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1.
BMC Pregnancy Childbirth ; 22(1): 16, 2022 Jan 06.
Artículo en Inglés | MEDLINE | ID: mdl-34986796

RESUMEN

BACKGROUND: The Sustainable development goals, which focus strongly on equity, aim to end all forms of malnutrition by 2030. However, a significant cause of intergenerational transfer of malnutrition, anaemia in pregnancy, is still a challenge. It is especially so in the low- and middle-income settings where possible context-specific aetiologies leading to anaemia have been poorly explored. This study explores the prevalence of etiological factors significantly contributing to anaemia in pregnancy in Sri Lanka, a lower-middle-income country with a high prevalence of malnutrition albeit robust public health infrastructure. METHODS: All first-trimester pregnant women registered in the public maternal care programme in the Anuradhapura district from July to September 2019 were invited to participate in Rajarata Pregnancy Cohort (RaPCo). After a full blood count analysis, high-performance liquid chromatography, peripheral blood film examination, serum B12 and folate levels were performed in anaemic participants, guided by an algorithm based on the red cell indices in the full blood count. In addition, serum ferritin was tested in a random subsample of 213 participants. Anaemic women in this subsample underwent B12 and folate testing. RESULTS: Among 3127 participants, 14.4% (95%CI 13.2-15.7, n = 451) were anaemic. Haemoglobin ranged between 7.4 to 19.6 g/dl. 331(10.6%) had mild anaemia. Haemoglobin ≥13 g/dl was observed in 39(12.7%). Microcytic, normochromic-normocytic, hypochromic-normocytic and macrocytic anaemia was observed in 243(54%), 114(25.3%), 80(17.8%) and two (0.4%) of full blood counts in anaemic women, respectively. Microcytic anaemia with a red cell count ≥5 * 106 /µl demonstrated a 100% positive predictive value for minor haemoglobinopathies. Minor hemoglobinopathies were present in at least 23.3%(n = 105) of anaemic pregnant women. Prevalence of iron deficiency, B12 deficiency and Southeast Asian ovalocytosis among the anaemic was 41.9% (95%CI 26.4-59.2), 23.8% (95%CI 10.6-45.1) and 0.9% (95%CI 0.3-2.3%), respectively. Folate deficiency was not observed. CONCLUSION: Even though iron deficiency remains the primary cause, minor hemoglobinopathies, B 12 deficiency and other aetiologies substantially contribute to anaemia in pregnancy in this study population. Public health interventions, including screening for minor hemoglobinopathies and multiple micronutrient supplementation in pregnancy, should be considered in the national programme for areas where these problems have been identified.


Asunto(s)
Anemia/clasificación , Anemia/epidemiología , Anemia/etiología , Complicaciones Hematológicas del Embarazo/clasificación , Complicaciones Hematológicas del Embarazo/epidemiología , Complicaciones Hematológicas del Embarazo/etiología , Primer Trimestre del Embarazo , Adulto , Anemia/sangre , Estudios de Cohortes , Índices de Eritrocitos , Femenino , Ferritinas/sangre , Deficiencia de Ácido Fólico/complicaciones , Hemoglobinopatías/complicaciones , Hemoglobinas/análisis , Humanos , Deficiencias de Hierro/complicaciones , Embarazo , Complicaciones Hematológicas del Embarazo/sangre , Prevalencia , Sri Lanka/epidemiología , Deficiencia de Vitamina B 12/complicaciones
2.
Asia Pac J Clin Nutr ; 29(3): 513-522, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32990611

RESUMEN

BACKGROUND AND OBJECTIVES: The association between diet and macrocytic and hypochromic anemia in young Chinese men and women remains unclear. The present study aimed to investigate the relationship between dietary pattern and macrocytic and hypochromic microcytic anemia in young Chinese men and women. METHODS AND STUDY DESIGN: Some 4,840 first-year students (2,385 men and 2,455 women) were recruited for this study from Qingdao University, China. Biochemical and hematological parameters, and food frequency questionnaires were obtained from the subjects. Based on dietary intake, participants were divided into three dietary patterns: seafood dietary pattern (SDP), vegan dietary pattern (VDP) and omnivorous dietary pattern (ODP). The risks for macrocytic and microcytic hypochromic anemia in three dietary patterns were assessed. RESULTS: Macrocytic and hypochromic anemia were less common in participants who adhered to the omnivorous dietary pattern than to the vegan or seafood dietary patterns (p<0.05). Adhering to an omnivorous dietary pattern was negatively associated with macrocytic anemia in men [odds ratio (95% CI): 0.74 (0.62, 0.89), p<0.001] and microcytic, hypochromic anemia in both genders [men: odds ratio (95% CI): 0.64 (0.45, 0.92), p=0.01; women: odds ratio (95% CI): 0.71 (0.51, 0.99), p=0.04]. CONCLUSIONS: Adhering to an omnivorous dietary pattern was associated with less common macrocytic anemia in young men and microcytic, hypochromic anemia. Dietary diversity is important in preventing macrocytic anemia in men and also microcytic, hypochromic anemia in young men and women. Excessive alcohol intake is the most plausible explanation for macrocytosis in the young men.


Asunto(s)
Anemia/clasificación , Anemia/epidemiología , Dieta , Conducta Alimentaria , Animales , Femenino , Humanos , Masculino , Carne , Alimentos Marinos , Veganos , Adulto Joven
3.
Colorectal Dis ; 21(1): 100-109, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-30230148

RESUMEN

AIM: Preoperative anaemia is associated with adverse outcomes in colorectal cancer (CRC). To clarify the reason for this we aimed to comprehensively assess the association of preoperative anaemia with tumour characteristics, host systemic inflammation and nutrition status, and perioperative blood transfusion. METHOD: We used an integrated database of 592 CRC patients. The association of preoperative anaemic subtype, calculated from haemoglobin and erythrocyte mean corpuscular volume levels, with patient outcome, preoperative serum data relating to systemic inflammation and nutrition and perioperative blood transfusion was analysed. RESULTS: Preoperative anaemia was significantly associated with poorer overall survival and relapse-free survival (RFS); in particular microcytic anaemia had a trend to poorer RFS than other forms of anaemia (P = 0.0648). In addition, preoperative anaemia was significantly correlated with right-sided tumours, greater depth of tumour invasion, use of neoadjuvant chemotherapy, poorer prognostic nutritional index and higher modified Glasgow Prognostic Score (mGPS). Microcytic anaemia in particular had a strong association with a greater depth of tumour invasion (P = 0.0072) and higher mGPS (P = 0.0058) than other causes of anaemia. Perioperative blood transfusion for CRC patients with anaemia was associated with adverse outcomes. CONCLUSIONS: Preoperative anaemia, especially microcytic anaemia, was associated with poor patient outcomes, possibly due to poor systemic inflammatory and nutritional status, and it was not improved by perioperative blood transfusion. Our data suggest that preoperative anaemia and the anaemic subtype may serve as an easily available predictor of outcome in CRC.


Asunto(s)
Anemia/epidemiología , Neoplasias Colorrectales/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Anemia/clasificación , Anemia/metabolismo , Anemia Macrocítica/epidemiología , Anemia Macrocítica/metabolismo , Transfusión Sanguínea , Proteína C-Reactiva/metabolismo , Neoplasias Colorrectales/patología , Supervivencia sin Enfermedad , Índices de Eritrocitos , Femenino , Hemoglobinas/metabolismo , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Terapia Neoadyuvante , Invasividad Neoplásica , Evaluación Nutricional , Periodo Preoperatorio , Pronóstico , Modelos de Riesgos Proporcionales , Albúmina Sérica/metabolismo , Tasa de Supervivencia , Resultado del Tratamiento , Adulto Joven
4.
Transfus Apher Sci ; 58(4): 375-385, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31326294

RESUMEN

Anemia is common in everyday clinical practice. In the following, the characteristics of apparently proven as well as new biomarkers are presented - for diagnosis and therapy control, considering their diagnostic value. In spite of new diagnostic tools, the importance of microscopy in hematological manifestations is illustrated. Based on a classification of anemia, a strategy is proposed for an economic diagnosis of different types of anemia and their predisposition.


Asunto(s)
Anemia/sangre , Anemia/clasificación , Anemia/diagnóstico , Biomarcadores/sangre , Diagnóstico Diferencial , Humanos
5.
J Formos Med Assoc ; 115(10): 860-866, 2016 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-27511590

RESUMEN

BACKGROUND/PURPOSE: Erosive oral lichen planus (EOLP) patients with desquamative gingivitis (DG) are sometimes encountered in our oral mucosal disease clinic. This study assessed hematinic deficiencies and anemia statuses in antigastric parietal cell antibody (GPCA)-positive EOLP patients with DG (GPCA+/DG+/EOLP patients). METHODS: The blood hemoglobin, iron, vitamin B12, folic acid, and homocysteine concentrations and serum GPCA levels in 92 GPCA+/DG+/EOLP patients and 184 age- and sex-matched healthy controls were measured and compared between the two groups. RESULTS: We found that 27 (29.3%), 16 (17.4%), and 27 (29.3%) of 92 GPCA+/DG+/EOLP patients had hemoglobin (men < 13 g/dL and women < 12 g/dL), iron (< 60 µg/dL), and vitamin B12 (< 200 pg/mL) deficiencies, respectively. Moreover, 37 (40.2%) of 92 GPCA+/DG+/EOLP patients had an abnormally high blood homocysteine level (> 12.1µM). GPCA+/DG+/EOLP patients had a significantly higher frequency of hemoglobin, iron, or vitamin B12 deficiency and an abnormally high blood homocysteine level than healthy control individuals (all p < 0.001). Of 27 anemic GPCA+/DG+/EOLP patients, 13 (48.2%) had pernicious anemia, five (18.5%) had iron deficiency anemia, one (3.7%) had thalassemia trait, and the remaining eight (29.6%) had normocytic anemia. Moreover, of the 92 GPCA+/DG+/EOLP patients, 24 had macrocytosis, and only 13 (54.2%) of these 24 patients had pernicious anemia. CONCLUSION: We conclude that GPCA+/DG+/EOLP patients may have vitamin B12 deficiency, iron deficiency, and an abnormally high blood homocysteine level. In addition to pernicious anemia, GPCA+/DG+/EOLP patients may sometimes have normocytic anemia or iron deficiency anemia.


Asunto(s)
Anemia/sangre , Autoanticuerpos/sangre , Gingivitis/sangre , Homocisteína/sangre , Liquen Plano Oral/sangre , Células Parietales Gástricas/inmunología , Adulto , Anciano , Anciano de 80 o más Años , Anemia/clasificación , Estudios de Casos y Controles , Índices de Eritrocitos , Femenino , Ácido Fólico/sangre , Hemoglobinas/análisis , Humanos , Hierro/sangre , Masculino , Persona de Mediana Edad , Taiwán , Vitamina B 12/sangre , Deficiencia de Vitamina B 12/sangre
6.
N Engl J Med ; 365(26): 2453-62, 2011 Dec 29.
Artículo en Inglés | MEDLINE | ID: mdl-22168590

RESUMEN

BACKGROUND: The hemoglobin threshold at which postoperative red-cell transfusion is warranted is controversial. We conducted a randomized trial to determine whether a higher threshold for blood transfusion would improve recovery in patients who had undergone surgery for hip fracture. METHODS: We enrolled 2016 patients who were 50 years of age or older, who had either a history of or risk factors for cardiovascular disease, and whose hemoglobin level was below 10 g per deciliter after hip-fracture surgery. We randomly assigned patients to a liberal transfusion strategy (a hemoglobin threshold of 10 g per deciliter) or a restrictive transfusion strategy (symptoms of anemia or at physician discretion for a hemoglobin level of <8 g per deciliter). The primary outcome was death or an inability to walk across a room without human assistance on 60-day follow-up. RESULTS: A median of 2 units of red cells were transfused in the liberal-strategy group and none in the restrictive-strategy group. The rates of the primary outcome were 35.2% in the liberal-strategy group and 34.7% in the restrictive-strategy group (odds ratio in the liberal-strategy group, 1.01; 95% confidence interval [CI], 0.84 to 1.22), for an absolute risk difference of 0.5 percentage points (95% CI, -3.7 to 4.7). The rates of in-hospital acute coronary syndrome or death were 4.3% and 5.2%, respectively (absolute risk difference, -0.9%; 99% CI, -3.3 to 1.6), and rates of death on 60-day follow-up were 7.6% and 6.6%, respectively (absolute risk difference, 1.0%; 99% CI, -1.9 to 4.0). The rates of other complications were similar in the two groups. CONCLUSIONS: A liberal transfusion strategy, as compared with a restrictive strategy, did not reduce rates of death or inability to walk independently on 60-day follow-up or reduce in-hospital morbidity in elderly patients at high cardiovascular risk. (Funded by the National Heart, Lung, and Blood Institute; FOCUS ClinicalTrials.gov number, NCT00071032.).


Asunto(s)
Transfusión de Eritrocitos , Fracturas de Cadera/cirugía , Anciano , Anciano de 80 o más Años , Anemia/clasificación , Anemia/terapia , Transfusión Sanguínea/estadística & datos numéricos , Femenino , Estudios de Seguimiento , Hemoglobinas , Humanos , Masculino , Persona de Mediana Edad , Mortalidad , Complicaciones Posoperatorias , Factores de Riesgo , Resultado del Tratamiento , Infección de Heridas
8.
Am J Hematol ; 88(1): 5-9, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23044913

RESUMEN

While anemia is associated with poor functional and mortality outcomes in the elderly, the impact of hemoglobin decline is less studied. We evaluated the determinants and consequences of hemoglobin decline in 3,758 non-anemic participants from the Cardiovascular Health Study, a prospective cohort of community-dwelling elderly ≥65 years old at baseline and followed for up to 16 years. Hemoglobin was measured at baseline and 3 years later and anemia defined by World Health Organization (WHO) criteria. We modeled hemoglobin decline in two ways: (1) per each 1 g/dL decrease in hemoglobin and (2) development of anemia by the WHO criteria. Among participants without baseline anemia, hemoglobin decreased by 0.4 g/dL and 9% developed anemia over 3 years. Baseline increasing age, female sex, diabetes, and kidney disease predicted hemoglobin decline over 3 years. Baseline increasing age, being African-American, and kidney disease predicted anemia development over 3 years. Hemoglobin decline was associated with subsequent worse cognitive function in men and anemia development with subsequent worse cognitive function in women. Both anemia development (HR 1.39, 95% CI 1.15, 1.69) and hemoglobin decline (HR 1.11, 95% CI 1.04, 1.18 per 1 g/dL decrease) predicted subsequent mortality in men and women. Hemoglobin decreases identified a large group of elderly individuals at risk for subsequent adverse outcomes who would not be identified using the WHO anemia criteria. These data may allow clinicians to identify at-risk elderly individuals for early intervention to improve the quality and quantity of life.


Asunto(s)
Anemia/sangre , Anemia/mortalidad , Hemoglobinas/metabolismo , Negro o Afroamericano , Factores de Edad , Anciano , Anciano de 80 o más Años , Anemia/clasificación , Anemia/etiología , Complicaciones de la Diabetes/sangre , Complicaciones de la Diabetes/mortalidad , Femenino , Estudios de Seguimiento , Humanos , Enfermedades Renales/sangre , Enfermedades Renales/mortalidad , Masculino , Estudios Prospectivos , Calidad de Vida , Factores de Riesgo , Factores Sexuales , Tasa de Supervivencia , Factores de Tiempo , Organización Mundial de la Salud
9.
Proc Natl Acad Sci U S A ; 107(47): 20587-92, 2010 Nov 23.
Artículo en Inglés | MEDLINE | ID: mdl-21059904

RESUMEN

The systems controlling the number, size, and hemoglobin concentrations of populations of human red blood cells (RBCs), and their dysregulation in anemia, are poorly understood. After release from the bone marrow, RBCs undergo reduction in both volume and total hemoglobin content by an unknown mechanism [Lew VL, et al. (1995) Blood 86:334-341; Waugh RE, et al. (1992) Blood 79:1351-1358]; after ∼120 d, responding to an unknown trigger, they are removed. We used theory from statistical physics and data from the hospital clinical laboratory [d'Onofrio G, et al. (1995) Blood 85:818-823] to develop a master equation model for RBC maturation and clearance. The model accurately identifies patients with anemia and distinguishes thalassemia-trait anemia from iron-deficiency anemia. Strikingly, it also identifies many pre-anemic patients several weeks before anemia becomes clinically detectable. More generally we illustrate how clinical laboratory data can be used to develop and to test a dynamic model of human pathophysiology with potential clinical utility.


Asunto(s)
Anemia/sangre , Anemia/fisiopatología , Eritrocitos/patología , Eritrocitos/fisiología , Modelos Biológicos , Anemia/clasificación , Anemia/diagnóstico , Recuento de Eritrocitos , Hemoglobinas/análisis , Humanos
10.
Curr Opin Hematol ; 19(3): 133-40, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22495692

RESUMEN

PURPOSE OF REVIEW: There have been several large-scale epidemiologic studies, including the National Health and Nutrition Examination Survey III (NHANES III), which have described the prevalence and impact of anemia in the elderly. The information derived has been critically important. However, given the large number of patients surveyed, these reports necessarily relied substantially on the laboratory-based screening evaluations. There are now two recent reports describing the cause of anemia in elderly outpatients, and although the numbers are smaller than the large scale surveys, they constitute comprehensive hematologic evaluations with therapeutic interventions and clinical follow-up. The purpose of this review is to compare these different analyses. RECENT FINDINGS: There are distinct differences and similarities in the two types of studies, which are derived from patients seen in hematology clinics. Despite comprehensive hematologic evaluation, the puzzling entity of unexplained anemia of the elderly is confirmed and found to account for 30-46% of patients. NHANES III classified iron-deficiency anemia with other nutritional anemias, a classification that might be correct in the developing third world, but in North America and Western Europe, iron deficiency is more often caused by blood loss and the cause must be sought and dealt with. The myelodysplastic syndromes are an important cause of anemia in the elderly, with a prevalence of at least 4%. SUMMARY: Large-scale screening studies of anemia in the elderly are of great importance, and when complemented by comprehensive hematologic evaluations, provide a more accurate picture of the clinical situation.


Asunto(s)
Anemia/etiología , Encuestas Epidemiológicas/métodos , Hierro/sangre , Anciano , Anciano de 80 o más Años , Anemia/clasificación , Anemia/diagnóstico , Recuento de Células Sanguíneas , Ácido Fólico/sangre , Hemoglobinas/análisis , Humanos , Deficiencias de Hierro , Hierro de la Dieta , Síndromes Mielodisplásicos/diagnóstico , Evaluación Nutricional , Pacientes Ambulatorios , Vitamina B 12/sangre
11.
Klin Lab Diagn ; (7): 45-8, 2013 Jul.
Artículo en Ruso | MEDLINE | ID: mdl-24341191

RESUMEN

The homeostasis of basic microelements (Fe, Cu and Zn) is ultimately important for normal functioning of organism. The article presents the data concerning the detection of these metals both in blood serum and urine of patients with anemia of different etiology. The indicators of excretion can provide additional information for diagnostics and needed therapy. The article describes in details simple colorimetric methods of detection of mentioned metals in urine. It is demonstrated that under anemia the positive balance of cuprum is noted. This occurrence can be a possible cause of coagulation complications.


Asunto(s)
Anemia/diagnóstico , Análisis Químico de la Sangre , Cobre/orina , Hierro/orina , Zinc/orina , Anemia/sangre , Anemia/clasificación , Anemia/orina , Colorimetría , Cobre/sangre , Diagnóstico Diferencial , Homeostasis , Humanos , Hierro/sangre , Zinc/sangre
12.
FP Essent ; 530: 7-11, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37390395

RESUMEN

Anemia is a common condition encountered in inpatient and outpatient primary care settings. When anemia is detected, it is essential to investigate the cause to provide appropriate treatment. Patients may present with symptomatic anemia (eg, fatigue, weakness, shortness of breath), or anemia may be an incidental finding on laboratory evaluation. Initial evaluation consists of a thorough history and physical examination and a complete blood cell count (CBC). Careful examination of the CBC and the mean corpuscular volume provides important clues to the classification and cause of anemia. Supplemental tests may include a peripheral blood smear; reticulocyte count; iron panel (ie, ferritin and iron levels, total iron-binding capacity, transferrin saturation); and levels of vitamin B12, folate, lactate dehydrogenase, haptoglobin, and bilirubin.


Asunto(s)
Anemia , Humanos , Anemia/sangre , Anemia/clasificación , Anemia/diagnóstico , Recuento de Células Sanguíneas , Índices de Eritrocitos , Análisis Químico de la Sangre , Examen Físico
13.
Rev Panam Salud Publica ; 31(1): 68-73, 2012 Jan.
Artículo en Español | MEDLINE | ID: mdl-22427167

RESUMEN

OBJECTIVES: Compare the nutritional origin of anemia by sociodemographic variables and analyze its association with deficient hematopoietic nutrient intake. METHODS: The database of Colombia's 2005 National Survey of Nutritional Status was used. The data were obtained through complex representative sampling of the population and processed using SPSS v.15. Anemic women of childbearing age were selected and divided into two groups according to serum ferritin levels. Their customary hematopoietic nutrient intake and risk of deficiency were determined. The proportions of anemia types were compared by sociodemographic variables using the F-distribution, the Rao-Scott second order correction (P < 0.05). The association between the origin of the anemia and classification of the nutrient was analyzed using the odds ratio (OR). SAMPLE: 595 women. Non-hypoferric anemia (67.2%) predominated, with no statistical difference by sociodemographic variable, except in the Pacific region (hypoferric anemia, 52.1%). The prevalence of deficiency in the customary intake of hematopoietic nutrients was high. There was no significant association between the deficit in consumption and the origin of the anemia. CONCLUSIONS: Non-hypoferric anemia was most common, with no difference by sociodemographic indicators except in the Pacific region. All the women were at high risk of deficiency in their customary hematopoietic nutrient intake, but a statistically significant association between the deficiency and the origin of the nutritional anemia was not observed. Programs to improve nutrient intake and a continued search for causes of nutritional anemia other than iron deficiency are justified.


Asunto(s)
Anemia/epidemiología , Dieta , Desnutrición/complicaciones , Adolescente , Adulto , Anemia/sangre , Anemia/clasificación , Anemia/etiología , Anemia Ferropénica/epidemiología , Anemia Ferropénica/etiología , Avitaminosis/complicaciones , Avitaminosis/epidemiología , Proteína C-Reactiva/análisis , Colombia/epidemiología , Registros de Dieta , Femenino , Ferritinas/sangre , Hemoglobinas/análisis , Humanos , Hierro de la Dieta , Persona de Mediana Edad , Valor Nutritivo , Factores Socioeconómicos , Adulto Joven
14.
Ginecol Obstet Mex ; 80(9): 563-80, 2012 Sep.
Artículo en Español | MEDLINE | ID: mdl-23243836

RESUMEN

BACKGROUND: According to data from the World Health Organization and UNICEF from year 2009, iron deficiency is the most widespread nutritional deficiency worldwide. This deficiency causes an imbalance between needs and iron supply, which consequently results in anemia. Around the world, two million people suffer from anemia, half of which is due to iron deficiency. The most impacted groups are children and teenagers, due to their highest requirements derived from the growing process, and women in their reproductive age, due to their loss of iron derived from menstruating or to their highest iron needs during pregnancy. This increase in needs is not satisfied by the regular diet, since it includes an insufficient amount and/or low bioavailability of iron. PURPOSE: To share with the medical community treating pregnant women the experience of an expert group so that they always bear in mind the repercussions caused by anemia during pregnancy, know more about the diagnostic possibilities and have a reference point for prescribing iron supplements. METHOD: The consensus method was used through the expert panel group technique. Two rounds were taken for structuring the clinical questions. The first one was to facilitate working groups their focusing in the clinical topics and the population of interest; the second one was to aid in posing specific questions observing the Patient, Intervention, Compare and Outcome (PICO) structure. The primary and clinical secondary study variables were defined by the working groups from the previously developed questions and during the face-to-face working period, according to the natural history of the disease: risk factors, diagnostic classification, (either pharmacological or non pharmacological) treatment and prognosis. The level of evidence and clinical recommendation was classified based on the Evidence Classification Level and Clinical Recommendation of the Medicine Group based on Evidence from Oxford University. RESULTS: In Mexico, 20.6% of pregnant women suffer from anemia, especially those between 15 and 16 years old, who prevail in 42.4% and 34.3% percent, respectively. Almost half the cases are due to iron deficiency. This type of anemia is associated with a higher risk of pre-term delivery, of low birth weight and perinatal death. The first assessment of an anemic pregnant woman shall include the medical history, a physical examination and the quantification of the erythrocyte indices, serum concentrations of iron and ferritin. The measurement of this last one has the highest sensitivity and specificity for diagnosing iron deficiency. Daily oral iron supplementation, at a 60-to-120 mg dosage, may correct most of mild-to-moderate anemias. The most appropriate treatment is with iron salts (iron sulfate, polimaltose iron complex or iron fumarate). In case of intolerance to iron sulfate or fumarate, polimaltose iron is a better tolerated option. Treatment shall be administered until the hemoglobin values are > 10.5 g and ferritin is between 300 and 360 microg/dL, and such levels shall be observed for at least one year. Parenteral administration is an alternative for patients with a severe intolerance to oral administration; even when the possibility of anaphylaxis shall be considered it is lower when using ferrous sacarate. Transfusion is reserved for patients with hemoglobin lower than 7 g/dL or having an imminent cardio-respiratory decompensation. CONCLUSIONS: Iron deficiency is the highest prevailing nutritional deficiency worldwide and its consequences during pregnancy may be highly risky for both the mother and her child. Anemia diagnosis may easily be achieved through a blood analysis including the serum ferritin determination. Serum iron measurement shall not be used as the only marker to set the diagnosis. It is important to rule out other causes, in addition to the deficiencies, which produce anemia in a patient. It is essential to suggest the administration of iron supplements not only during the antenatal period but also after birth o even after a miscarriage to fulfill the need for depleted iron. In severe anemias (hemoglobin being lower than 9.0 g/L), iron doses higher than 120 mg a day may be required. Treatment shall always begin orally, and if this is not well tolerated, parenteral administration shall be used.


Asunto(s)
Anemia/diagnóstico , Anemia/tratamiento farmacológico , Complicaciones Hematológicas del Embarazo/diagnóstico , Complicaciones Hematológicas del Embarazo/tratamiento farmacológico , Adolescente , Adulto , Anemia/clasificación , Anemia/epidemiología , Anemia/etiología , Anemia/terapia , Anemia Ferropénica/diagnóstico , Anemia Ferropénica/tratamiento farmacológico , Anemia Ferropénica/epidemiología , Anemia Ferropénica/etiología , Anemia Ferropénica/terapia , Biomarcadores , Transfusión Sanguínea , Medicina Basada en la Evidencia , Femenino , Ferritinas/sangre , Muerte Fetal/etiología , Enfermedades Fetales/etiología , Enfermedades Fetales/prevención & control , Ácido Fólico/administración & dosificación , Ácido Fólico/uso terapéutico , Salud Global , Hemoglobinas/análisis , Humanos , Recién Nacido , Hierro/administración & dosificación , Hierro/efectos adversos , Hierro/sangre , Hierro/uso terapéutico , Hierro de la Dieta/farmacocinética , México/epidemiología , Persona de Mediana Edad , Atención Posnatal/métodos , Atención Posnatal/normas , Embarazo , Complicaciones Hematológicas del Embarazo/clasificación , Complicaciones Hematológicas del Embarazo/epidemiología , Complicaciones Hematológicas del Embarazo/etiología , Complicaciones Hematológicas del Embarazo/terapia , Atención Prenatal/métodos , Atención Prenatal/normas , Prevalencia , Factores de Riesgo , Sensibilidad y Especificidad , Índice de Severidad de la Enfermedad , Adulto Joven
15.
N Engl J Med ; 358(9): 888-99, 2008 Feb 28.
Artículo en Inglés | MEDLINE | ID: mdl-18305266

RESUMEN

BACKGROUND: Severe anemia is a major cause of sickness and death in African children, yet the causes of anemia in this population have been inadequately studied. METHODS: We conducted a case-control study of 381 preschool children with severe anemia (hemoglobin concentration, <5.0 g per deciliter) and 757 preschool children without severe anemia in urban and rural settings in Malawi. Causal factors previously associated with severe anemia were studied. The data were examined by multivariate analysis and structural equation modeling. RESULTS: Bacteremia (adjusted odds ratio, 5.3; 95% confidence interval [CI], 2.6 to 10.9), malaria (adjusted odds ratio, 2.3; 95% CI, 1.6 to 3.3), hookworm (adjusted odds ratio, 4.8; 95% CI, 2.0 to 11.8), human immunodeficiency virus infection (adjusted odds ratio, 2.0; 95% CI, 1.0 to 3.8), the G6PD(-202/-376) genetic disorder (adjusted odds ratio, 2.4; 95% CI, 1.3 to 4.4), vitamin A deficiency (adjusted odds ratio, 2.8; 95% CI, 1.3 to 5.8), and vitamin B12 deficiency (adjusted odds ratio, 2.2; 95% CI, 1.4 to 3.6) were associated with severe anemia. Folate deficiency, sickle cell disease, and laboratory signs of an abnormal inflammatory response were uncommon. Iron deficiency was not prevalent in case patients (adjusted odds ratio, 0.37; 95% CI, 0.22 to 0.60) and was negatively associated with bacteremia. Malaria was associated with severe anemia in the urban site (with seasonal transmission) but not in the rural site (where malaria was holoendemic). Seventy-six percent of hookworm infections were found in children under 2 years of age. CONCLUSIONS: There are multiple causes of severe anemia in Malawian preschool children, but folate and iron deficiencies are not prominent among them. Even in the presence of malaria parasites, additional or alternative causes of severe anemia should be considered.


Asunto(s)
Anemia/etiología , Anemia/clasificación , Anemia/epidemiología , Anemia/genética , Anemia Ferropénica/epidemiología , Bacteriemia/complicaciones , Bacteriemia/epidemiología , Estudios de Casos y Controles , Causalidad , Preescolar , Femenino , Glucosafosfato Deshidrogenasa/genética , Infecciones por VIH/complicaciones , Infecciones por VIH/epidemiología , Infecciones por Uncinaria/complicaciones , Infecciones por Uncinaria/epidemiología , Humanos , Lactante , Malaria/complicaciones , Malaria/epidemiología , Malaui/epidemiología , Masculino , Análisis Multivariante , Trastornos Nutricionales/complicaciones , Trastornos Nutricionales/epidemiología , Oportunidad Relativa , Índice de Severidad de la Enfermedad
16.
Ther Umsch ; 67(5): 213-8, 2010 May.
Artículo en Alemán | MEDLINE | ID: mdl-20509116

RESUMEN

Anemia is a common manifestation, and has to be considered more often as a symptom of an underlying, acquired or hereditary disease, rather than a disease by itself. The different causes of anemia cover almost the whole spectrum of human diseases. Often the question arises, if anemia is symptom of an already known disease or if other reasons should be investigated. We will present in this paper general considerations of the assessment of anemia and the differential diagnosis, and focus on a possible initial approach to the patient with anemia.


Asunto(s)
Anemia/clasificación , Anemia/diagnóstico , Anemia/etiología , Diagnóstico Diferencial , Humanos
17.
Pediatr Ann ; 49(1): e10-e16, 2020 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-31930418

RESUMEN

Anemia may be defined as a reduction in red blood cell mass or blood hemoglobin concentration. Physiologically, this represents a hemoglobin level that is too low to meet cellular oxygen demands. Practically, the lower limit of normal is set at 2 standard deviations below the mean based on age, gender, and ethnicity/race. Anemia can lead to impaired growth, development, and poor neurocognitive outcome. As such, it is essential for pediatricians to recognize and conduct appropriate testing for a child with anemia. [Pediatr Ann. 2020;49(1):e10-e16.].


Asunto(s)
Anemia/clasificación , Anemia/diagnóstico , Niño , Humanos , Pediatras
18.
Hematology Am Soc Hematol Educ Program ; 2020(1): 465-470, 2020 12 04.
Artículo en Inglés | MEDLINE | ID: mdl-33275715

RESUMEN

Inherited microcytic anemias can be broadly classified into 3 subgroups: (1) defects in globin chains (hemoglobinopathies or thalassemias), (2) defects in heme synthesis, and (3) defects in iron availability or iron acquisition by the erythroid precursors. These conditions are characterized by a decreased availability of hemoglobin (Hb) components (globins, iron, and heme) that in turn causes a reduced Hb content in red cell precursors with subsequent delayed erythroid differentiation. Iron metabolism alterations remain central to the diagnosis of microcytic anemia, and, in general, the iron status has to be evaluated in cases of microcytosis. Besides the very common microcytic anemia due to acquired iron deficiency, a range of hereditary abnormalities that result in actual or functional iron deficiency are now being recognized. Atransferrinemia, DMT1 deficiency, ferroportin disease, and iron-refractory iron deficiency anemia are hereditary disorders due to iron metabolism abnormalities, some of which are associated with iron overload. Because causes of microcytosis other than iron deficiency should be considered, it is important to evaluate several other red blood cell and iron parameters in patients with a reduced mean corpuscular volume (MCV), including mean corpuscular hemoglobin, red blood cell distribution width, reticulocyte hemoglobin content, serum iron and serum ferritin levels, total iron-binding capacity, transferrin saturation, hemoglobin electrophoresis, and sometimes reticulocyte count. From the epidemiological perspective, hemoglobinopathies/thalassemias are the most common forms of hereditary microcytic anemia, ranging from inconsequential changes in MCV to severe anemia syndromes.


Asunto(s)
Anemia , Hierro/metabolismo , Errores Innatos del Metabolismo de los Metales , Anemia/clasificación , Anemia/genética , Anemia/metabolismo , Anemia/patología , Humanos , Errores Innatos del Metabolismo de los Metales/clasificación , Errores Innatos del Metabolismo de los Metales/genética , Errores Innatos del Metabolismo de los Metales/metabolismo , Errores Innatos del Metabolismo de los Metales/patología
19.
Pediatr Hematol Oncol ; 26(2): 69-84, 2009 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-19322737

RESUMEN

BACKGROUND: Despite the high prevalence of altered iron metabolism in children with human immunodeficiency virus (HIV) disease, these alterations have not been well studied. PROCEDURES: Twenty-six children with HIV disease underwent laboratory evaluation to determine the presence of anemia, and to classify the anemia as iron-deficiency anemia or anemia of chronic disease. RESULTS: Half of the children had an alteration in iron metabolism: 6 were iron deficient, 4 had hyperferritinemia, and 3 demonstrated hyperferritinemia with iron deficiency. CONCLUSIONS: These data indicate that alterations in iron metabolism are common even in the HAART era and warrant further study to identify individuals at risk for these alterations.


Asunto(s)
Anemia/diagnóstico , Infecciones por VIH/metabolismo , Hierro/metabolismo , Adolescente , Anemia/clasificación , Anemia Ferropénica/diagnóstico , Niño , Preescolar , Femenino , Ferritinas/sangre , Infecciones por VIH/complicaciones , Infecciones por VIH/epidemiología , Humanos , Lactante , Masculino , Prevalencia
20.
Kardiologiia ; 49(4): 37-9, 2009.
Artículo en Ruso | MEDLINE | ID: mdl-19463116

RESUMEN

We carried out retrospective analysis of 219 case histories of patients with chronic heart failure admitted to a general medical hospital. Anemia (hemoglobin level below 130 g/l in men and below 120g/l in women) was found in 23.3% of cases. Anemia was classified as iron deficiency in 23.5% and as B12 deficiency in 3.9% of patients. In 3.9% of patients other definite causes of anemia were found and in 68.6% origin of anemia was not determined. However at least in some of the latter patients disturbed kidney function could play some role in anemia genesis.


Asunto(s)
Anemia/clasificación , Anemia/epidemiología , Insuficiencia Cardíaca/complicaciones , Hospitales Generales/estadística & datos numéricos , Adulto , Anciano , Anciano de 80 o más Años , Anemia/etiología , Femenino , Insuficiencia Cardíaca/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , Estudios Retrospectivos , Federación de Rusia/epidemiología , Adulto Joven
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