T1: ANTIBACTERIAL DRUGS CONTINUATION Flashcards
First discovered in seawater-fungus called cephalosporium acremonium
CEPHALOSPORINS
Are bacteriocidal and act by attaching to penicillin binding proteins to inhibit bacterial cell wall synthesis
CEPHALOSPORINS
Have a beta lactam ring that is mostly responsible for their antimicrobial activity
CEPHALOSPORINS
The primary therapeutic use as a class is for gram negative infection and the clients who cant tolerate the less expensive penicillin
CEPHALOSPORINS
Effective against gram positive and gram negative bacteria and resistant to beta lactamase (an enzyme that acts against the beta lactam structure of penicillin)
CEPHALOSPORINS
Cause bacteria cell lysis and bacterial cell dies
CEPHALOSPORINS
Therapeutic Indication
1. respiratory tract (strep pneumonia)
2. otitis media and
3. skin infection
1ST GENERATION CEPHALOSPORINS
- Cephalexin (Keflex)
- Cefazolin sodium ( Ancef, kefzol)
- Cefadroxil (duricef)
- Cephapirin(cefadyl)
1ST GEN CEPHALOSPORINS DRUG EXAMPLES
More potent, more resistant to beta lactamase, and exhibit a broader spectrum against gram negative organisms (Haemophilus influenza, Neisseria gonorrhea, Neisseria meningitidis and several anaerobic organisms) than the first generation drugs.
2ND GENERATION CEPHALOSPORINS
Less effective against gram positive bacteria
2ND GENERATION CEPHALOSPORINS
- Cefaclor ( ceclor),
- Cefuroxime (ceftin, kefurox, zinacef)
- Cefmetazole(Zefazone).
2ND GEN CEPHALOSPORINS DRUG EXAMPLES
Have a longer duration of action than 2nd generation agents
3RD GENERATION CEPHALOSPORINS
Broader spectrum against gram negative organisms, and are resistant to beta lactamase
3RD GENERATION CEPHALOSPORINS
Sometimes the drug of choice against infection by pseudomonas, klebsiella, neisseria, proteus, and haemophilus influenza
Less effective against gram positive bacteria
3RD GENERATION CEPHALOSPORINS
- Cefixime( suprax)
- Cefdinir (Omnicef)
- Ceftriaxone(rocephine)
- Cefotaxime (claforan)
3RD GEN CEPHALOSPORINS DRUG EXAMPLES
Effective against organisms that have developed resistance to earlier cephalosporins.
4TH GENERATION CEPHALOSPORINS
are capable of entering the cerebrospinal fluid (CSF) to treat CNS infections
3rd and 4th generation CEPHALOSPHORINS agents
Effective against E.coli, klebsiella, Proteus, streptococci, certain staphylococci, Psuedomonas aeruginosa
4TH GENERATION CEPHALOSPORINS
Cefepime ( Maxipime)
4TH GEN CEPHALOSPORINS DRUG EXAMPLES
monitor:
1. I/O
2. blood urea nitrogen (BUN)
3. serum creatinine
Cefepime ( Maxipime) NURSING INTERVENTION
Gl SYSTEM
1. nausea
2. vomiting
3. diarrhea
4. anorexia
5. abdominal pain,
6. flatulence
CEPHALOSPORINS SIDE EFFECTS AND ADVERSE REAX
CNS
1. headache
2. dizziness
3. lethargy
4. paresthesia (abn sensation of skin such as burning, tingling, prickling)
CEPHALOSPORINS SIDE EFFECTS AND ADVERSE REAX
RENAL SYSTEM - Nephrotoxicity (most common kidney problem when body or kidney is exposed to drug/toxins) in individuals with existing renal disease
CEPHALOSPORINS SIDE EFFECTS AND ADVERSE REAX
Fatigue, pruritus, pain on the injection site.
CEPHALOSPORINS SIDE EFFECTS AND ADVERSE REAX
- Psuedomembranous colitis
- nephrotoxicity,
- anaphylaxis
CEPHALOSPORINS SERIOUS ADVERSE REAX
CEPHALOSPORINS If taken with alcohol may result to
disulfiram (Antabuse)
- Severe vomiting
- weakness
- blurred vision
- profound hypotension
- nausea
- flushing
- dizziness
- headache
DISULFIRAM (Antabuse) SYMPTOMS
a drug that causes an adverse reaction to alcohol
Disulfiram like drug
- C/S should be done before the therapy
- Assess for the presence or history of bleeding disorders because cephalosporins may reduce prothrombin levels through interference with vitamin K metabolism
- Assess the renal and hepatic function, because most cephalosporins are eliminated by the kidney, and liver function is important in vit.K production
- Use with caution on clients with penicillin allergy
- Use with caution in pregnant or lactating because the drug can be transfer to the fetus
CEPHALOSPORINS NURSING INERVENTIONS
- Avoid alcohol use
- Eat cultured dairy products to help discourage superinfection like yogurt, kefir
- May cause false positive urine glucose test
- Keep drugs out of reach of small children
- Use childproof containers
- Report signs of superinfection- mouth ulcers, discharge from genital or anal area
- Ingest buttermilk or yoghurt to prevent superinfection of intestinal flora
- Take complete course of medication even if infection have ceased
- Observe for hypersensitivity reaction
CEPHALOSPORINS CLIENT TEACHINGS
Acts by inhibiting bacterial protein synthesis, by binding to the bacterial ribosome and have a bacteriostatic effect
TETRACYCLINES
Is isolated from streptomyces aureofaciens in 1948
TETRACYCLINES
The first broad spectrum antibiotics effective against gram positive and gram negative bacteria and many other organisms - mycobacteria, rickettsiae, spirochetes and clamydiae
TETRACYCLINES
- Demeclocycline(Dectomvcin)
- Doxycycline(Vibramycin,others)
- Minocycline (Minocin)
- Methacycline (Rondomycin)
- Tetracycline (Achromycin,others)
- Tigecycline(Tygacil)
TETRACYCLINES DRUG EXAMPLES
- Rocky mountain spotted fever
- Typhus
- Cholera
- Lyme disease
- Peptic ulcers
- Chlamydial infections
TETRACYCLINES THERAPEUTIC EFFECTS
bacterial disease spread through bite of infected tick
Rocky mountain spotted fever
spread to humans by flies, lice
TYPHUS
severe diarrheal illness caused by vibrio cholerae bacteria which infects the intestines.
CHOLERA
caused by bacterium borella; bc of black-legged tick.
LYME DISEASE
caused by helicobacter pylori
PEPTIC ULCER