A 63-year-old asymptomatic female’s clean-catch midstream urine was inoculated onto sheep blood agar with a 1µl inoculating loop. It was also plated onto CNA and MacConkey agar. After 24 hours incubation, there were 185 colonies counted on the sheep blood agar. The colonies were white, creamy, nonhemolytic colonies on sheep blood agar and CNA. There was no growth on the MacConkey agar plate. Based on the attached chart, this specimen represents: Specimen Source Colony Count/ml (Pure Culture) Interpretation Suprapubic aspiration Gram negative bacilli; any number >99% probability of infection   Gram positive bacilli; >103 >99% probability of infection Catheterization >105 >99% probability of infection   104-105 Suggestive infection   103-104 Likely infection   105 >99% probability of infection Clean voided (female) >105 80% probability of infection   104-105 Indeterminate; treat as infection if pt is symptomatic

Exam 1 Equations.pdf  

The direct Gram stain of spinal fluid of a 5-week-old male shows gram positive cocci in chains and many neutrophils. Which of the following is the best combination for primary plating of this specimen?

Which of the following are phenotypical characteristics used for classifying bacteria?

Testing of a wound culture on the hand of a pet store owner reveals a Gram positive coccobacilli isolate that is catalase positive, oxidase negative, bile esculin positive, and H2S negative.  A co-worker suggests that considering the patient’s occupation, this organism should be worked up as an Erysipelothrix. You disagree because:

A vaginal specimen from a 27-year-old female is plated onto sheep blood agar, MacConkey agar and CNA. Cream to golden-colored colonies that are narrowly beta hemolytic are observed on the blood agar and CNA. This specimen contains:

Which of the following Groups of streptococci are beta hemolytic?

The spinal fluid of a newborn is received in the laboratory. The mother had received limited prenatal care, works at a pet store and has been suffering from gastroenteritis for the past ten days. The Gram stain of the spinal fluid shows the presence of tiny Gram positive diphtheroid along with neutrophils. The specimen is plated onto sheep blood agar, chocolate agar and MacConkey agar. You would expect it to grow on:

The first certification exam for surgical technology was conducted when?

A recent ST graduate is working on Continuing Education Units (CEUs) through an organization that represents Surgical Technology. What organization is the ST using to receive these CEUs from?