Thrombosis risk with haemoglobin C trait and haemoglobin C disease: A systematic review.

The thrombotic risk with haemoglobin C trait (HbAC) or haemoglobin C disease (HbCC) is unclear. However, individuals with HbCC have demonstrated chronic haemolysis, higher blood viscosity and altered rheology when compared to individuals with wild-type haemoglobin (HbAA). These physiological alterations may theoretically translate to increased risk of thrombosis; therefore, a systematic literature review was performed to investigate the possible association between HbAC and/or HbCC and thrombosis. Twenty-two studies met inclusion criteria representing 782 individuals with HbAC (n = 694) or HbCC (n = 88). Fifteen studies described the presence/absence of venous thromboembolism (VTE) in patients with HbAC (n = 685) or HbCC (n = 79), while seven studies described patients with HbAC (n = 9) or HbCC (n = 9) and arterial thrombosis. Most (n = 20) studies were case reports or case series; however, two studies suggested a potential increased VTE risk with HbAC compared to HbAA in (i) all patients (OR 2.2, 95% CI: 0.9-5.5) and in (ii) pregnant individuals (RR 3.7, 95% CI 0.9-16). This review is the largest assessment of patients with HbC trait or disease and thrombosis to date; despite its limitations, the findings suggest HbC may be a predisposing risk factor to thrombosis. Prospective cohort studies are warranted to definitively elucidate the risk of thrombosis in this population.

Use of half red blood cell units in oncology patients during severe shortages to extend hospital supply.

BACKGROUND: The COVID-19 pandemic exerted an unprecedented impact on the blood supply from 2020 through 2022. As a result, throughout 2021 there were months our hospital had less than one-day supply of type O RBCs. To meet transfusion needs, whole RBC units were split into half units and issued to stable, non-bleeding patients. This single-institution, retrospective study examines time intervals to subsequent transfusion and total numbers of RBC units subsequently transfused after the first half or whole RBC unit. STUDY DESIGN AND METHODS: Patients who were transfused RBC between May 21, 2021 and November 1, 2021 were divided into in- and outpatient groups, then based on whether they received at least 1 half RBC unit or only whole RBC units during the study period. The time interval between this first half unit transfusion, or first whole unit transfusion in those who did not receive half units, and the subsequent RBC transfusion within 90 days was calculated and compared, as well as the total number of RBC units transfused 30 days after the first unit. RESULTS: In general, patients transfused with half units received a subsequent transfusion significantly earlier than those transfused with whole units. Additionally, receiving an index half unit was associated with more RBC transfusions in the following 30 days (p = .001). CONCLUSION: Transfusion of half RBC units during a severe RBC blood shortage can temporarily decrease RBC usage but will result in a shorter interval to the next transfusion and greater total number of RBC units transfused in subsequent days.

How the United States syphilis epidemic may portend a resurgence of an unusual hematologic condition: The connection between syphilis and paroxysmal cold hemoglobinuria.

The connection between syphilis and paroxysmal cold hemoglobinuria.

New threats from an old foe: Evaluating the risk to the blood supply due to increasing incidence and endemicity of leprosy in the United States.

Leprosy (i.e., Hansen's disease) is a chronic disease secondary to infection with either Mycobacterium leprae or M. lepromatosis. While the incidence of this disease is decreasing across the world, there is mounting evidence that it might be increasing, and becoming endemic, in the United States. Leprosy was once considered a potential threat to the blood supply, and while this threat has not borne out, it is worth revisiting the available data to assess whether it may pose a threat in the future. Herein, we discuss the evidence for and against the potential for transfusion-transmission of leprosy, and highlight future areas of research to further elucidate this possibility.

A multi-institutional survey of apheresis services among institutions in the United States.

INTRODUCTION: Apheresis practices in the United States (US) have not been comprehensively characterized to date. This study aimed to address this gap by evaluating apheresis therapy through a national survey. METHODS: A multi-institutional survey was conducted between April and July 2023. The survey, comprising 54 questions, focused on institutional demographics, procedures, equipment, staffing, training, and impacts of the Coronavirus Disease 2019 (COVID-19) pandemic. Responses from 22 institutions, primarily academic medical centers, were analyzed. RESULTS: Therapeutic plasma exchange (TPE) was the most common procedure, followed by hematopoietic progenitor cell collection (HPC-A) and red blood cell exchange (RCE). CAR-T cell collections were widespread, with some institutions supporting over 30 protocols concurrently. Most sites used the Spectra Optia Apheresis System, were managed by a transfusion medicine service, and employed internal apheresis providers. Insufficient staffing levels, exacerbated by the COVID-19 pandemic, were common and most often addressed using overtime. DISCUSSION: The survey highlighted the ubiquity of TPE, expanding cellular collections and staffing challenges. The role of apheresis in supporting cellular therapy, particularly in newly developing cell and gene therapies and clinical trials, was evident. Staffing issues during the pandemic emphasized the need for innovative recruitment strategies. CONCLUSION: This nationwide survey provides the most comprehensive analysis to date of apheresis practices in large US academic centers.

Listening to Black Women's Perspectives of Birth Centers and Midwifery Care: Advocacy, Protection, and Empowerment.

INTRODUCTION: Black women in Texas experience high rates of adverse maternal outcomes that have been linked to health inequities and structural racism in the maternal care system. Birth centers and midwifery care are highlighted in the literature as contributing to improved perinatal care experiences and decreased adverse outcomes for Black women. However, compared with White women, Black women underuse birth centers and midwifery care. Black women's perceptions in Texas of birth center and midwifery care are underrepresented in research. Thus, this study aimed to highlight the views of Black women residing in Texas on birth centers and midwifery care to identify their needs and explore ways to increasing access to perinatal care. METHODS: Semistructured interviews were conducted with 10 pregnant and postpartum Black women residing in Texas. Questions focused on the women's access, knowledge, and use of birth centers and midwifery care in the context of their lived maternal care experiences. Interview transcripts were reviewed and analyzed using inductive, qualitative content analysis. RESULTS: The Black women interviewed all shared experiences of discrimination and bias while receiving obstetric care that affected their interest in and overall perceptions of birth center and midwifery care. Participants also discussed financial and institutional barriers that impacted their ease of access to birth center and midwifery care services. Additionally, participants highlighted the need for culturally sensitive and respectful perinatal health care. DISCUSSION: The Black women interviewed in this study emphasized the prevalence of racism and discrimination in perinatal health care encounters, a reflection consistent with current literature. Black women also expressed a desire to use birth centers and midwifery care but identified the barriers in Texas that impede access. Study findings highlight the need to address barriers to promote equitable perinatal health care access for Black women.

Development and Validation of an Instrument to Measure Barriers to Surgical Conscience Action in Perioperative Nurses.

Background: Surgical conscience is a concept well known to perioperative nurses, yet it is rarely studied. The purpose of this study was to develop and psychometrically validate an original instrument called the Surgical Conscience Scale with perioperative nurses. Methods: The Surgical Conscience Scale was designed after a review of the literature, the creation of a concept analysis, content validity, and pilot testing. Validity was explored by an exploratory factor analysis (EFA) and a confirmatory factor analysis (CFA) with separate groups of participants. Results: EFA results explained 55% of the variance with three factors: Foundational Components, Barriers to Surgical Conscience Action, and Required Attributes. The CFA findings did not support goodness-of-fit indices in total; however, a valid and reliable subscale was discovered that measures barriers to using one's surgical conscience. This six-item scale, now referred to as the Barriers to Surgical Conscience Action Scale, had all six items of this factor (.734, .754, .806, .689, and .573) with strong loadings (>.5). Additionally, a good reliability coefficient of the subscale (α = .874) supports the recommendation to use this subscale on its own to measure barriers of surgical conscience. Conclusion: The use of the Barriers to Surgical Conscience Action Scale can promote awareness about the harmful consequences of failed action on behalf of perioperative nurses and help promote proficient surgical conscience usage.

Sex, Age, and Patient Experience in Cardiologist Reviews: A Large-Scale Artificial Intelligence-Enabled Analysis.

Background: Patients are increasingly using online reviews to evaluate cardiologists. Online reviews can provide insights into factors driving patient satisfaction. Little is known about the effects of age and sex on the patient experience with cardiologists. Objectives: The purpose of this study was to apply natural language processing techniques on online reviews to determine the factors underlying positive and negative patient experiences and the effects of age and sex on the patient experience with cardiologists. Methods: Mixed effects logistic regression and sentiment analysis were applied to online cardiologist reviews from Healthgrades between 1998 and 2023. The results were then analyzed by sex and age to show trends with respect to rating statistics, sentiment analysis, and frequency of 2-word phrases. Results: There were 100,334 online reviews of 9,461 cardiologists. Female cardiologists received lower average ratings compared to male cardiologists and were 34.5% less likely to receive a positive review (OR: 0.655; 95% CI: 0.481-0.893; P = 0.015). Older cardiologists received lower average ratings compared to younger cardiologists (4.145 ± 0.908 vs 4.348 ± 0.795; P < 0.01). Positive reviews were associated with time spent with patients (OR: 1.383; 95% CI: 1.251-1.528; P < 0.01), answering questions (OR: 2.622; 95% CI: 2.324-2.959; P < 0.01), and patients feeling they could trust their providers' decisions (OR: 2.285; 95% CI: 2.053-2.543; P < 0.01). Conclusions: Positive reviews were associated with cardiologists being comprehensive and patients feeling a sense of trust in the relationship. There was a difference in ratings based on age and sex with female and older cardiologists receiving lower ratings.

Clinical management of a patient following a granulocyte transfusion from a donor positive for COVID-19.

Granulocyte transfusions are indicated for patients with severe neutropenia and evidence of bacterial or fungal infection who are unresponsive to standard antimicrobial therapy. With a limited expiration time of 24 hours after collection, granulocytes are often transfused before results of infectious-disease screening tests are available, and before a transfusion service can perform a risk assessment if postdonation information is provided after the collection. The case we describe herein demonstrates a clinical scenario meeting indications for granulocyte transfusion, coupled with the clinical management undertaken after the granulocyte donor disclosed a positive result for a COVID-19 self-test taken 1 day after donation. In this case, the patient did not develop new COVID-19 symptoms and tested negative for COVID-19 after transfusion of the implicated unit. These findings add to the body of evidence in the literature that COVID-19 is not transmitted via blood transfusion.

Assessing Recommendations for Determining Fetal Risk in Alloimmunized Pregnancies in the United States: Is It Time to Update a Decades-Old Practice?

The current recommended testing algorithm for assessing the alloimmunized pregnancy utilized by many obstetricians in the United States (US) fails to consider the most recent evidence, placing fetuses, and mothers at unnecessary risk of poor outcome or death. This narrative review of the current landscape of fetal red blood cell (RBC) antigen testing evaluates the history of hemolytic disease of the fetus and newborn (HDFN) and how its discovery has continued to influence practices in the US today. We compare current US-based HDFN practice guidelines with those in Europe. We also provide transfusion medicine and hematology perspectives and recommendations addressing the limitations of US practice, particularly regarding paternal RBC antigen testing, and discuss the most valuable alternatives based on decades of data and evidence-based recommendations from Europe.

Childhood and adolescent residential and farm pesticide exposures and inflammatory bowel disease incidence in a U.S. cohort of women.

BACKGROUND AND AIMS: There are few known risk factors for inflammatory bowel disease (IBD), an autoimmune disease characterized by chronic intestinal inflammation. Use of specific pesticides has been associated with higher incidence of IBD among pesticide applicators and their spouses, but no study has examined pesticide exposure in early life, a period where the human immune system undergoes rapid changes. We evaluated pesticide use during childhood and adolescence and incidence of IBD among US women enrolled in the Sister Study. METHODS: Incident IBD diagnoses between enrollment (2003-2009) and 2021 were identified and validated with medication use and colectomy/colostomy surgery. We estimated hazard ratios (HR) and 95 % confidence intervals (CI) for the relationship of childhood/adolescent residential and farm pesticide exposures with IBD incidence using Cox models, accounting for age, race and ethnicity, education, smoking, and birth year. RESULTS: We identified 277 incident IBD cases among 48,382 eligible participants. IBD hazard was elevated among those whose childhood residence was regularly treated with pesticides, especially among those who ever personally applied pesticides (HR = 1.39, 95%CI: 0.65, 2.99). We observed a positive association between IBD and exposure to broadcast pesticide sprays before DDT was banned (>6 times vs. never HR = 1.56, 95%CI: 1.06, 2.31). Among participants who lived on a farm during childhood/adolescence for ≥1 year (N = 9162), IBD hazards were higher among those who were in crop fields during pesticide application (HR = 2.06, 95%CI: 0.94, 4.51) and who ever personally applied pesticides on crops (HR = 1.85, 95%CI: 0.81, 4.18) or livestock (HR = 2.58, 95%CI: 1.14, 5.83). CONCLUSION: Early-life pesticide exposure may be a novel risk factor for IBD. Practices that reduce pesticide exposure during early life may help reduce the burden of this disease.

Gender Inequities in Transfusion Medicine Society Recognition Awards.

Award recognition by medical societies contributes to professional development, career networking, and academic rank promotion. Previous research has demonstrated that men are the predominant recipients of medical society awards across multiple medical specialties; as such, we sought to understand whether women are underrepresented as award recipients amongst blood banking and transfusion medicine (BBTM) medical societies. We examined recipients of 10 total awards from the Association for the Advancement of Blood and Biotherapies (AABB) and the American Society for Apheresis. Additional evaluation of AABB's National Blood Foundation Hall of Fame inductees was conducted. Gender was determined via online review of pronouns, online photographs, and a web-based gender identification application. Award recipient gender was analyzed and coded independently by two authors, and any discrepancies were adjudicated by author consensus. Of the 330 AABB awards since 1954, significantly more have been conferred to men (81.5%, 269/330; P < .001). Of the 51 American Society for Apheresis awards presented since 1993, 64.7% (33/51; P = .23) have been conferred to men. Compared to the first 10 years of the AABB awards (1954-1964), there has been a significant increase in the proportion of women award recipients in the most recent decade (2010-2021) (18.5%, 5/27 vs 29.4%, 30/102; P < .001). However, additional temporal analysis of the modern era (2000-2021) revealed men have received significantly more AABB awards than women (77.4%, 144/186 vs 22.6%, 42/186; P < .001). Our findings highlight both historic and contemporary inequity for recognition of women within BBTM. Without improvement, gender parity among BBTM award recipients will take approximately 120 years (11% increase in women awardees in 60 years); thus, to ensure the BBTM field continues to progress, we must advocate for equity among all members, including but not limited to gender, race, and ethnicity. Strategies to enhance equity include transparency in the identities of award nominees, award recipients, and individuals on selection committees, the gender ratios of both award nominees and recipients, and implementation of methods for tracking individual demographics over time. These strategies would permit temporal analysis of the ratio of award nominee gender to award recipient gender, and assessment as to whether potential gender inequities improve over time.