With Complete Solutions
/ 1. Which element in the circular chain of infection can be eliminated by preserving skin
integrity?
A. Host
B. Reservoir
C. Mode of transmission
D. Portal of entry - Answer-✅D.
In the circular chain of infection, pathogens must be able to leave their reservoir and be
transmitted to a susceptible host through a portal of entry, such as broken skin.
/.2. Which of the following will probably result in a break in sterile technique for
respiratory isolation?
A. Opening the patient's window to the outside environment
B. Turning on the patient's room ventilator
C. Opening the door of the patient's room leading into the hospital corridor
D. Failing to wear gloves when administering a bed bath - Answer-✅C.
Respiratory isolation, like strict isolation, requires that the door to the door patient's
room remain closed. However, the patient's room should be well ventilated, so opening
the window or turning on the ventricular is desirable. The nurse does not need to wear
gloves for respiratory isolation, but good hand washing is important for all types of
isolation.
/.3. Which of the following patients is at greater risk for contracting an infection?
A. A patient with leukopenia
B. A patient receiving broad-spectrum antibiotics
C. A postoperative patient who has undergone orthopedic surgery
D. A newly diagnosed diabetic patient - Answer-✅A.
Leukopenia is a decreased number of leukocytes (white blood cells), which are
important in resisting infection. None of the other situations would put the patient at risk
for contracting an infection; taking broad-spectrum antibiotics might actually reduce the
infection risk.
/.4. Effective hand washing requires the use of:
A. Soap or detergent to promote emulsification
B. Hot water to destroy bacteria
, C. A disinfectant to increase surface tension
D. All of the above - Answer-✅A.
Soaps and detergents are used to help remove bacteria because of their ability to lower
the surface tension of water and act as emulsifying agents. Hot water may lead to skin
irritation or burns.
/.5. After routine patient contact, hand washing should last at least:
A. 30 seconds
B. 1 minute
C. 2 minutes
D. 3 minutes - Answer-✅A.
Depending on the degree of exposure to pathogens, hand washing may last from 10
seconds to 4 minutes. After routine patient contact, hand washing for 30 seconds
effectively minimizes the risk of pathogen transmission.
/.6. Which of the following procedures always requires surgical asepsis?
A. Vaginal instillation of conjugated estrogen
B. Urinary catheterization
C. Nasogastric tube insertion
D. Colostomy irrigation - Answer-✅B.
The urinary system is normally free of microorganisms except at the urinary meatus.
Any procedure that involves entering this system must use surgically aseptic measures
to maintain a bacteria-free state.
/.7. Sterile technique is used whenever:
A. Strict isolation is required
B. Terminal disinfection is performed
C. Invasive procedures are performed
D. Protective isolation is necessary - Answer-✅C.
All invasive procedures, including surgery, catheter insertion, and administration of
parenteral therapy, require sterile technique to maintain a sterile environment. All
equipment must be sterile, and the nurse and the physician must wear sterile gloves
and maintain surgical asepsis. In the operating room, the nurse and physician are
required to wear sterile gowns, gloves, masks, hair covers, and shoe covers for all
invasive procedures. Strict isolation requires the use of clean gloves, masks, gowns and
equipment to prevent the transmission of highly communicable diseases by contact or
by airborne routes. Terminal disinfection is the disinfection of all contaminated supplies
and equipment after a patient has been discharged to prepare them for reuse by
another patient. The purpose of protective (reverse) isolation is to prevent a person with
seriously impaired resistance from coming into contact who potentially pathogenic
organisms.