Objective: To evaluate the utility of lumbar puncture done routinely a
s part of complete workup in neonatal sepsis. Methodology: Two hundred
and nine consecutive lumbar punctures performed in 169 neonates were
prospectively evaluated for the diagnosis of meningitis over a 6 month
period in a tertiary care referral neonatal unit. Results: Among babi
es with 'suspected clinical sepsis', five (3.3%) were diagnosed to hav
e meningitis. None of the clinically normal babies with high risk obst
etric factors alone had meningitis. The lumbar puncture was traumatic
in 22.9%, and in 26.3% the fluid obtained was inadequate for complete
analysis. The results were inconclusive in 37% of the cases. Conclusio
n: Based on this study, routine lumbar puncture may not be required in
clinically normal newborns with adverse obstetric factors. In babies
with clinical sepsis, through the yield is not very high; there are no
reliable clinical or laboratory markers to predict which babies will
have meningitis and hence these babies would warrant a lumbar puncture
.