cervical infections Flashcards
most common causes of intectious cervicitis
Neisseria gonorrheoeae Chlamydia trachomatis herpes simples virus human papilloma virus trichomoniasis mycoplasma genitalium cytomegalovirus bacterial vaginosis
If untreated, cervicitis can lead to
Pelvic inflammatory disease
higher risk of infertility
ectopic pregnancy
chronic pelvic pain
methods for testing gonorrhea
urethral gram stain
culture on Thayer-Martin media
DNA probes
DNA amplification techniques on cervical or urine specimens
Testing for chlamydia
nucleic acid amplification techniques on cervical or urine specimens
HPV infection testing
cervical cytology (Pap test) and HPV testing are used with colposcopy and biopsy
The signs of cervicitis
edema and increased vascularity, making the cervix appear swollen and reddened.
Cervicitis can be diagnosed histologically when
polymorphonuclear leukocytes, lymphocytes, or histiocytes are noted
The cervix is in direct contact with the vagina and is exposed to
viral, bacterial, fungal, and parasitic agents
Cervical infections occur in the absence of
vaginal disease
Through sexual contact, the cervix may be infected with
N gonorrhoeae, C trachomatis, HSV, HPV, and Mycoplasma spp.
Why is screening high-risk populations important?
Because many women are asymptomatic
Patients diagnosed with gonorrhea or chlamydia are at risk for infection with other sexually transmitted diseases (STDs). Counseling and testing should be offered for
syphilis, hepatitis B, and HIV, as well as testing for HPV
Pathogenesis of C trachomatis
C trachomatis is often “silent,” an undiagnosed, ongoing infection may ascend into the endometrial cavity to the fallopian tubes, causing salpingitis as well as pelvic peritonitis.
Complications of chlamydia
With the cervix as a reservoir, the organism may infect the fetus during its passage through the birth canal. C trachomatis transmitted to the eyes causes trachoma and inclusion conjunctivitis or pneumonia of the newborn.
Pathogenesis of N. gonorrhoeae
Cervical infection which ascends to infect the endometrium and fallopian tubes.
At what time in a woman’s cycle is she most at risk for cervicitis ascending into the upper reproductive tract?
at the end of menses when there is no protective mucus plug.
Fitz-Hugh-Curtis syndrome or perihepatitis
rare complication usually caused by C trachomatis and N gonorrhoeae and is characterized by adhesions between the liver and the parietal peritoneum.
2 types of HSV
herpes simplex virus type 1 (HSV-1) and herpes simplex virus type 2 (HSV-2)
Which HSV infection causes most of the genital herpes infections
HSV-2
When can HSV-1 cause genital herpes
oral-genital or genital-genital contact
HSV infection presentation
cervical lesions similar to those found on the vulva. First the lesion is vesicular and then becomes an ulcer. Primary infections may be extensive and severe, producing constitutional symptoms of low-grade fever, myalgia, and malaise lasting approximately 2 weeks. The ulcers heal without scarring. Once infection has occurred, even after healing, the virus continues to reside in the nerve cells of the affected area for life.
HSV recurrence
less severe in symptoms and duration
HSV is found in the lesions caused by HSV infection, but viral shedding can also occur
in asymptomatic patients without obvious lesions. Women with either active infection or asymptomatic HSV shedding from normal-appearing skin can infect their infants during vaginal delivery. Those with a positive HSV test near term are advised to undergo caesarean section.
HPV is spread by
skin-to-skin contact
Women with vulvar HPV lesions should be assessed for
cervical HPV lesions and infection
Appearance of cervical HSV lesions
The cervical lesions are flatter than typical genital warts (condylomata acuminata) seen on the vulva and perianal skin. In fact, they often are invisible to the naked eye, becoming visible only after application of a dilute solution of acetic acid (acetowhite epithelium) or by colposcopic examination (white epithelium, mosaicism, and coarse punctation).
Low risk HPV types
6, 11, 42, 43, 44, 54, 55 (associated with benign lesions of the cervix)
High risk HPV types
16, 18, 31, 33, 35, 39, 46, 56 (associated with intraepithelial neoplasia and invasive cancers)
What percent of HPV infections resolve in 1 year?
In two years?
70% in one year
90% by 2 years
Persistent HPV infection may progress to
precancerous lesions and, over time, cervical cancer
Most important strategies for prevention of cervicitis
Abstinence
condoms
barrier methods
Which STIs should be screened for yearly in high risk populations, regardless of symptoms
gonorrhea and chlamydia–most prevalent in young adults aged 19-25
significant long-term complications
at risk populations for STI
multiple partners 19-25 inconsistent use of condoms or barrier previous hx STI current or prior drug abusers
when should pregnant women be screened for syphilis and HIV
at the first prenatal visit
Pregnant women with a history of HSV should be screened
near term
Women at high risk of premature delivery should be screened for
bacterial vaginosis
The prompt recognition and proper repair of cervical lacerations lessen the risk of
cervical stenosis and cervical incompetence in future pregnancies.
When hysterectomy is performed, if possible, the cervix should be
removed to minimize the risk of cervical diseases.
Common s/sx acute cervicitis
Purulent vaginal discharge
Some women have vaginal bleeding, most frequently after sexual intercourse, although intermenstrual bleeding and bleeding during examination can also occur.
burning and itching
In acute cervicitis, the pathogen may be determined by the appearance of
cervical discharge
thick and creamy discharge
gonorrheal infection
foamy and greenish-white discharge
trichomonal infection
white/curd-like discharge
candidiasis
thin and gray discharge
bacterial vaginosis
Amine or fishy odor when combined with KOH
bacterial vaginosis
purulent discharge from a reddened, congested cervix, or may be asymptomatic, without visible signs
Chlamydia
acutely inflamed, edematous cervix with purulent discharge from cervical os
N. gonorrhoeae
strawberry-like appearance covers the ectocervix and may extend to the adjacent vaginal mucosa.
trichomonal infection
white cheesy exudate may be difficult to wipe away and once wiped off usually leaves punctate hemorrhagic areas
candidiasis
which organisms of cervicitis may be accompanied by urethritis with frequency, urgency, and dysuria
Gonorrheal or chlamydial
If any infection is associated with acute salpingitis, the symptoms and signs will include
pelvic peritonitis
Postcoital bleeding or intermenstrual spotting may occur because of
hyperemia of the infected cervix associated with freely bleeding areas. Cervical friability with bleeding occurs when endocervical smears are obtained.
Colposcopic findings of acute cervicitis reveal
an altered microangioarchitecture with marked increase in the surface capillaries, which when viewed end-on may show a pattern of diffuse “punctation.”
characteristic double-hairpin capillaries
Trichomoniasis
Colposcopic picture in an inflammatory process
diffuse with ill-defined margins in contrast with the localized and sharply demarcated vascular changes associated with intraepithelial neoplasia
when colposcopic changes with malignancy are present alongside those associated with inflammation:
Invasive cancer with is secondarily infected