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Despite bold commitments to reduce anemia, little change in prevalence was observed over the past decade. We aimed to generate subnational maps of anemia among women of reproductive age (WRA), malaria transmission, and hemoglobinopathies to identify priority areas, but also explore their geographical overlap.
Design:
Using the most recent Demographic and Health Surveys (DHS), we first mapped anemia clusters across Sub-Sahara Africa (SSA) and identified the WCA as a major cluster. Geographic clusters with high anemia and related etiologic factors were identified using spatial statistics. Multilevel regression models were run to identify factors associated with any, moderate and severe anemia.
Settings:
West and Central African countries (n=17).
Participants:
WRA (n= 112,024) residing in 17 WCA countries.
Results:
There was a significant overlap in geographical clusters of anemia, malaria, and hemoglobinopathies, particularly in the coastal areas of the WCA region. Low birth interval (0.86 [0.77, 0.97]), number of childbirth (1.12 [1.02, 1.23]), being in the 15-19 age range (1.47 [1.09, 1.98])) were associated with increased odds of any anemia. Unimproved toilet facility and open defecation were associated with any anemia, whereas the use of unclean cooking fuel was associated with moderate/severe anemia (P<0.05). Access to health care facility, living in malaria prone areas, and hemoglobinopathies (HbC and HbS) were all associated with any, moderate or severe anemia.
Conclusion:
Interlinkages between infection, hemoglobinopathies, and nutritional deficiencies complicate the etiology of anemia in the WCA region. Without renewed efforts to integrate activities and align various sectors in the prevention of anemia, progress is likely to remain elusive.
Edited by
Laurie J. Mckenzie, University of Texas MD Anderson Cancer Center, Houston,Denise R. Nebgen, University of Texas MD Anderson Cancer Center, Houston
Leukemias represent a range of bone marrow disorders that are broadly differentiated into acute and chronic. Acute leukemias, characterized by the proliferation of immature blood cells (blasts) and defined by peripheral blood or bone marrow blast percentage of 20 percent or more, are aggressive hematologic malignancies that are universally fatal without treatment. Chronic leukemias are mature leukemias with differentiated cells. Obstetric and gynecologic complications pose significant risk to the patient. Knowledge regarding uterine bleeding, fertility planning, and the management of the pregnant patient with leukemia are necessary in order to appropriately address these patients. In this chapter, we briefly review both acute and chronic leukemias, epidemiology, diagnosis and management, obstetric and gynecologic complications, teratogenicity of chemotherapies utilized in the treatment of each leukemia and finally detail our approach to the management of these patients.
The experimental microcirculatory analysis of treating anemia by blood transfusion shows that it minimally increases oxygen (O2) delivery by the capillary circulation, where O2 pressure (pO2), hematocrit (Hct) and capillary hydraulic pressure (pC) are normally 1/5 of systemic, and further depressed by anemia. The concomitant decrease of functional capillary density becomes lethal when falling below a specific threshold due to the decrease in pC, and requires re-pressurizing the microcirculation without increasing the heart’s work load. These effects are achieved by increasing plasma blood viscosity using a viscous plasma expander. This approach significantly elevates capillary blood viscosity and shear stress, increasing the production of the vasodilator NO, becoming significantbecause of the large capillary endothelial surface area, and because increased NO tends to lower O2 consumption. We show that using hyperviscous plasma expanders increases FCD, blood flow velocity and the rate of RBC delivery to the tissues. They could ultimately justify transfusing blood when DO2 falls to ¼ of normal, which is 4 times the normal organism metabolic requirement at rest.
Sickle cell disease (SCD) is caused by an autosomal recessive mutation in the β-globin chain of hemoglobin A (HbA), causing the mutated hemoglobin S (HbS). In a vaso-occlusive crisis (VOC), sickled red blood cells (RBCs) increase the viscosity of blood and cause microvascular occlusion, contributing to hypoxia, acidosis and further sickling. The clinical manifestations of SCD are diverse and are related to chronic hemolysis with periodic episodes of vascular occlusion that can affect nearly every organ system.
Spaceflight associated neuro-ocular syndrome (SANS) is a collection of distinct findings seen in some astronauts following prolonged spaceflight and is characterized by: optic disc edema, globe flattening, and choroidal folds. In this manuscript, we describe the potential mechanisms linking anemia and SANS. Future research aimed at understanding the relationship between these conditions may help to develop countermeasures and mitigation efforts for SANS.
The purpose of this exploratory study was to describe associations between NIH Toolbox-Cognition Battery subtests and legacy measures of neurocognitive function in two samples with neurological conditions (stroke and sickle cell disease (SCD)).
Method:
This exploratory secondary analysis uses data from two studies that assessed cognition at one time point using the NIH Toolbox-Cognition Battery, the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS), and subtests from the Delis-Kaplan Executive Functions System (DKEFS). People with stroke (n = 26) and SCD (n = 64) were included. Associations between the NIH Toolbox-Cognition Battery subtests and corresponding legacy measures were examined using linear correlations, Bland–Altman analysis, and Lin’s Concordance Correlation Coefficient.
Results:
Linear correlations and Lin’s Concordance Correlation Coefficient were poor to strong in both samples on NIH Toolbox-CB subtests: Flanker Inhibitory Control and Attention (r = .35 to .48, Lin CCC = .27 to .37), Pattern Comparison Processing Speed (r = .40 to .65, Lin CCC = .37 to .62), Picture Sequence Memory (r = .19 to .55, Lin CCC = .18 to .48), Dimensional Change Card Sort (r = .39 to .77, Lin CCC = .38 to .63), Fluid Cognition Composite (r = .88 to .90, Lin CCC = .60 to .79), and Total Cognition Composite (r = .64 to .83, Lin CCC = .60 to .78). Bland–Altman analyses demonstrated wide limits of agreement across all subtests (–3.17 to 3.78).
Conclusions:
The NIH Toolbox-Cognition Battery subtests may behave similarly to legacy measures as an overall assessment of cognition across samples at risk for neurological impairment. Findings should be replicated across additional clinical samples.
Hematologic abnormalities occur commonly in the elderly. The prevalence of anemia appears to increase with age and may be caused by various underlying etiologies, including iron deficiency, anemia of inflammation, or myelodysplastic syndrome. Thrombocytopenia due to underlying comorbidities, medications, or immune thrombocytopenia (ITP) may also occur. Hematologic malignancies such as chronic lymphocytic leukemia (CLL) and multiple myeloma also become more prevalent with age. A systematic approach to the evaluation of these hematologic abnormalities is imperative to help guide diagnosis and management. For acute or progressive conditions, a multidisciplinary team of both geriatricians and hematologists is essential to ensure proper diagnosis, frailty assessment, and initiation of appropriate therapies. Novel therapies for the various hematological malignancies are well tolerated, turning life-threatening illnesses into chronic disease that can be managed while preserving quality of life.
A 40-year-old nulligravid woman presents to the office for management of abnormal uterine bleeding. She reports a four-year history of heavy menses, which often lasts for two weeks in length and requires at least 10 sanitary pads per day. She denies abdominal pain or associated dizziness during menses. She reports prior use of multiple hormonal medications, including oral medroxyprogesterone and combined oral contraceptive pills, without improvement in her bleeding patterns. She is not currently taking any medications other than over-the-counter ferrous sulfate. Her past medical history is significant for iron deficiency anemia. She denies any surgical history. She has no plans for future fertility and would like definitive surgical management. When signing the surgical consent, she refuses transfusion of blood products.
Twin pregnancies, especially those in which the twins share one placenta but have separate amnion sacs (referred to monochorionic, diamniotic or Mo-di twins), are at risk for a number of complications. Most notable of these is twin-twin transfusion syndrome. This condition can result in fetal morbidity or intrauterine fetal demise but is also amenable to surgical intervention. Severe discordance in amniotic fluid volumes between each twin is the prenatal finding that highlights this diagnosis. Selective laser photocoagulation has greatly improved the survival of twins with this condition. With a posteriorly located placenta, laser ablation of the abnormal placenta vascular communications can be achieved with local anesthesia and maternal sedation. Anterior placenta location may present a challenge for uterine access that may require modification of the anesthetic technique.
Anemia has created attention worldwide because of its adverse effects on the mother and the fetus during pregnancy. A large body of evidence has shown that pregnant women are the most vulnerable group to anemia.
Objectives:
This study aims to determine the prevalence of anemia, and associated risk factors, among pregnant women attending antenatal care (ANC) at government and private hospitals in Bangladesh.
Methods:
This cross-sectional study included 424 pregnant women, who visited hospitals for ANC from January to July 2019. We used a simple random sampling technique to select study subjects. Data were collected using a structured questionnaire and participant’s current medical record cards. SPSS software was used for analyzing data.
Results:
The prevalence of anemia was 62.5% and significantly (P < 0.001) higher in the subjects attending ANC in government hospitals (68.7%) than in private (55.0%) hospitals. The prevalence of the severity of anemia was 28.3% mild, 36.9% moderate, and 3.40% severe in government hospitals while in private hospitals was 14.7% mild, 39.8% moderate, and 0.5% severe anemia. Anemia was significantly associated with maternal age 20–25 years [adjusted odds ratio (AOR) = 1.9] and 26–30 years (AOR = 2.37), monthly family income (300–500) US$ (AOR = 2.76), and ANC in government hospitals (AOR = 2.02), the parity [multiparous (AOR = 1.92)], gravidity [multigravid (AOR = 1.63)], contraception [no contraception (AOR = 2.50), and iron supplement [no iron supplement (AOR = 0.64).
Conclusions:
The result suggests that pregnant women should receive routine ANC and recognize iron supplementation during pregnancy. Finally, the results of this study are particularly relevant for pregnant women who are receiving ANC.
The effects of iron deficiency on the prognosis of idiopathic sudden sensorineural hearing loss are unclear. This study aimed to investigate the association between serum iron levels and idiopathic sudden sensorineural hearing loss prognosis and its usefulness as an independent prognostic marker for idiopathic sudden sensorineural hearing loss.
Methods
The audiological and haematological data, including hearing recovery and serum iron levels, of 103 patients with idiopathic sudden sensorineural hearing loss evaluated between 2015 and 2018 were retrospectively analysed.
Results
The overall complete recovery rate was 16.5 per cent. Initial higher hearing threshold was associated with poor idiopathic sudden sensorineural hearing loss prognosis. Serum iron levels were significantly higher in the complete recovery group than in the non-complete recovery group (p < 0.05).
Conclusion
The possibility of complete recovery from idiopathic sudden sensorineural hearing loss was significantly lower with lower serum iron levels, suggesting that the serum iron level might be a novel prognostic marker for idiopathic sudden sensorineural hearing loss.
The history of Athens was influenced by the health of her citizens; from birth to old age, disease, injury, and warfare threatened the lives of citizens, or made them unable to participate in the life of the city. The study of skeletal remains from burials in Athens reveals the effect of these threats, and offers new information on historical plagues, attacks on the city, and ordinary events in the lives of Athenians.
Bone marrow (BM) hyperplasia, a non-neoplastic expansion of one or more of the haematopoietic cell lineages due to an increased number of cells, can manifest in a range of morphological appearances depending on the underlying cause. Similarly to other tissue types, hyperplasia is often associated with an increase in the number of cells with less mature morphology. It is this reactive atypia/dyshaemopoietic morphology that needs careful assessment and correlation/integration with clinical, biochemical, radiological and often molecular findings to correctly interpret the underlying process and avoid misdiagnosis as a neoplastic proliferation. This chapter will consider erythroid, myeloid and megakaryocytic hyperplasia. Reactive conditions of histiocytes are covered in Chapter 6.
role of global cognition in the association between Anemia and depression.
Background:
We examined the longitudinal relationships between hemoglobin concentrations or Anemia and depression and whether baseline cognitive function modifies these longitudinal relationships over 4 years of follow-up.
Methods:
A total of 1608 community-dwelling older adults from the International Mobility in Aging Study (IMIAS) aged 65 to 74 years were recruited in Natal (Brazil), Manizales (Colombia), Kingston (Ontario, Canada), and Saint-Hyacinthe (Quebec, Canada). The study outcome was depression, defined by a score of 16 or over in the Center for Epidemiologic Studies Depression Scale (CES-D). Longitudinal associations over four years follow-up were examined using generalized estimating equations. Models reported were either unadjusted and adjusted for research sites, alcohol drinking status, body mass index, chronic conditions, activities of daily life disabilities, and polypharmacy.
Results:
Longuitinal relationships suggested an evidence of multiplicative interaction by baseline global cognition in which 1g/dL increase in hemoglobin concentrations there was a significant reduction in the risk of depression with a stronger effect among participants with good cognitive function (Odds Ratio (OR)=0.85, 95% CI: 0.78-0.92) compared to those with poor cognition (OR=0.89, 95% CI: 0.80-0.97). Anemia and poor cognition at baseline were associated with an increased risk of depression over four years of follow-up (OR=5.80, 95% CI: 1.84-18.23). Global cognition was also an effect modifier of the longitudinal association between the severity of Anemia and depression.
Conclusion:
In international samples of older adults, hemoglobin concentrations, as well as the severity of Anemia, were independent risk factors for depression, and these associations differed by global cognitive function.
Chapter six, “The Struggle Against Hookworm Disease,” examines the early campaigns of the Rockefeller Foundation to reduce transmission of the widespread helminthic infection. Launched in the southern United States and then extended southward in the western hemisphere and into the eastern hemisphere, the anti-hookworm campaigns became the very first global health initiative. Although the campaigns utilized chemical therapies to reduce the intestinal worm load, their primary focus was on changing defecation habits, to encourage better sanitation. The campaigns failed to meet their goals, underscoring the limitations of mass drug treatment and the difficulties of changing entrenched defecation practices and the use of human waste as fertilizer.
This study investigated the health effects of Lake Urmia’s drought on adjacent urban and rural areas and people.
Methods:
The data for sociodemographic status, physical activity, dietary pattern, smoking, and angina of the subjects living in areas adjacent to and far from Lake Urmia were collected through validated questionnaires. Physical examinations, including blood pressure, anthropometrics, and biochemical measurements, were performed.
Results:
There were no significant differences between 2 areas in the case of age, sex, educational, and physical activity and smoking status (P > 0.05). The mean systolic and diastolic blood pressures and the prevalence of hypertension, prehypertension, and anemia in cases living in the adjacent areas were significantly higher than those in the control group (P < 0.05). No significant differences were observed between 2 districts in the prevalence of hyperlipidemia, overweight/obesity, asthma, angina, infraction, diabetes, and vitamin D insufficiency/deficiency.
Conclusions:
Our data showed that Lake Urmia’s drought has serious effects on hypertension and anemia. More longitudinal and well-designed studies are needed to confirm these results.
Objectives: Although pediatric obstructive sleep apnea (OSA) is estimated to affect 2–3% of the general population, its prevalence in sickle cell disease (SCD) is much higher, with research suggesting a prevalence rate of upwards of 40%. Despite the similar underlying pathophysiological mechanisms of neurocognitive effects in pediatric OSA and SCD, there is a scarcity of information on how these two conditions interact. The aim of this study was to better understand the contribution of sleep apnea to neurocognitive deficits in children diagnosed with SCD. Method: This study assessed cognitive function in 26 children with comorbid SCD and OSA, 39 matched comparisons with SCD only, and 59 matched comparisons in children without a chronic health condition. Results: There were significant differences on measures of processing speed and reading decoding, with children without a chronic health condition scoring better than both chronic health condition groups. Additionally, the no chronic health condition group performed better on a test of quantitative knowledge and reasoning and a test of visual–spatial construction than the SCD-only group. Contrary to our hypotheses, there were no between-group differences suggesting an additive impact of OSA on cognition. Exploratory analyses revealed associations within the group that had OSA showing that more severe OSA correlated with lower performance on measures of processing speed and quantitative knowledge/reasoning. Conclusions: Children with comorbid OSA and SCD do not present with greater deficits in cognitive functioning than children with SCD alone. However, severe OSA may confer additional risk for neurocognitive impairments.
To study the frequency of laboratory test abnormalities, and electrophysiological correlations, we performed a retrospective chart review of 226 patients with polyneuropathy. The frequency of laboratory test abnormalities, and correlations with electrophysiological findings were explored. Abnormal glucose handling tests were the most common findings (54%), followed by paraproteinemia (21%) and anemia (21%). The frequencies of paraproteinemia and anemia in our cohort were significantly higher than previously reported. In addition, several laboratory abnormalities correlated with electrophysiological findings of median neuropathy at the wrist, expanding current knowledge about the deleterious effects of various metabolic and hematologic derangements at this site.
As a pilot study to investigate whether personalized medicine approaches could have value for the reduction of malaria-related mortality in young children, we evaluated questionnaire and biomarker data collected from the Mother Offspring Malaria Study Project birth cohort (Muheza, Tanzania, 2002–2006) at the time of delivery as potential prognostic markers for pediatric severe malarial anemia. Severe malarial anemia, defined here as a Plasmodium falciparum infection accompanied by hemoglobin levels below 50 g/L, is a key manifestation of life-threatening malaria in high transmission regions. For this study sample, a prediction model incorporating cord blood levels of interleukin-1β provided the strongest discrimination of severe malarial anemia risk with a C-index of 0.77 (95% CI 0.70–0.84), whereas a pragmatic model based on sex, gravidity, transmission season at delivery, and bed net possession yielded a more modest C-index of 0.63 (95% CI 0.54–0.71). Although additional studies, ideally incorporating larger sample sizes and higher event per predictor ratios, are needed to externally validate these prediction models, the findings provide proof of concept that risk score-based screening programs could be developed to avert severe malaria cases in early childhood.