Medications Flashcards
Adrenaline Presentation
1mg in 1ml
Adrenaline Introduction
A naturally occurring sympathomimetic agent
Causes:
- Peripheral Vasoconstriction
- Stimulation of cardiac conduction system —> increased contractions
- Bronchodilaton
- Dilation of muscle blood vessels
Adrenaline Onset
IV/IO: Onset 30 seconds, half-life 5 minutes, duration 5-10 minutes
IM: Onset 60 seconds, half-life 5 minutes, duration 5-10 minutes
Adrenaline Indications
- Anaphylaxis
- Life-threatening asthma
- Cardiac Arrest
- Post-ROSC
- Severe croup
Adrenaline Contraindications
Nil
Adrenaline Precautions/Notes
- Ischaemic Heart Disease
- Hypertension
- Hypovolaemia
- Do not walk patient pre or post IM adrenaline administration in anaphylaxis - usually min of 1 hour after 1x dose and 4 hours if >1 dose
- If given IV into a peripheral vein, follow each dose with a sodium chloride flush
Amiodarone Presentation
150mg in 3mL
Amiodarone Introduction
Primarily Class III antidysrhythmic agent
Prolongs action potential duration and hence refractory period of atrial, nodal and ventricular tissue
Has characteristics of all Vaughn-Williams classifications
Amiodarone Onset
Immediate onset
Peak <10 minutes
Duration 30-60 minutes
Amiodarone Indications
Cardiac Arrest with persistent/shock resistant VF/pulseless VT, post 3rd shock
Amiodarone Contraindications
No contraindications in cardiac arrest
Not compatible with Saline (if infusion dose is advocated by a specifically authorised person)
Amiodarone Precautions
- Heart Failure
- Thyroid dysfunction
- Amiodarone is only indicated for shock resistant or recurrent VF / pulseless VT
- MUST NOT be diluted into NaCl (e.g. if infusion doses are advised via ASMA / CSP)
Amiodarone Special Considerations
Bradycardia
Hypotension
Polymorphic tachycardias
Nausea
Tremor
Phlebitis
Dizziness
Paraesthesia
Headaches
Adrenaline Special Considerations
Tachyarrhythmias, palpitations
Hypertension
Pupil dilation
Tremor
Anxiety
Aspirin Presentation
300mg tablet
Aspirin Introduction
- Analgesic
- Antipyretic
- Anti-inflammatory
- Anti-platelet aggregation agent
Reduces mortality significantly in AMI by minimising platelet aggregation and thrombus formation to retard the progression of coronary artery thrombosis.
Aspirin Indications
Chest pain / discomfort of presumed cardiac origin
Aspirin Contraindications
Known hypersensitivity to aspirin / salicylates
Children < 16 years of age
Aspirin Precautions
Actively bleeding peptic ulcers
Suspected AAA
Aspirin / salicylate-sensitive asthmatics
Aspirin Special Considerations
- Heart burn, nausea, GI bleeding
- Increased bleeding time
- Anaphylactic reaction
(some patients, especially asthmatics) exhibit notable sensitivity to aspirin, which may provoke various hypersensitivity / allergic reactions)
Atropine Presentation
1.2mg in 1ml
Atropine Introduction
- Anticholinergic agent:
Inhibits acetylcholine at post-ganglionic nerves at neuroeffector site —> blocks vagal stimulation —> sympathetic response —> increase pulse rate by increasing SA node firing rate and increasing conduction velocity through the AV node - Antidote to reverse the effects of cholinesterase inhibitors eg organophosphate poisoning
Atropine Indications
- Symptomatic Bradycardia, haemodynamically unstable due to the bradycardia and associated with poor signs of perfusion, including:
- Hypotension
- Altered conscious state
- Diaphoresis
- Shortness of breath, and/or cyanosis
- Syncope - Organophosphate poisoning with cholinergic effects
Atropine Contraindications
Known hypersensitivity
Patients with cardiac transplant