help reduce this rate among donors since more young people donate blood in low/middle-income countries than in high-income countries.  相似文献   

17.
Pregnancies achieved from oocyte, sperm or embryo donation are unique, since they have resulted from donor gametes that are immunologically foreign to the mother. Thus, studying the obstetric outcome of such pregnancies may shed some light on the pathophysiology of preeclampsia, particularly in women conceiving with donated embryos, since the entire fetal genome is allogenic in these pregnancies. In this retrospective cohort study, a total of 144 women were studied. Of these, 72 were infertility patients who had conceived as a result of sperm, ovum or embryo donation and the other 72 women were age- and parity-matched control patients who became pregnant with their own gametes, either spontaneously, or following intrauterine insemination with their partner's spermatozoa. Study patients were divided into three groups depending on the origin of the donated gametes. Group 1 consisted of pregnancies achieved by intrauterine insemination with washed donor spermatozoa (n = 33). Group 2 included women who conceived using donated oocytes (n = 27) and group 3 consisted of women who conceived as a result of embryo donation (n = 12). The incidence of pregnancy-induced hypertension in the donated gametes study group was 12.5% (9/72) compared with 2.8% (2/72) in the control group. In addition, pre-eclampsia was diagnosed in 18.1% (13/72) of the donated gametes study group compared to 1.4% (1/72) in the age- and parity-matched controls. The increased incidence of gestational hypertension in pregnancies resulting from donated gametes gives evidence for a maternal genetic component, with an equally strong fetal influence, in the complicated aetiology of gestational hypertension, and pre-eclampsia in particular.  相似文献   

18.
This report presents the findings of phase II of the surveyof semen donation commissioned by the Human Fertilization andEmbryology Authority (HFEA), the purpose of which was to obtaininformation about the motivations and attitudes of semen donorsin comparison with a matched group of non-donors. A total of14 centres licensed by the HFEA to conduct donor inseminationparticipated in the investigation. At each centre, all men whoattended for their first or second appointment between 1st November1993 and 31st January 1994 were asked to complete a questionnaireabout the factors which prompted them to attend the centre andabout their knowledge of, and attitudes towards, semen donation.In spite of the recommendation by the HFEA that attempts shouldbe made to recruit as semen donors older men in stable relationshipswho already have children of their own and who wish to donatefor altruistic reasons, it remains the case that the large majorityof men in the UK who donate semen are young single studentswho are largely motivated by payment. Views on oocyte donationof women who had never donated oocytes were also obtained, andcompared with views on semen donation of a matched group ofmen who had never donated semen.  相似文献   

19.
20.
NK cell activity of peripheral blood lymphocytes was determined in voluntary blood bank donors in a standard 4-hr 51Cr-release cytotoxicity assay. When blood donors were divided into groups according to the total amount of blood they had donated in the past, decreased NK activity was found in "moderate" donors who had donated between 3 and 9 l of blood, but not in those who had donated < or = 3 or more than 9 l of blood before testing. This observation was the rationale for a study on the effects of regular blood donations on NK activity in randomly selected voluntary blood bank donors re-tested over a period of time. The study demonstrated decreased NK activity in the second measurement in donors who had donated up to 6 l of blood before the study, and an increase in NK activity between the first and the second testing in those who had donated more than 6 l of blood. This result, together with data obtained at the population level, suggests that some compensatory mechanism(s) regulate NK activity in the course of regular blood donation.  相似文献   

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