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The effect of lumbar puncture procedure on blood glucose level and leukocyte count in infants
Insights
Lumbar puncture (LP) in infants may temporarily increase white blood cell (WBC) counts, potentially affecting meningitis diagnosis. However, it does not impact blood glucose measurements needed for cerebrospinal fluid analysis.
Area of Science:
- Pediatrics
- Clinical Chemistry
- Hematology
Background:
- Lumbar puncture (LP) is a common diagnostic procedure for suspected meningitis in infants.
- Changes in peripheral blood parameters following LP can impact diagnostic accuracy.
- Accurate assessment of blood glucose is crucial for interpreting cerebrospinal fluid glucose levels.
Purpose of the Study:
- To evaluate the effect of lumbar puncture (LP) on blood glucose levels and white blood cell (WBC) counts in infants.
- To determine if LP influences the accuracy of cerebrospinal fluid glucose measurements.
- To assess potential alterations in peripheral WBC counts post-LP.
Main Methods:
- Blood samples were collected from 26 infants before and 10-15 minutes after LP.
- Blood glucose, urea concentration, and total WBC count were analyzed.
- Statistical analysis was performed to compare pre- and post-LP values.
Main Results:
- A significant increase (p < 0.001) in peripheral WBC count was observed post-LP (mean 13,300 cells/µL vs. 10,960 cells/µL).
- The rise in WBC count was attributed to increased neutrophils and lymphocytes.
- No significant change in blood glucose levels was detected following the LP procedure.
Conclusions:
- Lumbar puncture may cause a transient elevation in peripheral WBC count in infants.
- LP does not interfere with the accuracy of blood glucose measurements used for CSF analysis.
- The findings suggest careful interpretation of WBC counts in infants undergoing LP for meningitis workup.
Abstract:
Blood glucose level, urea concentration, and total white blood cell count were determined both before and 10-15 minutes after lumbar puncture (LP) procedure in 26 infants suspected of having meningitis. There was a significant (p less than 0.001) increase in the peripheral white blood cell (WBC) count (mean +/- standard deviation) from 10,960 +/- 3,500 cells/microliter before to 13,300 +/- 3,970 cells/microliter following the LP procedure, due to relative rise in the neutrophils and lymphocytes. Blood glucose levels did not change significantly following this procedure (85.3 +/- 13.4 mg/dl and 84.1 +/- 12.6 mg/dl respectively). An LP procedure does not impair correct cerebrospinal fluid glucose/blood glucose determination but may cause elevation of peripheral WBC count.