Giapreza (angiotensin II acetate, human)

Renin-Angiotensin-Aldosterone System (RAAS) Hormones Intravenous Vial (ML)

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Last reviewed · Source: First Databank (FDB) drug data

Overview

Angiotensin II acetate is a synthetic form of endogenous angiotensin II, a peptide hormone of the renin-angiotensin-aldosterone system (RAAS) that causes vasoconstriction and increased blood pressure.

Angiotensin II acetate is a synthetic preparation of endogenous human angiotensin II, a peptide hormone of the renin-angiotensin-aldosterone system (RAAS) that plays an essential role in blood pressure regulation. The drug is a potent vasoconstrictor that is used to increase blood pressure in patients with septic or other forms of distributive shock.

In patients with septic shock, a variety of physiologic responses are activated to restore effective circulating volume, vascular resistance, and arterial pressure, including activation of RAAS and production of angiotensin II. There is some evidence suggesting that patients with septic shock may have a relative deficiency of angiotensin II that may be reversed with exogenous administration of angiotensin II. Angiotensin II increases blood pressure through direct vasoconstriction of the peripheral vasculature in addition to other mechanisms (e.g., aldosterone secretion, vasopressin release, activation of the sympathetic nervous system).

The physiologic effects of angiotensin II are mediated by specific G protein-coupled receptors located in the kidneys, vascular smooth muscle, lung, heart, brain, adrenal gland, pituitary gland, and liver. The angiotensin II receptor type 1 (AT1 receptor) is responsible for the vasoconstrictive effects of angiotensin II; activation of the receptor stimulates calcium/calmodulin-dependent phosphorylation of myosin and causes smooth muscle contraction. Angiotensin II also has been shown to have cardiac remodeling properties and preferential vasoconstrictive effects on renal efferent arterioles.

Following IV infusion, angiotensin II is rapidly metabolized by aminopeptidase A to angiotensin 2-8 (angiotensin III) and by angiotensin-converting enzyme 2 to angiotensin 1-7 in plasma, erythrocytes, and many other major organs (e.g., intestine, kidney, liver, lungs). Angiotensin III retains approximately 40% of the activity of angiotensin II, while angiotensin 1-7 exhibits opposing actions to angiotensin II and causes vasodilation, natriuresis, and reduced blood pressure. The plasma half-life of angiotensin II is less than 1 minute.

Elimination of the drug is not dependent on renal or hepatic routes.

Generic name: angiotensin II acetate, human
Drug class: Renin-Angiotensin-Aldosterone System (RAAS) Hormones
Therapeutic class: Endocrine

Reference product & biosimilars

No reference, biosimilar or interchangeable associated with this drug.

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Indications

The following indications are listed for Giapreza:

  • Hypotension Due To Distributive Shock

Dosing

Dosage of angiotensin II acetate is expressed in terms of angiotensin II.

Drug interactions

No drug interaction studies have been performed to date with angiotensin II acetate. Concomitant use of angiotensin-converting enzyme (ACE) inhibitors may increase the response to angiotensin II and concomitant use of angiotensin II receptor antagonists (ARBs) may decrease the response to angiotensin II.

Contraindications

The manufacturer states that there are no known contraindications to the use of angiotensin II acetate.

Adverse reactions

Adverse reactions reported in 4% or more of patients receiving angiotensin II in clinical studies include thromboembolic events (e.g., DVT), thrombocytopenia, tachycardia, fungal infection, delirium, acidosis, hyperglycemia, and peripheral ischemia.

Precautions

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ICD codes

CodeTypeDescription
Hypotension due to distributive shock
A48.3ICD10CMToxic shock syndrome
E27.2ICD10CMAddisonian crisis
I95ICD10CMHypotension
R65.21ICD10CMSevere sepsis with septic shock
T78.2ICD10CMAnaphylactic shock, unspecified
T78.2xxAICD10CMAnaphylactic shock, unspecified, initial encounter
T81.12ICD10CMPostprocedural septic shock
T81.12xAICD10CMPostprocedural septic shock, initial encounter

ICD code information from First Databank (FDB).

Formulary status

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Last reviewed · Source: First Databank (FDB) drug data