Identify the following machine:

Appeared in: AIIMS Delhi NO- 2019

Explanation

The image displays a machine with a heavy, circular, locking door and pressure gauges, which are characteristic features of an autoclave.
Autoclaves, also known as steam sterilizers, are fundamental for infection control in healthcare.
They work by using saturated steam under high pressure, which allows the steam to reach temperatures above the boiling point of water (e.g., 121°C at 15 psi), ensuring the complete destruction of all microorganisms, including resilient bacterial spores.
This method is considered one of the most effective and reliable for sterilizing heat-tolerant medical instruments.

Option B: An ultrasonic instrument washer is a cleaning device, not a sterilizer. It uses sound waves to remove debris but does not kill all microorganisms, especially spores.
Option C: A high-risk medication cupboard is a secure storage unit for drugs. It has no function related to cleaning or sterilizing equipment.
Option D: This option is incorrect because the correct identification, Autoclave, is listed as option A.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of hospital sterilization equipment as background academic context rather than a clinical decision trigger.
Nurses must be able to distinguish between sterile, disinfected, and clean items to ensure patient safety and prevent healthcare-associated infections (HAIs).
A key nursing responsibility is to check the integrity of sterilized packages, including looking for indicators (e.g., chemical tape that changes color) that confirm the item has been through a sterilization cycle.
What if? If an instrument that is only heat-sensitive (e.g., a flexible endoscope) is placed in an autoclave, the high temperature and pressure would destroy it. In that case, a different low-temperature sterilization method, such as ethylene oxide (ETO) gas, would be required.

How to Approach the Question

First, carefully examine the image provided. Note the key physical features: the large metal body, the thick, circular door with a locking wheel, and the control panel with gauges.
Relate these features to your knowledge of common hospital equipment. The design strongly suggests a pressure vessel.
Evaluate the given options. 'Autoclave' is a type of pressure vessel used for steam sterilization.
Consider the other options. An 'ultrasonic washer' looks different (more like a bath), and a 'medication cupboard' is a storage cabinet.
Conclude that the machine's appearance is a perfect match for an autoclave, making it the correct answer.

Concept Tested & Keywords

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E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart A (pp 26-201 of 604) p. 127-129

E6 Nursing Fundamentals Potter Perry 12e Part 2 p. 231-233

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