Complication Management Flashcards
Define Nausea
Unpleasant feeling of needing to vomit, accompanied by autonomic symptoms
Define Vomiting
Forceful expulsion of gastric contents through the mouth
What are the four inputs to the Vomiting Centre?
Vestibular Input
High Centres
CTZ
Vagal Afferents
Where in Vomiting Centre inputs are Dopamine Receptors located?
CTZ
Vagal Afferents
Name three Dopamine antagonists
Domperidone
Metacloperamide
Haloperidol
Where in Vomiting Centre inputs are 5HT3 Receptors located?
CTZ
Vagal Afferents
What would be the Antiemetic of choice in impaired gastric emptying?
Metacloperamide
What would be the Antiemetic of choice in impaired Post Op/Radiotherapy?
Ondansetron
What would be the Antiemetic of choice in Bowel Obstruction?
Cyclizine
What would be the Antiemetic of choice in Drug SE?
Haloperidol
What would be the Antiemetic of choice with a Metabolic cause?
Haloperidol
What would be the Antiemetic of choice in Chemotherapy?
Metacloperamide
What are the side effects of D2 Antagonists?
Extrapyramidal (eg involuntary movements and Akathisia)
Should not combine D2 receptors
May enhance EP side effects of SSRIs and TCAs
Do not use in PArkinsons
Describe two central and two peripheral side effects of Anticholinergics
Central: Agitation and Restlessness
Peripheral: Dry Mouth and Constipation
Who should not recieve Anticholinergics?
Known heart disease/Arrhythmias
Why should you not combine Anticholinergics and Domperidone/Metacloperamide?
Domperidone and Metacloperamide have some cholinergic action
What level of Levomepromazine becomes sedating?
Above 12.5mg
What is a common side effect of 5HT3 Antagonists?
Constipation
Name three non pharmacological interventions for Nausea and Vomiting
Small Meals
Ginger
Accupuncture/Accupressure
What would be the Antiemetic of choice in Intracranial aetiology?
Cyclizine +/- Dexamethasone
What would be the Antiemetic of choice in vestibular aetiology?
Cyclizine
What would be the Antiemetic of choice in unclear aetiology?
Cyclizine
How does Biochemical vomiting present?
Constant Nausea
Small frequent vomits
Doesn’t improve with being sick
How does Nausea due to Brain Metastases present?
Projectile vomiting
Confusion
Headache