Mosby's 2014 Nursing Drug Reference (320 page)

phosphate/biphosphate (
OTC
)

Fleet Enema, Phospho-Soda

Func. class.:
Laxative, saline

ACTION:

Increases water absorption in the small intestine by osmotic action; laxative effect occurs by increased peristalsis and water retention

USES:

Constipation, bowel or rectal preparation for surgery, exam

CONTRAINDICATIONS:

Hypersensitivity, rectal fissures, abdominal pain, nausea, vomiting, appendicitis, acute surgical abdomen, ulcerated hemorrhoids, sodium-restricted diet, renal failure, hyperphosphatemia, hypocalcemia, hypokalemia, hypernatremia, Addison’s disease, CHF, ascites, bowel perforation, megacolon, imperforate anus

 

Black Box Warning:

GI obstruction, renal failure

Precautions:
Pregnancy (C)

 

Black Box Warning:

Colitis, geriatric hypovolemia, renal disease

DOSAGE AND ROUTES
Calculator

• Adult:
PO
20-30 ml (Phospho-Soda)

• Child:
PO
5-15 ml (Phospho-Soda)

• Adult and child
>
12 yr:
RECT
1 enema (118 ml)

• Child 2-12 yr:
RECT
1/2 enema (59 ml)

Available forms:
Enema 7 g phosphate/19 g biphosphate/118 ml; oral sol 18 g phosphate/48 g biphosphate/100 ml

Administer:

• 
Alone for better absorption; do not take within 1-2 hr of other products

SIDE EFFECTS

CV:
Dysrhythmias, cardiac arrest,
hypotension,
widening QRS complex

GI:
Nausea, cramps
, diarrhea

META:
Electrolyte, fluid imbalances

PHARMACOKINETICS

Onset 30 min-3 hr, excreted in feces

NURSING CONSIDERATIONS
Assess:

• 
Stools:
color, amount, consistency; bowel pattern, bowel sounds, flatulence, distention, fever, dietary patterns, exercise; cramping, rectal bleeding, nausea, vomiting; if these occur, product should be discontinued

• 
Blood, urine electrolytes if product used often

Evaluate:

• 
Therapeutic response: decrease in constipation

Teach patient/family:

• 
Not to use laxatives for long-term therapy because bowel tone will be lost

• 
That normal bowel movements do not always occur daily

• 
Not to use in presence of abdominal pain, nausea, vomiting

• 
To notify prescriber if constipation unrelieved or if symptoms of electrolyte imbalance occur: muscle cramps, pain, weakness, dizziness, excessive thirst

• 
To maintain fluid consumption

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

physostigmine
ophthalmic

 

phytonadione (Rx)

(fye-toe-na-dye′one)

Mephyton, Vit K

Func. class.:
Vit K
1
, fat-soluble vitamin

ACTION:

Needed for adequate blood clotting (factors II, VII, IX, X)

USES:

Vit K malabsorption, hypoprothrombinemia, prevention of hypoprothrombinemia caused by oral anticoagulants, prevention of hemorrhagic disease of the newborn

CONTRAINDICATIONS:

Hypersensitivity, severe hepatic disease, last few weeks of pregnancy

Precautions:
Pregnancy (C), neonates, hepatic disease

 

Black Box Warning:

IV use

DOSAGE AND ROUTES
Calculator
Hypoprothrombinemia caused by vit K malabsorption

• Adult:
PO/IM
2.5-25 mg, may repeat or increase to 50 mg

• Child:
PO
2.5-5 mg

• Infant:
PO/IM
2 mg

Prevention of hemorrhagic disease of the newborn

• Neonate:
IM
0.5-1 mg within 1 hr after birth, repeat after 2-3 wk if required

Hypoprothrombinemia caused by oral anticoagulants

• Adult and child:
PO/SUBCUT/IM
1-10 mg, may repeat 12-48 hr after
PO
dose or 6-8 hr after
SUBCUT/IM
dose based on INR

Available forms:
Tabs 5 mg; inj 10 mg/ml, 1 mg/0.5 ml

Administer:
Intermittent IV INF route

• 
After diluting with ≥10 ml D
5
NS; give max 1 mg/min

 
IV only when other routes not possible (deaths have occurred)

Y-site compatibilities:
Alfentanil, amikacin, aminophylline, ascorbic acid, atracurium, atropine, azaTHIOprine, aztreonam, bumetanide, buprenorphine, butorphanol, calcium chloride/gluconate, ceFAZolin, cefonicid, cefoperazone, cefotaxime, cefoTEtan, cefOXitin, cefTAZidime, ceftizoxime, cefTRIAXone, cefuroxime, chloramphenicol, chlorproMAZINE, cimetidine, clindamycin, cyanocobalamin, cycloSPORINE, dexamethasone, digoxin, diphenhydrAMINE, DOPamine, doxycycline, enalaprilat, ePHEDrine, EPINEPHrine, epoetin alfa, erythromycin, esmolol, famotidine, fentaNYL, fluconazole, folic acid, furosemide, ganciclovir, gentamicin, glycopyrrolate, heparin, hydrocortisone, imipenem/cilastatin, indomethacin, insulin, isoproterenol, ketorolac, labetalol, lidocaine, mannitol, meperidine, metaraminol, methoxamine, methyldopate, metoclopramide, metoprolol, metroNIDAZOLE, midazolam, morphine, multivitamins, nafcillin, nalbuphine, naloxone, nitroglycerin, nitroprusside, norepinephrine, ondansetron, oxacillin, oxytocin, papaverine, penicillin G potassium, pentamidine, pentazocine, PENTobarbital, PHENobarbital, phentolamine, phenylephrine, potassium chloride, procainamide, prochlorperazine, propranolol, pyridoxime, ranitidine, sodium bicarbonate, succinylcholine, SUFentanil, theophylline, thiamine, ticarcillin/clavulanate, tobramycin, tolazoline, trimetaphan, urokinase, vancomycin, vasopressin, verapamil, vitamin B with C

SIDE EFFECTS

CNS:
Headache,
brain damage
(large doses)

GI:
Nausea, decreased LFTs

HEMA:
Hemolytic anemia, hemoglobinuria, hyperbilirubinemia

INTEG:
Rash, urticaria

RESP:
Bronchospasm,
dyspnea, feeling of chest constriction,
respiratory arrest

PHARMACOKINETICS

PO/INJ:
Metabolized, crosses placenta

INTERACTIONS

Decrease:
action of phytonadione—bile acid sequestrants, sucralfate, antiinfectives, salicylates, mineral oil

Decrease:
action of warfarin—large dose of product

NURSING CONSIDERATIONS
Assess:

• 
Bleeding:
emesis, stools, urine; pressure on all venipuncture sites; avoid all inj if possible

• 
PT during treatment (2-sec deviation from control time, bleeding time, clotting time); monitor for bleeding, pulse, and B/P

Perform/provide:

• 
Storage in tight, light-resistant container

Evaluate:

• 
Therapeutic response: prevention of hemorrhagic disease of the newborn, resolution of hypoprothrombinemia

Teach patient/family:

• 
Not to take other supplements, OTC products, prescription products unless directed by prescriber

• 
About the necessary foods for associated diet

• 
To avoid IM inj; to use soft toothbrush; not to floss, use electric razor until coagulation defect corrected

• 
To report symptoms of bleeding

• 
About the importance of frequent lab tests to monitor coagulation factors

• 
To notify all health care providers of use of this product

• 
To carry emergency ID describing condition and products used

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

pilocarpine ophthalmic

 

pimecrolimus topical

 

pioglitazone (Rx)

(pie-oh-glye′ta-zone)

Actos

Func. class.:
Antidiabetic, oral

Chem. class.:
Thiazolidinedione

ACTION:

Specifically targets insulin resistance; an insulin sensitizer; regulates the transcription of a number of insulin-responsive genes

USES:

Type 2 diabetes mellitus

CONTRAINDICATIONS:

Breastfeeding, children, hypersensitivity to thiazolidinedione, diabetic ketoacidosis

 

Black Box Warning:

NYHA Class III/IV heart failure

Precautions:
Pregnancy (C), geriatric patients, geriatric patients with CV disease, renal/hepatic/thyroid disease, edema, polycystic ovary syndrome, bladder cancer, osteoporosis, pulmonary disease, secondary malignancy

DOSAGE AND ROUTES
Calculator
Monotherapy

• Adult:
PO
15 or 30 mg/day, may increase to 45 mg/day; with strong CYP2C8, max 15 mg/day; with NYHA class I/II heart failure, max 15 mg/day

Combination therapy

• Adult:
PO
15 or 30 mg/day with a sulfonylurea, metformin, or insulin; decrease sulfonylurea dose if hypoglycemia occurs; decrease insulin dose by 10%-25% if hypoglycemia occurs or if plasma glucose is <100 mg/dl, max 45 mg/day

Hepatic dose

• 
Do not use in active hepatic disease or if ALT >2.5 times ULN

Available forms:
Tabs 15, 30, 45 mg

Administer:

• 
Once a day; without regard to meals

• 
Tabs crushed and mixed with food or fluids for patients with difficulty swallowing

SIDE EFFECTS

CNS:
Headache

CV:
MI, heart failure, death (geriatric patients)

ENDO:
Hypo/hyperglycemia

MISC:
Sinusitis, upper respiratory tract infection, pharyngitis
,
hepatotoxicity,
edema, weight gain, anemia, macular edema;
risk of bladder cancer (use >1 yr)

MS:
Rhabdomyolysis,
fractures (females), myalgia

PHARMACOKINETICS

Maximal reduction in FBS after 12 wk; half-life 3-7 hr, terminal 16-24 hr; protein binding >99%

INTERACTIONS

Decrease:
effect of atorvastatin

Decrease:
effect of oral contraceptives; use alternative contraceptive method

Decrease:
pioglitazone effect—CYP2C8 inducers (ketoconazole, fluconazole, itraconazole, miconazole, voriconazole)

Drug/Herb

Increase:
hypoglycemia—garlic, green tea, horse chestnut

Drug/Lab Test

Increase:
CPK, LFTs, HDL, cholesterol

Decrease:
glucose, Hct/Hgb

NURSING CONSIDERATIONS
Assess:

 

Black Box Warning:

Heart failure: do not use in NYHA Class III/IV; excessive/rapid weight gain >5 lb, dyspnea, edema; may need to be reduced or discontinued

• Bladder cancer:
avoid use in a history of bladder cancer; use of pioglitazone >1 yr has shown an increase in bladder cancer

• 
Hypoglycemic reactions:
sweating, weakness, dizziness, anxiety, tremors, hunger; hyperglycemic reactions soon after meals (rare); may occur more often with insulin or other antidiabetics

• Hepatic disease:
check LFTs periodically: AST, LDH; do not start treatment in active heart disease or if ALT >2.5× upper limit of normal; if treatment has already begun, follow closely with continuing ALT levels; if ALT increases to >3× upper limit of normal, recheck ALT as soon as possible; if ALT remains >3× upper limit of normal, discontinue

• FBS, glycosylated HbA1c, plasma lipids/lipoproteins, B/P, body weight during treatment

• 
CBC with differential prior to and during therapy; more necessary in those with anemia, Hct/Hgb (may be decreased in first few months of treatment)

Perform/provide:

• 
Conversion from other oral hypoglycemic agents; change may be made with gradual dosage change; monitor serum glucose during conversion

• 
Storage in tight container in cool environment

Evaluate:

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

Teach patient/family:

• 
To self-monitor using a blood glucose meter

• 
About the symptoms of hypo/hyperglycemia, what to do about each

• 
That product must be continued on daily basis; about the consequences of discontinuing product abruptly

• 
To avoid OTC medications or herbal preparations unless approved by prescriber

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

• To notify prescriber if oral contraceptives are used, effect may be decreased; not to use product if breastfeeding

• To report symptoms of hepatic dysfunction: nausea, vomiting, abdominal pain, fatigue, anorexia, dark urine, jaundice

• 
To report weight gain, edema

• 
That lab work, eye exams will be needed periodically

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