Hyperamylasemia: a result of intracranial bleeding

Area of Science:

• Neurology
• Biochemistry
• Trauma Surgery

Background:

• Hyperamylasemia can occur in patients with head injuries.
• The source of elevated amylase in head trauma patients is not fully understood.
• Salivary gland injury was investigated as a potential source.

Purpose of the Study:

• To investigate the relationship between the severity of cranial trauma and serum amylase levels.
• To determine the origin of hyperamylasemia in patients with head injuries.
• To assess the reliability of serum amylase as a marker for pancreatic trauma in head-injured patients.

Main Methods:

• Serum amylase levels were measured in patients with varying degrees of head trauma.
• Patients were categorized into groups: isolated maxillofacial trauma, simple cranial injury, and cranial injury with intracranial bleeding (confirmed by CT scan).
• Isoamylase analysis was performed to identify the source of elevated amylase.

Main Results:

• No hyperamylasemia was observed in patients with isolated maxillofacial trauma.
• Hyperamylasemia was infrequent in simple cranial injuries without intracranial bleeding.
• A significant proportion of patients with intracranial bleeding showed hyperamylasemia, with varied isoamylase sources.

Conclusions:

• Central neural control may influence serum amylase levels.
• Head injury can lead to hyperamylasemia independent of pancreatic injury.
• Serum amylase levels are unreliable indicators of pancreatic trauma in the presence of head injury.