Mosby's 2014 Nursing Drug Reference (348 page)

 

Controlled Substance Schedule II
ACTION:

Inhibits ascending pain pathways in limbic system, thalamus, midbrain, hypothalamus

USES:

In combination with other products for general anesthesia to provide analgesia

CONTRAINDICATIONS:

Hypersensitivity

Precautions:
Pregnancy (C), breastfeeding, children <12 yr, geriatric patients, increased intracranial pressure, acute MI, severe heart disease, GI/renal/hepatic disease, asthma, respiratory conditions, seizures disorders, bradyarrhythmias

DOSAGE AND ROUTES
Calculator

• Adult:
Induction
IV
0.5-1 mcg/kg/min with hypnotic or volative agent; maintenance with isoflurane (0.4-1.5 MAC) or propofol (100-200 mcg/kg/min);
CONT INF
0.25-0.4 mcg/kg/min

• Child 1-12 yr:
CONT IV INF
0.25 mcg/kg/min with isoflurane

• Full-term neonate and infant up to 2 mo:
CONT IV INF
0.4 mcg/kg/min with nitrous oxide

Available forms:
Powder for inj lyophilized 1, 2, 5 mg

Administer:

• 
Add 1 ml diluent per mg remifentanil

• 
Shake well; further dilute to a final concentration of 20, 25, 50 or 250 mcg/mg

• 
Interruption of inf results in rapid reversal (no residual opioid effect within 5-10 min)

Direct IV route

• 
To be used only during maintenance of general anesthesia; inject into tubing close to venous cannula; give to nonintubated patients over 30-60 sec

Continuous IV INF route

• 
Use inf device, max 16 hr; do not use same tubing as blood, do not admix

Y-site compatibilities:
Acyclovir, alfentanil, amikacin, aminophylline, ampicillin, ampicillin/sulbactam, aztreonam, bumetanide, buprenorphine, butorphanol, calcium gluconate, ceFAZolin, cefepine, cefotaxime, cefoTEtan, cefOXitin, cefTAZidime, ceftizoxime, cefTRIAXone, cefuroxime, cimetidine, ciprofloxacin, cisatracurium, clindamycin, dexamethasone, digoxin, diltiazem, diphenhydrAMINE, DOBUTamine, DOPamine, doxacurium, doxycycline, droperidol, enalaprilat, EPINEPHrine, esmolol, famotidine, fentaNYL, fluconazole, furosemide, ganciclovir, gatifloxacin, gentamicin, haloperidol, heparin, hydrocortisone sodium succinate, HYDROmorphone, hydrOXYzine, imipenem-cilastatin, inamrinone, isoproterenol, ketorolac, lidocaine, LORazepam, magnesium sulfate, mannitol, meperidine, methylPREDNISolone sodium succinate, metoclopramide, metroNIDAZOLE, midazolam, morphine, nalbuphine, nitroglycerin, norepinephrine, ondansetron, phenylephrine, piperacillin, potassium chloride, procainamide, prochlorperazine, promethazine, ranitidine, SUFentanil, theophylline, thiopental, ticarcillin/clavulanale, tobramycin, vancomycin, zidovudine

Solution compatibilities:
D
5
, 0.45% NaCl, LR, D
5
LR, 0.9% NaCl

SIDE EFFECTS

CNS:
Drowsiness,
dizziness
, confusion,
headache
, sedation, euphoria, delirium, agitation, anxiety

CV:
Palpitations,
bradycardia
, change in B/P, facial flushing, syncope,
asystole

EENT:
Tinnitus, blurred vision, miosis, diplopia

GI:
Nausea, vomiting
, anorexia, constipation, cramps, dry mouth

GU:
Urinary retention, dysuria

INTEG:
Rash, urticaria, bruising, flushing, diaphoresis, pruritus

MS:
Rigidity

RESP:
Respiratory depression, apnea

PHARMACOKINETICS

70% protein binding, terminal half-life 3-10 min, excreted in urine; onset: 1-3 min

INTERACTIONS

Increase:
respiratory depression, hypotension, profound sedation: alcohol, sedatives, hypnotics, other CNS depressants; antihistamines, phenothiazines, MAOIs

Drug/Herb

Increase:
CNS depression—kava

NURSING CONSIDERATIONS
Assess:

• 
I&O ratio; check for decreasing output; may indicate urinary retention, especially in geriatric patients

• 
CNS changes; dizziness, drowsiness, hallucinations, euphoria, LOC, pupil reaction

• 
GI status: nausea, vomiting, anorexia, constipation

• 
Allergic reactions: rash, urticaria

• 
Respiratory dysfunction:
respiratory depression, character, rate, rhythm; notify prescriber if respirations <12/min; CV status; bradycardia, syncope

Perform/provide:

• 
Storage in light-resistant area at room temp

Evaluate:

• 
Therapeutic response: maintenance of anesthesia

Teach patient/family:

• 
To call for assistance when ambulating or smoking; that drowsiness, dizziness may occur

• 
To make position changes slowly to prevent orthostatic hypotension

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

repaglinide (Rx)

(re-pag′lih′nide)

Gluconorm
, Prandin

Func. class.:
Antidiabetic

Chem. class.:
Meglitinide

ACTION:

Causes functioning β-cells in pancreas to release insulin, thereby leading to a drop in blood glucose levels; closes ATP-dependent potassium channels in the β-cell membrane; this leads to the opening of calcium channels; increased calcium influx induces insulin secretion

USES:

Type 2 diabetes mellitus

CONTRAINDICATIONS:

Hypersensitivity to meglitinides; diabetic ketoacidosis, type 1 diabetes

Precautions:
Pregnancy (C), breastfeeding, children, geriatric patients, thyroid/cardiac disease, severe renal/hepatic disease, severe hypoglycemic reactions

DOSAGE AND ROUTES
Calculator

• Adult:
PO
1-2 mg with each meal, max 16 mg/day; adjust at weekly intervals; oral-hypoglycemic–naive patients or patients with A1c <8% should start with 0.5 mg with each meal

Renal/hepatic dose

• Adult:
PO
CCr 20-39 ml/min, 0.5 mg/day; titrate upward cautiously

Available forms:
Tabs 0.5, 1, 2 mg

Administer:

• 
Up to 15-30 min before meals; 2, 3, or 4×/day preprandially

• 
Skip dose if meal skipped; add dose if meal added

SIDE EFFECTS

CNS:
Headache, weakness
, paresthesia

ENDO:
Hypoglycemia

GI:
Nausea, vomiting, diarrhea, constipation, dyspepsia

INTEG:
Rash, allergic reactions

MISC:
Chest pain, UTI, allergy

MS:
Back pains, arthralgia

RESP:
URI, sinusitis, rhinitis, bronchitis

PHARMACOKINETICS

Completely absorbed by GI route; onset 30 min; peak 1 hr; duration <4 hr; half-life 1 hr; metabolized in liver; excreted in urine, feces (metabolites); crosses placenta; 98% protein bound

INTERACTIONS

 
Do not use with gemfibrozil

Increase:
repaglinide effect—CYP3A4, OATP101, CYP2C9 inhibitors

Increase:
in both—levonorgestrel/ethinyl estradiol

Increase:
repaglinide metabolism—CYP3A4 inducers: rifampin, barbiturates, carBAMazepine

Increase:
repaglinide effect—NSAIDs, salicylates, sulfonamides, chloramphenicol, MAOIs, coumarins, β-blockers, probenecid, gemfibrozil, simvastatin, fenofibrate, deferasirox

Decrease:
repaglinide metabolism—CYP3A4 inhibitors: antifungals (ketoconazole, miconazole), erythromycin, macrolides

Decrease:
repaglinide action—calcium channel blockers, corticosteroids, oral contraceptives, thiazide diuretics, thyroid preparations, estrogens, phenothiazines, phenytoin, rifampin, isoniazid, PHENobarbital, sympathomimetics

Drug/Herb

Increase:
antidiabetic effect—garlic, chromium, horse chestnut

Drug/Food

Decrease:
repaglinide level; give before meals

Drug/Lab Test

Increase/decrease:
glucose

NURSING CONSIDERATIONS
Assess:

 
Hypo/hyperglycemic reaction,
which can occur soon after meals: dizziness, weakness, headache, tremor, anxiety, tachycardia, hunger, sweating, abdominal pain, A1c, fasting, postprandial glucose during treatment

Perform/provide:

• 
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 family/patient:

• 
About technique for blood glucose monitoring; how to use 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 unless ordered by prescriber

• 
That diabetes is a lifelong illness; that product will not cure disease

• 
That all food included in diet plan must be eaten to prevent hypoglycemia; that if a meal is omitted, dose should be omitted; to have glucagon emergency kit available; to take repaglinide 15-30 min before meals 2, 3, or 4×/day; to carry emergency ID

TREATMENT OF OVERDOSE:

Glucose 25 g IV via dextrose 50% solution, 50 ml or 1 mg glucagon

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