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1. What is the most common cause of cellulitis?
a) Staphylococcus aureus
b) Streptococcus pyogenes
c) Pseudomonas aeruginosa
d) Escherichia coli
Answer: b) Streptococcus pyogenes
Rationale: Cellulitis is a bacterial infection of the skin and subcutaneous
tissues, usually caused by streptococci or staphylococci. Streptococcus
pyogenes is the most common cause of cellulitis, especially in the lower
extremities.
2. Which of the following is a risk factor for developing IV infiltration?
a) Using a large-bore catheter
b) Inserting the catheter in an area of flexion
c) Securing the catheter with tape
d) Flushing the catheter with saline
Answer: b) Inserting the catheter in an area of flexion
Rationale: IV infiltration occurs when the IV fluid or medication leaks into the
surrounding tissue, causing swelling, pain, and tissue damage. Risk factors
for IV infiltration include using a small-bore catheter, inserting the catheter in
an area of flexion, such as the antecubital fossa, using an unstable vein, and
infusing vesicant or irritating solutions.
3. What is the hallmark sign of necrotizing fasciitis?
a) Fever and chills
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