Antibiotics for Skin Infections

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Questions and Answers

Which organisms are commonly associated with infected ulcers that have been previously treated with antibiotics?

  • Clostridium perfringens, E.coli, Streptococcus pneumoniae
  • S.aureus, beta-hemolytic streptococci, Enterobacteriaceae (correct)
  • Staphylococcus epidermidis, Enterococcus, Pseudomonas
  • Fusobacterium, Streptococcus agalactiae, Neisseria

What imaging technique is recommended for the detection of soft-tissue lesions and osteomyelitis?

  • X-ray
  • MRI (correct)
  • CT scan
  • Ultrasound

What factors influence the duration of treatment for diabetic foot infections?

  • Type of antibiotics used and duration of wound care
  • Presence of comorbid conditions and patient adherence
  • Initial infection severity and patient age
  • Presence of adequate blood supply and osteomyelitis (correct)

What is the best approach to confirm a diagnosis of deep foot-space infection?

<p>Careful probing of the ulcer floor and considering imaging (A)</p> Signup and view all the answers

What characteristic of discharge is indicative of the presence of anaerobes in diabetic foot infections?

<p>Foul-smelling or putrid discharge (B)</p> Signup and view all the answers

What is the appropriate treatment for a patient with a severe penicillin allergy who may have cellulitis caused by MRSA?

<p>Ciprofloxacin + Clindamycin OR Aztreonam + Clindamycin (C)</p> Signup and view all the answers

Which of the following statements regarding the treatment of cellulitis is accurate?

<p>Elevating the affected extremity is essential in managing cellulitis. (D)</p> Signup and view all the answers

What should be considered for a patient presenting with bullae and ulcers after exposure to seawater?

<p>Infection by Vibrio vulnificus. (C)</p> Signup and view all the answers

Which treatment is recommended for dog or cat bites when penicillin is contraindicated?

<p>Ciprofloxacin + Clindamycin. (D)</p> Signup and view all the answers

Which of the following statements about antibiotics used for cellulitis is incorrect?

<p>Daptomycin is effective against gram-negative organisms. (C)</p> Signup and view all the answers

What is the most common etiology of cellulitis with purulent drainage?

<p>S.aureus and group A streptococci (C)</p> Signup and view all the answers

Which of the following is an appropriate oral regimen for treating cellulitis?

<p>Doxycycline 100 mg PO BID plus Cephalexin 500 mg PO QID (C)</p> Signup and view all the answers

Which treatment is indicated for mild cellulitis?

<p>Oral Amoxicillin/clavulanate or Ciprofloxacin (D)</p> Signup and view all the answers

What is the main purpose of combining TMP/SMX with Amoxicillin in treating cellulitis?

<p>To improve effectiveness against group A streptococci (A)</p> Signup and view all the answers

When should surgical treatment be considered for an abscess?

<p>In cases of gangrene or severe systemic symptoms (C)</p> Signup and view all the answers

Which antibiotic is typically used for the treatment of moderate to severe cellulitis?

<p>Clindamycin 600 mg IV q8h (B)</p> Signup and view all the answers

What is the treatment recommendation for Impetigo?

<p>Warm water soak and oral therapy (A)</p> Signup and view all the answers

What would be a reason to choose oral therapy over IV therapy for cellulitis treatment?

<p>Patient shows improvement and has mild disease (B)</p> Signup and view all the answers

What is the preferred treatment for a patient with confirmed beta-hemolytic streptococci and no penicillin allergy?

<p>Penicillin G PLUS Clindamycin (C)</p> Signup and view all the answers

Which condition is characterized by the infection of the subcutaneous tissue leading to progressive destruction?

<p>Fasciitis (B)</p> Signup and view all the answers

Which type of necrotizing fasciitis is predominantly caused by Group A streptococci?

<p>Type 2 (B)</p> Signup and view all the answers

What is considered a typical risk factor for necrotizing fasciitis?

<p>Obesity (A)</p> Signup and view all the answers

What type of imaging can aid in the diagnosis of necrotizing fasciitis but should not replace surgical exploration if suspicion is high?

<p>CT scan (D)</p> Signup and view all the answers

Which antibiotic combination is recommended for a patient with penicillin allergy and suspected necrotizing fasciitis?

<p>Vancomycin PLUS Ciprofloxacin PLUS Clindamycin (C)</p> Signup and view all the answers

What is the most common organism responsible for Pyomyositis?

<p>Staphylococcus aureus (D)</p> Signup and view all the answers

Which clinical sign may indicate a higher suspicion for necrotizing fasciitis?

<p>Pain out of proportion to findings (A)</p> Signup and view all the answers

What is the primary treatment for a cutaneous abscess?

<p>Incision and drainage (C)</p> Signup and view all the answers

Which condition indicates the need for antimicrobial therapy in a patient with a cutaneous abscess?

<p>Diabetes or other immune suppression (C)</p> Signup and view all the answers

In patients with recurrent MRSA skin infections, what is the recommended approach to hygiene?

<p>Encourage personal and hand hygiene (A)</p> Signup and view all the answers

Which of the following best describes a mild diabetic foot infection?

<p>Purulence and signs of inflammation within 2 cm (D)</p> Signup and view all the answers

What is a recommended oral regimen for mild diabetic foot infections?

<p>Clindamycin 300 mg PO TID (D)</p> Signup and view all the answers

For moderate diabetic foot infections, which medication combination is appropriate?

<p>Ciprofloxacin plus Clindamycin (D)</p> Signup and view all the answers

What is the severity classification for a diabetic foot infection with systemic toxicity?

<p>Severe infection (C)</p> Signup and view all the answers

Which antibiotic regimen should be avoided in outpatients with diabetic foot infections?

<p>Ciprofloxacin 400 mg IV q12h (D)</p> Signup and view all the answers

What microbiological agent is primarily involved in cellulitis without an open wound?

<p>Beta-hemolytic streptococci (C)</p> Signup and view all the answers

What is the recommended antibiotic for patients not on broad-spectrum antibiotics at the time of surgery for surgical site infections following contaminated procedures?

<p>Ertapenem 1 g IV q24h (A)</p> Signup and view all the answers

Which combination of antibiotics is indicated for patients with hardware involvement and severe penicillin allergy?

<p>Vancomycin PLUS Ciprofloxacin PLUS Metronidazole (A)</p> Signup and view all the answers

Which organism is NOT typically associated with surgical site infections following clean procedures?

<p>Gram-negative rods (A)</p> Signup and view all the answers

In cases of surgical site infections with deep fascia involvement, what is the appropriate management?

<p>Immediate surgical intervention (C)</p> Signup and view all the answers

What is the preferred duration for IV administration of Cefazolin in procedures involving orthopedic joint replacements?

<p>q8h (A)</p> Signup and view all the answers

Which risk factor is NOT associated with increased risk for MRSA infection?

<p>History of total hip replacement surgery (B)</p> Signup and view all the answers

What is the treatment of choice for saphenous vein graft harvest site infections?

<p>Ertapenem 1 g IV q24h (B)</p> Signup and view all the answers

For surgical site infections in patients who are severely ill or on broad-spectrum antibiotics, what is the recommended antibiotic regimen?

<p>Piperacillin/tazobactam PLUS Vancomycin (C)</p> Signup and view all the answers

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