Mosby's 2014 Nursing Drug Reference (370 page)

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

sitaGLIPtin (Rx)

(sit-a-glip′tin)

Januvia

Func. class.:
Antidiabetic, oral

Chem. class.:
Dipeptidyl-peptidase-4 inhibitor (DPP-4 inhibitor)

ACTION:

Slows the inactivation of incretin hormones; improves glucose homeostasis, improves glucose-dependent insulin secretion, lowers glucagon secretions, and slows gastric emptying time

USES:

Type 2 diabetes mellitus as monotherapy or in combination with other antidiabetic agents

CONTRAINDICATIONS:

Hypersensitivity, diabetic ketoacidosis (DKA)

Precautions:
Pregnancy (B), geriatric patients, GI obstruction, surgery, thyroid/renal/hepatic disease, trauma, breastfeeding, pancreatitis, hypercortisolism, hyperglycemia, hyperthyroidism, hypogylcemia, ileus, pituitary insufficiency, surgery, type 1 diabetes mellitus, diabetic ketoacidosis

DOSAGE AND ROUTES
Calculator

• Adult:
PO
100 mg/day; may use with antidiabetic agents other than insulin

Renal dose

• Adult:
PO
CCr 30-50 ml/min, 50 mg daily; CCr <30 ml/min, 25 mg daily

Available forms:
Tabs 25, 50, 100 mg

Administer:

• 
May be taken with/without food

• 
Do not split, crush, chew; swallow whole

SIDE EFFECTS

CNS:
Headache

ENDO:
Hypoglycemia

GI:
Nausea, vomiting
, abdominal pain, diarrhea,
pancreatitis,
constipation

MISC:
Peripheral edema

SYST:
Anaphylaxis, Stevens-Johnson syndrome, angioedema

PHARMACOKINETICS

Rapidly absorbed, excreted by the kidneys (unchanged 79%), terminal half-life 12.4 hr, peak 1-4 hr

INTERACTIONS

Increase:
sitaGLIPtin level—cimetidine, disopyramide

Increase:
levels of digoxin

Increase:
hypoglycemia—androgens, insulins, β-blockers, cimetidine, corticosteroids, salicylates, MAOIs, fibric acid derivatives, FLUoxetine, sulfonylureas

Decrease:
antidiabetic effect—thiazide diuretics, ACE inhibitors, protease inhibitors, sympathomimetics, ARIPiprazole, cloZAPine, OLANZapine, QUEtiapine, risperiDONE, ziprasidone, phenytoin, fosphenytoin, phenothiazines, estrogens, progestins, oral contraceptives

Drug/Herb

Increase:
antidiabetic effect—garlic, green tea, horse chestnut

Drug/Lab Test

Increase:
creatinine, LFTs

NURSING CONSIDERATIONS
Assess:

• 
Hypoglycemic reactions:
sweating, weakness, dizziness, anxiety, tremors, hunger; hyperglycemic reactions soon after meals

 
Serious skin reactions:
swelling of face, mouth, lips, dyspnea, wheezing

 
Pancreatitis:
severe abdominal pain, nausea, vomiting; discontinue product

• 
Renal studies:
BUN, creatinine during treatment, especially in geriatric patients or those with renal disease

• 
Glycosylated hemoglobin A1c; monitor blood glucose (BG) as needed

Perform/provide:

• 
Conversion from other antidiabetic agents; change may be made with gradual dosage change

• 
Storage in tight container at room temp

Evaluate:

• 
Therapeutic response: decrease in polyuria, polydipsia, polyphagia; clear sensorium; absence of dizziness; stable gait, blood glucose, A1c improvement

Teach patient/family:

• 
To perform regular self-monitoring of blood glucose using blood-glucose meter

• 
About the symptoms of hypo/hyperglycemia, what to do about each; to carry emergency ID

• 
To notify prescriber if pregnancy is planned, suspected

• 
That product must be continued on daily basis; about consequences of discontinuing product abruptly; to continue health regimen (diet, exercise)

• 
To avoid OTC medications, alcohol, digoxin, exenatide, insulins, nateglinide, repaglinide, and other products that lower blood glucose unless approved by prescriber

• 
That diabetes is a lifelong illness; that product is not a cure, only controls symptoms

• 
That all food included in diet plan must be eaten to prevent hypo/hyperglycemia

• 
To immediately notify prescriber of hypersensitivity reactions (rash, swelling of face, trouble breathing)

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

sodium bicarbonate (Rx,
OTC
)

Baking soda, Neut, Sellymin

Func. class.:
Alkalinizer

Chem. class.:
NaHCO
3

ACTION:

Orally neutralizes gastric acid, which forms water, NaCl, CO
2
; increases plasma bicarbonate, which buf
fers H
+
ion concentration; reverses acidosis IV

USES:

Acidosis (metabolic), cardiac arrest, alkalinization (systemic/urinary) antacid, salicylate poisoning

Unlabeled uses:
Contrast media nephrotoxicity prevention

CONTRAINDICATIONS:

Metabolic/respiratory alkalosis, hypochloremia, hypocalcemia

Precautions:
Pregnancy (C), children, CHF, cirrhosis, toxemia, renal disease, hypertension, hypokalemia, breastfeeding, hypernatremia, Bartter’s syndrome, Cushing’s syndrome, hyperaldosteronism

DOSAGE AND ROUTES
Calculator
Acidosis, metabolic (not associated with cardiac arrest)

• Adult and child:
IV INF
2-5 mEq/kg over 4-8 hr depending on CO
2
, pH, ABGs

Cardiac arrest

• Adult and child:
IV BOL
1 mEq/kg of 7.5% or 8.4% sol, then 0.5 mEq/kg q10min, then doses based on ABGs

• Infant:
IV
1 mEq/kg over several min (use only the 0.5 mEq/ml [4.2%] sol for inj)

Alkalinization of urine

• Adult:
PO
325 mg to 2 g qid or 48 mEq (4 g) then 12-24 mEq q4hr

• Child:
PO
84-840 mg/kg/day (1-10 mEq/kg) in divided doses q4-6hr

Antacid

• Adult:
PO
300 mg to 2 g chewed, taken with water daily-qid

Available forms:
Tabs 300, 325, 600, 650 mg; inj 4.2%, 5%, 7.5%, 8.4%

Administer:
PO route

• 
Chew antacid tablets and drink 8 oz water

• 
Do not take antacid with milk because milk-alkali syndrome may result

Direct IV route

• 
Use for cardiac emergencies, not used often in cardiac arrest

• 
Use ampules or prefilled syringes only; give by rapid bolus dose; flush with NS before, after use

Continuous IV INF route

• 
Diluted in an equal amount of compatible sol given 2-5 mEq/kg over 4-8 hr, max 50 mEq/hr; slower rate in children

• 
Extravasation with IV administration (tissue sloughing, ulceration, necrosis)

Y-site compatibilities:
Acyclovir, amifostine, asparaginase, aztreonam, bivalirudin, bumetanide, ceFAZolin, cefepime, cefTAZidime, ceftizoxime, cefTRIAXone, chloramphenicol, cimetidine, cladribine, clindamycin, cyclophosphamide, cycloSPORINE, cytarabine, DAPTOmycin, DAUNOrubicin, dexamethasone sodium phosphated exmedetomidine, digoxin, DOCEtaxel, DOXOrubicin, enalaprilat, ertapenem, erythromycin, esmolol, etoposide, etoposide phosphate, famotidine, fentaNYL, filgrastim, fluconazole, fludarabine, furosemide, gallium nitrate, gemcitabine, gentamicin, granisetron, heparin, hydrocortisone sodium succinate, ifosfamide, indomethacin, insulin, ketorolac, labetalol, levofloxacin, lidocaine, linezolid, LORazepam, magnesium sulfate, melphalan, mesna, meperidine, methylPREDNISolone sodium succinate, metoclopramide, metoprolol, metroNIDAZOLE, milrinone, morphine, nafcillin, nitroglycerin, nitroprusside, PACLitaxel, palonosetron, pantoprazole, PEMEtrexed, penicillin G potassium, phenylephrine, phytonadione, piperacillin/tazobactam, potassium chloride, procainamide, propranolol, propofol, protamine, ranitidine, remifentanil, tacrolimus, teniposide, thiotepa, ticarcillin/clavulanate, tirofiban, tobramycin, tolazoline, vasopressin, vit B complex with C, voriconazole

SIDE EFFECTS

CNS:
Irritability, headache, confusion, stimulation, tremors,
twitching, hyperreflexia
,
tetany,
weakness,
seizures
of alkalosis

CV:
Irregular pulse,
cardiac arrest,
water retention, edema, weight gain

GI:
Flatulence,
belching, distention

META:
Metabolic alkalosis

MS:
Muscular twitching, tetany, irritability

PHARMACOKINETICS

PO:
Onset rapid, duration 10 min

IV:
Onset 15 min, duration 1-2 hr, excreted in urine

INTERACTIONS

Increase:
effects—amphetamines, mecamylamine, quiNINE, quiNIDine, pseudoephedrine, flecainide, anorexiants, sympathomimetics

Increase:
sodium and decrease potassium—corticosteroids

Decrease:
effects—lithium, chlorproPAMIDE, barbiturates, salicylates, benzodiazepines, ketoconazole, corticosteroids

Drug/Lab Test

Increase:
sodium, lactate

Decrease:
potassium

NURSING CONSIDERATIONS
Assess:

• 
Respiratory and pulse rate, rhythm, depth, lung sounds; notify prescriber of abnormalities

• 
Fluid balance
(I&O, weight daily, edema); notify prescriber of fluid overload; assess for edema, crackles, shortness of breath

• 
Electrolytes, blood pH, PO
2
, HCO
3

, during treatment; ABGs frequently during emergencies

• 
Weight daily with initial therapy

• 
Alkalosis:
irritability, confusion, twitching, hyperreflexia stimulation, slow respirations, cyanosis, irregular pulse

• 
Milk-alkali syndrome:
confusion, headache, nausea, vomiting, anorexia, urinary stones, hypercalcemia

• 
For GI perforation secondary to carbon dioxide in GI tract; may lead to perforation if ulcer is severe enough

Evaluate:

• 
Therapeutic response: ABGs, electrolytes, blood pH, HCO
3

WNL

Teach patient/family:

• 
Not to take antacid with milk because milk-alkali syndrome may result; not to use antacid for >2 wk

 
To notify prescriber if indigestion accompanied by chest pain; trouble breathing; diarrhea; dark, tarry stools; vomit that looks like coffee grounds; swelling of feet/ankles

• 
About sodium-restricted diet; to avoid use of baking soda for indigestion

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