Micro 2110 Cell envelopes Mini HMwK #3 Worth 3.5 pts Due: Wednesday Jan 31st Nam

Question

Micro 2110 Cell envelopes Mini HMwK #3 Worth 3.5 pts Due: Wednesday Jan 31st Name: Case Study: Pink eye A 15 month old girl presents at your clinic with a swollen left eyelid that is stuck to the bottom lid by a thick crusty. yellow- brown discharge. Her eyes are watery and when you open the eye you can see redness throughout the conjunctiva. She presents with a runny nose but with clear ears, good oxygen and a strong pulse. You suspect she has conjunctivitis- inflammation of the conjunctiva layer of the eye, more commonly referred to as pink eye As a nurse you know that conjunctivitis describes inflammation that can be caused by any number of microbes (as well as other items such as allergies) including infections with bacterial organisms including Staphylococcus aureus, Haemophilus influenzoe type 8 (its most common couse- see your Tortura Micro textbook page 609), Pseudomonas auriginosa, as well as the STDs Chlamydlia trachomatis and Nisseria gonorrhea. It can also be commonly coused by viruses such as: adenovirus (cold viruses- the most common) and Herpes. Becouse your patient has significant yellowish-green discharge and eyelid swelling you suspect the culprit is bacterial Q1.) In this case are antibiotics and appropriate treatment? Why or why not? Explain your rationale based on microbe structures (0.5 pts) In your micro class you prior to nursing school you remember learning that many bacteria can be classified by their cell wall into two major categories: Gram positive and Gram negative. Q2.) Which of these categories has a larger cell wall? Which has more membranes? (0.5 pts)

Explanation / Answer

1. Yes. The antibiotics are the appropriate treatment for the disease pink eye because the infection is detected as a bacterial infection which is caused by different bacteria such as Staphyllococcus aureus, H. influenza, P. aeruginosa, C. trachomatis, and N. gonorrhoea.

3. The bacteria which are listed above are Gram negative except Staphylococcus aureus which is Gram positive.

4. The polymyxins are antibiotics. Polymyxins B and E are used in the treatment of Gram negative bacterial infections. Thus, this infection is mostly caused by Gram negative bacteria so, it can be treated well by polymyxins.

5.The bacteria produces antibiotics that are chemicals that kill or inhibit the growth of bacteria & are used to treat bacterial infections.The antibiotics are produced in nature by soil bacteria and fungi.

5. The bacteria which are present in the human cells or the host cells become resistant towards antibiotics so that it helps to limit its toxicity on human cells.

6.Nephrotoxicity is toxicity in the kidneys.it is a poisonous effect of some substances ,both toxic chemicals and medications,on renal function.

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