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1.
Transfusion ; 62(12): 2539-2554, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-36281204

RESUMEN

BACKGROUND: A greater understanding of young, first-time donor motivators and barriers is needed to address the ongoing challenge of retaining these essential donors. STUDY DESIGN AND METHODS: Structured interviews conducted with 508 young, first-time whole blood donors [66.1% female; Mean Age = 19.4 (SD = 2.5) years] were coded to identify reported motivators and barriers. Reported motivators and barriers were then examined for their association with attempted donation behavior over a 14-month follow-up, and for potential sex, race, and ethnic group differences in the frequency of endorsement. RESULTS: Prosocial motivation (e.g., altruism) was the most commonly reported motivator and fear (e.g., fainting, needles) was the most commonly reported barrier. Donation behavior was unrelated to reported motivators, but was significantly related to four reported barriers including fear of fainting/dizziness, fear of needles/pain, having personal commitments that conflict with donating, and perceiving oneself as unsuited to donate for health reasons. Sex, racial, and ethnic differences were noted with respect to the percentages of donors reporting several donation-related motivators and barriers. CONCLUSION: The present findings identify donation-related barriers that could be important targets to address in the effort to encourage new young donors and to retain these new donors for the long term. Importantly, these data also highlight the importance of considering individual differences in donor motivation as a function of sex, race, and ethnicity.


Asunto(s)
Donación de Sangre , Donantes de Sangre , Femenino , Humanos , Adulto Joven , Adulto , Masculino , Etnicidad
2.
Transfusion ; 61(12): 3353-3360, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34605554

RESUMEN

BACKGROUND: The potential for iron deficiency is a known blood donor health concern and suggests the need to inform donors about the potential risks of low iron levels as well as strategies to address these risks. STUDY DESIGN AND METHODS: Frequent (n = 904) and young (n = 629) donors were randomly assigned within risk group to either a control (n = 548) or an intervention (n = 985) group. The control group answered questions at baseline and 6-month follow-up regarding their awareness of the risk of donation-related iron depletion and whether they were taking actions to address their iron status. The intervention group answered the same questions at baseline and follow-up, but after completing the baseline survey, they received information regarding their risk of iron depletion and behaviors they could adopt to mitigate this risk. Intervention group participants were also offered the opportunity to develop an action plan to help them supplement their iron intake. RESULTS: The intervention enhanced overall awareness of donation-related iron loss (OR = 1.5, 95% CI 1.171-1.864, p = .001), with no negative impact on retention. Reported iron health behaviors (iron supplementation, speaking with a doctor) showed significant increases when action planning was paired with the educational information. CONCLUSION: These findings suggest that it is possible to increase awareness of donation-related risk for iron depletion without negatively influencing retention, and combining education with encouragement to develop an action plan may increase the likelihood of both retention and behavioral changes to promote healthy iron levels.


Asunto(s)
Deficiencias de Hierro , Hierro , Donantes de Sangre , Suplementos Dietéticos , Ferritinas , Humanos
3.
Transfusion ; 61(12): 3372-3380, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34535897

RESUMEN

BACKGROUND: Elevated fear and anxiety regarding donation-related stimuli (e.g., needles, pain, blood, fainting) has been associated with reduced blood donor recruitment and retention. The present longitudinal study tests the notion that this inverse relationship may be accounted for by lower donation confidence and more negative donation attitudes among fearful first-time donors. STUDY DESIGN AND METHODS: In a sample of 1479 first-time whole blood donors [67.9% female; mean age = 19.3 (standard deviation (SD) = 2.5) years], path analyses were conducted to examine relationships among donor ratings of fear of blood draw and donation anxiety obtained approximately 1 week after donation, donation confidence and attitudes assessed approximately 6 weeks later, and donation attempts over the 14 months following the original donation. RESULTS: Path analyses indicated that both fear of blood draws and donation anxiety were associated with fewer attempted donations, and that these effects were indirectly mediated by a combination of lower donor confidence and more negative donation attitudes. CONCLUSION: Because retention of new blood donors is essential to maintain a healthy blood supply, the results of the present study suggest that first-time donors should be assessed for fear and anxiety so that appropriate strategies can be provided to address their concerns, bolster their confidence and attitudes, and ultimately promote their long-term retention.


Asunto(s)
Donantes de Sangre , Miedo , Adulto , Actitud , Femenino , Humanos , Estudios Longitudinales , Masculino , Trastornos Fóbicos , Adulto Joven
4.
Transfusion ; 61(9): 2637-2649, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-34224590

RESUMEN

BACKGROUND: This study aimed to promote competence, autonomy, and relatedness among first-time whole blood donors to enhance intrinsic motivation and increase retention. STUDY DESIGN AND METHODS: Using a full factorial design, first-time donors (N = 2002) were randomly assigned to a no-treatment control condition or to one of seven intervention conditions designed to promote donation competence, autonomy, relatedness, a combination of two (e.g., competence and autonomy), or all three constructs. Participants completed donor motivation measures before the intervention and 6 weeks later, and subsequent donation attempts were assessed for 1 year. RESULTS: There was no significant group difference in the frequency of donation attempts or in the number of days to return. Significant effects of group were observed for 10 of the 12 motivation measures, although follow-up analyses revealed significant differences from the control group were restricted to interventions that included an autonomy component. Path analyses confirmed direct associations between interventions involving autonomy and donor motivation, and indirect mediation of donation attempts via stronger donation intentions and lower donation anxiety. CONCLUSION: Among young, first-time, whole blood donors, brief interventions that include support for donor autonomy were associated with direct effects on donor motivation and indirect, but small, effects on subsequent donation behavior.


Asunto(s)
Bancos de Sangre , Donantes de Sangre , Motivación , Adulto , Ansiedad/etiología , Actitud , Bancos de Sangre/estadística & datos numéricos , Donantes de Sangre/psicología , Donantes de Sangre/estadística & datos numéricos , Donantes de Sangre/provisión & distribución , Femenino , Humanos , Intención , Masculino , Autoeficacia , Adulto Joven
5.
Transfusion ; 60(9): 1987-1997, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32743798

RESUMEN

Risk assessments of transfusion-transmitted emerging infectious diseases (EIDs) are complicated by the fact that blood donors' demographics and behaviors can be different from the general population. Therefore, when assessing potential blood donor exposure to EIDs, the use of general population characteristics, such as U.S. travel statistics, may invoke uncertainties that result in inaccurate estimates of blood donor exposure. This may, in turn, lead to the creation of donor deferral policies that do not match actual risk. STUDY DESIGN AND METHODS: This article reports on the development of a system to rapidly assess EID risks for a nationally representative portion of the U.S. blood donor population. To assess the effectiveness of this system, a test survey was developed and deployed to a statistically representative sample frame of blood donors from five blood collecting organizations. Donors were directed to an online survey to ascertain their recent travel and potential exposure to Middle East respiratory syndrome coronavirus (MERS-CoV). RESULTS: A total of 7128 responses were received from 54 256 invitations. The age-adjusted estimated total number of blood donors potentially exposed to MERS-CoV was approximately 15 640 blood donors compared to a lower U.S. general population-based estimate of 9610 blood donors. CONCLUSION: The structured donor demographic sample-based data provided an assessment of blood donors' potential exposure to an emerging pathogen that was 63% larger than the U.S. population-based estimate. This illustrates the need for tailored blood donor-based EID risk assessments that provide more specific demographic risk intelligence and can inform appropriate regulatory decision making.


Asunto(s)
Donantes de Sangre , Transfusión Sanguínea , Infecciones de Transmisión Sanguínea/epidemiología , Enfermedades Transmisibles Emergentes/epidemiología , Enfermedades Transmisibles Importadas/epidemiología , Infecciones por Coronavirus/epidemiología , Exposición a Riesgos Ambientales , Medición de Riesgo/métodos , Encuestas y Cuestionarios , Enfermedad Relacionada con los Viajes , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Bancos de Sangre , Donantes de Sangre/estadística & datos numéricos , Infecciones de Transmisión Sanguínea/sangre , Infecciones de Transmisión Sanguínea/prevención & control , Infecciones de Transmisión Sanguínea/transmisión , Enfermedades Transmisibles Emergentes/sangre , Enfermedades Transmisibles Emergentes/prevención & control , Enfermedades Transmisibles Emergentes/transmisión , Enfermedades Transmisibles Importadas/sangre , Enfermedades Transmisibles Importadas/prevención & control , Enfermedades Transmisibles Importadas/transmisión , Infecciones por Coronavirus/sangre , Infecciones por Coronavirus/prevención & control , Infecciones por Coronavirus/transmisión , Toma de Decisiones , Femenino , Humanos , Masculino , Persona de Mediana Edad , Medio Oriente , Coronavirus del Síndrome Respiratorio de Oriente Medio , Tamaño de la Muestra , Muestreo , Reacción a la Transfusión/prevención & control , Estados Unidos/epidemiología , Adulto Joven
6.
Transfusion ; 59(9): 2876-2884, 2019 09.
Artículo en Inglés | MEDLINE | ID: mdl-31198990

RESUMEN

BACKGROUND: Interventions intended to motivate donors to return can be costly and time consuming. The current study examined the effect of a Web-based automated interview, informed by motivational interviewing and self-determination theory, on donor intention, motivation, and behavior in a sample of highly experienced donors. STUDY DESIGN AND METHODS: Approximately 1 week after donating, 1177 highly experienced whole blood donors (mean prior donations, 35.5; mean age, 46.9 years; 66.3% female) participated in a study in which they were randomly assigned to either a donor motivational interview (n = 544) or knowledge interview (n = 633). Measures of donor motivation and psychological need support were obtained before the interviews, and again at postinterview assessments conducted approximately 2 days later and 7 weeks later. Blood center records were used to assess repeat donation attempts for 1 year after the interviews. RESULTS: Relative to the knowledge interview, participants in the motivational interview had larger increases in donation intention and self-efficacy from preinterview to the first follow-up. Among women only, the motivational interview was associated with greater competence and relatedness increases at both follow-up assessments. CONCLUSION: An automated motivational interview appears to be a feasible way to promote donation intention and self-efficacy. Although the observed effects were small among highly experienced donors, we are currently assessing the potential effect of this intervention among less experienced donors.


Asunto(s)
Donantes de Sangre/psicología , Intención , Intervención basada en la Internet , Entrevista Motivacional/métodos , Autoeficacia , Adulto , Actitud , Donantes de Sangre/estadística & datos numéricos , Computadores , Femenino , Humanos , Internet , Masculino , Persona de Mediana Edad , Periodicidad , Autonomía Personal , Adulto Joven
7.
JMIR Public Health Surveill ; 4(2): e44, 2018 04 26.
Artículo en Inglés | MEDLINE | ID: mdl-29699961

RESUMEN

BACKGROUND: Increasing repeat blood donation behavior is a critical public health goal. According to self-determination theory, the process of developing internal motivation to give blood and an associated self-identity as a blood donor may be promoted by feelings of "relatedness" or a connection to other donors, which may be enhanced through social relations and interactions. OBJECTIVE: The purpose of this report it to describe the development and pilot testing of a social networking-based (Facebook) intervention condition designed to increase feelings of relatedness via virtual social interaction and support. METHODS: To develop the intervention condition content, images, text, polls, and video content were assembled. Ohio University college students (N=127) rated the content (82 images/text) presented by computer in random order using a scale of one to five on various dimensions of relatedness. Mean ratings were calculated and analyses of variance were conducted to assess associations among the dimensions. Based on these results, the relatedness intervention was adapted and evaluated for feasibility, acceptability, and preliminary efficacy among 24 first-time donors, aged 18 to 24 years, in a 30-day pilot trial. Paired t-tests were conducted to examine change over time in relatedness and connectedness. RESULTS: The intervention condition that was developed was acceptable and feasible. Results of the uncontrolled, preintervention, and postintervention evaluation revealed that feelings of individual-level relatedness increased significantly after the intervention. CONCLUSIONS: By promoting first-time blood donor relatedness, our goal is to enhance internal motivation for donating and the integration of the blood donor identity, thus increasing the likelihood of future repeat donation. TRIAL REGISTRATION: ClinicalTrials.gov NCT02717338; https://clinicaltrials.gov/ct2/show/NCT02717338 (Archived by WebCite at http://www.webcitation.org/6ymHRBCwu)

8.
Transfusion ; 57(10): 2433-2439, 2017 10.
Artículo en Inglés | MEDLINE | ID: mdl-28671277

RESUMEN

BACKGROUND: Based on the hypothesis that self-determined motivation is associated with an increased likelihood of future behavior, the present study examined the ability of a motivational interview to promote internal motivation for giving blood and future donation attempts. STUDY DESIGN AND METHODS: A sample of 484 recent whole-blood and double red blood cell donors (62.4% female; age = 30.2 ± 11.8 years) were randomly assigned to either a telephone-delivered motivational interview or a control call approximately 6 weeks after donating. Several weeks before the call and again 1 week after the call, participants completed the Blood Donor Identity Survey, a multidimensional measure of donor motivation, to derive indices of amotivation, external motivation, and internal motivation to give blood. Repeat donation attempts were tracked using blood center records. RESULTS: Relative to controls, participants in the motivational interview group showed a shift toward more self-determined motivation, as indicated by significant decreases in amotivation (p = 0.01) and significant increases in external (p = 0.009) and internal (p = 0.002) motivation. Furthermore, those with initially high levels of autonomous motivation were more likely to make a donation attempt in the subsequent year if they completed the motivational interview (71.1%) versus the control call (55.1%). CONCLUSION: Motivational interviewing is a potentially useful strategy to enhance retention of existing blood donors, particularly among those who express a greater sense of internal motivation for giving.


Asunto(s)
Donantes de Sangre/provisión & distribución , Entrevistas como Asunto , Motivación , Adulto , Donantes de Sangre/psicología , Femenino , Humanos , Masculino , Autonomía Personal , Encuestas y Cuestionarios , Adulto Joven
9.
Transfusion ; 57(6): 1515-1521, 2017 06.
Artículo en Inglés | MEDLINE | ID: mdl-28474337

RESUMEN

BACKGROUND: Expanding the African American (AA) donor pool is critical to sustain transfusion support for sickle cell disease patients. STUDY DESIGN AND METHODS: The aims were to: 1) apply cognitive computing on donation related metrics to develop a predictive model that effectively identifies repeat AA donors, 2) determine whether a single e-mail communication could improve AA donor retention and compare retention results on higher versus lower predictive score donors, and 3) evaluate the effect of e-mail marketing on AA donor retention with culturally versus nonculturally tailored message. RESULTS: Between 2011 and 2012, 30,786 AA donors donated blood at least once on whom predictive repeat donor scores (PRDSs) was generated from donor-related metrics (frequency of donations, duration between donations, age, blood type, and sex). In 2013, 28% (8657/30,786) of 2011 to 2012 donors returned to donate on whom PRDS was validated. Returning blood donors had a higher mean PRDS compared to nonreturning donors (0.649 vs. 0.268; p < 0.001). In the e-mail pilot, high PRDS (≥0.6) compared to low PRDS (<0.6) was associated with 89% higher donor presentation rate (p < 0.001), 20% higher e-mail opening rate (p < 0.001), and, specifically among those who opened the e-mail, 159% higher presentation rate (p < 0.001). Finally, blood donation rate did not differ (p = 0.79) as a function of generic (n = 9312, 1.4%) versus culturally tailored (n = 9326, 1.3%) message. CONCLUSION: Computational algorithms utilizing readily available donor metrics can identify highly committed AA donors and in conjunction with targeted e-mail communication has the potential to increase the efficiency of donor marketing.


Asunto(s)
Algoritmos , Donantes de Sangre/estadística & datos numéricos , Correo Electrónico , Adolescente , Adulto , Negro o Afroamericano , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven
10.
Transfusion ; 57(4): 933-937, 2017 04.
Artículo en Inglés | MEDLINE | ID: mdl-28083954

RESUMEN

BACKGROUND: Previous studies have reported a relationship between blood donation and decreased risk for cardiovascular events, and it has been proposed that this may be due to a lowering of blood pressure among hypertensive individuals who donate on a regular basis. STUDY DESIGN AND METHODS: With the use of a retrospective longitudinal analysis, predonation blood pressure readings were examined across consecutive whole blood donations for New York Blood Center donors. With blood pressure levels recorded at the first, second, third, and fourth donations, the sample was divided into three subgroups including high (≥140 mmHg), intermediate (>100 and <40 mmHg), and low (≤100 mmHg) systolic blood pressure (SBP). In addition, a computational approach was used to estimate regression to the mean effects for donors with high SBP or high diastolic blood pressure (DBP) at their first, second, or third donation. RESULTS: Visual examination of SBP and DBP patterns across donations revealed that, on average, donors with extreme values at one donation had relatively normal values at the other donations. Further, comparison of computed expected versus observed blood pressure decreases supported the notion of a subsequent regression to the mean among donors with elevated SBP or DBP at Donation 1, 2, or 3. CONCLUSION: Among individuals who are hypertensive at initial donation, reductions in blood pressure at subsequent donations appear to result from regression to the mean as opposed to a salutary physiologic process.


Asunto(s)
Donantes de Sangre , Presión Sanguínea , Hipertensión/fisiopatología , Adulto , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Estudios Retrospectivos
11.
Contemp Clin Trials ; 53: 44-51, 2017 02.
Artículo en Inglés | MEDLINE | ID: mdl-27979752

RESUMEN

The Blood Donor Competency, Autonomy, and Relatedness Enhancement (Blood Donor CARE) project was designed as a practical application of self-determination theory to encourage retention of first-time donors. Self-determination theory proposes that people are more likely to persist with behaviors that are internally-motivated, and that externally-motivated behavior can evolve and become internalized given the appropriate socio-environmental conditions. According to self-determination theory, motivation to engage in blood donation may become increasingly self-determined if the behavior satisfies fundamental human needs for competence (a sense of self-efficacy to achieve specific goals), autonomy (a sense of volitional control over one's behavior), and relatedness (a sense of connection to a larger group). The primary aim of this randomized controlled trial is to examine the effect of competence, autonomy, and/or relatedness interventions on donor retention. Using a full factorial design, first-time donors will be assigned to a control condition or one of seven intervention conditions. Donation competence, autonomy, and relatedness, along with additional constructs associated with return donation, will be assessed before and after the intervention using online surveys, and donation attempts will be tracked for one-year using blood center donor databases. We hypothesize that, compared to the control condition, the interventions will increase the likelihood of a subsequent donation attempt. We will also examine intervention-specific increases in competence, autonomy, and relatedness as potential mediators of enhanced donor retention. By promoting first-time donor competence, autonomy, and relatedness our goal is to enhance internal motivation for giving and in so doing increase the likelihood of future donation.


Asunto(s)
Donantes de Sangre/psicología , Motivación , Autonomía Personal , Autoeficacia , Adolescente , Actitud Frente a la Salud , Femenino , Humanos , Intención , Masculino , Satisfacción Personal , Normas Sociales , Adulto Joven
12.
J Clin Apher ; 31(6): 551-558, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26915437

RESUMEN

BACKGROUND: The loss of iron stores and resulting iron deficiency is well documented in whole blood or red blood cell donors. We hypothesized that relative iron deficiency also occurs as a result of more frequent platelet- and plasma-pheresis (apheresis) donation. MATERIALS AND METHODS: To test this hypothesis, we proposed a pilot cross-sectional study to analyze erythropoiesis- and iron-related parameters in white male apheresis donors: (1) relative to controls, (2) in correlation with apheresis donation frequency, and (3) in correlation with pre-donation platelet count. RESULTS: Fifty eligible apheresis donors and eight controls were enrolled in the study. Apheresis donors were found to have a lower serum ferritin and serum hepcidin and exhibited evidence of iron restricted erythropoiesis relative to controls. Furthermore, among donors, lower MCV, CHr , hepcidin concentration, and serum ferritin were observed in more frequent apheresis donors. Correlations between donation frequency and hepcidin and ferritin were noted in apheresis donors. CONCLUSIONS: This pilot study demonstrates that apheresis donors are relatively iron deficient compared to controls and supports the premise that frequent apheresis donation correlates with relatively iron restricted erythropoiesis. An analysis of iron- and erythropoiesis-related parameters in a broader population of frequent apheresis donors (i.e., female and non-white donors) may demonstrate larger deficits and an even greater potential benefit of iron replacement. J. Clin. Apheresis 31:551-558, 2016. © 2015 Wiley Periodicals, Inc.


Asunto(s)
Donantes de Sangre , Deficiencias de Hierro , Plasmaféresis/efectos adversos , Plaquetoferesis/efectos adversos , Estudios de Casos y Controles , Estudios Transversales , Eritropoyesis , Ferritinas/sangre , Hepcidinas/sangre , Humanos , Masculino , Proyectos Piloto , Factores de Tiempo , Población Blanca
13.
Transfusion ; 56(6 Pt 2): 1636-44, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-26826054

RESUMEN

BACKGROUND: In contrast to standard donor retention strategies (e.g., mailings, phone calls, text messages), we developed a brief telephone interview, based on motivational interviewing principles, that encourages blood donors to reflect upon their unique motivators and barriers for giving. This study examined the effect of this motivational interview, combined with action and coping plan components, on blood donor motivations. STUDY DESIGN AND METHODS: The design was to randomly assign blood donors to receive either a telephone-delivered motivational interview with action and coping plan components or a control call approximately 6 weeks after their most recent donation. Participants completed a series of surveys related to donation motivation approximately 3 weeks before telephone contact (precall baseline) and then repeated these surveys approximately 1 week after telephone contact (postcall). RESULTS: The sample was 63% female, included a majority (52.6%) of first-time blood donors, and had a mean age of 30.0 years (SD, 11.7 years). A series of analyses of variance revealed that, relative to controls (n = 244), donors in the motivational interview group (n = 254) had significantly larger increases in motivational autonomy (p = 0.001), affective attitude (p = 0.004), self-efficacy (p = 0.03), anticipated regret (p = 0.001), and intention (p = < 0.001), as well as larger decreases in donation anxiety (p = 0.01), from precall baseline to postcall assessment. CONCLUSION: This study supports motivational interviewing with action and coping planning as a novel strategy to promote key contributors to donor motivation.


Asunto(s)
Donantes de Sangre/psicología , Donantes de Sangre/provisión & distribución , Entrevista Psicológica , Motivación , Adolescente , Adulto , Actitud , Emociones , Femenino , Humanos , Intención , Masculino , Autoeficacia , Encuestas y Cuestionarios , Teléfono , Voluntarios , Adulto Joven
14.
Contemp Clin Trials ; 44: 64-69, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26247570

RESUMEN

First-time blood donors are essential to the US donor pool, providing nearly a third of all donations. Unfortunately, there are a wide variety of obstacles to repeat donation and new donors are extremely difficult to retain. Because each donor experiences a unique set of deterrents, we developed a post-donation interview based on motivational interview principles in order to flexibly address individual barriers. The primary aim of this randomized clinical trial is to examine retention of first-time, group O blood donors who are randomly assigned to receive either a telephone-delivered interview with motivational and action planning components or a standard-of-care control call approximately six weeks after their donation. Measures of donation attitude, perceived behavioral control, intention, and motivational autonomy will be measured before and after the telephone contact using online surveys, and donation attempts will be tracked for one year using blood center donor databases. We hypothesize that, compared to controls, donors who receive the telephone interview will be more likely to make a donation attempt over the following year. In addition, we will examine possible mechanisms of action of the interview using key predictors of donation behavior as described by Self Determination Theory (i.e., motivational autonomy) and the Theory of Planned Behavior (i.e., attitude, perceived behavioral control, and intention). Results of this intervention may help to support a novel strategy to enhance retention of selected blood donors in an effort to better meet the nation's blood supply needs.

15.
Transfusion ; 53(10): 2123-9, 2013 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23113726

RESUMEN

BACKGROUND: The past few decades have seen a resurgence of interest in leukapheresis products to improve the survival of infected patients with neutropenia. These products have a short shelf life and require donor stimulation with dexamethasone before collection. Additionally, a system with good communications and logistical support is essential. A recent survey of blood centers in North America revealed that the majority of centers collecting leukapheresis products use steroid-stimulated donors. The survey results suggested that an analysis of the process and potential process improvement would be of interest to the transfusion medicine community. STUDY DESIGN AND METHODS: Data from 2008 to 2011 regarding donor selection, donor dexamethasone stimulation, leukapheresis collection, and correlations between potentially pertinent variables for process improvement were analyzed. Results from an analysis of cost are also included. RESULTS: We evaluate 432 leukapheresis donations and demonstrate correlations between 1) pre- and poststimulation white blood cell (WBC) count (p<0.0001), 2) interval (donor stimulation to collection) and poststimulation WBC count (p<0.0001), and 3) poststimulation WBC count and leukapheresis product granulocyte yield (p<0.0001). CONCLUSIONS: Significant improvement in granulocyte quality and yield can be accomplished in dexamethasone-stimulated donors, by selecting eligible donors with relatively high normal prestimulation WBC counts and/or previously good responses to dexamethasone, increasing the duration between dexamethasone stimulation and granulocyte collection, and maintaining optimal hematocrit (5%-10%) in granulocyte collections. Because the majority of surveyed blood centers collecting stimulated granulocytes use steroids alone, modifications presented here may prove useful. Further assessment of correlation between granulocyte yield and clinical outcome will await results of additional studies.


Asunto(s)
Leucaféresis , Adolescente , Adulto , Donantes de Sangre , Transfusión Sanguínea , Niño , Dexametasona/farmacología , Femenino , Factor Estimulante de Colonias de Granulocitos/farmacología , Humanos , Recuento de Leucocitos , Masculino
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