Abstract
Systemic vasodilatation and arterial hypotension are landmarks of septic shock. Whenever fluid resuscitation fails to restore arterial blood pressure and tissue perfusion, vasopressors agents are necessary [1]. Norepinephrine, a strong α-adrenergic agonist, is the standard vasopressor to treat septic shock-induced hypotension [1]. Adrenergic vasopressors have been associated with several detrimental effects, including organ dysfunction and increased mortality [2, 3]. Therefore, alternative agents have been proposed, yet with disappointing results so far [4].
The renin-angiotensin system (RAS) provides an important physiologic mechanism to prevent systemic hypotension under hypovolemic conditions, such as unresuscitated septic shock [5]. In addition to its classical hemodynamic function of regulating arterial blood pressure, angiotensin II plays a key role in several biological processes, including cell growth, apoptosis, inflammatory response, and coagulation. It may also affect mitochondrial function [6, 7].
This review briefly discusses the main physiological functions of the RAS, and presents recent evidence suggesting a role for exogenous angiotensin II administration as a vasopressor in septic shock.
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Corrêa, T.D., Takala, J., Jakob, S.M. (2015). Angiotensin II in Septic Shock. In: Vincent, JL. (eds) Annual Update in Intensive Care and Emergency Medicine 2015. Annual Update in Intensive Care and Emergency Medicine 2015, vol 2015. Springer, Cham. https://doi.org/10.1007/978-3-319-13761-2_10
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DOI: https://doi.org/10.1007/978-3-319-13761-2_10
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