To disinfect surgical instruments, they should be kept in boiled water for?

NHM UP Staff Nurse - 2019

Applied Microbiology & Infection control

Easy

Appeared in: NHM UP Staff Nurse - 2019

Explanation

Boiling instruments in water at 100°C for 10 minutes is a standard procedure for achieving high-level disinfection.
This duration is considered sufficient to kill most vegetative bacteria, fungi, and viruses.
The timing for disinfection starts only after the water has reached a full, rolling boil.
While effective for disinfection, boiling does not achieve sterilization as it fails to eliminate all bacterial spores.

Option B: Boiling for 5 minutes is on the lower end of the recommended time and may not be sufficient to reliably kill all vegetative pathogens, especially if the bioburden on the instrument is high.
Option C: A duration of 2 minutes is too short to ensure effective disinfection of medical instruments.
Option D: While boiling for 25 minutes would certainly disinfect the instruments, it is longer than the standard minimum time required. In the context of a multiple-choice question asking for the standard procedure, 10 minutes is the most appropriate answer.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Disinfection of surgical instruments using boiling water as background academic context rather than a clinical decision trigger.
The gold standard for processing surgical instruments is sterilization, not disinfection. Autoclaving (steam under pressure) is the most common and effective method used in hospitals.
Nurses must ensure that critical items like surgical instruments are sterile before use to prevent surgical site infections (SSIs), a major cause of healthcare-associated infections (HAIs).
What if the instrument was an endoscope? Endoscopes are heat-sensitive and cannot be boiled or autoclaved. They are considered semi-critical items and require high-level disinfection (HLD) using chemical sterilants like glutaraldehyde or peracetic acid.

How to Approach the Question

First, identify the keywords in the question: 'disinfect', 'surgical instruments', and 'boiled water'.
This is a factual recall question that tests your knowledge of standard infection control procedures.
Recall the difference between disinfection and sterilization. Disinfection kills most germs, while sterilization kills all microbial life, including spores.
Remember that boiling is a method of disinfection, not sterilization.
Evaluate the given time options based on standard protocols. 2 and 5 minutes are generally too short. 10 minutes is the widely accepted minimum standard. 25 minutes is longer than necessary for the minimum standard.
Select the option that represents the most common and accepted standard minimum time for the procedure.

Concept Tested & Keywords

QDgJjAaDAqoMzRytoM0lNj

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