Full Form of PO2

What is PO2?

PO2, or Partial Pressure of Oxygen, is a key measure in arterial blood gas (ABG) analysis that quantifies the pressure exerted by dissolved oxygen in the blood. In Indian clinical settings, PO2 is routinely assessed to evaluate respiratory function, monitor patients on mechanical ventilation, and diagnose conditions such as hypoxemia, chronic obstructive pulmonary disease (COPD), and pneumonia. The test is performed using a blood sample drawn from an artery, typically the radial artery, and results are interpreted alongside other parameters like pH, PCO2, and bicarbonate. PO2 levels are critical in intensive care units (ICUs), emergency departments, and during pre-operative assessments across Indian hospitals. For medical students and healthcare professionals in India, understanding PO2 is essential for the NEET PG, USMLE, and nursing exams, as it forms the basis of oxygen therapy and pulmonary physiology. Urban centers like Delhi, Mumbai, and Bengaluru have well-equipped labs for ABG analysis, though rural areas may rely on portable devices. A normal arterial PO2 ranges from 75 to 100 mmHg, but variations occur at high altitudes—common in Himalayan regions—and in elderly patients. Thus, PO2 serves as a vital indicator of how efficiently the lungs are delivering oxygen to the bloodstream.

PO2 का फुल फॉर्म

Example

The pulmonologist ordered an arterial blood gas test after the patient reported breathlessness, and the PO2 reading of 60 mmHg confirmed the need for supplemental oxygen.

PO2 — frequently asked questions

Related full forms