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Anaemia in children: Part I. Can simple observations by primary care provider help in diagnosis?
1Baqai Institute of Health Sciences, Baqai University, Karachi.
Insights
Simple clinical signs can effectively screen for childhood anemia in resource-limited areas. Combining conjunctival and nail pallor offers a valid, non-invasive method for anemia detection.
Area of Science:
- Pediatrics
- Public Health
- Hematology
Background:
- Anemia diagnosis commonly relies on invasive hemoglobin level testing.
- There is a need for accessible, non-invasive diagnostic methods, especially in primary healthcare settings.
- Childhood anemia remains a significant global health concern.
Purpose of the Study:
- To evaluate the validity of simple, non-invasive clinical techniques for diagnosing anemia in children.
- To compare the diagnostic accuracy of various clinical signs and their combinations against hemoglobin levels.
Main Methods:
- A cross-sectional study involving 951 children aged 6-60 months in Karachi.
- Children were initially assessed using a clinical scoring system for anemia.
- Hemoglobin levels were measured using the Hemocue finger prick method for comparison.
Main Results:
- Anemia prevalence was 78% by Hemocue and 68% by clinical examination.
- Conjunctival pallor showed high sensitivity (74%), while nail pallor demonstrated high specificity (96%).
- Combinations of conjunctival pallor with nail, palm, or tongue pallor provided the highest diagnostic validity.
Conclusions:
- Non-invasive clinical assessments, particularly conjunctival pallor combined with other signs, are valid for detecting anemia in settings lacking laboratory facilities.
- This approach can aid in early anemia detection and management in primary healthcare contexts.
- Clinical examination offers a practical alternative for anemia screening in underserved populations.
Abstract:
The commonest and reliable method of diagnosing anaemia is by determining haemoglobin levels, which is an invasive technique. This cross-sectional study aims to detect the validity of diagnosing anaemia by simple non-invasive clinical techniques. This study screened 951 children (6-60 months) residing in a squatter settlement of Karachi. Every child was first labelled anaemic or normal by a clinical scoring system and then his/her haemoglobin was tested by finger prick method on a Hemocue. Mean age was 31.1 +/- 15.3 months (n = 945) and median was 32 months. The prevalence of anaemia by Hemocue was 78% (Anaemia = Hb < 11 gms%) and by clinical examinations 68%. Conjunctivae alone had the highest sensitivity (74%) and nails alone highest specificity (96%). Nails alone had the highest positive predictive value and conjunctivae alone highest negative predictive value (43.2%). Combinations of conjunctivae with either nails, palm or tongue yielded the highest validity. The results indicate that in PHC settings with no laboratory facilities, anaemia can be detected by pallor of conjunctivae associated with pallor of either nails, palm or tongue.