Deck 38: Genital Infections and Sexually Transmitted Diseases

Question 1

What test is sufficient for a diagnosis of Neisseria gonorrhoeae in men?

A)Culture
B)Gram stain
C)Enzyme immunoassay (EIA)
D)Radioimmunoassay (RIA)

Answer 1

B
The Gram stain is a sensitive, fast, and cheap tool for diagnosing gonorrhea in men.Gram stain of the penile exudate shows characteristic and diagnostic gram-negative intracellular diplococci in granulocytes.In symptomatic men, the Gram stain has a sensitivity of 90% to 95% and the specificity is over 95%.

Question 2

The PACE 2C is a DNA probe that hybridizes the gonococcal rRNA.This is a sensitive test that allows test batching, which is another advantage because the Chlamydia trachomatis can be simultaneously detected from the same specimen with the PACE 2C
What is the advantage of performing NAAT for cases of gonococcal urethritis?

A)There is no advantage.
B)You can also find syphilis.
C)You can also find Cryptosporidium.
D)You can also find Chlamydia.

Answer 2

D

Question 3

What percentage of women patients that are positive for Neisseria gonorrhoeae typically also have genital chlamydiosis?

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

Answer 3

B
Gonococcal and nongonococcal urethritis infections are not mutually exclusive of each other.Many patients are often co-infected with both N.gonorrhoeae and C.trachomatis with rates as high as 20% in men and 42% in women.

Question 4

What condition is an overgrowth of anaerobic bacteria and a decrease in lactobacillus in the vagina?

A)Endometritis
B)Syphilis
C)Gonorrhea
D)Bacterial vaginosis

Question 5

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

Question 6

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

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

Question 7

What makes cervicitis difficult to diagnose?

A)Lack of well-recognized symptoms
B)Inability to culture causative agents
C)Most causes are noninfectious
D)Symptoms are obvious: not difficult to diagnose

Question 8

What organism causes chancroid?

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

Question 9

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 10

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

A)Condoms cannot prevent spread of genital herpes.
B)No protection is available against genital herpes.
C)Lesions shed virus when asymptomatic.
D)Lesions shed virus only when symptomatic.

Question 11

Which of the following is a symptom of tertiary syphilis?

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

Question 12

What is the infective particle of Chlamydia?

A)Elementary body
B)Initial body
C)Negri body
D)Entire Chlamydia organism

Question 13

Nonculture methods available for detecting Chlamydia include all the following except:

A)enzyme immunoassay (EIA).
B)polymerase chain reaction (PCR).
C)fluorescence polarization immunoassay (FPIA).
D)ligase chain reaction (LCR).

Question 14

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

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

Question 15

There are several Food and Drug Administration (FDA)-approved NAAT assays available with very high rates of sensitivity and specificity (more than 95%) and allow combination testing for N.gonorrhoeae and C.trachomatis
What is required for culturing Chlamydia?

A)Embryonated chicks
B)Thayer-Martin, modified (MTM) media
C)Martin-Lewis (ML) media
D)Tissue cultures

Question 16

What is the main symptom for primary syphilis?

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

Question 17

What is an advantage to using PACE 2C method for detection of Neisseria gonorrhoeae?

A)There is no advantage.
B)You can also find syphilis.
C)You can also find Cryptosporidium.
D)You can also find Chlamydia.

Question 18

How is genital herpes spread?

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

Question 19

Which of the following is a symptom for secondary syphilis?

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

Question 20

What cells are found in bacterial vaginosis?

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

Question 21

Which of the following methods is considered the gold standard for diagnosing genital herpes?

A)Viral isolation
B)Enzyme immunoassay (EIA)
C)Polymerase chain reaction (PCR)
D)GenProbe

Question 22

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 23

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

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

Question 24

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 25

All of the following are a cause of ulcerative sexually transmitted infections (STIs) except:

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