RRB Staff Nurse Jaipur-6th June 2018
Nursing Foundation
Easy

The thermometer used in common should be washed with soap and water and disinfected with

Appeared in: RRB Staff Nurse Jaipur-6th June 2018

Explanation

  • The question asks for the correct disinfectant and its dilution for a common thermometer.
  • Savlon, a combination of chlorhexidine and cetrimide, is a widely used hospital antiseptic.
  • The standard recommended dilution for disinfecting clinical equipment like thermometers with Savlon is 1:20.
  • This concentration is effective for killing most pathogenic microorganisms after the thermometer has been cleaned with soap and water.

Why Other Options Were Wrong

  • Option A: The strength provided (1:20) is incorrect for Dettol (chloroxylenol) when used for disinfecting thermometers.
  • Option C: The strength provided (1:20) is incorrect for Lysol (a cresol-based disinfectant).
  • Option D: The strength provided (1:20) is incorrect for Fairgenol, which is also a cresol-based disinfectant similar to Lysol.

Related Visual

Visual explanation — Related Visual
  • Visual 1: Infographic: A step-by-step visual guide on 'How to Clean and Disinfect a Clinical Thermometer', showing the process from washing with soap and water to immersion in the correct disinfectant solution for the required time.
  • Visual 2: Chart: A comparative chart of common hospital disinfectants (Savlon, Dettol, Lysol) detailing their chemical composition, recommended dilutions for various purposes (skin, instruments, surfaces), and necessary contact times.
Clinical Relevance
  • Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Disinfection of clinical thermometers and correct disinfectant dilution strengths as background academic context rather than a clinical decision trigger.
  • Proper disinfection of shared medical equipment is a cornerstone of infection control, preventing nosocomial (hospital-acquired) infections.
  • Nurses are directly responsible for ensuring equipment is decontaminated according to hospital protocol to protect patient safety.
  • Using incorrect disinfectant concentrations can lead to either ineffective disinfection (if too dilute) or damage to equipment and potential harm to patients (if too concentrated).
How to Approach the Question
  • First, identify the core of the question: it's asking for the correct combination of a specific disinfectant and its dilution strength for a specific task (disinfecting a thermometer).
  • This is a factual recall question. You need to access your knowledge of standard hospital procedures and disinfectant properties.
  • Evaluate each option individually. For each option, ask yourself: 'Is this the correct dilution for this specific disinfectant when used for thermometers?'
  • Recall or deduce the standard dilutions. A common nursing school mnemonic is that Savlon is often used at 1:20, while Dettol and Lysol are used at 1:40 for general disinfection.
  • Compare the options to this standard knowledge. Option A (Dettol 1:20), C (Lysol 1:20), and D (Fairgenol 1:20) use an incorrect strength.
  • Conclude that Option B (Savlon 1:20) is the only one that presents a correct disinfectant with its standard, recommended strength for the stated purpose.
Concept Tested & Keywords
  • Concept Tested: Disinfection of clinical thermometers and correct disinfectant dilution strengths.
  • Stem keywords: thermometer, disinfected, washed with soap and water
  • Lead-in keywords: BEST, MOST RELEVANT CLUE

Question ID

QWMxHfuZD5UsELaNpoRyqQ

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