Fatal myeloencephalopathy due to intrathecal vincristine administration

I M al Fawaz1

  • 1Department of Paediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia.

Insights

Accidental intrathecal vincristine administration in a child with leukemia caused severe neurological damage and death. Separating vincristine and intrathecal therapy administration is crucial to prevent fatal outcomes.

Area of Science:

  • Pediatric Oncology
  • Neuro-oncology
  • Clinical Toxicology

Background:

  • Leukemia treatment often involves chemotherapy agents like vincristine.
  • Intrathecal chemotherapy is used for central nervous system leukemia.
  • Vincristine is a vinca alkaloid chemotherapy drug.

Observation:

  • A child diagnosed with leukemia received accidental intrathecal administration of vincristine.
  • The patient subsequently developed profound sensory and motor dysfunction.
  • Encephalopathy and death followed the neurological complications.

Findings:

  • Intrathecal vincristine administration is highly neurotoxic.
  • The route of administration is critical for vincristine safety and efficacy.
  • Accidental intrathecal administration can lead to severe neurological sequelae and mortality.

Implications:

  • Strict protocols are needed to prevent medication errors in pediatric oncology.
  • Clear separation of administration times for systemic vincristine and intrathecal therapies is essential.
  • This case highlights the critical importance of double-checking drug orders and administration routes in high-risk patient populations.

Related Concept Videos

Drugs that Destabilize Microtubules01:10

Drugs that Destabilize Microtubules

Microtubules are dynamic structures and can be regulated by microtubule targeting agents (MTAs). Microtubule destabilizing drugs are a class of MTAs that destabilize and prevent microtubules' polymerization. Both natural and synthetic chemicals can be found under this class of drugs. Vincristine and vinblastine, two vinca alkaloids, and colchicine were among the first to be discovered. These drugs can affect cells in various ways, either by inducing a change in cell morphology, preventing...
Local Anesthetics: Adverse Effects01:12

Local Anesthetics: Adverse Effects

While local anesthetics are generally safe and well-tolerated, they can occasionally cause adverse effects that vary in severity. Local anesthetics can induce toxicity at two distinct levels. They can either produce local effects through direct contact with the neural elements or be absorbed into the bloodstream from the injection site, leading to systemic effects.
Once absorbed into the systemic circulation, local anesthetics can affect the organs that depend on the functioning of sodium...
Drug Delivery: Parenteral Route01:29

Drug Delivery: Parenteral Route

The parenteral route is a critical method of drug administration. It delivers compounds directly into the systemic circulation and bypasses the gastrointestinal tract. This approach is particularly advantageous for drugs that exhibit poor absorption or instability when administered orally.
There are three primary parenteral routes: intravenous (IV), intramuscular (IM), and subcutaneous (SC). The IV route introduces the drug directly into the bloodstream, ensuring immediate action. The IM route...
Cytotoxic Edema: Pathophysiology01:21

Cytotoxic Edema: Pathophysiology

Cytotoxic edema is a form of cerebral edema characterized by intracellular swelling of neurons, astrocytes, and other glial cells. It develops when the mechanisms responsible for maintaining ionic gradients across the cell membrane become impaired. Under normal physiological conditions, the sodium–potassium ATPase actively transports sodium ions out of the cell and potassium ions into the cell, preserving osmotic balance and enabling electrical signaling. This pump requires a continuous supply...
Hepatic Encephalopathy01:29

Hepatic Encephalopathy

DefinitionHepatic encephalopathy is a reversible neurologic syndrome that results from advanced liver dysfunction or portosystemic shunting. It leads to disturbances in cognition, behavior, and motor function due to the brain’s exposure to gut-derived toxins that the liver fails to detoxify.EtiologyThis condition develops either in the setting of acute fulminant hepatitis or progressively during chronic liver disease, such as cirrhosis and portal hypertension. Portosystemic shunting—including...
Secondary Spinal Cord Injury llI: Pathophysiology01:25

Secondary Spinal Cord Injury llI: Pathophysiology

Early Ischemia and Ionic ImbalanceWithin minutes of spinal cord injury, a secondary cascade begins, progressing over hours to weeks. Vascular damage reduces blood flow, causing ischemia and mitochondrial dysfunction. ATP depletion leads to ion pump failure, membrane depolarization, sodium influx, potassium efflux, and water accumulation, resulting in cellular swelling. Increased intracellular calcium further disrupts mitochondria and accelerates cellular injury.Excitotoxicity and Neuronal...