Mosby's 2014 Nursing Drug Reference (241 page)

BOOK: Mosby's 2014 Nursing Drug Reference
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ACTION:

Increases electrical stimulation threshold of ventricle, His-Purkinje system, which stabilizes cardiac membrane, decreases automaticity

USES:

Ventricular tachycardia, ventricular dysrhythmias during cardiac surgery, digoxin toxicity, cardiac catheterization

Unlabeled uses:
Attenuation of intracranial pressure increased during intubation/endotracheal tube suctioning

CONTRAINDICATIONS:

Hyper-sensitivity to amides, severe heart block, supraventricular dysrhythmias, Adams-Stokes syndrome, Wolff-Parkinson-White syndrome

Precautions:
Pregnancy (B), breastfeeding, children, geriatric patients, renal/hepatic disease, CHF, respiratory depression, malignant hyperthermia, myasthenia gravis, weight <50 kg

DOSAGE AND ROUTES
Calculator

• Adult:
IV BOL
50-100 mg (1-1.5 mg/kg) 25-50 mg/min, repeat q3-5min, max 300 mg in 1 hr; begin
IV INF; IV INF
1-4 mg/min (20-50 mcg/kg/min);
IM
200-300 mg (4.3 mg/kg) in deltoid muscle, may repeat after 1-11/2 hr if needed

Available forms:
IV INF
0.2% (2 mg/ml), 0.4% (4 mg/ml), 0.8% (8 mg/ml); IV ad 4% (40 mg/ml), 10% (100 mg/ml), 20% (200 mg/ml);
IV dir
1% (10 mg/ml), 2% (20 mg/ml);
IM
10% 300 mg/ml

Administer:

• 
IM inj in deltoid; aspirate to avoid intravascular administration; check IV site daily for infiltration or extravasation

IV route

• 
Bolus undiluted (1%, 2% only), give ≤50 mg/1 min or dilute 1 g/250-500 ml D
5
W; titrate to patient response; use inf pump; pediatric inf 120 mg lidocaine/100 ml D
5
W; 1-2.5 ml/kg/hr = 20-50 mcg/kg/min; use only 1%, 2% sol for IV bol

Y-site compatibilities:
Alemtuzumab, alteplase, amikacin, aminophylline, amiodarone, argatroban, atropine, aztreonam, bivalirudin, bumetanide, calcium chloride/gluconate, ceFAZolin, cefotaxime, cefOXitin, cefTAZidime, ceftizoxime, cefTRIAXone, cefuroxime, chloramphenicol, cimetidine, ciprofloxacin, cisatracurium, clindamycin, cycloSPORINE, DAPTOmycin, dexamethasone, dexmedetomidine, digoxin, diltiazem, diphenhydrAMINE, DOBUTamine, DOPamine, doxycycline, enalaprilat, EPINEPHrine, eptifibatide, ertapenem, erythromycin,
esmolol, etomidate, famotidine, fenoldopam, fentaNYL, fluconazole, furosemide, gentamicin, granisetron, haloperidol, heparin, hydrocortisone, imipenem/cilastatin, inamrinone, insulin, isoproterenol, ketorolac, labetalol, levofloxacin, linezolid, LORazepam, magnesium sulfate, meperidine, methylPREDNISolone sodium succinate, metoclopramide, metoprolol, metroNIDAZOLE, micafungin, midazolam, morphine, nafcillin, niCARdipine, nitroglycerin, nitroprusside, norepinephrine, ondansetron, palonosetron, penicillin G potassium, phenylephrine, phytonadione, piperacillin/tazobactam, potassium chloride, procainamide, prochlorperazine, promethazine, propofol, propranolol, protamine, quinupristin/dalfopristin, ranitidine, remifentanil, sodium bicarbonate, streptokinase, tacrolimus, theophylline, ticarcillin/clavulanate, tigecycline, tirofiban, tobramycin, vancomycin, vasopressin, verapamil, vitamin B complex with C, voriconazole, warfarin

SIDE EFFECTS

CNS:
Headache, dizziness
, involuntary movement, confusion, tremor, drowsiness, euphoria,
seizures,
shivering

CV:
Hypotension, bradycardia
,
heart block, CV collapse, arrest

EENT:
Tinnitus, blurred vision

GI:
Nausea, vomiting, anorexia

HEMA:
Methemoglobinemia

INTEG:
Rash, urticaria, edema, swelling, petechiae, pruritus

MISC:
Febrile response, phlebitis at inj site

RESP:
Dyspnea,
respiratory depression

PHARMACOKINETICS

Half-life 8 min, 1-2 hr (terminal); metabolized in liver; excreted in urine; crosses placenta

IM:
Onset 5-15 min, duration 1½ hr

IV:
Onset 2 min, duration 20 min

INTERACTIONS

Increase:
cardiac depression, toxicity—amiodarone, phenytoin, procainamide, propranolol

Increase:
hypotensive effects—MAOIs, antihypertensives

Increase:
neuromuscular blockade—neuromuscular blockers, tubocurarine

Increase:
lidocaine effects—cimetidine, beta blockers, protease inhibitors, ritonavir

Decrease:
lidocaine effects—barbiturates, ciprofloxacin, voriconazole

Decrease:
effect of—cycloSPORINE

Drug/Lab Test

Increase:
CPK

NURSING CONSIDERATIONS
Assess:

 
ECG continuously to determine increased PR or QRS segments; if these develop, discontinue or reduce rate; watch for increased ventricular ectopic beats, may have to rebolus; B/P

• 
Blood levels:
therapeutic level, 1.5-5 mcg/ml

• 
I&O ratio, electrolytes (potassium, sodium, chlorine)

 
Malignant hyperthermia:
tachypnea, tachycardia, changes in B/P, increased temp

• 
Respiratory status:
rate, rhythm, lung fields for crackles, watch for respiratory depression; lung fields, bilateral crackles may occur with CHF; increased respiration, pulse; product should be discontinued

• 
CNS effects:
dizziness, confusion, psychosis, paresthesias, convulsions; product should be discontinued

Evaluate:

• 
Therapeutic response: decreased dysrhythmias

Teach patient/family:

• 
About the use of automatic lidocaine injection device if ordered for personal use

• 
To report signs of toxicity

TREATMENT OF OVERDOSE:

O
2
, artificial ventilation, ECG; administer DOPamine for circulatory depression, diazepam or thiopental for seizures; decrease product if needed

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

lidocaine topical

 

linagliptin

(lin′a-glip′tin)

Tradjenta

Func. class.:
Antidiabetic

Chem. class.:
Didipeptidyl peptidase-4 inhibitor

ACTION:

Slows the inactivation of incretin hormones. Concentrations of the active, intact hormones are increased, thereby increasing and prolonging the action of these hormones. Incretin hormones are released by the intestine throughout the day, and levels are increased in response to a meal

USES:

Type 2 diabetes mellitus

CONTRAINDICATIONS:

Hypersensitivity to linagliptin
, type 1 diabetes mellitus, diabetic ketoacidosis (DKA)

Precautions:
Pregnancy (category B), breastfeeding, adolescents or children <18 yr, debilitated physical condition, malnutrition, uncontrolled adrenal insufficiency, pituitary insufficiency, hypo/hyperthyroidism, diarrhea, gastroparesis, GI obstruction, ileus, female hormonal changes, high fever, severe psychological stress, uncontrolled hypercortisolism

DOSAGE AND ROUTES
Calculator

• Adult:
PO
5 mg daily; when used with a sulfonylurea or insulin; a lower dose of the sulfonylurea may be necessary to minimize the risk of hypoglycemia

Available forms:
Tab 5 mg

Administer:

• 
Once daily; may give without regard to food

SIDE EFFECTS

CNS:
Headache

EENT:
Nasopharyngitis

ENDO:
Hypoglycemia, hyperuricemia

GI:
Body weight loss,
pancreatitis

INTEG:
Hypersensitivity reactions, urticaria,
angioedema, exfoliative dermatitis

MISC:
Arthralgia, back pain

RESP:
Bronchial hyperreactivity (with
bronchospasm
), nasopharyngitis, cough

PHARMACOKINETICS

Extensively distributed in the tissues, protein binding is concentration-dependent, a weak to moderate inhibitor of CYP3A4, plasma terminal half life of >100 hr; effective half-life 12 hr, 90% excreted unchanged, 85% excreted via the enterohepatic system (80%) or in urine (5%) within 4 days of dosing, rapidly absorbed, peak in 1.5 hr; bioavailability 30%

INTERACTIONS

• 
Increased hypoglycemia: sulfonylureas, beta blockers, ACE inhibitors, angiotensin II receptor antagonists, disopyramide, guanethidine, cloNIDine, octreotide, fenfluramine, dexfenfluramine, fibric acid derivatives, monoamine oxidase inhibitors (MAOIs), FLUoxetine, salicylates

• 
Increased masking of the signs and symptoms of hypoglycemia: reserpine

• 
Increased need for dosing change: cisapride, metoclopramide, tegaserod, androgens, alcohol, lithium, quinolones

Decrease:
hypoglycemic effect—dextrothyroxine, bumetanide, furosemide, ethacrynic acid, torsemide, estrogens, progestins, oral contraceptives, thyroid hormones, glucocorticoids, glucagon, carbonic anhydrase inhibitors, phenytoin, fosphenytoin, or ethotoin; atypical antipsychotics (ARIPiprazole, cloZAPine, OLANZapine, QUEtiapine, risperiDONE,
and ziprasidone), phenothiazine, niacin (nicotinic acid), triamterene, thiazide diuretics

Decrease:
effect of linagliptin—CYP3A4 inducers (topiramate, rifabutin, pioglitazone, OXcarbazepine, carBAMazepine, nevirapine, modafinil, metyrapone, etravirine, efavirenz, bosentan, barbiturates, aprepitant, fosaprepitant

Drug/Herb:

Decrease:
linagliptin effect—St. John’s wort

Drug/Lab Test:

Increase:
uric acid

NURSING CONSIDERATIONS
Assess

• 
Hypo/hyperglycemia:
reaction may occur after meals, for severe hypoglycemia use IV Dextrose

• 
Monitor blood glucose, A1c, during treatment to determine diabetes control

• 
CBC baseline and periodically during treatment, report decreased blood counts

Perform/provide:

• 
Storage at room temperature

Evaluate:

• 
Improving blood glucose level, A1c; decreasing polydipsia, polyphagia, polyuria, clear sensorium, absence of dizziness

Teach patient/family:

• 
About the symptoms of hypo/hyperglycemia and what to do about each; to have glucagon emergency kit available, to carry sugar packets

• 
That product must be continued on a daily basis, about the consequences of discontinuing product abruptly; to take only as directed

• 
To avoid OTC products unless approved by prescriber

• 
That diabetes is a life-long illness, that product will not cure diabetes

• 
That all food in diet plan must be eaten to prevent hypoglycemia

• 
To carry emergency ID with prescriber, condition and medications taken

• 
To immediately report skin disorders, swelling, difficulty breathing, or severe abdominal pain

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