Prevention of Antineoplastic Medication induced Nausea and ... presentation.pdf · Pathogenesis of...

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Prevention of Antineoplastic Medication induced Nausea and Vomiting in Pediatric Cancer Patients

Done by :Meznah Zaid Al-Mutairi

Pharm.D Candidate

PNU University College of Pharmacy

Introduction

Nausea and vomiting are common side effects for patients treated with systemicchemotherapy (70-80 %).

Prevention and control of nausea and vomiting (N&V) are critical in the treatment of cancer patients.

Important definition

Pathogenesis of Chemotherapy-Induced Nausea and Vomiting

Chemotherapy directly affects the higher neurologic centers in the central nervous system,the vomiting center located in the medulla oblongata, and peripheral neurologic receptorsin the small intestine, inducing the release of neurotransmitters such as substance Pand serotonin, which in turn signal the vomiting center, with the resultant CINV.

Emetic Reflex

Dopamine

Serotonin

CannabinoidsSubstance P

Small Intestine

Importance of control of nausea and vomiting

It effects patients’ quality of life.

The compliance of treatment was decreased.

It causes metabolic changes.

It effects functional and intelligence capacity of patients.

It causes anorexia and nutritional deficiency.

Aspiration pneumonia and oesophagus damage might be seen.

Effective chemotherapy treatments were discontinued because of this side effect.

Grade of nausea and vomiting

National Cancer Institute Classification of Nausea and Vomiting 2013

Types of AINV

Acute antineoplastic-induced nausea and vomiting:

nausea, vomiting, and/or retching that occurs within 24 hours following the administration of an antineoplastic therapy.

Delayed antineoplastic-induced nausea and vomiting:

nausea, vomiting, and/or retching that occur more than 24 hours after and usually within 7 days of administration of an antineoplastic therapy.

Anticipatory antineoplastic-induced nausea and vomiting:

nausea, vomiting, and/or retching that occurs within 24 hours prior to administration of antineoplastic therapy (After a negative past experience with chemotherapy).

The POGO Antineoplastic–induced Nausea and Vomiting Guideline 2013

Types of AINV

Breakthrough antineoplastic-induced nausea and vomiting:

Occurs despite patient being treated with preventive therapy.

Refractory antineoplastic-induced nausea and vomiting:

Occur during subsequent cycles of chemotherapy when antiemetic prophylaxis has failed in earlier cycles.

Antiemetic Agents in Pediatric Cancer Patients

1- Serotonin (5-HT3) receptor antagonists.

2- Corticosteroids.

3- Neurokinin-1 receptor antagonists.

4- Benzamide analogs.

5- Phenothiazines.

6-Cannabinoids

Mechanism of action

Emetic Reflex

Dopamine

Serotonin

CannabinoidsSubstance P

Small Intestine

BenzamideanalogsMetoclopramide

serotonin (5-HT3) receptor

antagonistsGranisetronondansetron

Neurokinin-1 receptor antagonistsAprepitant fosaprepitant Phenothiazines

Prochlorperazinechlorpromazine

CannabinoidsDronabinol Nabilone

1-serotonin (5-HT3) receptor antagonists

Granisetron and ondansetron :

(5-HT3) serotonin receptor antagonists haveequivalent efficacy and safety.

Combination with corticosteroids increasedtheir efficacy.

(5-HT3) serotonin receptor antagonists are noteffective for preventing delayed emesis.

1-serotonin (5-HT3) receptor antagonists

Side effects :

-Mild headache. -Transient elevation serum aminotreansferases -Constipation . -QT prolongation .

Drug-drug interaction:

Tramadol.

2-Corticosteroids

Dexamethasone

Unkown ,thought to act by inhibiting prostaglandin synthesis in thecortex.

Adverse effect :

associated with single doses and short courses of steroids are infrequent , they may include euphoria , anxiety ,insomnia , increased appetite and mild fluid retention.

Doxorubicin.

Ifosfamide.

3- Neurokinin-1 receptor antagonists

Aprepitant or fosaprepitant:

Aprepitant is approved for use in comination with other antiemetic drugs for preventing acute and delayednausea and vomiting associated with initial and repeat courses of chemotherapy known to cause these problems ,including high-dose cisplatin .

Aprepitant improved the overall complete response (defined as no emetic episodes and no use of rescue therapy )by about 20% when added to a serotonin (5-HT3) receptor antagonists and dexamethasone.

Fosaprepitant vs. Aprepitant :

Intravenous single-day fosaprepitant is now regarded as equivalent to 3 days of aprepitant for HEC .

aprepitant (125 mg PO on day 1 then 80 mg on days 2-3) or fosaprepitant (150 mg IV on day 1) .

Fosaprepitant was not inferior to aprepitant for CR in the overall (71.9% vs. 72.3%) .

Adverse effect :

Asthenia ,dizziness and hiccups.

Dexamethasone.

Imatinib.

4- Benzamide analogs

Metoclopramide

Adverse effect :

Mild sedation , diarrhea and extrapyramidal reactions (eg. Dystonia , akathisia ).

Given with benztropine (0.02-0.05 mg/kg/dose 1-2 times daily) or Diphenhydramine (0.5-1 mg/kg/dose IV) to avoid extrapyramidal reactions .

5- phenothiazines

Prochlorperazine ,chlorpromazine and promethazine

Chlorpromazine is often preferred in children because it is associated with fewer extrapyramidal reactions than prochlorperazine.

Adverse events :

Drowsiness ,hypotension , akathisia and dystonia.

6-Cannabinoids

Dronabinol and Nabilone

Adverse events :

Drowsiness , Dizziness , Euphoria , orthostatic hypotension , ataxia and appetite stimulation.

Non-Pharmacologic Treatment

Eat the foods smaller and more frequent.

Drink the liquids one hour before or after meals.

Eat the cracker, toast, salty biscuit if the emesis occur in the morning.

Walking short distance outdoors and inhale air deeply and slowly.

Keep away from odors of foods, perfüme and fume.

Do not sleep immediately after dinner.

Begin eating light foods (soup, yoghurt) after control nause and vomitting.

POGO,2013

Emetogenic Potential of Antineoplastic agents

Emetogenicity : the propensity of an agent to cause nausea, vomiting or retching.

Current model includes four level for intravenous chemotherapy and two level for oral chemotherapy.

Level for intravenous chemotherapy (minimal , low, moderate and high emetogenic risk ) and for oral chemotherapy (prophylaxis recommended and as needed).

high emetogenic Antineoplastic agents

Classification of Emetogenic Potential of Antineoplastic Medication in Pediatric Cancer Patient

This is a purely synthetic administered via SC injection, once daily .

It has predictable anticoagulant activity and does not require monitoring.

NO significant drug interactions were reported.

Mechanism of action:

it is indirect inhibitors of Xa. Unlike heparin and LMWHs, it has no effect on thrombin.

high emetogenic treatment algorithm

Antiemetic Dosage Recommendations for children receiving HIGHLY Emetogenic Antineoplastic Therapy

Duration of Antiemetic agents for children receiving HIGHLY Emetogenic Antineoplastic Therapy

NK1 receptor antagonist (Aprepitant day 1-3) and

5-HT3 receptor antagonist PO/IV on day 1 only and

dexamethasone PO/IV on days 1-3 or 1-4 .

The POGO Antineoplastic–induced Nausea and Vomiting Guideline 2013Medscape ,2014

Moderate emetogenic Antineoplastic agents

Moderate emetogenic treatment algorithm

Antiemetic Dosage Recommendations for children receiving Moderately Emetogenic Antineoplastic Therapy

Duration of Antiemetic agents for children receiving Moderately Emetogenic Antineoplastic Therapy

5-HT3 receptor antagonist PO/IV on day 1 only and

dexamethasone PO/IV on days 1-3 or 1-4.

The POGO Antineoplastic–induced Nausea and Vomiting Guideline 2013Medscape ,2014

Low emetogenic Antineoplastic agents

Low emetogenic treatment algorithm

Antiemetic Dosage Recommendations for children receiving LOW Emetogenic Antineoplastic Therapy

Minimal emetogenic Antineoplastic agents

Minimal emetogenic treatment algorithm

For multiple agent and multi-day antineoplastic therapy –refer to recommendations in Low emetic risk table.

Lexicomp ,2014

Thank You

Prevention of Antineoplastic Medication induced Nausea and ... presentation.pdf · Pathogenesis of...

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