Mosby's 2014 Nursing Drug Reference (364 page)

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

saxagliptin (Rx)

(sax-a-glip′tin)

Onglyza

Func. class.:
Antidiabetic, oral

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

Do not confuse:
saxagliptin
/sitaGLIPtin

ACTION:

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

USES:

In adults, type 2 diabetes mellitus as monotherapy or in combination with other antidiabetic agents

CONTRAINDICATIONS:

Hypersensitivity, diabetic ketoacidosis (DKA), type 1 diabetes

Precautions:
Pregnancy (B), geriatric patients, GI obstruction, surgery, thyroid/renal/hepatic disease, trauma

DOSAGE AND ROUTES
Calculator

• Adult:
PO
2.5-5 mg; may use with other antidiabetic agents other than insulin; if used with insulin, a lower dose is needed

Renal dose

• Adult:
PO
CCr ≤50 ml/min, 2.5 mg daily

Available forms:
Tabs 2.5, 5 mg

Administer:
PO route

• 
May be taken with/without food

SIDE EFFECTS

CNS:
Headache

ENDO:
Hypoglycemia (renal impairment)

GI:
Nausea, vomiting
, abdominal pain

INTEG:
Urticaria,
angioedema
, anaphylaxis

MISC:
Lymphopenia, peripheral edema

PHARMACOKINETICS

Rapidly absorbed, excreted by the kidneys (unchanged 24%), terminal half-life 2.5 hr, 3.1 hr metabolite, peak 2 hr, duration 24 hr

INTERACTIONS

Increase:
hypoglycemia—androgens, insulins, β-blockers, cimetidine, corticosteroids, salicylates, MAOIs, fibric acid derivatives, FLUoxetine, insulin, sulfonylureas, ACE inhibitors; CYP3A4/5 inhibitors

Drug/Herb

Increase:
antidiabetic effect—garlic, horse chestnut

Drug/Lab Test

Decrease:
lymphocytes, glucose

NURSING CONSIDERATIONS
Assess:

• 
Hypoglycemic reactions
(sweating, weakness, dizziness, anxiety, tremors, hunger); monitor blood glucose, HbA1c
renal studies:
BUN, creatinine during treatment

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 at normal level

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

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

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

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

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

• 
To carry emergency ID

• 
To take product without regard to food

• 
To notify prescriber when surgery, trauma, stress, occurs because dose may need to be adjusted

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

scopolamine (Rx)

(skoe-pol′a-meen)

Maldemar, Scopace, Transderm Scop

Func. class.:
Cholinergic blocker

Chem. class.:
Belladonna alkaloid

ACTION:

Inhibits acetylcholine at receptor sites in autonomic nervous system, which controls secretions, free acids in stomach; blocks central muscarinic receptors, which decreases involuntary movements

USES:

Preoperatively to produce amnesia, sedation and to decrease secretions; motion sickness, parkinsonian symptoms

CONTRAINDICATIONS:

Hypersensitivity, closed-angle glaucoma, myasthenia gravis, GI/GU obstruction, hypersensitivity to belladonna, barbiturates

Precautions:
Pregnancy (C), breastfeeding, children, geriatric patients, prostatic hypertrophy, CHF, hypertension, dysrhythmia, gastric ulcer, renal/hepatic disease, hiatal hernia, GERD, ulcerative colitis, hyperthyroidism

DOSAGE AND ROUTES
Calculator
Motion sickness

• Adult:
TD
1 patch 4 hr before travel and q3days

Parkinsonian symptoms

• Adult:
PO
0.4-0.8 mg q8hr

Preoperatively

• Adult:
IM/IV/SUBCUT
0.32-0.65 mg;
TD
apply 1 patch
PM
before surgery or 1 hr before c-section

Nausea and vomiting

• Adult:
SUBCUT
0.6-1 mg

• Child:
SUBCUT
0.006 mg/kg; max 0.3 mg/dose

Available forms:
Inj 0.4 mg/ml; TD patch 72 hr (1.5 mg)

Administer:

• 
Parenteral dose with patient recumbent to prevent postural hypotension

• 
Parenteral dose slowly; keep patient in bed for ≥1 hr after dose

• 
With or after meals for GI upset; may give with fluids other than water

• 
At bedtime to avoid daytime drowsiness in patients with parkinsonism

• 
With analgesic to avoid behavioral changes when given preoperatively

Direct IV route

• 
Dilute with equal sterile water; give over 2-3 min

Syringe compatibilities:
Atropine, benzquinamide, butorphanol, chlorproMAZINE, cimetidine, diamorphine, dimenhyDRINATE, diphenhydrAMINE, droperidol, fentaNYL, glycopyrrolate, HYDROmorphone, hydrOXYzine, meperidine, metoclopramide, midazolam, morphine, nalbuphine, oxyCODONE, pentazocine, PENTobarbital, perphenazine, prochlorperazine, promazine, promethazine, ranitidine, SUFentanil, thiopental

Y-site compatibilities:
FentaNYL, heparin, hydrocortisone, HYDROmorphone, methadone, morphine, potassium chloride, propofol, SUFentanil, vit B/C

SIDE EFFECTS

CNS:
Confusion, anxiety, restlessness, irritability, delusions, hallucinations, headache, sedation, depression, incoherence, dizziness, excitement, delirium, flushing, weakness, fatigue, loss of memory

CV:
Palpitations, tachycardia, postural hypotension, paradoxical bradycardia

EENT:
Blurred vision, photophobia, dilated pupils, difficulty swallowing, mydriasis, cycloplegia

GI:
Dryness of mouth, constipation
, nausea, vomiting, abdominal distress,
paralytic ileus

GU:
Urinary hesitancy, retention

INTEG:
Urticaria, dry skin

MISC:
Suppression of breastfeeding, nasal congestion, decreased sweating

PHARMACOKINETICS

Excreted in urine, bile, feces (unchanged), half-life 8 hr

SUBCUT/IM:
Peak 30-60 min, duration 7 hr

IV:
Peak 10-15 min, duration 2 hr

INTERACTIONS

Increase:
anticholinergic effect—alcohol, opioids, antihistamines, phenothiazines, tricyclics

NURSING CONSIDERATIONS
Assess:

• 
VS periodically

• 
I&O ratio; retention commonly causes decreased urinary output

• 
Parkinsonism, EPS:
shuffling gait, muscle rigidity, involuntary movements; affect, mood, CNS depression, worsening of mental symptoms during early therapy

• 
Urinary hesitancy, retention; palpate bladder if retention occurs

• 
Constipation; increase fluids, bulk, exercise

• 
Tolerance during long-term therapy; dose may have to be increased or changed

Perform/provide:

• 
Storage at room temp in light-resistant container

• 
Hard candy, frequent drinks, sugarless gum to relieve dry mouth

Evaluate:

• 
Therapeutic response: decreased secretions

Teach patient/family:

• 
Not to discontinue product abruptly; to taper off over 1 wk

• 
To avoid driving, other hazardous activities because drowsiness may occur

• 
To avoid OTC medication: cough, cold preparations with alcohol, antihistamines unless directed by prescriber

• 
Transdermal route:
to apply with clean, dry hands; to wash, dry hands before and after applying to surface behind ear; to press patch firmly

• 
To avoid hazardous activities, activities requiring alertness because dizziness may occur

• 
To change patch q72hr

• 
To apply at least 4 hr before traveling

• 
If blurred vision, severe dizziness, drowsiness occurs, to discontinue use, use another type of antiemetic, or to rotate patch to other ear

• 
To read label of all OTC medications; if any scopolamine is found in product, avoid use

• 
To keep out of children’s reach

Other books

Fifty Shades Freed by E. L. James
The Wanton Troopers by Alden Nowlan
The Invisible by Amelia Kahaney
The Rings of Poseidon by Mike Crowson
If Only In His Dreams by Schertz, Melanie
The Brave Apprentice by P. W. Catanese
Asenath by Anna Patricio
You Suck by Christopher Moore
Raising Atlantis by Thomas Greanias
Monday's Lie by Jamie Mason