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Glucose-6-phosphate dehydrogenase deficiency & neonatal hyperbilirubinaemia
Insights
Neonatal hyperbilirubinaemia is strongly linked to glucose-6-phosphate dehydrogenase (G6PD) deficiency. This study found a significantly higher incidence of G6PD deficiency in jaundiced newborns compared to controls.
Area of Science:
- Neonatal Medicine
- Clinical Biochemistry
- Genetics
Background:
- Neonatal hyperbilirubinaemia is a common clinical condition.
- Glucose-6-phosphate dehydrogenase (G6PD) deficiency is a known genetic disorder affecting red blood cells.
- The relationship between G6PD deficiency and neonatal jaundice requires further investigation.
Purpose of the Study:
- To investigate the incidence and impact of G6PD deficiency in neonates with hyperbilirubinaemia.
- To compare G6PD levels and deficiency rates between jaundiced and non-jaundiced neonates.
- To evaluate the effectiveness of common screening tests for G6PD deficiency in this population.
Main Methods:
- Studied 74 neonates with hyperbilirubinaemia and 47 controls.
- Utilized spectrophotometric assays for G6PD level determination.
- Employed three screening tests: ascorbate cyanide test, methaemoglobin reduction test, and fluorescent spot test.
Main Results:
- G6PD deficiency was significantly more prevalent in hyperbilirubinaemic neonates (35.1%) versus controls (6.4%) (P < 0.001).
- G6PD levels were significantly lower in hyperbilirubinaemic neonates (P < 0.05).
- Screening tests showed limitations, failing to detect 37.9% of neonates with mild G6PD deficiency.
Conclusions:
- G6PD deficiency is a significant risk factor for neonatal hyperbilirubinaemia.
- Spectrophotometric assays are more reliable than screening tests for detecting G6PD deficiency in neonates.
- Early detection and management of G6PD deficiency are crucial in preventing severe neonatal jaundice.
Abstract:
Seventy four neonates with hyperbilirubinaemia and 47 non-jaundiced (control) neonates were studied for evidence of G6PD deficiency by spectrophotometric assays and 3 screening tests viz., ascorbate cyanide test, methaemoglobin reduction test and fluorescent spot test. The incidence of G6PD deficiency was significantly higher (P less than 0.001) in the hyperbilirubinaemic neonates (35.1%) as compared to non-jaundiced neonates (6.4%). The G6PD levels in the hyperbilirubinaemic neonates were significantly lower than in the non-jaundiced neonates (P less than 0.05). In 9(12.2%) hyperbilirubinaemic neonates G6PD deficiency was present, without evidence of any other factor known to cause hyperbilirubinaemia. Results of screening tests were essentially similar. However, even with all the screening tests, 11 of 29 neonates (37.9%) with mild G6PD deficiency were not detected showing the limitation of these tests.