L4: STDs Flashcards
(50 cards)
Def of STDs
Diseases transmitted by sexual contact
Classification of STDs
Classification of STDs
- Viral
Classification of STDs
- Bacterial
Classification of STDs
- fungal
- Candida Albicans.
- Torulopsis glabrata.
Classification of STDs
- Protozoal
- Trichomonas vaginalis.
- Entameba histolytica vaginitis.
- Giardia lamblia vaginitis
Classification of STDs
- Parasitic
- Tenia pubis.
- Sarcoptes scabiei.
Classification of STDs
- Chlamydial
C. trachomatis
Classification of STDs
- Mycoplasma
- Mycoplasma hominis.
- Urea-plasma urealyticum.
Incidence of HPV
It is the most common viral STD
Causative Organism of HPV
caused by DNA Popova virus.
Sites affected by HPV
affects the vuvla, vagina, cervix, perineum and anus as condyloma accuminata (genital warts).
Types & Pathologies of HPV
- Types 16 &18 cause flat warts with the risk of CIN.
- Types 6 &11 cause exophytic warts with no malignant potential.
CP of HPV
- The characteristic lesion is genital wart which may be single or multiple.
Dx of HPV
- Direct demonstration of virus: by electron microscopy
- Detection of viral Ag
- PCR
- Viral isolation: on tissue culture.
- Pap smear: Koilocytosis may present [some cells with atypia or dysplasia]. ⭐️
- Colposcopy: mandatory for all cases to exclude atypical cells. ⭐️
TTT of HPV
- Small lesion: Topical podophyllin, trichloroacetic acid or 5-fluorouracil.
- Large lesion: Cryotherapy, electrocautery or laser therapy
Causative Organism of HSV
DNA herpes simplex virus type II.
CP of HSV
- Multiple vesicles which may coalesce together to form superficial painful ulcers.
INVx in HSV
- Direct demonstration of virus: after staining by Giemsa stain (presence of multinucleated giant cells is suggestive). ⭐️
- Viral isolation: On tissue culture.
- Serology: for detection of viral Abs in patient’s serum.
TTT of HSV
- Antiviral drugs: Acyclovir, Iodoxuridine & Vidarabine.
- Symptomatic treatment: Analgesics.
Causative Organism of AIDS
- Human immunodeficiency virus (HIV)
- RNA retrovirus
- Attacks T4 lymphocytes → cell death OR T4 dysfunction with altered body immunity.
CP of AIDS
- The patient may be a carrier for many years.
- Aids related complex: Lymphadenopathy, oral candidiasis, pneumonias, recurrent viral infections like HSV or cytomegalovirus, T.B., toxoplasmosis.
- Persistent lymphadenopathy, fungal, bacterial and viral infections.
INVx of AIDS
- Direct demonstration of virus: by PCR.
- Viral isolation: by lymphocyte culture.⭐️
- Serology: Detection of viral Abs in patient’s serum by ELIZA or Western blotting. ⭐️
TTT of AIDS
Mainly prophylactic to avoid acquiring infection.