Exam 48: Protozoa From Other Body Sites

Match the infectious stage of T.gondii with the appropriate description. -Sporozoites

The troph of the motile T.vaginalis organism measures 7 to 23 mm long and 5 to 15 mm wide.The recommended treatment of choice for this urogenital infection is:

The CSF would reveal which of the following results in infections caused by N.fowleri?

The Acanthamoeba organism is motile and has spinelike pseudopods,a single round nucleus in the cyst form,and a large karyosome in the nucleus of the troph.An estimated 70% of clinical cases of Acanthamoeba keratitis are misdiagnosed as __________ keratitis.

Tissues suspected of containing Acanthamoeba cysts can be observed using various stains.A cyst that stains black has most likely been stained with the __________ stain.

Laboratory diagnosis of T.gondii is confirmed by:

Match the infectious stage of T.gondii with the appropriate description. -Tachyzoites

Primates,as well as dogs,sheep,and horses,have died of central nervous system (CNS)infections with which organism?

A 26-year-old woman has an odorous vaginal discharge,lower abdominal pain,and difficulty urinating.Vaginal secretions are collected and sent to the laboratory for examination 3 hours after collection.No motile organisms are observed on the wet preparation;however,T.vaginalis is suspected.Which one of the following statements explains this discrepancy?

Trichomoniasis is the primary nonviral sexually transmitted disease worldwide.One complication of this infection is:

Match the infectious stage of T.gondii with the appropriate description. -Bradyzoites

A 15-year-old male was diving in a lake when he inhaled some of the stagnate water.Five days later he was admitted to the hospital,comatose,and in critical condition.A cerebrospinal fluid (CSF)specimen was taken,and several motile amoebae were observed.The patient would most likely be diagnosed with which of the following conditions?