Identify the following image?

Appeared in: NORCET 5 mains

Explanation

The instrument shown is a handheld manometer specifically designed for checking the cuff pressure of an endotracheal (ET) or tracheostomy tube.
The key identifying feature is the dial gauge, which is calibrated in cm H2O and has a low-pressure range (0-60 shown) suitable for this purpose.
The target pressure for an ET tube cuff is 20-30 cm H2O to create an effective seal for ventilation while preventing injury to the trachea.
The small nozzle on the side is a luer-lock connector designed to attach to the pilot balloon of the artificial airway.

Option A: An aneroid BP apparatus measures arterial blood pressure, not cuff pressure. Its gauge is calibrated in millimeters of mercury (mmHg) and has a much higher scale (typically up to 300 mmHg).
Option C: A gas cylinder measure is a high-pressure regulator attached to a gas tank (e.g., oxygen cylinder) to control the flow of gas. It has a different design and measures much higher pressures.
Option D: A suction machine is a device used to aspirate fluids and secretions from the body or airway. It is not a handheld pressure gauge.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Instrument Identification; Endotracheal Tube Cuff Pressure Management as background academic context rather than a clinical decision trigger.
Maintaining ET cuff pressure between 20-30 cm H2O is a critical nursing responsibility to prevent serious complications in mechanically ventilated patients.
Underinflation (pressure below 20 cm H2O) creates a poor seal, increasing the risk of aspiration of oral and gastric contents, which can lead to Ventilator-Associated Pneumonia (VAP).
Overinflation (pressure above 30 cm H2O) can impede blood flow to the tracheal mucosa, causing ischemia, necrosis, and potential long-term complications like tracheal stenosis or tracheoesophageal fistula.

How to Approach the Question

First, carefully examine the device in the image, noting its key features: a handheld grip, a numbered dial gauge, and a connection port.
Analyze the dial's scale. The range is 0-60. This low-pressure range is a major clue to its function.
Evaluate the options based on this observation. A blood pressure apparatus measures in mmHg and has a much higher scale (up to 300 mmHg). A suction machine is not a gauge. A gas cylinder measure is for high-pressure tanks.
Connect the low-pressure scale (measured in cm H2O) to the specific clinical application of endotracheal tube cuff pressure, which has a recommended safe range of 20-30 cm H2O.
This logical deduction identifies the device as a handheld ET pressure cuff manometer.

Concept Tested & Keywords

Concept Tested: Instrument Identification; Endotracheal Tube Cuff Pressure Management
Stem keywords: Identify, image
Lead-in keywords: Identify

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E6 Nursing Fundamentals Taylor pp. 734-736, 131-133

E6 Nursing Fundamentals Potter Perry 12e Part 3 p. 27-29

Practise the full NORCET 5 mains

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