dr. mohammad aljawadi pharmd, msc, phd jamilah alsaidan msc phcl 477 clinical pharmacy department...
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Chemotherapy Induced Nausea and Vomiting
Dr. Mohammad Aljawadi PharmD, Msc, PhD
Jamilah Alsaidan Msc
PHCL 477
Clinical Pharmacy Department
College of Pharmacy
King Saud University
March 2015
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The three consecutive phases of emesis are:
Chemotherapy Induced Nausea and Vomiting
Emesis
Nausea Retching Vomiting
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• Inclination to vomit• Feeling in throat or epigastric region
alerting individual vomiting is imminent. Nausea
• Is the labored movement of the abdominal and thoracic muscles before vomitingRetching
• The forceful expulsion of gastric contents through the mouth due to GI retro-peristalsis
Vomiting
Chemotherapy Induced Nausea and Vomiting
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Vomiting is triggered by afferent impulses to the vomiting center, a nucleus of cells in the medulla
Impulses are received from sensory centers, such as:◦ The chemoreceptor trigger zone (CTZ)◦Cerebral cortex◦Visceral afferents from the pharynx and GI tract
Etiology
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Visceral afferents from the pharynx and GI tract
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Numerous neurotransmitter receptors are located in the vomiting center, CTZ, and GI tract
Cholinergic, histaminic, dopaminergic, opiate, serotonergic, neurokinin, and benzodiazepine receptors
Three main causes of vomiting ◦ Stimulation of chemoreceptor trigger zone in the 4th ventricle◦ Stimulation of the GI tract◦ Sensory input and memory
Etiology
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Nausea and or / vomiting may be part of the symptom complex for a variety of gastrointestinal, cardiovascular, infectious, neurologic, metabolic or psychogenic processes
Chemotherapy Induced Nausea and Vomiting
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N & V may be a feature of such conditions as pregnancy, may follow ◦ operative procedures◦ administration of certain medications such as those used in
cancer chemotherapy or inhalation of noxious odors
Chemotherapy Induced Nausea and Vomiting
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Gastrointestinal mechanisms◦ Mechanical obstruction:
e.g. Gastric outlet obstruction, Small bowel obstruction
◦ Functional gastrointestinal disorders: e.g.Gastroparesis, Non-ulcer dyspepsia, Chronic intestinal pseudo-obstruction, Irritable bowel syndrome
◦ Organic gastrointestinal disorders e.g Peptic ulcer disease, Pancreatitis, Pyelonephritis, Cholecystitis ,Cholangitis, Hepatitis
◦ Acute gastroenteritis ( Viral, Bacterial)
Specific etiologies
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Cardiovascular diseases◦Acute myocardial infarction
Miscellaneous causes◦ Pregnancy◦Noxious odors ◦Operative procedures
Neurologic processes◦Migraine headache◦Vestibular disorders
Specific etiologies
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Specific etiologies
Metabolic disorders◦ Diabetes mellitus (diabetic
ketoacidosis)◦ Renal disease (uremia)
Psychiatric causes◦ Anxiety disorders◦ Anorexia nervosa
Drug withdrawal◦ Opiates◦ Benzodiazepines
Therapy-induced causes◦ Cytotoxic chemotherapy◦ Radiation therapy◦ Anticonvulsant preparations◦ Opiates◦ Antibiotics
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Depending on severity of symptoms, patients may present in mild to severe distress
Symptoms◦ Simple: Self-limiting, resolves spontaneously and requires only
symptomatic therapy
◦Complex: Not relieved after administration of antiemetics; progressive deterioration of patient secondary to fluid-electrolyte imbalances; usually associated with noxious agents or psychogenic events
Clinical Presentation
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Signs◦ Simple: Patient complaint of queasiness or discomfort◦Complex: Weight loss; fever; abdominal pain
Laboratory tests◦ Simple: None◦Complex: Serum electrolyte concentrations; upper/lower GI
evaluation
Clinical Presentation
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Clinical Presentation
Other information◦ Fluid input and output◦Medication history◦Recent history of behavioral or visual changes, headache, pain,
or stress ◦ Family history positive for psychogenic vomiting
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Specific etiologies
Metabolic disorders◦ Diabetes mellitus (diabetic
ketoacidosis)◦ Renal disease (uremia)
Psychiatric causes◦ Anxiety disorders◦ Anorexia nervosa
Drug withdrawal◦ Opiates◦ Benzodiazepines
Therapy-induced causes◦ Cytotoxic chemotherapy◦ Radiation therapy◦ Anticonvulsant preparations◦ Opiates◦ Antibiotics
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Emetogenic potential of chemotherapy agents
HighModerateLowMinimal
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Chemotherapy Induced Nausea and Vomiting- Emetogenic potential of some cytotoxic agents
High (>90%) Carmustine Cisplatin Cyclophosphamide ≥1,500
mg/m2 Dacarbazine Dactinomycin Mechlorethamine Streptozotocin
Moderate (30–90%) Carboplatin Cytarabine >1 g/m2
Cyclophosphamide <1,500 mg/m2
Daunorubicin Doxorubicin Epirubicin Idarubicin Ifosfamide Irinotecan Oxaliplatin
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Chemotherapy Induced Nausea and Vomiting- Emetogenic potential of some cytotoxic agents Low (10–30%) Bortezomib Cetuximab Cytarabine ≤1 g/m2 Docetaxel Etoposide Fluorouracil Gemcitabine Methotrexate Mitomycin Mitoxantrone Paclitaxel Pemetrexed Topotecan Trastuzumab
Minimal (<10%) Bevacizumab Bleomycin Busulfan 2-Chlorodeoxyadenosine
Fludarabine Rituximab Vinblastine Vincristine Vinorelbine
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Non-Chemotherapy Etiologies of Nausea and vomiting in cancer patients◦ Fluid and electrolyte abnormalities
Hypercalcemia
◦ Volume depletion
◦ Adrenocortical insufficiency
◦ Drug Induced Opiates Antifungals Antibiotics
Chemotherapy Induced Nausea and Vomiting
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Other◦Uremia◦Metastases◦Gastrointestinal obstruction◦ Increased intracranial pressure◦ Peritonitis◦Radiation Therapy
Chemotherapy Induced Nausea and Vomiting
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The overall goal of antiemetic therapy is to prevent or eliminate nausea and vomiting◦ This should be accomplished without adverse events or with
clinically acceptable adverse effects◦ Simple nausea and vomiting prevention is achieved easily with
treatment◦ Patients with more complex problems require greater
assistance
Desired outcome of treatment
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General Approach to Treatment
Non drug Modalities Medication
Treatment Modalities
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The treatment choice depends on severity of the NV and associated conditions
The management of psychogenic vomiting is greatly dependent on psychological intervention
Underlying problems are complex and must be addressed
Treatment of underlying psychological disorder with its appropriate medications
E.g. Bulimia nervosa
Chemotherapy Induced Nausea and Vomiting
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Non drug modalities include Dietary, Psychological, or physical changes
Simple complaints- Avoid or intake in moderation troublesome food, beverage or odor
Behavioral interventions include relaxation biofeedback, self hypnosis, cognitive distraction, guided imagery, and systematic desensitization
Chemotherapy Induced Nausea and Vomiting- Non Drug Modalities
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Antiemetic drugs- both non-prescription and prescription are recommended
The treatment of simple nausea and vomiting usually requires minimal therapy. Drugs are usually effective in small, infrequently administered doses.
The management of complex nausea and vomiting, for example, in patients who are receiving cytotoxic chemotherapy, may require combination therapy.
Pharmacologic Therapy
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Many treatment options for clinician to choose from Factors that enable a clinician to discriminate between
medication options:◦ The suspected etiology of the symptoms◦ The frequency, duration, and severity of the episodes◦ The ability of the patient to use oral, rectal, injectable, or
transdermal medications◦ The success of previous antiemetic medication
Pharmacologic Therapy
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In relation to chemotherapy administration; Nausea or vomiting that occurs:
within 24 hours: Acute◦ Intensity peaks after 5-6 hours
after 24 hours: Delayed before chemo given: Anticipatory
Chemotherapy Induced Nausea and Vomiting
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The distinction between acute and delayed symptoms becomes blurred with respect to time of onset after several doses and for several consecutive days
Delayed symptoms are best described with cisplatin
Chemotherapy Induced Nausea and Vomiting
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Breakthrough vomiting occurs despite prophylactic treatment and /or requires additional rescue medications
Refractory emesis refers to emesis that occurs during treatment cycles when antiemetic prophylaxis and / or rescue therapy has failed in previous cycles
Chemotherapy Induced Nausea and Vomiting
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Factors to consider when selecting an antiemetic for CINV include the following:
1) The emetic risk of the chemotherapy agent or regimen
2) Patient specific factors3) Patterns of emesis after administration of specific
chemotherapy agents or regimens
Chemotherapy Induced Nausea and Vomiting- Factors to consider
The emetic risk of the agent is the most important and primary factor to consider when deciding IF you will administer prophylactic agents and WHICH antiemetic agent to select
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The combination of metoclopramide and dexamethasone was the most common regimen to prevent delayed nausea and vomiting before the availability of aprepitant
The combination is still used when aprepitant has not been incorporated into the initial regimen for CINV
Single agent phenothiazaine, butyrophenone, or steroids are used for mildly to moderately emetogenic regimens and for “as needed” use for prolonged symptoms (breakthrough symptoms)
Factors to consider
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Patients receiving chemotherapy classified to be high risk should receive a combination antiemetic regimen containing three drugs on the day of chemotherapy administration (Day one)
A serotonin 5-HT3 inhibitor (e.g. Dolasetron, Granisetron, Ondansetron, Palonosetron )
+ dexamethasone +NK1 inhibitor ( e.g. aprepitant)
Chemotherapy Induced Nausea and Vomiting
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Patients receiving regimens that are classified as being of moderate emetic risk should receive a combination antiemetic regimen containing an serotonin 5-HT3 inhibitor plus dexamethasone on day 1. The exception to this is patients receiving an anthracycline and
cyclophosphamide should receive the triple regimen described for high emetic risk regimens
For prophylaxis prior to administration of regimens classified as low emetogenic risk dexamethasone alone is recommended
Chemotherapy Induced Nausea and Vomiting
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High Emetic risk Serotonin 5-HT3 inhibitor + dexamethasone + aprepitant
Moderate Emetic risk Anthracycline + cyclophosphamide:Serotonin 5-HT3 inhibitor + dexamethasone + aprepitant All other regimens of moderate emetic risk:Serotonin 5-HT3 inhibitor + dexamethasone
Low Emetic Risk DexamethasoneMinimal riskNo medication
Chemotherapy Induced Nausea and Vomiting- Prophylaxis of Acute Phase of CINV on Day of Chemotherapy Administration (Day 1)
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High Emetic Risk◦ Serotonin 5-HT3 inhibitor :
Dolasetron 100 mg po or 100 mg IV or 1.8 mg/kg IV Granisetron 2 mg po or 1 mg IV or 0.01 mg/kg IV Ondansetron 24 mg po or 8 mg IV or 0.15 mg/kg IV Palonosetron 0.25 mg IV
◦AND Dexamethasone 12 mg po ◦ AND Aprepitant 125 mg po
Chemotherapy Induced Nausea and Vomiting- Prophylaxis of Acute Phase of CINV on Day of Chemotherapy Administration (Day 1) DOSES
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Moderate emetic risk◦Anthracycline and cyclophosphamide
as before, as high emetic risk
◦All other regimens of moderate emetic risk: Dolasetron 100 mg po or 100 mg IV or 1.8 mg/kg IV Granisetron 2 mg po or 1 mg IV or 0.01 mg/kg IV Ondansetron 24 mg po or 8 mg IV or 0.15 mg/kg IV Palonosetron 0.25 mg IV AND Dexamethasone 8mg IV
Chemotherapy Induced Nausea and Vomiting- Prophylaxis of Acute Phase of CINV on Day of Chemotherapy Administration (Day 1)
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Low Risk◦Dexamethasone 8mg IV
Minimal Risk◦None
Chemotherapy Induced Nausea and Vomiting- Prophylaxis of Acute Phase of CINV on Day of Chemotherapy Administration (Day 1)
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High Emetic Risk Days 2 and 3 after chemotherapy: dexamethasone (8mg IV) + aprepitant
(80mg PO)
Moderate Emetic risk◦ Anthracycline + cyclophosphamide:
Days 2 and 3 after chemotherapy: aprepitant ( 80mg PO)
All other regimens of moderate emetic risk:Days 2–4 after chemotherapy: dexamethasone 8mg PO daily or Serotonin 5-HT3 inhibitor:
Ondansetron 8mg PO daily or twice dailyGranisetron 1mg PO dailyDolasetron 100mg PO daily
Chemotherapy Induced Nausea and Vomiting- Prophylaxis of Delayed Phase of CINV
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Low Emetic Risk- None
Minimal Emetic Risk- None
Chemotherapy Induced Nausea and Vomiting- Prophylaxis of Delayed Phase of CINV
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The best strategy to prevent delayed CINV is to control acute CINV
Aprepitant, dexamethasone and metoclopramide have demonstrated efficacy in preventing delayed CINV
Patients receiving cisplatin and other agents are at highest risk to experience delayed NV
The management of delayed CINV caused by high risk emetogenic regimens is more well defined than moderate emetic risk regimens
Chemotherapy Induced Nausea and Vomiting
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Cannabinoids are used after the failure of other regimens or to stimulate appetite
Consider using an H2 blocker or proton pump inhibitor to prevent dyspepsia ( may mimic nausea)
Not FDA approved indications therefore doses not recommended
Chemotherapy Induced Nausea and Vomiting