First Aid USMLE
Liberty University
All 2 results
Sort by
-
USMLE FULL SOLUTION PACK STEP 1 AND STEP 2 Bundled exams with complete solution.
- Package deal • 11 items • 2023
-
- $35.49
- + learn more
A 73-year-old man comes to the office with fatigue that has become progressively
worse over the last several months. He is also short of breath when he walks up one
flight of stairs. He drinks 4 vodka martinis a day. He complains of numbness and tingling
in his feet. On physical examination he has decreased sensation of his feet. His
hematocrit is
-
First Aid USMLE Step 1: Pharmacology (Complete)
- Exam (elaborations) • 138 pages • 2023
- Available in package deal
-
- $18.49
- + learn more
Penicillin G (IV and IM) 
Penicillin M (oral) Correct Answer: *MOA:* 
*β-lactam*: a structural analog of D-ala-D-ala (a normal component of cell walls) which binds and inactivates bacterial transpeptidases (penicillin-binding protein, PBPs) to block peptidoglycan cross linking 
 
*Clinical use:* 
Bactericidal for Gram-⊕ cocci/rods, Gram-⊖ cocci (Neisseria), and spirochetes 
 
Mostly used for Gram-⊕ organisms (S. pneumoniae, S. pyogenes, Actinomyces). Also used for Gram-⊖ cocci (mainly...
Make study stress less painful
Study stress? For sellers on Stuvia, these are actually golden times. KA-CHING! Earn from your study resources too and start uploading now. Discover all about earning on Stuvia