Definition

1. Noun:
   • A condition where one or more air bubbles obstruct a blood vessel, blocking the flow of blood. This can occur accidentally during medical procedures, trauma, or as a complication from activities like scuba diving.
   • The pain and physiological effects resulting from a rapid change in environmental pressure, which can cause such bubbles to form. This meaning is closely associated with decompression sickness.

Usage

• As a medical complication: The term is used to describe a dangerous, often iatrogenic (caused by medical treatment), event where air enters the circulatory system.
  • Example: The surgeon took great care to prevent an air embolism during the central line insertion.
• As a diving hazard: It is used to describe a specific risk and potential consequence of ascending too quickly from depth.
  • Example: Divers are trained to ascend slowly to avoid an air embolism.

Examples

• Noun:
  • An air embolism is a serious risk during neurosurgery when the patient is positioned upright.
  • Symptoms of an air embolism can include chest pain, shortness of breath, and neurological deficits.
  • The diver was treated for an air embolism in a hyperbaric chamber.

Advanced Usage

• "Venous air embolism": Specifies that the air bubble is trapped in the venous system (veins), often traveling to the heart or lungs.
  • A large venous air embolism can cause a "mill-wheel" murmur heard by a stethoscope.
• "Arterial air embolism": Specifies that the air bubble is in the arterial system (arteries), which can block blood flow to the brain or heart muscle, causing a stroke or heart attack.
  • An arterial air embolism is a catastrophic complication that requires immediate intervention.

Variants and Related Words

• Gas embolism (n): A broader term that includes blockages caused by bubbles of gases other than air (e.g., nitrogen).
• Decompression sickness (n): Often used interchangeably in diving contexts, though technically it refers specifically to nitrogen bubbles forming in tissues and blood due to pressure reduction.
• Aeroembolism (n): A less common synonym for air embolism.

Synonyms

• Gas bubble injury
• Aeroembolism

Related Phrases

• "To suffer an air embolism": To experience this condition.
  • The patient suffered an air embolism following the procedure.
• "Risk of air embolism": The potential for this condition to occur.
  • This technique minimizes the risk of air embolism.

Noun

1. pain resulting from rapid change in pressure
2. obstruction of the circulatory system caused by an air bubble as, e.g., accidentally during surgery or hypodermic injection or as a complication from scuba diving