PaO2sta

PaO2sta is not a standard term in mainstream medical guidelines. In sources where it appears, it is generally used to refer to the arterial oxygen tension (PaO2) under steady-state conditions—after ventilator settings and oxygen delivery have been stabilized. This contrasts with a single, instantaneous PaO2 value or with measurements taken during dynamic changes in ventilation.

Measurement and interpretation of PaO2sta would rely on arterial blood gas analysis, reported in millimeters of mercury (mmHg). Obtaining a PaO2sta typically requires a period of stable FiO2 and ventilator parameters to allow PaO2 to reach a plateau. The exact definition can vary by source, and factors such as hemoglobin level, cardiac output, shunting, and overall gas exchange efficiency can influence the value.

Clinical use of PaO2sta, when referenced, would be to assess oxygenation under stable conditions and to compare against target ranges. Values below the expected steady-state range may indicate inadequate oxygenation or impairment of gas exchange, while higher values could reflect adequate or excessive oxygen delivery. However, because PaO2sta is not widely standardized, clinicians typically rely on conventional metrics such as PaO2, SpO2, and the PaO2/FiO2 ratio for guidance in management decisions.

See also: PaO2, arterial blood gas, SpO2, PaO2/FiO2 ratio, FiO2, oxygen delivery. History: The term PaO2sta is infrequently used in major guidelines and literature, and its precise meaning tends to depend on the source.