Mosby's 2014 Nursing Drug Reference (394 page)

BOOK: Mosby's 2014 Nursing Drug Reference
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Canada only   Side effects:
italics
= common;
bold
= life-threatening   
Nurse Alert

ticlopidine (Rx)

(tye-cloe′pi-deen)

Func. class.:
Platelet aggregation inhibitor

Chem. class.:
Thienopyridine compound

ACTION:

Irreversible inhibition of platelet aggregation through antagonism of ADP

USES:

Reducing the risk for stroke in high-risk patients

Unlabeled uses:
Intermittent claudication, chronic arterial occlusion, subarachnoid hemorrhage, uremic patients with AV shunts/fistulas, open heart surgery, coronary artery bypass grafts, primary glomerulonephritis, sickle cell disease, diabetic retinopathy

CONTRAINDICATIONS:

Hypersensitivity, severe hepatic disease, active bleeding, coagulopathy

 

Black Box Warning:

Agranulocytosis, neutropenia, thrombocytopenia, thrombotic thrombocytopenic purpura (TTP)

Precautions:
Pregnancy (B), breastfeeding, children, geriatric patients, past hepatic disease, renal disease, increased bleeding risk, peptic ulcer disease, surgery

 

Black Box Warning:

Anemia, hematologic disease

DOSAGE AND ROUTES
Calculator

• Adult:
PO
250 mg bid with food

Available forms:
Tabs 250 mg

Administer:

• 
With food to decrease gastric symptoms

• 
Discontinue when absolute neutrophil count falls during treatment to <1200/
mm
3
or platelets <80,000/mm
3
; may use methylPREDNISolone IV 20 mg to provide normal bleeding time in 2 hr

SIDE EFFECTS

CNS:
Dizziness, headache, weakness

EENT:
Tinnitus, epistaxis

GI:
Nausea, vomiting,
diarrhea
, GI discomfort,
cholestatic jaundice, hepatitis,
increased cholesterol, LDL, VLDL, triglycerides

GU:
Hematuria

HEMA:
Bleeding (epistaxis, hematuria, conjunctival hemorrhage, GI bleeding), agranulocytosis, neutropenia, thrombocytopenia, thrombotic thombocytopenic purpura

INTEG:
Rash
, pruritus

META:
Hypercholesterolemia, hypertriglyceridemia

PHARMACOKINETICS

Peak 1-3 hr; metabolized by liver; excreted in urine, feces; half-life increases with repeated dosing, initially 12-36 hr; antiplatelet effect 2-5 days; 98% protein binding

INTERACTIONS

Increase:
levels of CYP2C19, CYP2DC substrates, phenytoin, fosphenytoin, ambrisentan, theophylline

Increase:
bleeding tendencies—anticoagulants, salicylates, thrombolytics, NSAIDs, abciximab, eptifibatide, tirofiban, thrombin inhibitors, SSRIs, aspirin

Increase:
effects of ticlopidine—cimetidine

Decrease:
plasma levels of ticlopidine—antacids

Decrease:
plasma levels of digoxin, cycloSPORINE

Drug/Herb

Increase:
bleeding risk—ginger, ginkgo, garlic, feverfew, horse chestnut, green tea

NURSING CONSIDERATIONS
Assess:

• 
Hepatic studies: AST, ALT, bilirubin, creatinine with long-term therapy

 

Black Box Warning:

Blood dyscrasias, bone marrow depression, do not use in those with a history of these conditions; blood studies: CBC; CBC q2wk × 3 mo, Hct, Hgb, PT with long-term therapy

 
Bleeding time at baseline and throughout treatment; levels may be 2-5× normal limit

Evaluate:

• 
Therapeutic response: absence of stroke

Teach patient/family:

• 
That blood work will be necessary during treatment

• 
To report any unusual bleeding to prescriber

• 
To report side effects such as diarrhea, skin rashes, subcut bleeding, signs of cholestasis (jaundiced skin and sclera, dark urine, light-colored stools)

• 
That product should be discontinued 10-14 days before surgery; not to double a missed dose

• 
That there are many product and herbal interactions to avoid all OTC products unless approved by prescriber

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

tigecycline (Rx)

(tye-ge-sye′kleen)

Tygacil

Func. class.:
Broad-spectrum antiinfective

Chem. class.:
Glycylcyclines

ACTION:

Inhibits protein synthesis and phosphorylation in microorganisms; bacteriostatic structurally similar to the tetracyclines

USES:

Complicated skin/skin-structure infections
(Escherichia coli, Enterococcus faecalis
[vancomycin-susceptible only]
Staphylococcus aureus
,
Streptococcus agalactiae
,
S. anginosus
group,
S. pyogenes
,
Bacteroides fragilis;
complicated intraabdominal infections
[Citrobacter freundii] Enterobacter cloacae, E. coli, Klebsiella oxytoca, K. pneumoniae, E. faecalis
[vancomycin-susceptible o
nly],
S. aureus
[methicillin-susceptible only],
S. anginosus
group,
B. fragilis, Bacteroides thetaiotaomicron, B. uniformis, B. vulgatus, Clostridium perfringens, Peptostreptococcus micros);
community-acquired pneumonia

CONTRAINDICATIONS:

Pregnancy (D), breastfeeding, children <18 yr, hypersensitivity to tigecycline

Precautions:
Renal/hepatic disease, hypersensitivity to tetracyclines, ventilator-associated/hospital-acquired pneumonias

DOSAGE AND ROUTES
Calculator

• Adult:
IV
100 mg then 50 mg q12hr,
IV INF
given over 30-60 min q12hr; given for 5-14 days, depending on infection

Hepatic dose

• Adult:
IV
(Child-Pugh C) 100 mg then 25 mg q12hr

Available forms:
Powder for inj, lyophilized 50 mg

Administer:

• 
Tigecycline allergy test before using, obtain C&S, do not begin treatment before results or if susceptible organism is strongly suspected

Intermittent IV INF route

• 
Reconstitute each vial with 5.3 ml of 0.9% NaCl or D
5
(10 mg/ml); swirl to dissolve; immediately withdraw 5 ml of reconstituted sol and add to 100-ml IV bag for inf (1 mg/ml); may be yellow or orange; if not, sol should be discarded; do not give if particulate matter is present, use a dedicated IV line or
Y
-site, flush with NS before and after use, give over 1/2 hr

Y-site compatibilities:
Acyclovir, alfentanil, allopurinol, amifostine, amikacin, aminocaproic acid, aminophylline, amphotericin B liposome, ampicillin, ampicillin/sulbactam, argatroban, azithromycin, aztreonam, bivalirudin, bumetanide, buprenorphine, butorphanol, calcium chloride/gluconate, CARBOplatin, carmustine, caspofungin, ceFAZolin, cefepime, cefotaxime, cefoTEtan, cefOXitin, cefTAZidime, ceftizoxime, cefTRIAXone, cefuroxime, cimetidine, ciprofloxacin, cisatracurium, CISplatin, clindamycin, cyclophosphamide, cycloSPORINE, cytarabine, dacarbazine, DACTINomycin, DAPTOmycin, DAUNOrubicin hydrochloride, dexamethasone, dexmedetomidine, dexrazoxane, digoxin, diltiazem, diphenhydrAMINE, DOBUTamine, DOCEtaxel, dolasetron, DOPamine, doripenem, DOXOrubicin hydrochloride, DOXOrubicin liposome, droperidol, enalaprilat, EPINEPHrine, eptifibatide, ertapenem, erythromycin, esmolol, etoposide, etoposide phosphate, famotidine, fenoldopam, fentaNYL, fluconazole, fludarabine, fluorouracil, foscarnet, fosphenytoin, furosemide, ganciclovir, gemcitabine, gentamicin, glycopyrrolate, granisetron, haloperidol, heparin, hydrocortisone, HYDROmorphone, ifosfamide, imipenem/cilastatin, insulin, irinotecan, isoproterenol, ketorolac, labetalol, lansoprazole, lepirudin, leucovorin, levofloxacin, lidocaine, linezolid, LORazepam, magnesium sulfate, mannitol, mechlorethamine, melphalan, meperidine, meropenem, mesna, methohexital, methotrexate, methyldopa, metoclopramide, metoprolol, metroNIDAZOLE, midazolam, milrinone, mitoMYcin, mitoXANtrone, morphine, moxifloxacin, mycophenolate, nafcillin, nalbuphine, naloxone, nesiritide, nitroglycerin, nitroprusside, norepinephrine, octreotide, ondansetron, oxaliplatin, oxytocin, PACLitaxel, palonosetron, pamidronate, pancuronium, pantoprazole, PEMEtrexed, pemtamidine, pentazocin, PENTobarbital, PHENobarbital, phenylephrine, piperacillin/tazobactam, potassium acetate/chloride/phosphate, procainamide, prochlorperazine, promethazine, propofol, propranolol, ranitidine, remifentanil, rocuronium, sodium acetate/bicarbonate/phosphate, streptozocin, succinylcholine, SUFentanil, tacrolimus, teniposide, theophylline, thiopental, thiotepa, ticarcillin/clavulanate, tirofiban, tobramycin, topotecan, trimethoprim/sulfamethoxazole, vancomycin, vasopressin, vecuronium, vinBLAStine, vinCRIStine, vinorelbine, zidovudine, zoledronic acid

SIDE EFFECTS

CNS:
Headache, dizziness, insomnia

CV:
Hypo/hypertension, phlebitis

EENT:
Tooth discoloration

GI:
Nausea, vomiting, diarrhea
, anorexia, constipation, dyspepsia, abdominal pain,
hepatotoxicity, hepatic failure, pseudomembranous colitis

HEMA:
Anemia, leukocytosis, thrombocytopenia

INTEG:
Rash
, pruritus, sweating, photosensitivity

META:
Increased ALT, AST, BUN, lactic acid, alk phos, amylase; hyperglycemia, hypokalemia, hypoproteinemia, bilirubinemia

MISC:
Back pain, fever, abnormal healing, abdominal pain, abscess, asthenia, infection, pain, peripheral edema, local reactions

RESP:
Cough, dyspnea

SYST:
Anaphylaxis

PHARMACOKINETICS

Not extensively metabolized, 22% of unchanged product excreted in urine, terminal half-life 42 hr, primarily biliary excreted, protein binding 71%-89%

INTERACTIONS

Increase:
effect of warfarin

Decrease:
effect of oral contraceptives

Drug/Lab Test

Increase:
amylase, LFTs, alk phos, BUN, creatinine, LDH, WBC, INR, PTT, PT

Decrease:
potassium, calcium, sodium, Hgb/Hct, platelets

NURSING CONSIDERATIONS
Assess:

 
Pseudomembranous colitis:
diarrhea, abdominal pain, fever, fatigue, anorexia; possible anemia, elevated WBC level, low serum albumin; stop product; usually either vancomycin or IV metroNIDAZOLE is given

• 
Signs of anemia: Hct, Hgb, fatigue

• 
Blood studies: PT, CBC, AST, ALT, BUN creatinine

 
Allergic reactions:
rash, itching, pruritus, angioedema

• 
Serious allergic skin reactions: Stevens-Johnson anaphylaxis

• 
Nausea, vomiting, diarrhea; administer antiemetic, antacids as ordered

• 
Toxicity:
pseudotumor cerebri, photosensitivity, antianabolic actions (azotemia, BUN, hypophosphatemia, metabolic acidosis) tigecycline is structurally similar to tetracycline; pancreatitis, hyperamylasemia; (may be fatal) if these occur, discontinue, improvement usually occurs after product is discontinued

• 
Overgrowth of infection:
fever, malaise, redness, pain, swelling, drainage, perineal itching, diarrhea, changes in cough or sputum

Perform/provide:

• 
Storage in tight, light-resistant container at room temp, diluted sol at room temp for up to 24 hr, 6 hr in vial, and remaining time in IV bag, ≤48 hr refrigerated

Evaluate:

• 
Therapeutic response: decreased temp, absence of lesions, negative C&S

Teach patient/family:

• 
To avoid sun exposure; sunscreen does not seem to decrease photosensitivity

 
To avoid pregnancy while taking this product; fetal harm may occur; avoid breastfeeding

• 
To report infection, increase in temp; to report burning, pain at inj site

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