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Anemia of acute inflammation in children
Insights
Most children hospitalized with acute inflammation experience a drop in hemoglobin (Hgb). This anemia typically resolves on its own within a week of illness onset, without needing specific treatment.
Area of Science:
- Pediatrics
- Hematology
- Clinical Medicine
Background:
- Anemia of inflammation is common in hospitalized children.
- Sequential changes in hemoglobin (Hgb) and erythrocyte sedimentation rate (ESR) are key indicators of inflammatory processes.
Purpose of the Study:
- To investigate the sequential changes in hemoglobin concentration during acute inflammatory conditions in children.
- To determine the incidence and pattern of anemia in children hospitalized for inflammation.
Main Methods:
- Retrospective and prospective study of 27 previously healthy children.
- Measurement of hemoglobin (Hgb) and erythrocyte sedimentation rate (ESR) during hospitalization and recovery.
Main Results:
- 61% of children showed mild anemia on admission; 83% experienced a significant Hgb drop (>2 SD) during active inflammation.
- A mean Hgb drop of 1.8 gm/dl occurred within 5.6 days, with an average non-iatrogenic blood loss of 107 ml in prospectively studied children.
- Combined studies showed a 13% Hgb drop during inflammation followed by a 24% Hgb rise during resolution.
Conclusions:
- Children with moderately severe acute inflammation commonly experience a significant Hgb drop within one week of illness onset.
- This mild to moderate anemia generally resolves spontaneously without requiring hematinic therapy.
Abstract:
We measured sequential changes in hemoglobin concentration and erythrocyte sedimentation rate in 27 previously healthy children hospitalized for a variety of moderately severe acute inflammatory processes. Among 18 retrospectively studied children, 61% had mild anemia for age on admission, and Hgb values dropped greater than 2 SD in 83% during active inflammation. During recovery, Hgb concentrations spontaneously rose greater than 1.3 gm/dl in 79% of the children. Mean Hgb drop was 1.8 gm/dl in 5.6 days, representing an average noniatrogenic blood loss of 107 ml, among nine prospectively studied children. Only one of these had laboratory evidence of hemolysis, and none had clinical evidence of bleeding or overhydration. Results of both studies combined showed that a mean 13% Hgb drop during active inflammation was followed by a mean 24% Hgb rise during resolution of acute inflammation. We conclude that most children with moderately severe acute inflammation experience a significant drop in Hgb within 1 week of illness onset, regardless of the specific cause of inflammation. In general, this mild to moderate anemia resolves without hematinic therapy.