CHAPTER 9: ANTISEPTICS AND DISINFECTANTS

CHAPTER 9: ANTISEPTICS AND DISINFECTANTS

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

1. Which of the following agents is not related chemically to phenol (carbolic acid)?

a.	hexachlorophene (pHisoHex)	c.	cresol (Lysol)
b.	resorcinol	d.	chlorhexidine (Hibiclens)

 

 

ANS:  D

 

	Feedback
A	Incorrect: This is related to phenol as a bisphenol composed of two phenolic groups.
B	Incorrect: Used in the topical treatment of psoriasis, this is related to phenol.
C	Incorrect: Lysol is a phenol.
D	Correct: Hibiclens is a cationic bisbiguanide, not related chemically to phenol.

 

 

PTS:   1                    REF:   p. 245            OBJ:   Cognitive Level: Knowledge

 

2. An agent that has been shown to cause central nervous system toxicity in infants is:

a.	silver nitrate.	c.	mandelic acid (Mandelamine).
b.	hexachlorophene (pHisoHex).	d.	thimerosal (Merthiolate).

 

 

ANS:  B

 

	Feedback
A	Incorrect: Silver nitrate has not shown evidence of CNS toxicity when used according to manufacturer’s instructions.
B	Correct: Risk for CNS toxicity resulted in stopping hexachlorophene use for bathing.
C	Incorrect: Mandelic acid has not shown evidence of CNS toxicity when used according to manufacturer’s instructions.
D	Incorrect: Thimersol has not shown evidence of CNS toxicity when used according to manufacturer’s instructions.

 

 

PTS:   1                    REF:   p. 245 | p. 249

OBJ:   Cognitive Level: Comprehension

 

Because of a recent outbreak of nosocomial infections, the charge nurse on a surgical floor at a general hospital reviews information on antiseptics, disinfectants, and handwashing technique with her staff.

 

3. When teaching a client about using iodine, the nurse should include which of the following:

a.	monitor for hypersensitivity response.
b.	iodine does not stain skin, but it does stain clothing.
c.	avoid getting iodine products directly on the skin.
d.	iodine is not effective against viruses.

 

 

ANS:  A

 

	Feedback
A	Correct: Hypersensitivity to iodine is a common and potentially serious.
B	Incorrect: Iodine stains both skin and clothing.
C	Incorrect: Iodine products are used on the skin.
D	Incorrect: Iodine products are effective against a broad range of organisms, including viruses.

 

 

PTS:   1                    REF:   p. 243, Table 9-1

OBJ:   Cognitive Level: Application

 

4. Benzalkonium chloride (Zephiran) can be classified as a(n):

a.	phenol.	c.	oxidizing agent.
b.	surface-active agent.	d.	chloroform.

 

 

ANS:  B

 

	Feedback
A	Incorrect: It is not a phenol.
B	Correct: It is a surface-active agent, also referred to as a wetting agent.
C	Incorrect: It is not an oxidizing agent.
D	Incorrect: It is not a chloroform.

 

 

PTS:   1                    REF:   p. 247            OBJ:   Cognitive Level: Knowledge

 

5. The optimal strength of ethanol for instrument disinfection and storage is:

a.	50%.	c.	95%.
b.	70%.	d.	10%.

 

 

ANS:  A

 

	Feedback
A	Correct: Fifty percent concentration of ethanol appears to be a more effective germicide (than 70%), when long contact can be maintained.
B	Incorrect: This is most appropriate for rapid skin disinfection.
C	Incorrect: This is not an appropriate concentration.
D	Incorrect: This is not an appropriate concentration.

 

 

PTS:   1                    REF:   p. 245            OBJ:   Cognitive Level: Knowledge