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Using clinical signs to diagnose anaemia in African children
S P Luby1, P N Kazembe, S C Redd
1Epidemiology Branch, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA.
Insights
Clinical findings can help identify anemia in young children in sub-Saharan Africa. Health workers can use visible signs like pallor to detect the majority of anemia cases, even without lab tests.
Area of Science:
- Pediatrics
- Hematology
- Public Health
Background:
- Anemia is a widespread and critical health issue affecting young children in sub-Saharan Africa.
- Accurate and accessible diagnostic methods are crucial for effective anemia management in resource-limited settings.
Purpose of the Study:
- To assess the capability of healthcare workers in diagnosing childhood anemia using clinical indicators.
- To evaluate the sensitivity and specificity of clinical findings for identifying moderate and severe anemia in children under five.
Main Methods:
- A study involving 1104 children under five years old was conducted at two rural Malawian clinics.
- Healthcare workers examined children, and blood samples were analyzed to determine hemoglobin levels.
- Clinical signs, including conjunctival, tongue, palm, and nail bed pallor, were recorded.
Main Results:
- Pallor showed 66% sensitivity and 68% specificity for moderate anemia (hemoglobin 5-8 g/dl).
- Pallor demonstrated 93% sensitivity and 57% specificity for severe anemia (hemoglobin < 5 g/dl).
- Clinical findings effectively identified most children with anemia.
Conclusions:
- Clinical examination is a valuable tool for detecting anemia in young children, particularly in areas lacking laboratory facilities.
- Healthcare workers can utilize observable signs to identify a significant proportion of anemic children, aiding in timely intervention.
- The study supports the use of clinical assessment as a primary screening method for childhood anemia in rural sub-Saharan Africa.
Abstract:
Anaemia is a serious and common problem among young children in sub-Saharan Africa. As a first step towards developing guidelines for its recognition and treatment, we conducted a study to evaluate the ability of health workers to use clinical findings to identify children with anaemia. Health care workers examined a total of 1104 children under 5 years of age at two hospital-based outpatient clinics in rural Malawi. Blood samples were taken to determine haemoglobin concentrations. Pallor of the conjunctiva, tongue, palm or nail beds was 66% sensitive and 68% specific in distinguishing children with moderate a anaemia (haemoglobin concentration, 5-8 g/dl) and 93% sensitive and 57% specific in distinguishing those with severe anaemia (haemoglobin concentration, < 5 g/dl). Even without laboratory support, which is often unavailable in rural Africa, clinical findings can identify the majority of children with anaemia.