EMETICS AND ANTIEMETICS
 
EMETICS Apomorphine- dopaminergic agonist on CTZ Ipecacuanha- emetine syrup ipecac 15-20ml- adults 10-15ml- children 5ml- ...
Vomiting Centre CTZ Hormones Diabetes Dopamine Acetylcholine Histamine Vestibular Sights Smell Taste Vomiting Gut Opioids ...
Anticholinergics MOA - block conduction of nerve impulses Drugs -  Hyoscine (0.2-0.5mg oral,i.m) Dicyclomine (10-20mg oral...
Anti-histamines-H 1  antagonist Drugs Promethazine Diphenhydramine Cyclizine Meclozine Cinnarizine Uses Motion sickness Po...
Neuroleptics MOA -  block D2 receptors in CTZ Drugs Chlorpromazine Prochlorperazine Haloperidol Uses Drug induced and post...
Prokinetics Drugs   Metoclopramide- D2 antagonist,5-HT 4  agonist & 5HT 3   antagonist  Domperidone- D2 antagonist Cisapri...
5-HT 3  Antagonists Drugs Ondensetron- mild 5-HT 4  blocker Granisetron- 10-15 times potent Uses Cancer chemotherapy/radio...
Adjuvant antiemetics Dexamethasone Benzodiazepines Cannabinoids
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Emetics and antiemetics

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Emetics and antiemetics

  1. 1. EMETICS AND ANTIEMETICS
  2. 3. EMETICS Apomorphine- dopaminergic agonist on CTZ Ipecacuanha- emetine syrup ipecac 15-20ml- adults 10-15ml- children 5ml- infants
  3. 4. Vomiting Centre CTZ Hormones Diabetes Dopamine Acetylcholine Histamine Vestibular Sights Smell Taste Vomiting Gut Opioids Chemotherapy Anaesthetics BBB Hypotension Hypoxaemia
  4. 5. Anticholinergics MOA - block conduction of nerve impulses Drugs - Hyoscine (0.2-0.5mg oral,i.m) Dicyclomine (10-20mg oral) Uses Motion sickness Short brisk journies Transdermal patch- 1.5mg,delivered over 3 days .(Hyoscine)
  5. 6. Anti-histamines-H 1 antagonist Drugs Promethazine Diphenhydramine Cyclizine Meclozine Cinnarizine Uses Motion sickness Postoperative Vomiting Side effects- sedation & dry mouth
  6. 7. Neuroleptics MOA - block D2 receptors in CTZ Drugs Chlorpromazine Prochlorperazine Haloperidol Uses Drug induced and postanaesthetic nausea & vomiting Disease induced vomiting Cancer chemotherapy induced vomiting Side effects- sedation & muscle dystonia
  7. 8. Prokinetics Drugs Metoclopramide- D2 antagonist,5-HT 4 agonist & 5HT 3 antagonist Domperidone- D2 antagonist Cisapride- 5-HT 4 agonist, 5-HT 3 antagonist Mosapride Uses Drug, disease & postoperative induced vomiting Dyspepsia GERD Side effects- sedation, dry mouth, headache, loose stools etc.
  8. 9. 5-HT 3 Antagonists Drugs Ondensetron- mild 5-HT 4 blocker Granisetron- 10-15 times potent Uses Cancer chemotherapy/radiotherapy induced vomiting Side effects- headache, mild constipation or diarrhoea .
  9. 10. Adjuvant antiemetics Dexamethasone Benzodiazepines Cannabinoids

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