What type of organism would a Gram stain of the urine most likely show?

A Gram stain is most often used to find out if you have a bacterial infection. If you do, the test will show if your infection is Gram-positive or Gram-negative.

What does it mean if you are sensitive to an antibiotic?

Susceptible means they can’t grow if the drug is present. This means the antibiotic is effective against the bacteria. Resistant means the bacteria can grow even if the drug is present. This is a sign of an ineffective antibiotic.

What does gram-positive cocci mean in urine?

Gram-positive bacteria are a common cause of urinary tract infection (UTI), particularly among individuals who are elderly, pregnant, or who have other risk factors for UTI.

What are the best characteristics of an antibiotic to be used for antibiotic susceptibility test?

Susceptible — likely, but not guaranteed to inhibit the pathogenic microbe; may be an appropriate choice for treatment. Intermediate — may be effective at a higher dosage, or more frequent dosage, or effective only in specific body sites where the antibiotic penetrates to provide adequate concentrations.

Why is Gram staining important?

The main benefit of a gram stain is that it helps your doctor learn if you have a bacterial infection, and it determines what type of bacteria are causing it. This can help your doctor determine an effective treatment plan.

What does Gram staining tell us about bacteria?

Gram staining differentiates bacteria by the chemical and physical properties of their cell walls. Gram-positive cells have a thick layer of peptidoglycan in the cell wall that retains the primary stain, crystal violet. They are stained pink or red by the counterstain, commonly safranin or fuchsine.

How do you choose an antibiotic sensitivity?

The choice of antibiotic should be based on the MIC number, the site of infection, and an antibiotic’s breakpoint. Consider safety, ease of use, and cost when determining the optimum antibiotic.

Is Gram-positive cocci serious?

Gram-positive cocci: Staphylococcus aureus is a gram-positive, catalase-positive, coagulase-positive cocci in clusters. S. aureus can cause inflammatory diseases, including skin infections, pneumonia, endocarditis, septic arthritis, osteomyelitis, and abscesses.

How do you treat Gram-positive cocci in urine?

Using CLED agar provides advantages of growth-supports of most potential uropathogens including gram-positive cocci such as Staphylococcus aureus, Staphylococcus saprophyticus, and Enterococcus spp. In parallel, Mannitol Salt Agar (MSA) was inoculated for targeting gram-positive UTI growth.

What does sensitive mean in urine culture?

The antibiotic sensitivity or susceptibility test helps to select an appropriate antibiotic that is effective against specific types of bacteria or fungi causing any infection.

How do you know if your sensitive to antibiotics?

The test is done by taking a sample from the infected site. The most common types of tests are listed below. A health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial.