💨 Oxygen Therapy via Nasal Cannula – Nursing Concept

Oxygen therapy through nasal cannula is commonly used for patients who need low concentration oxygen support.

Recommended Flow Rate:
The recommended flow rate of oxygen via nasal cannula is 1–4 liters per minute (L/min).

Explanation:
Nasal cannula is a low-flow oxygen delivery device. At 1–4 L/min, it provides approximately 24%–36% oxygen concentration.

Although technically it can deliver up to 6 L/min, higher flow rates may cause nasal dryness, irritation, and discomfort. Therefore, for routine oxygen administration, 1–4 L/min is generally recommended in exam settings.

Nursing Responsibilities:

• Check doctor’s order before starting oxygen
• Monitor SpO₂ and respiratory rate
• Assess for nasal irritation or dryness
• Use humidification if required

Exam Point:
Nasal Cannula = Recommended 1–4 L/min (Exam preferred answer).
Very commonly asked in Medical-Surgical Nursing exams.

💚 Exam Objective Nursing – Asha D
Concept clarity • Strong recall • Nursing success