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Vasopressors in septic shock: which, when, and how much?
Rui Shi1,2, Olfa Hamzaoui3, Nello De Vita1,2
1Service de Médecine Intensive-Réanimation, Hôpital Bicêtre, AP-HP, Université Paris-Saclay, Le Kremlin-Bicêtre, France.
Norepinephrine is the primary treatment for septic shock hypotension, aiming to restore vascular tone and improve organ perfusion. Early norepinephrine administration can help achieve blood pressure targets faster and reduce fluid overload risks.
Area of Science:
- Critical Care Medicine
- Pharmacology
- Hemodynamics
Background:
- Septic shock causes hypotension due to vascular tone depression, requiring vasopressor therapy.
- Norepinephrine (NE) is recommended as the first-line vasopressor.
- Vasopressin is considered a second-line agent based on recent evidence.
Purpose of the Study:
- To review the role of vasopressor therapy in septic shock.
- To discuss the current guidelines and evidence regarding norepinephrine and vasopressin use.
- To highlight the importance of individualized treatment targets for mean arterial pressure (MAP).
Main Methods:
- Review of current expert recommendations and recent clinical evidence.
- Analysis of the role of norepinephrine in achieving hemodynamic targets.
- Discussion of diastolic arterial pressure (DAP) as a marker for NE initiation.
Main Results:
- Early NE administration may achieve MAP targets faster and reduce fluid overload.
- Diastolic arterial pressure (DAP) can identify patients needing urgent NE.
- A MAP target of 65 mmHg is suggested, but individualization is key.
Conclusions:
- Norepinephrine is the preferred first-line vasopressor for septic shock.
- Individualized MAP targets are necessary, considering factors like hypertension history and CVP.
- In refractory hypotension, increasing NE dosage or combining it with vasopressin are options.
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