Deck 38: Genital Infections and Sexually Transmitted Infections

Question 1

What is the advantage over cultures of performing nucleic acid amplification tests (NAATs) for cases of gonococcal urethritis?

A) There is no advantage.
B) You can also diagnose syphilis.
C) You can also find Cryptosporidium.
D) The tests are highly sensitive and specific.

Answer 1

D

Question 2

What is the infective particle of Chlamydia?

A) Elementary body
B) Initial body
C) Negri body
D) Spore

Answer 2

A

Question 3

What organism causes chancroid?

A) Treponema pallidum
B) Haemophilus ducreyi
C) Mobiluncus sp.
D) Gardnerella vaginalis

Answer 3

B

Question 4

All of the following conditions can occur in women with undiagnosed cervical gonorrhea, except

A) salpingitis.
B) endometritis.
C) pelvic inflammatory disease (PID).
D) pharyngitis.

Question 5

What is the main symptom of primary syphilis?

A) Purulent discharge
B) Asymptomatic
C) Chancre
D) Genital warts

Question 6

Why are there so many cases of genital herpes in the Unites States?

A) Condoms cannot prevent spread of genital herpes.
B) There are not effective treatments.
C) Lesions shed virus when asymptomatic.
D) Virus persists in the environment for many days.

Question 7

How is genital herpes transmitted?

A) Hot tubs contaminated with HSV
B) Towels used by people with HSV infection
C) Contaminated toilet seats
D) Sexual contact with secretions from infected sites

Question 8

The greatest risk for cervical cancer is genital infections by

A) Trichomonas vaginalis.
B) Treponema pallidum subsp. pallidum.
C) HPV.
D) human immunodeficiency virus.

Question 9

What condition is characterized by an overgrowth of anaerobic bacteria and a decrease in lactobacilli in the vagina?

A) Endometritis
B) Syphilis
C) Gonorrhea
D) BV

Question 10

Which of the following is a symptom for secondary syphilis?

A) Chancre
B) Purulent discharge
C) Petechiae
D) Perianal condylomata lata

Question 11

What is required for culturing Chlamydia?

A) Embryonated chicken eggs
B) Thayer-Martin, modified media
C) Martin-Lewis media
D) Tissue cultures

Question 12

What makes cervicitis difficult to diagnose?

A) Lack of well-recognized symptoms
B) Inability to culture causative agents
C) Most causes are noninfectious
D) Lengthy incubation period

Question 13

What cells are found in BV?

A) Clue cells
B) Lymphocytes
C) Macrophages
D) Squamous epithelial cells

Question 14

A man has sex with a woman on Saturday night. On Wednesday he notices dysuria, pyuria, and a urethral discharge. He goes to his physician who orders a Gram stain of the discharge. The results of the Gram stain show greater than 25 wbc/hpf, moderate gram-negative intracellular diplococci, and 3+ gram-negative diplococci. What is the mostly likely diagnosis?

A) Syphilis
B) Chlamydia
C) Gonorrhea
D) Bacterial vaginosis (BV)

Question 15

Many women who have BV complain of a fishy odor from vaginal secretions. What causes the odor?

A) Carbolic acid
B) Amines
C) Urea
D) Alcohols

Question 16

PID is a complication occasionally seen following infections caused by

A) human papillomavirus (HPV).
B) herpes simplex virus (HSV).
C) Haemophilus ducreyi.
D) Chlamydia trachomatis.

Question 17

Which of the following is a symptom of tertiary syphilis?

A) Gummas
B) Chancre
C) Genital warts
D) Strokes

Question 18

What percentage of women patients who are positive for Neisseria gonorrhoeae typically also have genital chlamydia?

A) 30%
B) 42%
C) 60%
D) 77%

Question 19

Nontreponemal antibody tests for syphilis include all of the following, except

A) rapid plasma reagin (RPR).
B) toluidine red unheated serum test (TRUST).
C) Venereal Disease Research Laboratory (VDRL).
D) enzyme immunoassay (EIA).

Question 20

Although Neisseria gonorrhoeae usually grows in the cervix and male urethra, all the following sites can support growth, except

A) mouth.
B) ears.
C) eyes.
D) anus.

Question 21

All of the following are a cause of ulcerative STIs, except

A) syphilis.
B) gonorrhea.
C) genital herpes.
D) chancroid.

Question 22

A microbiologist is reading a vaginal culture. She sees the very white colonies that are $\gamma$ -hemolytic on a blood agar plate but appear to have feet. What organism could this possibly be?

A) Yeast
B) Gram-positive cocci
C) Gram-negative rods
D) Haemophilus influenzae

Question 23

During the childbearing years, the normal flora of the vagina maintain a low pH, thus encouraging colonization with all the following types of organisms, except

A) lactobacilli.
B) enteric gram-negative rods.
C) anaerobic gram-negative bacilli.
D) gram-positive cocci.

Question 24

What percentage of hepatitis B infections are transmitted through sexual contact?

A) 10%
B) 25%
C) 50%
D) 80%

Question 25

Nongonococcal urethritis is most commonly caused by which of the following organisms?

A) Haemophilus ducreyi
B) Trichomonas vaginalis
C) Chlamydia trachomatis
D) Ureaplasma urealyticum

Question 26

Which of the following is the most common causative agent of urethritis?

A) Staphylococcus aureus
B) Neisseria gonorrhoeae
C) Clostridium perfringens
D) Haemophilus influenzae