Mosby's 2014 Nursing Drug Reference (332 page)

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

Other books

Traitor by Duncan Falconer
Final Assault by Kristine Kathryn Rusch, Dean Wesley Smith
Eternal Temptation by T. A. Grey
An Improper Proposal by Cabot, Patricia
Play Dead by Peter Dickinson
Ride by Cat Johnson
The Deed by Keith Blanchard