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Exam 9: Physical and Chemical Control of Microbes

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Question 31

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All of the following disrupt the cytoplasmic membrane except ________.

A) detergents
B) quaternary ammonium compounds
C) high concentration phenols
D) iodine

E) A) and D)
F) B) and C)

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Question 32

Multiple Choice

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Surfactants work by ________.

A) coating the organism,preventing interaction with its environment
B) blocking transport into the organism
C) blocking transport out from the organism
D) disrupting membrane integrity
E) All of the choices are correct

F) A) and B)
G) A) and C)

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Question 33

Multiple Choice

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Dry heat ________.

Pseudomonas is resistant to soaps.

A method for sterilizing milk,called ________ treatment,uses 134°C for 1 to 2 seconds.

Which of the following factors will influence the action of antimicrobial agents?

Removal of moisture by dehydration is called ________.

The process that destroys or removes all microorganisms and microbial forms including bacterial endospores on inanimate objects is ________.

Ethylene oxide is a sterilizing gas.

Pasteurization will make milk sterile.

Disinfection of beverages such as apple juice,milk,wine is optimally achieved by ________.

Which of the following types of control agents would be used to achieve sterility?

The shortest time required to kill all the microbes in a sample at a specified temperature is called the ________.

The lowest temperature needed to kill all microbes in 10 minutes is the ________.

The use of aldehydes as antimicrobial agents is limited due to ________.

Which of the following is not used as an antiseptic?

A woman who is 38 weeks pregnant is admitted for a scheduled cesarean section. The RN performs an assessment of the patient and prepares her for the surgery. Prior to the procedure, an indwelling urinary catheter is placed. -After preparing the patient's skin,the RN brushes against the sterile field with her arm.What is the most appropriate action by the RN? 

A 13-year-old male is admitted to the pediatric intensive care unit. The patient has a history of mental retardation and cerebral palsy following an anoxic injury as an infant. The patient was admitted two months earlier due to aspiration pneumonia, necessitating a lengthy hospital stay, mechanical ventilation, and intravenous antibiotics. His caregiver reports another aspiration event two days prior. For the past 24 hours, the patient has been lethargic with a frequent cough producing thick sputum. Upon presentation to the hospital, the patient is noted to have a fever, low oxygen saturations, and low blood pressure. Upon arrival to the intensive care unit, the patient is cool, pale, and has poor pulses and capillary refill. Following administration of intravenous fluid boluses, it is determined the patient needs central venous access for fluid and medication administration. The RN prepares for the sterile procedure. -Following successful placement of the central venous line,the RN is diligent to prevent infection when accessing the catheter and administering medications.Which of the following actions should be completed prior to use of the line?  

The advantage of using ethylene oxide as a sterilant over moist heat sterilization in an autoclave is that ________.

Isopropyl alcohol wiped across a skin site can sterilize it.