Definition

1. Noun (plural noun, often abbreviated as ABGs):
   • A diagnostic test: "Arterial blood gases" refers to a medical test that measures specific parameters in a sample of blood taken from an artery. The primary measurements are the acidity or alkalinity (pH), the partial pressure of oxygen (PaO₂), the partial pressure of carbon dioxide (PaCO₂), and the bicarbonate (HCO₃⁻) level.
   • The results of this test: The term can also refer to the numerical values obtained from this analysis, which provide critical information about how effectively the lungs are oxygenating blood and removing carbon dioxide, and how well the kidneys are managing acid-base balance.

Usage

• "Arterial blood gases" is used as a plural noun, typically with a plural verb, to describe both the procedure and its results. It is a standard term in clinical and emergency medicine.
• It is commonly ordered for patients with breathing difficulties, suspected metabolic disturbances, or during critical care.

Examples

• The doctor ordered arterial blood gases to assess the patient's respiratory failure.
• The results of the arterial blood gases showed severe acidosis and hypoxemia.
• Monitoring arterial blood gases is essential in the management of patients on mechanical ventilation.

Advanced Usage

• In clinical decision-making: ABG results are interpreted alongside other clinical findings to diagnose conditions like respiratory acidosis, alkalosis, metabolic acidosis, or alkalosis.
• Serial ABGs: Refers to taking multiple ABG samples over time to track a patient's progress or response to treatment.
  • The team relied on serial arterial blood gases to titrate the ventilator settings.

Variants and Related Words

• ABG (abbreviation): The common acronym for arterial blood gases.
  • The nurse drew an ABG from the radial artery.
• Blood gas analysis: A more general term that can include analysis of venous blood, though it often implies arterial sampling in clinical contexts.
• Arterial blood gas test: A fuller phrasing synonymous with "arterial blood gases."

Synonyms

• Blood gas measurement: A near-synonym, though it is less specific as it does not inherently specify arterial blood.
• Acid-base study: A broader term that includes ABGs as a primary method.

Related Phrases

• To draw an ABG / to draw arterial blood gases: The act of obtaining the blood sample.
  • The respiratory therapist will draw arterial blood gases from the femoral artery.
• ABG interpretation: The process of analyzing the results.
  • Proper ABG interpretation requires understanding of both respiratory and metabolic physiology.

Noun

1. measurement of the pH level and the oxygen and carbon dioxide concentrations in arterial blood; important in diagnosis of many respiratory diseases