Antibiotics Flashcards
Aerobic
need oxygen to survive
anaerobic
do not need oxygen
anti bacterial
active against bacteria
bacterial resistant
ability to produce substances that inactivate or destroy the impact of a drug
bacteriostatic
Drugs that slow or retard the multiplication of bacteria
cross sensitive
allergy to drugs in the same or related group
Broad spectrum
drugs effective of gram negative and gram positive bacteria
normal flora
non pathogenic microorganism within or on the body
super infection
an overgrowth of bacteria or fungal microorganism not affected by the antibiotic being used for treatment
The effectiveness of individual antibiotics depend on these 3 factors
The location of the infection
ability of the antibiotic to reach the site of infection
ability of the bacteria to resist or inactivate the drug
Sulfonamides Action
Slows the multiplication enough that bodys immune system is able to rid the bacteria
Sulfonamides
Adverse reactions
Decrease in WBC, Platelets and RBC
Photosensitivity(easy burned)
Anorexia
Stephens Johnsons syndrome
Sulfonamides should be used cautiously for g6pd pts because it can cause what condition?
Hemolysis ( Dose Related)
using Sulfonamides you should consider what other allergy?
Sulphur allergies
Examples of other drugs containing sulfonamide chemical group?
Celecoxib
Glyburide
Furosemide
Acetazolamide
Sulfonamides Contraindications
Do not use near end of pregnancy( can cause significant blood levels)
Use with caution with asthma patients
Sulfonamides example
Trimethoprim/Sulfamethoxazole(bactrim)
Silver sulfadiazine (Silvadene TOPICAL)
Sulfonamides uses
urinary track infections, MRSA and burns
Penicillins Actions
Prevents bacteria from using a substance that is necessary for the maintenance of the bacteria’s outer wall
Penicillins use
UTI Gonorrhea Pneumonia otitis media sinusitis strep tonsillitis meningitis abdominal infections
Penicillins Contraindications
Hypersensitivity to PCN and Cephalosporin meds
Penicillins adverse reactions
Mild nausea, vomiting, diarrhea, sore tongue, or mouth
PNC Ecamples
Pen VK
Amoxicillin
Amoxicillin/clavulanate (augmentin)
Cephalosporines Action
Affect the bacterial cell wall (similar to PNC)
Cephalosporines USE
infections caused by Strep, staph, Citrobacter, gonocci, Chigella, Clostridia
Cephalospines adverse reactions
GI disturbances like nvd
Cephalosporines contraindication
allergy to cephalosporin or PNC
Cephalosprines 1st gen examples
Cephalexin(keflex)
Cefazolin(ancef)
Cephalosprines 2nd gen examples
Cefaclor
Cefprozil
Cefoxitin
Cephalosprines 3rd gen example
Ceftriaxone (Rocephrin)
Tetracyclines action
Inhibit bacterial protein synthesis necessary for reproduction
Tetracycline uses
Treatment of rickettsia(RMSF, Typhus and Tick Fever)
Skin and soft tissue infections when PCN is contraindicated
Tetracycline adverse reactions
Upset Gastrointestinal tracks, Photosensitivity
Can cause permanent discoloration to the teeth for children under 9.
Tetracycline contraindication
Pregnancy class D
Tetracycline Example
Doxycycline
Macrolides Action
Bind to cell membrane and causes changes in protein synthesis
Macrolides uses
Community acquired pneumonia
H Pylori
Alternative to PCN for strep throat
What do you combine to treat H Pylori
Clarithromycin with amoxicillin and a PPI
Macrolides adverse reactions
GI upset
Macrolides contraindication
Liver disease
Macrolides example
Azithromycin (ZPAK)
Erythromcin (Eye ointment)
Clarithromycin
Fluoroquinolones Action
interfere with an enzyme needed by bacteria for synthesis of dna. Prevents cell reproduction leading to death.
Fluoroquinolones USE
LRI
Atypical pneumonia
std
uti
Fluoroquinolones Adverse reactions
Super infections
Pain inflamation and rupture of tendona
Photosensitive
Colitis
Fluoroquinolones Contraindications
Children younger than 18
Pregnancy cat C
History of seizures
Fluoroquinolones Examples
Ciprfloxacin : Cipro
Levofloxacin: Levaquin
na
na
Aminoglycosides use
Primary gram negative
GI Infections
Aminoglycosides Adverse reactions
nephrotocicity
ototoxicity
neurotoxicity
Aminoglycosides Contraindications
Long term therapy
pre existing hearing loss
During lactation
Pregnancy Cat D
Aminoglycosides Examples
Gentamicin
Neomycin
Carbapenems Action
Inhibits cell wall synthsis by binding to penicillin binding proteins which inhibit final step in cell wall synthesis
Aminoglycosides Use
Severe drug resistan infections
Hospital acquired pneumonia , Prosthetic joint infections, necrotizing soft tissue infection and pyelonephritis
Aminoglycosides adverse reactions
Seizuere, renal failure or C diff
Aminoglycosides Contraindications
Seizure disorder
Stevens- Johnsons disorder
Renal Impairment
Aminoglycosides Examples
Ertapenem
Lincosamide action
Decrease adherence of bacteria to host cell by disrupting protein synthesis and changing cell wall surface
Lincomycin Example
Clindamycin
Amebacide, Antiprotozoal, Nitoimidazole Example
Metronidazole