The percentage and the flow of oxygen in a red colour venture mask is?

Appeared in: HPSSSB Staff Nurse - 2016

Explanation

The red adapter for a Venturi mask is calibrated to deliver a Fraction of Inspired Oxygen (FiO2) of 40%.
To achieve this specific 40% concentration, the oxygen flow meter must be set precisely to 10 liters per minute.
Venturi masks are high-flow devices that use the Bernoulli principle to entrain a fixed amount of room air to mix with the oxygen, ensuring a precise FiO2.
This system is crucial for patients requiring a specific, controlled oxygen concentration, such as those with COPD.

Option A: An FiO2 of 31% at a flow rate of 6 L/min corresponds to the orange Venturi mask adapter, not the red one.
Option B: An FiO2 of 35% at a flow rate of 8 L/min corresponds to the yellow Venturi mask adapter, not the red one.
Option D: An FiO2 of 60% at a flow rate of 15 L/min corresponds to the green Venturi mask adapter, not the red one.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Venturi Mask Color Coding and Oxygen Delivery as background academic context rather than a clinical decision trigger.
Accurate oxygen therapy is a fundamental nursing responsibility. Selecting the correct Venturi adapter and setting the corresponding flow rate is critical for patient safety.
For patients with COPD, administering too much oxygen can suppress their respiratory drive, leading to hypoventilation and carbon dioxide retention (hypercapnia). The precision of the Venturi mask helps prevent this complication.
A key nursing intervention is to regularly check that the air entrainment windows on the Venturi adapter are open and unobstructed to ensure the correct FiO2 is delivered.

How to Approach the Question

Identify the key components of the question: it asks for the oxygen percentage (FiO2) and flow rate for a specific piece of equipment - a 'red colour venture mask'.
Recognize that this is a factual recall question based on standardized medical equipment color-coding.
Recall the standard color-coding system for Venturi mask adapters.
Mentally or physically list the colors and their corresponding FiO2 and flow rates.
Specifically locate the 'red' adapter in your memory or reference.
Match the values for the red adapter (40% FiO2, 10 L/min flow rate) with the given options.

Concept Tested & Keywords

QxKNg3k1gQEXbwy8aAla0E

E6 Nursing Fundamentals Taylor p. 731-733

Practise the full HPSSSB Staff Nurse - 2016

Attempt every question from this paper in a timed mock, then review the full solution for each one.