Amrinone Pharmacology

Amrinone

About Amrinone

Cardiac inotrope, phosphodiesterase (PDE III) inhibitor, cardiotonic in CHF, vasodilator.

Mechanism of Action of Amrinone

Amrinone exerts it`s pharmacological action by selective inhibition of phosphodiesterase-3. This isoenzyme is specific for intracellular degradation of cyclic AMP in heart, blood vessels, and bronchial smooth muscles. Thus the drug increases myocardial cyclic AMP and transmembrane influx of Ca2+. It is a positive inotropic drug and also causes direct vasodilatation. It increases cardiac out put and reduces after load. It increases cardiac index, left ventricular ejection fraction, and decreases peripheral vascular resistance, central venous pressure, left ventricular end diastolic volume and pressure.

Pharmacokinets of Amrinone

Absorption: It is administered intravenously. Distribution: About 10% to 49% is distributed in a protein bound form. Metabolism: Metabolized in liver. Excretion: Excreted through urine

Onset of Action for Amrinone

2 to 5 minutes

Duration of Action for Amrinone

30 to 120minutes

Half Life of Amrinone

4 hours

Side Effects of Amrinone

1.Thrombocytopenia
2.Abdominal pain
3.Nausea
4.Diarrhoea
5.Hepatic impairment
6.Fever
7.Arrhythmias
8.Hypersensitivity reactions

Contra-indications of Amrinone

1.Hypersensitivity to the drug
2.Acute myocardial infarction
3.Severe aortic valvular diseases
4.Severe pulmonary valvular diseases.

Special Precautions while taking Amrinone

1.Hypotension,
2.Aortic or Pulmonary valvular diseases
3.Hypertrophic sub aortic stenosis
4.Hepatic impairment
5.Monitor cardio vascular functioning, heart and BP
6.Maintain fluid and electrolyte balance

Pregnancy Related Information

Use with caution

Old Age Related Information

Use with caution

Breast Feeding Related Information

Use with caution

Children Related Information

Contraindicated

Indications for Amrinone

1.Short term management of heart failure,
2.Cardiac life support in whom other drugs can not be used.

Interactions for Amrinone

Dextrose and Furosemide: A precipitate forms on admixture with Amrinone.
Digitalis: Inotropic effects are additive.

Typical Dosage for Amrinone

Starts with 0.75mg/kg I.V. bolus over two to three minutes. Then give maintenance dosage of 5 to 10mcg/kg/minute as infusion. Additional bolus of 0.75mg/kg may be given 30 minutes after therapy is initiated.
Maximum dose: 10mg/kg/day

Schedule of Amrinone

Storage Requirements for Amrinone

Store at room temperature and protects from exposure to light.

Effects of Missed Dosage of Amrinone

Take the missed dose as soon as noticed and if it is the time for next dose then skip the missed dose. Continue the regular schedule. Do not double the dose.

Effects of Overdose of Amrinone

Treatment is supportive and symptomatic. Treat hypotension with vasopressors like nor epinephrine. Monitor and maintain fluid and electrolyte balance.

Home Delivery for Amrinone in Your City

Medicine India is just a publishing medium for medicine related information and does not provide services or sales of medicines including amrinone.

However, we do publish a comprehensive directory of Pharmacies, Chemists and Druggists in cities all over India. You can use this directory to find the medicine stores in your city (or area) that provide home delivery services for amrinone and other medicines and health products. Home delivery services for amrinone may be free or they may cost you depending on the pharmacy and the minimum order requirements. It would be best to get this clarified while placing the order.

Please be aware that you should take amrinone only if a doctor has recommended or prescribed it. Some or all pharmacies who provide a home delivery service for medicines might insist on a prescription for amrinone before they complete the sale. You can get this information while placing the order for amrinone with the pharmacy.

Amrinone is a generic medicine name and there are several brands available for it. Some of the brands for amrinone might be better known than amrinone itself. If the pharmacy that's willing to deliver medicines to your home doesn't have amrinone in stock, you can ask for one of the branded alternatives for amrinone.