Mosby's 2014 Nursing Drug Reference (332 page)

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procarbazine (Rx)

(proe-kar′ba-zeen)

Matulane

Func. class.:
Antineoplastic, alkylating agent

Chem. class.:
Hydrazine derivative

ACTION:

Inhibits DNA, RNA, protein synthesis; has multiple sites of action; nonvesicant

USES:

Lymphoma, Hodgkin’s disease, cancers resistant to other therapy

Unlabeled uses:
Brain, lung malignancies; other lymphomas; multiple myeloma, malignant melanoma, polycythemia vera

CONTRAINDICATIONS:

Pregnancy (D), breastfeeding, hypersensitivity, thrombocytopenia, bone marrow depression

Precautions:
Cardiac/renal/hepatic disease, radiation therapy, seizure disorder, anemia, bipolar disorder, Parkinson’s disease

 

Black Box Warning:

Requires a specialized care setting and an experienced clinician

DOSAGE AND ROUTES
Calculator

• Adult:
PO
2-4 mg/kg/day for 1st wk; maintain dosage of 4-6 mg/kg/day until platelets, WBC fall; after recovery, 1-2 mg/kg/day

• Child:
PO
50 mg/m
2
/day for 7 days then 100 mg/m
2
until desired response, leukopenia, or thrombocytopenia occurs; 50 mg/m
2
/day maintenance after bone marrow recovery

Available forms:
Caps 50 mg

Administer:

• 
In divided doses and at bedtime to minimize nausea and vomiting

• 
Nonphenothiazine antiemetic 30-60 min before product and 4-10 hr after treatment to prevent vomiting

SIDE EFFECTS

CNS:
Headache, dizziness, insomnia, hallucinations, confusion,
coma,
pain, chills, fever, sweating, paresthesias,
seizures,
peripheral neuropathy

EENT:
Retinal hemorrhage, nystagmus, photophobia, diplopia, dry eyes

GI:
Nausea, vomiting
, anorexia, diarrhea, constipation, dry mouth, stomatitis, elevated hepatic enzymes

GU:
Azoospermia, cessation of menses

HEMA:
Thrombocytopenia, anemia, leukopenia, myelosuppression, bleeding tendencies,
purpura, petechiae, epistaxis,
hemolysis

INTEG:
Rash
, pruritus, dermatitis, alopecia, herpes, hyperpigmentation

MS:
Arthralgias, myalgias

RESP:
Cough, pneumonitis, hemoptysis

SYST:
Secondary malignancy

PHARMACOKINETICS

Half-life 1 hr; concentrates in liver, kidney, skin; metabolized in liver, excreted in urine

INTERACTIONS

 
Increase:
hypotension—meperidine; do not use together

Increase:
neuroleptic malignant syndrome, seizures, hyperpyrexia—alcohol, MAOIs, tricyclics, sympathomimetic products, SSRIs, SNRIs

Increase:
hypertension—guanethidine, levodopa, methyldopa, reserpine, caffeine

 
Life-threatening hypertension: sympathomimetics

Increase:
bleeding risk—NSAIDs, anticoagulants, platelet inhibitors, thrombolytics

Increase:
CNS depression—barbiturates, antihistamines, opioids, hypotensive agents, phenothiazines

Drug/Food

• 
Hypertensive crisis: tyramine foods

NURSING CONSIDERATIONS
Assess:

• 
Bone marrow suppression:
CBC, differential, platelet count weekly; withhold product if WBC is <4000/mm
3
or platelet count is <100,000/mm
3
; notify prescriber

• 
Hepatic/renal disease:
can cause accumulation of drug, increased toxicity; renal studies: BUN; serum uric acid; urine CCr; electrolytes before, during therapy; I&O ratio, report fall in urine output to <30 ml/hr; hepatic studies before, during therapy: bilirubin, AST, ALT, alk phos, LDH prn or monthly

• 
Monitor temp; fever may indicate beginning infection

 

Black Box Warning:

To be used only in a specialized care setting with emergency equipment

 

Black Box Warning:

To be given only by an experienced clinician knowledgeable in cytotoxic products

• 
CNS changes: confusion, paresthesias, neuropathies; product should be discontinued

 
Tyramine foods in diet; hypertensive crisis can occur

 
Toxicity:
facial flushing, epistaxis, increased PT, thrombocytopenia; product should be discontinued

• 
Bleeding:
hematuria, guaiac stools, bruising or petechiae, mucosa or orifices q8hr

• 
Effects of alopecia on body image; discuss feelings about body changes

• 
Jaundiced skin, sclera; dark urine, clay-colored stools, itchy skin, abdominal pain, fever, diarrhea

• 
Buccal cavity for dryness, sores or ulceration, white patches, oral pain, bleeding, dysphagia

• 
GI symptoms: frequency of stools, cramping

• 
Acidosis, signs of dehydration:
rapid respirations, poor skin turgor, decreased urine output, dry skin, restlessness, weakness

Evaluate:

• 
Therapeutic response: decreasing malignancy

Teach patient/family:

• 
To report any complaints, side effects to nurse or prescriber: CNS changes, diarrhea, cough, SOB, fever, chills, sore throat, bleeding, bruising, vomiting blood; black, tarry stools

• 
That hair may be lost during treatment and wig or hairpiece may make patient feel better; that new hair may be different in color, texture

• 
To avoid sunlight or UV exposure; to wear sunscreen or protective clothing

• 
To avoid foods with citric acid, hot or rough texture

• 
To report any bleeding, white spots, ulcerations in mouth to prescriber; to examine mouth daily

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

• 
To use effective contraception; to avoid breastfeeding; that product may cause infertility

• 
To avoid the ingestion of alcohol, caffeine, tyramine-containing foods; that cold, hay fever, and weight-reducing products may cause serious product interactions; to avoid smoking

• 
To avoid crowds, persons with infections if granulocytes are low

• 
To avoid vaccines

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

prochlorperazine (Rx)

(proe-klor-pair′a-zeen)

Compro

Func. class.:
Antiemetic, antipsychotic

Chem. class.:
Phenothiazine, piperazine derivative

Do not confuse:
prochlorperazine
/chlorproMAZINE

ACTION:

Decreases dopamine neurotransmission by increasing dopamine turnover through the blockade of the D
2
somatodendritic autoreceptor in the mesolimbic system

USES:

Nausea, vomiting, psychotic disorders

Unlabeled uses:
Migraine

CONTRAINDICATIONS:

Hypersensitivity to phenothiazines, coma; infants, neonates, children <2 yr or <20 lb; surgery

Precautions:
Pregnancy (C), breastfeeding, geriatric patients, seizure, encephalopathy, glaucoma, hepatic disease, Parkinson’s disease, BPH

 

Black Box Warning:

Increased mortality in elderly patients with dementia-related psychosis

DOSAGE AND ROUTES
Calculator
Postoperative nausea/vomiting

• Adult:
IM
5-10 mg 1-2 hr before anesthesia; may repeat after 30 min;
IV
5-10 mg 15-30 min before anesthesia;
IV INF
20 mg/L D
5
W or
NS
15-30 min before anesthesia, max 40 mg/day

Severe nausea/vomiting

• Adult:
PO
5-10 mg tid-qid;
SUS REL
15 mg/day in
AM
or 10 mg q12hr;
RECT
25 mg/bid;
IM
5-10 mg q3-4hr prn, max 40 mg/day

• Child 18-39 kg:
PO
2.5 mg tid or 5 mg bid;
IM
0.132 mg/kg q3-4hr prn, max 15 mg/day

• Child 14-17 kg:
PO/RECT
2.5 mg bid-tid;
IM
0.132 mg/kg q3-4hr prn, max 10 mg/day

• Child 9-13 kg:
PO/RECT
2.5 mg/day-bid;
IM
0.132 mg/kg q3-4hr prn, max 7.5 mg/day

Antipsychotic

• Adult and child

12 yr:
PO
5-10 mg tid-qid; may increase q2-3days, max 150 mg/day;
IM
10-20 mg q2-4hr up to 4 doses then 10-20 mg q4-6hr

• Child 2-12 yr:
PO
2.5 mg bid-tid;
IM
0.132 mg/kg change to oral ASAP

Antianxiety

• Adult and child

12 yr:
PO
5 mg tid-qid, max 20 mg/day

• Child 2-12 yr:
IM
0.132 mg/kg change to oral ASAP

Available forms:
Tabs 5, 10 mg; supp 25 mg

Administer:

• 
Avoid other CNS depressants

IM route

• 
IM inj in large muscle mass; aspirate to avoid IV administration

• 
Keep patient recumbent for 1/2 hr

Direct IV route

• 
No dilution needed, inject directly in a vein ≤5 mg/min, do not give as bolus

Intermittent IV INF route

• 
May dilute 20 mg/L NaCl and give as inf 15-30 min before anesthesia induction

Syringe compatibilities:
Atropine, butorphanol, chlorproMAZINE, cimetidine, diamorphine, diphenhydrAMINE, droperidol, fentaNYL, glycopyrrolate, hydrOXYzine, meperidine, metoclopramide, nalbuphine, pentazocine, perphenazine, promazine, promethazine, ranitidine, scopolamine, SUFentanil

Y-site compatibilities:
Amsacrine, calcium gluconate, cisatracurium, CISplatin, cladribine, cyclophosphamide, cytarabine, DOXOrubicin, DOXOrubicin liposome, fluconazole, granisetron, heparin, hydrocortisone, melphalan, methotrexate, ondansetron, PACLitaxel, potassium chloride, propofol, remifentanil, sargramostim, SUFentanil, teniposide, thiotepa, vinorelbine, vit B/C

SIDE EFFECTS

CNS:
Neuroleptic malignant syndrome,
extrapyramidal reactions, tardive dyskinesia, euphoria
,
depression,
drowsiness
, restlessness, tremor, dizziness, headache

CV:
Circulatory failure, tachycardia,
hypotension, ECG changes

EENT:
Blurred vision

GI:
Nausea, vomiting, anorexia, dry mouth, diarrhea, constipation, weight loss, metallic taste, cramps

HEMA:
Agranulocytosis

MISC:
Impotence

RESP:
Respiratory depression

PHARMACOKINETICS

Metabolized by liver; excreted in urine, breast milk; crosses placenta; 91%-99% protein binding

PO:
Onset 30-40 min, duration 3-4 hr

RECT:
Onset 60 min, duration 3-4 hr

IM:
Onset 10-20 min, duration 4-6 hr; children: 12 hr

INTERACTIONS

Increase:
anticholinergic action—anticholinergics, antiparkinson products, antidepressants

Increase:
CNS depression—CNS depressants

Increase:
serotonin syndrome, neuroleptic malignant syndrome—SSRIs, SNRIs

Decrease:
prochlorperazine effect—barbiturates, antacids, lithium

Drug/Herb

Increase:
CNS depression—chamomile, hops, kava, St. John’s wort, valerian

Increase:
EPS—kava

Drug/Lab Test

Increase:
LFTs, cardiac enzymes, cholesterol, blood glucose, prolactin, bilirubin, PBI,
131
I, alk phos, leukocytes, granulocytes, platelets

Decrease:
hormones (blood and urine)

False positive:
pregnancy tests, urine bilirubin

False negative:
urinary steroids, 17-OHCS, pregnancy tests

NURSING CONSIDERATIONS
Assess:

• 
EPS:
abnormal movement, tardive dyskinesia, akathisia

• 
VS, B/P; check patients with cardiac disease more often

 
Neuroleptic malignant syndrome:
seizures, hypo/hypertension, fever, tachycardia, dyspnea, fatigue, muscle stiffness, loss of bladder control; notify prescriber immediately

 
CBC, LFTs during course of treatment; blood dyscrasias, hepatotoxicity may occur

• 
Respiratory status before, during, after administration of emetic; check rate, rhythm, character; respiratory depression can occur rapidly among geriatric or debilitated patients

Evaluate:

• 
Therapeutic response: absence of nausea, vomiting; reduced anxiety, agitation, excitability

Teach patient/family:

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

• 
To avoid alcohol

• 
Not to double or skip doses

• 
That urine may be pink to reddish brown

• 
That suppositories may contain coconut/palm oil

• 
To report dark urine, clay-colored stools, bleeding, bruising, rash, blurred vision

• 
To avoid sun; wear sunscreen, protective clothing

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