Infections Flashcards
Cell Wall Destruction (Rx)
Penicillins
Cephalosporins
Cell Membrane (Rx)
Polymyxins
Most antifungals
Essential Nutrients (Rx)
Sulfonamides
Antifolates
Protein Synthesis
Aminoglycosides
Tetracyclines
DNA Synthesis
Quinolones
Antineoplastics
Resistance : Intrinsic
innately resistant to begin with
Resistance: Acquired
resistant from survival of fitest
DNA types (4)
mutation
transduction - bacteriophage
transformation - bacteria engulfes the bad
conjugation - two different organisms build bridge and transfer dna to eachother
Resistance Vocabulary (Transport)
Can’t get drug into the cell
Resistance Vocabulary (Biotransformation)
needs to get activated once inside cell and can’t
Resistance Vocabulary (Binding affinity)
drug has to bind to the active site
Resistance Vocabulary (Non-specific binding)
too many sites to bind to that aren’t the target site.
BAD
Better
Best
(combination terms)
Antagonist (S+C)
Additive (S+S)
Synergistic (C+C)
Static vs Cidal (Rx)
S: Tetracyclines, Chloramphenicol, Erythromycin
C: Penicillin, Cephalosporins, Aminoglycosides
Hx: Ehrlich
Selective toxicity based on different chemoreceptors
Hx: Fleming & Florey
Mold (fungus) contamination of Staph plate inhibited growth of Staph. Partial purification of penicillin from mold
Hx: Dubois
Isolation of microorganisms from the soil that were capable of killing bacteria. Streptomycin first, then erythromycin, tetracycline,
chloramphenicol, polymyxin
Hx: Brotzu
Isolated a fungus from sewage outlet into sea water. Competitive environment. Cephalosporin extracted from fungus
Sulfonamides (uses)
UTI
Ear infections
Prostatitis
Penicillins (Rx staph & strep)
Penicillin V
Methicillin
Penicillins (Rx, gram (-) coverage)
extension coverage
Amoxicillin
Ampicillin
Piperacillin
All combined with Beta Lactamase inhibitor so it doesn’t deactivate the penicillin ring.
Cephalosporins (uses)
Most commonly prescribed for infections,
Most commonly used surgical prophylaxis
Similar MOA as PCN
Cephalosporins (Generations & Rx)
1st Cefazolin - surgical proph. 2nd Cefaclor - influenzae 3rd Ceftriaxone - Gonorrhea Cefixime - Resp Strep 4th Cefepime - Pseudomonas
Carbapenems (uses)
Broad spectrum
Very good when PCN allergy is around and Zosyn can’t be used.
Carbapenems (Rx)
Meropenem
Imipenem
Aztreonam
Vancomycin
( - OR + )
(Administration)
Gram +
Redman syndrome
Shock possible \BP with anesthesia.
Bacitracin
- OR +
gram +
Topical
Polymyxin B
(Use)
(Administration)
Gram - topical
NMB potentiated with IV doses
Aminoglycosides
(MOA)
(Side E.)
Ribosomal 30s
Kidney and Eye toxic
Aminoglycosides
Rx
Gentamicin (broad)
Tobramycin (Pseudomonas)
Tetracyclines
(MOA)
(Side E.)
Ribosomal 30s
Photosensitivity
Minocycline
Doxycycline
Tigecycline (use)
Broad coverage when PCN allergy
Erythromycin
Macrolide 50s
Clarithromycin
Macrolide 50s
Clindamycin
Macrolide 50s
Linezolid
Macrolide 50s
Macrolies
Side E.
QT prolonged
C.Diff (Clinda)
Polymyxins
Caution
prolongs NMB
Quinolones
(MOA)
(use)
-xacin
Holds DNA in tight coil
UTI’s
Cipro:
Pseudomonas
Anthrax
Quinolones
Side E.
QT Prolonged
Metronidazole
Uses
anaerobics
metallic taste and furry tounge
Nystatin
Antifungal
topical
Amphotericin
Antifungal
systemic (sedate for side effects: chills fever H/A)
Ketoconazole
Antifungal
oral
Fluconazol
Antifungal
oral / IV
Itraconazole
Antifungal
oral
Griseofulvin
Antifungal
Mitotic spindle (microtubules)
Terbinafine
Antifungal
Skin (ringworm, nails, ect)
Antifungals
Anesthesia
LA’s potentiates growth inhibitory effects
Iododeoxyuridine
Antiviral
Topical
Herpes
Interferon
Antiviral
Hepatitis
Acyclovir
Antiviral
Herpes
Toxic (anorexia, Nausea H/A rash)
Ganciclovir
Antiviral
Cytomegalovirus
Saquinavir
Antiviral
Amantadine
Antiviral
Toxic (CNS dizzy)
Ribavirin
Antiviral
Resp Syncytial virus in kids RSV
Oseltamavir
Antiviral
Tamiflu
AZT
Norvir
Efavirenz
HIV
Antiretrovirals
Isoniazid
AntiTB
Rifampin
AntiTB
RNA polymerase
Ethambutol
AntiTB
arabinogalactan (cell wall stuff)
Pyrazinamide
AntiTB
Chloroquine
Antimalarials
Primaquine
Antimalarials
Pyrimethamine
Antimalarials