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Adenosine intravenous injection

Updated 2 Feb 2023 | Supraventricular arrhythmias

Presentation

Injections of adenosine.

Drugs List

  • ADENOCOR 6mg/2ml solution for injection vial
  • adenosine 12mg/4ml solution for injection pre-filled syringe
  • adenosine 6mg/2ml solution for injection pre-filled syringe
  • adenosine 6mg/2ml solution for injection vial
  • Therapeutic Indications

    Uses

    Diagnosis of broad/narrow complex supra-ventricular tachycardia
    Paroxysmal supra-ventricular tachyarrhythmias

    Rapid conversion to a normal sinus rhythm of paroxysmal supraventricular tachycardias, including those associated with accessory bypass tracts (Wolff-Parkinson-White syndrome).

    Aid to diagnosis of broad or narrow complex supraventricular tachycardias where the slowing of AV conduction helps diagnosis of atrial activity.

    Sensitisation of intra-cavitary electrophysiological investigations.

    Dosage

    Patients who develop high-level AV block at a particular dose should not be given further dosage increments.

    Adults

    Initial dose: 3mg over 2 seconds, given as a rapid intravenous bolus injection.
    Second dose: 6mg given as a rapid intravenous bolus injection after 1 to 2 minutes if required.
    Third dose: 12mg given as a rapid intravenous bolus injection after 1 to 2 minutes if required.

    The following alternative dosing schedule may be suitable:
    Initial dose: 6mg over 2 seconds as a rapid intravenous injection.
    Second dose: 12mg as a rapid intravenous injection after 1 to 2 minutes if required.
    Third dose: 12mg as a rapid intravenous injection after a further 1 to 2 minutes if required.

    Children

    Paroxysmal supraventricular tachycardia
    First bolus dose: 100micrograms/kg (maximum dose of 6mg).
    Increments: 100micrograms/kg when required (maximum dose of 12mg).

    The following alternative unlicensed dosing schedule may be suitable:

    Termination of Supraventricular tachycardias and diagnosis of Supraventricular arrhythmias
    Children aged 12 to 18 years:
    Initial dose: 3mg given as a rapid intravenous injection.
    Second dose: 6mg given as a rapid intravenous injection after 1 to 2 minutes if required.
    Third dose: 12mg as a rapid intravenous injection after 1 to 2 minutes if required.

    A 3mg dose maybe ineffective for some patients of this age group, therefore a higher initial dose may be used, except in heart transplant patients who are particularly sensitive.

    Children aged 1 to 12 years
    Initial dose: 100micrograms/kg by rapid intravenous injection.
    Increments: 50micrograms/kg to 100micrograms/kg every 1 to 2 minutes if required, until tachycardia is resolved (maximum dose of 12mg).

    Children aged 1 month to 1 year
    Initial dose: 150micrograms/kg by rapid intravenous injection.
    Increments: 50micrograms/kg to 100micrograms/kg every 1 to 2 minutes if required, until tachycardia is resolved (maximum single dose of 500micrograms/kg).

    Neonates

    Paroxysmal supraventricular tachycardia
    First bolus dose: 100micrograms/kg (maximum dose of 6mg).
    Increments: 100micrograms/kg when required (maximum dose of 12mg).

    The following alternative unlicensed dosing schedule may be suitable:

    Termination of Supraventricular tachycardias and diagnosis of Supraventricular arrhythmias
    Initial dose: 150micrograms/kg by rapid intravenous injection.
    Increments: 50micrograms/kg to 100micrograms/kg every 1 to 2 minutes if required, until tachycardia is resolved (maximum single dose of 300micrograms/kg).

    Administration

    For rapid intravenous bolus injection, directly into a vein or intravenous line.

    If given by an intravenous line then give as proximally as possible and followed by a rapid saline flush. If administered into a peripheral vein, it is recommended a large bore cannula is used.

    Contraindications

    Asthma
    Breastfeeding
    Chronic obstructive pulmonary disease
    Decompensated cardiac failure
    Long QT syndrome
    Non paced second/third degree AV block
    Non-paced sinus node dysfunction
    Severe hypotension

    Precautions and Warnings

    Children under 18 years
    Left-to-right cardiovascular shunt
    Predisposition to seizures
    Restricted sodium intake
    Atrial fibrillation
    Autonomic neuropathy
    Bundle branch block
    Cardiac failure
    Cerebral arteriosclerosis
    Cerebrovascular insufficiency
    First degree atrioventricular block
    Flutter with accessory pathway
    Heart transplant within 1 year
    History of seizures
    Hypovolaemia
    Left main coronary artery stenosis
    Obstructive valvular heart disease
    Pericardial effusion
    Pericarditis
    Pregnancy
    Recent myocardial infarction

    Sodium content of formulation may be significant
    Correct hypovolaemia prior to administration
    Not all available brands are licensed for all age groups
    Previous/Concurrent medicine consider washout period: See prescribing info
    Treatment to be initiated by specialist
    Resuscitation facilities must be immediately available
    Monitor cardiac function by ECG
    Monitor patients with first degree AV block
    May cause bronchospasm
    May cause convulsions
    Discontinue if bronchospasm or decreased respiratory function occur
    Discontinue if severe bradycardia occurs
    Discontinue if sustained second or third degree AV block occurs
    Discontinue immediately if severe hypotension occurs
    Discontinue treatment if angina appears or worsens
    Not licensed for all indications in all age groups
    Avoid food/drink containing xanthines for 12 hours prior to administration

    Life threatening arrhythmias may occur; monitor ECG continuously.

    Severe bradycardia has been reported. Some occurred in early post-transplant patients; in the other cases occult sino-atrial disease was present. Any occurrence of severe bradycardia should be taken as a warning of underlying disease. Severe bradycardia would favour the occurrence of torsades de pointes, especially in patients with prolonged QT interval.

    There have been reports of cerebrovascular accident and transient ischaemic attacks secondary to the haemodynamic effects of adenosine. Myocardial infarction shortly after use has also been reported.

    Pregnancy and Lactation

    Pregnancy

    Use adenosine with caution in pregnancy.

    Some manufacturers recommend only using adenosine if the physician considers the benefits to outweigh the potential risks.

    At the time of writing there is limited published information regarding the use of adenosine during pregnancy. Potential risks are unknown. Animal studies are insufficient with respect to reproductive toxicity.

    Briggs (2015) suggests, if indicated the drug should not be withheld during pregnancy. Adenosine has been used during pregnancy without harming the embryo or foetus.

    Lactation

    Adenosine is contraindicated during breastfeeding.

    It is unknown whether adenosine metabolites are excreted in human milk. Manufacturers states that adenosine should not be used during breastfeeding.

    Side Effects

    Anaphylactic reaction
    Angioedema
    Apnoea
    Apprehension
    Arrhythmias
    Asthenia
    Asystole
    Atrial extrasystoles
    Atrial fibrillation
    Atrioventricular block
    Blurred vision
    Bradycardia
    Bronchospasm
    Burning sensation
    Cardiac arrest
    Chest pain
    Convulsions
    Dizziness
    Drowsiness
    Dry mouth
    Dyspnoea
    Flushing
    General discomfort
    Headache
    Hyperventilation
    Hypotension
    Impaired consciousness
    Injection site reactions
    Intracranial hypertension
    Light-headedness
    Metallic taste
    Nasal congestion
    Nausea
    Nervousness
    Pain
    Palpitations
    Paraesthesia
    Rash
    Respiratory arrest
    Respiratory failure
    Sensation of pressure
    Sinus pause
    Sinus tachycardia
    Skipped beat
    Sweating
    Syncope
    Tinnitus
    Torsades de pointes
    Transient rhythm disturbances
    Tremor
    Urinary urgency
    Urticaria
    Ventricular excitability disorders
    Ventricular extrasystoles
    Ventricular fibrillation
    Ventricular tachycardia
    Vomiting
    Weakness

    Overdosage

    It is strongly recommended that the UK National Poisons Information Service be consulted on cases of suspected or actual overdose where there is doubt over the degree of risk or about appropriate management.

    The following number will direct the caller to the relevant local centre (0844) 892 0111

    Information may be obtained if you have access to ToxBase the primary clinical toxicology database of the National Poisons Information Service. This is available via password on the internet ( www.toxbase.org ) or if this is unavailable at the backup site ( www.toxbasebackup.org ).

    Further Information

    Last Full Review Date: March 2019

    Reference Sources

    Drugs in Pregnancy and Lactation: A Reference Guide to Fetal and Neonatal Risk, 10th edition (2015) ed. Briggs, G., Freeman, R. Wolters Kluwer Health, Philadelphia.

    Summary of Product Characteristics: Adenocor 3mg/ml solution for injection. Sanofi. Revised April 2021.

    Summary of Product Characteristics: Adenosine 3mg/ml solution for injection. Focus Pharmaceuticals Ltd. Revised February 2014.

    Summary of Product Characteristics: Adenosine 3mg/ml solution for injection. Wockhardt UK Ltd. Revised March 2015.

    Summary of Product Characteristics: Adenosine 3mg/ml solution for injection pre-filled syringe. Fresenius Kabi Limited. Revised May 2018.

    NICE - Evidence Services
    Available at: www.nice.org.uk
    Last accessed: 08 March 2019

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