Chapter 6

Life expectancy after contracting the human immunodeficiency virus (HIV) is 5 years. 10 years. 15 years. 25 years.

25 years.

Which percentage of hepatitis B (HBV) cases are asymptomatic? 15% 33% 50% 75%

33%

Homosexual contact accounts for which percentage of AIDS cases? 10% 35% 48% 82%

48%

Which mode of transmission is the leading cause of AIDS? Breastfeeding Sexual contact Needle sharing Occupational accident

Breastfeeding

Hepatitis __ are generally transmitted through contact with bodily fluids. C and D A and E B and E A and C

C and D

Which point of contact is NOT a primary route of transmission for the human immunodeficiency virus (HIV)? Blood Casual Sexual Perinatal

Casual

Which hepatitis virus is transmitted through contaminated food and water? Hepatitis B Hepatitis C Hepatitis D Hepatitis E

Hepatitis E

Which is NOT a blood-borne pathogen? Hepatitis B Hepatitis C Herpes labialis Human immunodeficiency virus (HIV)

Herpes labialis

Which body system is destroyed by HIV disease? Nervous Immune Endocrine Respiratoryv

Immune

Which scenario presents the highest risk of contracting AIDS? Bitten by HIV-infected patient Blood transfusion with HIV-infected blood Intravenous drug abuse using shared needles Homosexual contact with a man who injects drugs

Intravenous drug abuse using shared needles

A percutaneous transmission spreads through which route? Skin Lungs Blood Mucous

Skin

Which is a recognizable symptom of a hepatitis B (HBV) infection? Vomiting Coughing Yellow skin Loss of vision

Yellow skin

All of the following types of viral hepatitis are bloodborne except hepatitis a. A b. B c. C d. D

a. A

A hepatitis B carrier is: a. HBsAg-positive b. anti-HBsAg-positive c. HIV-positive

a. HBsAg-positive

Which is a correct statement about hepatitis B? a. Only about one-third of those infected have recognizable symptoms. b. Most dental assistants who have been working for more than 5 years get hepatitis B. c. Most persons who get hepatitis B die. d. Hepatitis B is usually spread through drinking contaminated water.

a. Only about one-third of those infected have recognizable symptoms.

Most persons who develop HIV disease become HIV-positive within __________ after exposure. a. 1 to 2 weeks b. 6 to 12 weeks c. 5 to 6 years d. 9 to 10 years

b. 6 to 12 weeks

Which of the following is not a mode of spread of HIV disease? a. Percutaneous b. Inhalation c. Sexual activities d. From infected mother to child at birth

b. Inhalation

How does HIV cause AIDS? a. It destroys the liver. b. It destroys the body's defenses against diseases. c. It destroys the ability to control muscle action. d. It paralyzes the body.

b. It destroys the body's defenses against diseases.

The vaccine for hepatitis B protects against: a. hepatitides A, B, C, and D b. hepatitides B and D c. hepatitides B, C, and D d. hepatitis D

b. hepatitides B and D

Occupationally acquired hepatitis B in health care workers is most commonly contracted: a. by ingesting contaminated water b. through sharps injuries c. through inhalation of respiratory aerosols

b. through sharps injuries

The best way for one to avoid contracting a bloodborne disease in the office is: a. not to shake hands with the patients b. to wear a mask all day long even between patients c. to handle sharps carefully

c. to handle sharps carefully

About how many persons in the world have been infected with HIV? a. 4000 b. 400,000 c. 4 million d. 78 million e. 400 million

d. 78 million

About what percent of persons infected with hepatitis C virus become chronic carriers of the disease? a. 5 b. 25 c. 55 d. 80 e. 99

d. 80

The risk of getting AIDS as a dental assistant is: a. very high b. high c. moderate d. very low

d. very low

Hepatitis is an inflammation of the __. cell liver lungs kidney

lungs

There are nearly a __ Hepatitis B (HBV) carriers in the United States. billion million hundred thousand

million

Blood-borne pathogens enter the __ during some dental procedures. ears eyes heart mouth

mouth