Central Nervous System Bleeding After a Lumbar Puncture: Still an Ongoing Complication

Area of Science:

• Neurology
• Neurosurgery
• Internal Medicine

Background:

• Lumbar puncture (LP) is a diagnostic and therapeutic procedure involving cerebrospinal fluid analysis or medication delivery.
• While generally safe, LP carries a risk of central nervous system (CNS) bleeding, a rare but serious complication.
• This report details two cases of major bleeding complications following LP.

Observation:

• Case 1: Patient with acute renal failure on low molecular weight heparin received LP for epidural steroid injection, developing bleeding complications.
• Case 2: Patient with myelodysplasia and thrombocytopenia underwent LP for meningitis workup, also experiencing significant bleeding.
• Both patients experienced subarachnoid and subdural hemorrhage, leading to cauda equina compression, paralysis, and posterior circulation infarction due to vasospasm.

Findings:

• Patients with pre-existing bleeding tendencies (e.g., renal failure, thrombocytopenia) and those on anticoagulants are at increased risk for LP-related hemorrhage.
• Systemic illnesses and medication side effects can exacerbate bleeding risks associated with lumbar puncture.
• Hemorrhage into the cerebrospinal fluid space can cause severe neurological deficits, including paralysis and cerebral infarction.

Implications:

• Thorough pre-procedural assessment of a patient's coagulation status and medical comorbidities is essential before performing lumbar punctures.
• Implementing stringent screening protocols for bleeding risks can help mitigate severe complications associated with lumbar punctures.
• This highlights the critical need for careful patient selection and risk-benefit analysis in procedures like lumbar puncture, particularly in vulnerable populations.