Mosby's 2014 Nursing Drug Reference (85 page)

TREATMENT OF ANAPHYLAXIS:

EPINEPHrine, antihistamines; resuscitate if needed

Canada only   Side effects:
italics
= common;
bold
= life-threatening   
Nurse Alert

CEPHALOSPORINS—
2ND GENERATION
cefaclor (Rx)

(sef′a-klor)

Ceclor, Raniclor

cefoTEtan (Rx)

(sef′oh-tee-tan)

Cefotan

cefOXitin (Rx)

(se-fox′i-tin)

Mefoxin

cefprozil (Rx)

(sef-proe′zill)

Cefzil

cefuroxime (Rx)

(sef-yoor-ox′eem)

Ceftin, Zinacef

Func. class.:
Antiinfective

Chem. class.:
Cephalosporin (2nd generation)

Do not confuse:
cefaclor
/cephalexin
Cefotan
/Ceftin
cefprozil
/ceFAZolin/cefuroxime
Cefzil
/Ceftin

ACTION:

Inhibits bacterial cell wall synthesis, renders cell wall osmotically unstable, leads to cell death by binding to cell wall membrane

USES:

cefaclor:
Gram-negative bacilli:
Haemophilus influenzae, Escherichia coli, Proteus mirabilis, Klebsiella;
gram-positive organisms:
Streptococcus pneumoniae, Streptococcus pyogenes, Staphylococcus aureus;
respiratory tract, urinary tract, skin, bone, joint infections; otitis media

cefoTEtan:
Gram-negative organisms:
Haemophilus influenzae, Escherichia coli, Enterobacter aerogenes, Proteus mirabilis, Klebsiella, Citrobacter, Salmonella, Shigella, Acinetobacter, Bacteroides fragilis, Neisseria, Serratia;
gram-positive organisms:
Streptococcus pneumoniae, Streptococcus pyogenes, Staphylococcus aureus;
upper and lower, serious respiratory tract, urinary tract, skin, bone, joint, gynecologic, gonococcal, intraabdominal infections

cefOXitin:
Gram-negative bacilli:
Haemophilus influenzae, Escherichia coli, Proteus, Klebsiella, Bacteroides fragilis, Neisseria gonorrhoeae;
gram-positive organisms:
Streptococcus pneumoniae, Streptococcus pyogenes, Staphylococcus aureus;
anaerobes including
Clostridium;
lower respiratory tract, urinary tract, skin, bone, gynecologic, gonococcal infections; septicemia, peritonitis

cefprozil:
Pharyngitis/tonsillitis; otitis media; secondary bacterial infection of acute bronchitis; acute bacterial exacerbation of chronic bronchitis; uncomplicated skin and skin-structure infections; acute sinusitis

cefuroxime:
Gram-negative bacilli:
Haemophilus influenzae, Escherichia coli, Neisseria, Proteus mirabilis, Klebsiella;
gram-positive organisms:
Streptococcus pneumoniae, Streptococcus pyogenes, Staphylococcus aureus;
serious lower respiratory tract, urinary tract, skin, bone, joint, gonococcal infections; septicemia, meningitis

CONTRAINDICATIONS:

Hypersensitivity to cephalosporins or related antibiotics; seizures

Precautions:
Pregnancy (B), breastfeeding, children, GI/renal disease

DOSAGE AND ROUTES
Calculator
cefaclor

• Adult:
PO
250-500 mg q8hr, max 4 g/day

• Child >1 mo:
PO
20-40 mg/kg/day in divided doses q8hr or total daily dose may be divided and given q12hr, max 1 g/day

Available forms:
Caps 250, 500 mg; oral susp 125, 187, 250, 375 mg/5 ml; chew tabs (Raniclor) 250, 375 mg

cefoTEtan

• Adult:
IM/IV
1-2 g q12hr × 5-10 days

Renal dose

• Adult:
IM/IV
CCr 10-30 ml/min, give dose q24hr or 1/2 dose q12hr; CCr <10 ml/min, give dose q48hr or 1/2 dose q24hr

Perioperative prophylaxis

• Adult:
IV
1-2 g 1/2-1 hr before surgery

Available forms:
Inj 1, 2, 10 g

cefOXitin

• Adult:
IM/IV
1-2 g q6-8hr

Renal dose

• Adult:
IM/IV
after loading dose, CCr 30-50 ml/min, 1-2 g q8-12hr; CCr 10-29 ml/min, 1-2 g q12-24hr; CCr <10 ml/min, 0.5-1 g q12-24hr

Uncomplicated gonorrhea (outpatient)

• Adult/adolescent/child ≥45 kg:
IM
2 g as single dose with 1 g
PO
probenecid at same time

Severe infections

• Adult:
IM/IV
2 g q4hr

• Child ≥3 mo:
IM/IV
80-160 mg/kg/day divided q4-6hr; max 12 g/day

Available forms:
Powder for inj 1, 2, 10 g

cefprozil
Renal dose

• 
CCr <30 ml/min, 50% of dose

Upper respiratory infections

• Adult:
PO
500 mg q24hr × 10 days

Otitis media

• Child 6 mo-12 yr:
PO
15 mg/kg q12hr × 10 days

Lower respiratory infections

• Adult:
PO
500 mg q12hr × 10 days

Skin/skin-structure infections

• Adult:
PO
250-500 mg q12hr × 10 days

Available forms:
Tabs 250, 500 mg; susp 125, 250 mg/5 ml

cefuroxime

• Adult and child:
PO
250 mg q12hr; may increase to 500 mg q12hr for serious infections

• Adult:
IM/IV
750 mg-1.5 g q8hr for 5-10 days

Urinary tract infections

• Adult:
PO
125 mg q12hr; may increase to 250 mg q12hr if needed

Otitis media

• Child <2 yr:
PO
125 mg bid

• Child >2 yr:
PO
250 mg bid

Surgical prophylaxis

• Adult:
IV
1.5 g 1/2-1 hr before surgery

Severe infections

• Adult:
IM/IV
1.5 g q6hr; may give up to 3 g q8hr for bacterial meningitis

• Child >3 mo:
IM/IV
50-100 mg/kg/day or IM in divided doses q6-8hr

Uncomplicated gonorrhea

• Adult:
IM
1.5 g as single dose in 2 separate sites with oral probenecid

Renal dose

• 
Dosage reduction indicated with severe renal impairment (CCr <20 ml/min)

Available forms:
Tabs 125, 250, 500 mg; inj 150, 750 mg, 1.5, 7.5 g; inj 750 mg; 1.5 g powder; susp 125, 250 mg/5 ml

Administer:

• 
Do not break, crush, or chew ext rel tabs or caps

• 
On an empty stomach 1 hr before or 2 hr after a meal

cefaclor

• 
Shake susp, refrigerate, discard after 2 wk

• 
For 10-14 days to ensure organism death, prevent superinfection

• 
With food if needed for GI symptoms

• 
After C&S completed

cefoTEtan

• 
IV direct after diluting 1 g/10 ml sterile water for inj, give over 3-5 min; may be diluted further with 50-100 ml NS or D
5
W; shake; run over 1/2-1 hr by
Y
-tube or 3-way stopcock; discontinue primary inf during administration

• 
May be stored 96 hr refrigerated or 24 hr at room temp

Y-site compatibilities:
Allopurinol, amifostine, aztreonam, diltiazem, famotidine, filgrastim, fluconazole, fludarabine, heparin, insulin (regular), melphalan, meperidine, morphine, PACLitaxel, remifentanil, sargramostim, tacrolimus, teniposide, theophylline, thiotepa

cefOXitin
IV route

• 
After diluting 1 g or less/10 ml or more D
5
W, NS and give over 3-5 min; may be diluted further with 50-100 ml NS or D
5
W; run over 1/2-1 hr by
Y
-tube or 3-way stopcock; discontinue primary inf during administration; give by cont inf at prescribed rate; may store 96 hr refrigerated or 24 hr at room temp

• 
For 10-14 days to ensure organism death, prevent superinfection

• 
After C&S completed

Syringe compatibilities:
Heparin, insulin

Y-site compatibilities:
Acyclovir, amifostine, amphotericin B cholesteryl sulfate complex, aztreonam, cyclophosphamide, diltiazem, DOXOrubicin liposome, famotidine, fluconazole, foscarnet, HYDROmorphone, magnesium sulfate, meperidine, morphine, ondansetron, perphenazine, remifentanil, teniposide, thiotepa

cefprozil

• 
For 10-14 days to ensure organism death, prevent superinfection

• 
After C&S

• 
Refrigerate/shake susp before use

cefuroxime

• 
For 10-14 days to ensure organism death, prevent superinfection

• 
With food if needed for GI symptoms

• 
After C&S obtained

Y-site compatibilities:
Acyclovir, allopurinol, amifostine, atracurium, aztreonam, cyclophosphamide, diltiazem, famotidine, fludarabine, foscarnet, HYDROmorphone, melphalan, meperidine, morphine, ondansetron, pancuronium, perphenazine, remifentanil, sargramostim, tacrolimus, teniposide, thiotepa, vecuronium

SIDE EFFECTS

CNS:
Dizziness, headache, fatigue, paresthesia, fever, chills, confusion

GI:
Diarrhea
, nausea, vomiting, anorexia, dysgeusia, glossitis, bleeding; increased AST, ALT, bilirubin, LDH, alk phos; abdominal pain, loose stools, flatulence, heartburn, stomach cramps, colitis, jaundice,
pseudomembranous colitis

GU:
Vaginitis, pruritus, candidiasis, increased BUN,
nephrotoxicity, renal failure,
pyuria, dysuria, reversible interstitial nephritis

HEMA:
Leukopenia, thrombocytopenia, agranulocytosis,
anemia,
neutropenia, lymphocytosis, eosinophilia, pancytopenia, hemolytic anemia, leukocytosis, granulocytopenia

INTEG:
Rash, urticaria, dermatitis,
Stevens-Johnson syndrome

RESP:
Dyspnea

SYST:
Anaphylaxis,
serum sickness,
superinfection

PHARMACOKINETICS
cefaclor

PO:
Peak 1/2-1 hr, half-life 36-54 min, 25% bound by plasma proteins, 60%-85% eliminated unchanged in urine in 8 hr, crosses placenta, excreted in breast milk (low concentrations)

cefoTEtan

IM/IV:
Peak 1½-3 hr, half-life 3-5 hr, 75%-90% bound by plasma proteins, 50%-80% eliminated unchanged in urine, crosses placenta, excreted in breast milk

cefOXitin

Half-life 0.75-1 hr; 65%-80% bound by plasma proteins; 90%-100% eliminated
unchanged in urine; crosses placenta, blood-brain barrier; eliminated in breast milk; not metabolize

IM:
Peak 15-60 min

IV:
Peak 3 min

cefprozil

PO:
Peak 1.5 hr, protein binding 36%, elimination half-life 1.3 hr (normal renal function), 2 hr (hepatic disease), 5½-6 hr (end-stage renal disease), extensively metabolized to an active metabolite, eliminated in urine 60%

cefuroxime

Peak PO 2 hr, IM 45 min, IV 2-3 min, 66% excreted unchanged in urine, half-life 1-2 hr in normal renal functio

INTERACTIONS

Increase:
effect/toxicity—aminoglycosides, furosemide, probenecid

Increase:
bleeding risk (cefotetan)—anticoagulants, thrombolytics, NSAIDs, antiplatelets, plicamycin, valproic acid

Decrease:
absorption of cephalosporin —antacids

Decrease:
effect of cephalosporin—H
2
-blockers

Drug/Lab Test

False increase:
creatinine (serum urine), urinary 17-KS

False positive:
urinary protein, direct Coombs’ test, urine glucose testing (Clinitest)

Interference:
cross-matching

NURSING CONSIDERATIONS
Assess:

 
Nephrotoxicity:
increased BUN, creatinine

• 
I&O ratio

• 
Blood studies: AST, ALT, CBC, Hct, bilirubin, LDH, alk phos, Coombs’ test monthly if patient is on long-term therapy

• 
Electrolytes: potassium, sodium, chlorine monthly if patient is on long-term therapy

• 
Bowel pattern daily; if severe diarrhea occurs, product should be discontinued; may indicate pseudomembranous colitis

• 
Urine output; if decreasing, notify prescriber (may indicate nephrotoxicity)

 
Anaphylaxis:
rash, flushing, urticaria, pruritus, dyspnea; discontinue product, notify prescriber, have emergency equipment available

• 
Bleeding:
ecchymosis, bleeding gums, hematuria, stool guaiac daily

 
Overgrowth of infection:
perineal itching, fever, malaise, redness, pain, swelling, drainage, rash, diarrhea, change in cough, sputum

Evaluate:

• 
Therapeutic response: negative C&S

Teach patient/family:

• 
If diabetic, to use blood glucose testing

• 
To complete full course of product therapy; to report persistent diarrhea

• 
To use yogurt, buttermilk to maintain intestinal flora, decrease diarrhea

• 
To notify prescriber if breastfeeding or of any side effects

 
To report sore throat, bruising, bleeding, joint pain (may indicate blood dyscrasias [rare]); diarrhea with mucus, blood (pseudomembranous colitis)

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