Mosby's 2014 Nursing Drug Reference (269 page)

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

miconazole

(mi-kon′a-zole)

Oravig

miconazole nitrate

Desenex, Femizol-M, Fungoid, Tincture, Lotrimin AF, Micatin, Micozole, Monistat-1, Monistat-3, Monistat-7, M-Zole 3, M-Zole 7, Tetterine, Ting, Vagistat-1, Zeasorb-AF

Func. class.:
Antifungal

Chem. class.:
Imidazole

Do not confuse:
miconazole
/clotrimazole/metroNIDAZOLE

ACTION:

Antifungal activity results from disruption of cell membrane permeability

USES:

Treatment of topical fungal infection, vulvovaginal candidiasis; athlete’s foot (tinea pedis), jock itch (tinea cruris), and ringworm (tinea corporis)

CONTRAINDICATIONS:

Hypersensitivity to this product or imidazoles; pregnancy first trimester(vaginal)

Precautions:
Breastfeeding, children

DOSAGE AND ROUTES
Calculator
Tinea corporis, cruris, pedis; cutaneous candidiasis

• Adult/child >2 yr:
TOP
apply bid × 2-4 wk

Tinea versicolor

• Adult/child >2 yr:
TOP
use × 2 wk, apply sparingly every day

Vulvovaginal candidiasis

• Adult/child ≥12 yr:
VAG
1 applicatorful of Monistat-7 (100 mg) or 1 supp (100 mg) at bedtime × 7 days, repeat if needed, or Monistat-3 (200 mg) × 3 days or a 1200 mg supp × 1 day

Available forms:
Topical cream, ointment, solution, lotion, powder, aerosol, powder 2%; aerosol spray 2%; vag cream 2, 4%; vag supp 100, 200, 1200 mg

Administer:
Topical route

• 
Topical skin products are not for intravaginal therapy and are for external use only; do not use skin products near the eyes, nose, or mouth

• 
Wash hands before and after use; wash affected area and gently pat dry

• 
Cream/Ointment/Lotion/Solution:
Apply a thin film to the cleansed affected area; massage gently into affected areas

• 
Solution Formulations:
Apply a thin film to the cleansed affected area; massage gently into affected areas; if using a solution-soaked pledget, patient may use more than 1 pledget per application as needed to treat affected areas, but each pledget should be used only once and then discarded

• 
Intravaginal Route:
Only use dosage formulations specified for intravaginal use; intravaginal dosage forms are not for topical therapy; do not ingest

• 
Suppository:
Unwrap vaginal ovule (suppository) before insertion; use applicator(s) supplied by the manufacturer

• 
Cream:
Use applicator(s) supplied by the manufacturer

SIDE EFFECTS

CNS:
Headache

GU:
Pruritus, irritation, vaginal burning

INTEG:
Burning, dermatitis, rash

NURSING CONSIDERATIONS
Assess:
Allergic reaction:

• 
Assess for hypersensitivity, product may need to be discontinued

Infection:

• 
Assess for severity of infection

Evaluate:

• 
Decreasing severity of infection

Teach patient/family:
Topical route

• 
That topical skin products are not for intravaginal therapy and are for external use only; not to use skin products near the eyes, nose, or mouth

• 
To wash hands before and after use; wash affected area and gently pat dry

• 
Cream/Ointment/Lotion/Solution:
To apply a thin film to the cleansed affected area and massage gently into affected areas

• 
Solution Formulations:
To shake well before use, apply a thin film to the cleansed affected area, and massage gently into affected areas

Intravaginal route

• 
To only use dosage formulations specified for intravaginal use; not to ingest intravaginal dosage forms

• 
Suppository:
To unwrap vaginal ovule (suppository) before inserting; to use applicator(s) supplied by the manufacturer

• 
Cream:
To use applicator(s) supplied by the manufacturer

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

midazolam (Rx)

(mid′ay-zoe-lam)

Func. class.:
Sedative, hypnotic, antianxiety

Chem. class.:
Benzodiazepine, short-acting

 

Controlled Substance Schedule IV
ACTION:

Depresses subcortical levels in CNS; may act on limbic system, reticular formation; may potentiate γ-aminobutyric acid (GABA) by binding to specific benzodiazepine receptors

USES:

Preoperative sedation, general anesthesia induction, sedation for diagnostic endoscopic procedures, intubation, anxiety

Unlabeled uses:
Refractory status epilepticus, alcohol withdrawal

CONTRAINDICATIONS:

Pregnancy (D), hypersensitivity to benzodiazepines, acute closed-angle glaucoma, status asthmaticus

Precautions:
Breastfeeding, children, geriatric patients, COPD, CHF, chronic renal failure, chills, debilitated, hepatic disease, shock, coma, alcohol intoxication

 

Black Box Warning:

Neonates (contains benzyl alcohol), IV administration, respiratory depression/insufficiency

DOSAGE AND ROUTES
Calculator
Preoperative sedation

• Adult and child ≥12 yr:
IM
0.07-0.08 mg/kg 1/2-1 hr before general anesthesia

• Child 6 yr-11 yr:
IV
0.025-0.05 mg/kg; total dose of 0.4 mg/kg may be necessary

• Child 6 mo-5 yr:
IV
0.05-0.1 mg/kg; total dose of 0.6 mg/kg may be necessary

• Child 1-6 mo:
IM
0.1-0.15 mg/kg; may give up to 0.5 mg/kg if needed, max 10 mg

Induction of general anesthesia

• Adult >55 yr:
(ASA I/II)
IV
150-300 mcg/kg over 30 sec; (ASA III/IV) limit dose to 250 mcg/kg (nonpremedicated) or 150 mcg/kg (premedicated)

• Adult <55 yr:
IV
200-350 mcg/kg over 20-30 sec; if patient has not received premedication, may repeat by giving 20% of original dose; if patient has received premedication, reduce dose by 50 mcg/kg

• Child:
No safe and effective dose established; however, doses of 50-200 mcg/kg
IV
have been used

Continuous infusion for intubation (critical care)

• Adult:
IV
0.01-0.05 mg/kg over several min; repeat at 10- to 15-min intervals until adequate sedation then 0.02-0.10 mg/kg/hr maintenance; adjust as needed

• Child:
IV
0.05-0.2 mg/kg over 2-3 min then 0.06-0.12 mg/kg/hr by cont inf; adjust as needed

• Neonate:
IV
0.03-0.06 mg/kg/hr, titrate using lowest dose

Status epilepticus (unlabeled)

• Child and infant >2 mo:
IV
0.15 mg/kg then
CONT IV
1 mcg/kg/min, titrate upward q5min until seizures controlled

Alcohol withdrawal (unlabeled)

• Adult:
IV
1-5 mg q1-2hr (mild-moderate symptoms);
CONT IV INF
1-20 mg q1-2hr (delirium tremens)

Available forms:
Inj 1, 5 mg/ml, syr 2 mg/ml

Administer:
PO route

• 
Remove cap of press-in bottle adaptor, push adaptor into neck of bottle; close with cap; remove cap, insert tip of dispenser, insert into adaptor; turn upside-down, withdraw correct dose; place in mouth

IM route

• 
IM deep into large muscle mass

IV route

• 
May be given diluted or undiluted

• 
After diluting with D
5
W or 0.9% NaCl to 0.25 mg/ml; give over 2 min (conscious sedation) or over 30 sec (anesthesia induction)

Y-site compatibilities:
Abciximab, alfentamil, amikacin, amiodarone, argatroban, atracurium, atropine, aztreonam, benzotropine, calcium gluconate, ceFAZolin, cefotaxime, cefOXitine, cefTRIAXone, cimetidine, ciprofloxacin, CISplatin, clindamycin, cloNIDine, cyanocobalamin, cycloSPORINE, DACTINomycin, digoxin, diltiazem, diphenhydrAMINE, DOCEtaxal, DOPamine, doxycyclin, enalaprilat, EPINEPHrine, erythromycin, esmolol, etomidate, etoposide, famotidine, fentaNYL, fluconazole, folic acid, gatifloxacin, gemcitabine, gentamicin, glycopyrrolate, granisetron, heparin, hetastarch, HYDROmorphone, hydrOXYzine, inamrinone, isoproterenol, labetalol, lactated Ringer’s, levofloxacin, lidocaine, linezolid, LORazepam, magnesium, mannitol, meperdine, methadone, methyldopa, methylPREDNISolone, metoclopromide, metomolol, metroNIDAZOLE, milrinone, morphine, nalbuphine, naloxone, niCARdipine, nitroglycerin, nitroprusside, norepinephrine, ondansetron, oxacillin, oxytocin, PACLitaxel, palonasetron, pancuronium, papaverin, phytonadione, piperacillin, potassium chloride, propanolol, protamine, pyridoxine, ranitidine, remifentanil, sodium nitroprusside, succinylcholine, SUFentanil, teniposide, theophylline, thiotepa, ticarcillin, tobramycin, vancomycin, vasopressin, vecuronium, verap-amil, voriconazole

SIDE EFFECTS

CNS:
Retrograde amnesia, euphoria, confusion, headache, anxiety, insomnia, slurred speech, paresthesia, tremors, weakness, chills, agitation, paradoxic reactions

CV:
Hypotension, PVCs, tachycardia, bigeminy, nodal rhythm,
cardiac arrest

EENT:
Blurred vision, nystagmus, diplopia, loss of balance

GI:
Nausea, vomiting
, increased salivation, hiccups

INTEG:
Urticaria; pain, swelling, pruritus at inj site; rash

RESP:
Coughing,
apnea, bronchospasm, laryngospasm,
dyspnea,
respiratory depression

PHARMACOKINETICS

Protein binding 97%; half-life 1.8-6.4 hr, metabolized in liver; metabolites excreted in urine; crosses placenta, blood-brain barrier

PO:
Onset 20-30 min

IM:
Onset 15 min, peak 1/2-1 hr, duration 2-3 hr

IV:
Onset 3-5 min, onset of anesthesia 1½-2½ min, duration 2 hr

INTERACTIONS

Increase:
hypotension—antihypertensives, opiates, alcohol, nitrates

Increase:
extended half-life—CYP3A4 inhibitors (cimetidine, erythromycin, ranitidine)

Increase:
respiratory depression—other CNS depressants, alcohol, barbiturates, opiate analgesics, verapamil, ritonavir, indinavir, fluvoxaMINE

Decrease:
midazolam metabolism—CYP3A4 inducers (azole antifungals, theophylline)

Drug/Herb

Increase:
sedation—kava, valerian

Decrease:
midazolam effect—St. John’s wort

Drug/Food

Increase:
(PO) midazolam effect—grapefruit juice

NURSING CONSIDERATIONS
Assess:

• 
B/P, pulse, respirations during IV; emergency equipment should be nearby

• 
Inj site for redness, pain, swelling

• 
Degree of amnesia in geriatric patients; may be increased

• 
Anterograde amnesia

• 
Vital signs for recovery period in obese patients; half-life may be extended

 

Black Box Warning:

Respiratory depression insufficiency:
apnea, respiratory depression that may be increased in geriatric patients

Perform/provide:

• 
Assistance with ambulation until drowsy period ends

• 
Storage at room temp; protect from light

• 
Immediate availability of resuscitation equipment, O
2
to support airway; do not give by rapid bolus

Evaluate:

• 
Therapeutic response: induction of sedation, general anesthesia

Teach patient/family:

• 
That amnesia occurs; that events may not be remembered

TREATMENT OF OVERDOSE:

Flumazenil, O
2

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