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Crit Care. 2019 Mar 29;23(1):104. doi: 10.1186/s13054-019-2378-9.

Optimization of the treatment with beta-lactam antibiotics in critically ill patients-guidelines from the French Society of Pharmacology and Therapeutics (Société Française de Pharmacologie et Thérapeutique-SFPT) and the French Society of Anaesthesia and Intensive Care Medicine (Société Française d'Anesthésie et Réanimation-SFAR).

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AP-HM Hôpital de la Timone, Service de Pharmacologie Clinique et Pharmacovigilance, 264 rue Saint Pierre, 13005, Marseille, France.
AP-HP Hôpital Cochin, Service de Pharmacologie, 27 rue du Faubourg St-Jacques, 75679, Paris Cedex 14, France.
CHU d'Amiens Picardie, Service de Pharmacologie Clinique, UPJV EA7517, Avenue Laennec, 80054, Amiens Cedex 1, France.
CHU de Poitiers, Département d'Anesthésie Réanimation, 2 Rue de la Milétrie, 86021, Poitiers, France.
CHU de Nantes, Département de Pharmacologie Clinique, 5 allée de l'île gloriette, 44093, Nantes Cedex 01, France.
CHU de Toulouse, Laboratoire de Pharmacocinétique et Toxicologie Clinique, Institut Fédératif de Biologie, 330, avenue de Grande-Bretagne, 31059, Toulouse cedex 9, France.
CHU de Lyon, Service de Pharmacie, Groupement Hospitalier Nord, Hôpital Pierre Garraud, 136 rue du Commandant Charcot, 69322, Lyon cedex 05, France.
CHR d'Orléans, Laboratoire de Biochimie, 14 Avenue de l'Hôpital, 45067, Orléans, France.
AP-HP Hôpital Henri Mondor, Département d'Anesthésie-Réanimation, 51 Avenue du Maréchal de Lattre de Tassigny, 94000, Créteil, France.
CHU de Nîmes, Département d'anesthésie, réanimation, douleur et médicine d'urgence, Place du Pr Robert Debré, 30029, Nîmes cedex 9, France.
CHRU de Nancy, Département de pharmacologie clinique et de toxicologie, 29 rue Lionnois, 54000, Nancy, France.
CHU Pontchaillou, Service de Pharmacologie Clinique et épidémiologique, 2 Rue Henri le Guilloux, 35000, Rennes, France.
AP-HP Hôpital Tenon, Département d'Anesthésie et Réanimation, 4 rue de la Chine, 75020, Paris, France.



Beta-lactam antibiotics (βLA) are the most commonly used antibiotics in the intensive care unit (ICU). ICU patients present many pathophysiological features that cause pharmacokinetic (PK) and pharmacodynamic (PD) specificities, leading to the risk of underdosage. The French Society of Pharmacology and Therapeutics (SFPT) and the French Society of Anaesthesia and Intensive Care Medicine (SFAR) have joined forces to provide guidelines on the optimization of beta-lactam treatment in ICU patients.


A consensus committee of 18 experts from the two societies had the mission of producing these guidelines. The entire process was conducted independently of any industry funding. A list of questions formulated according to the PICO model (Population, Intervention, Comparison, and Outcomes) was drawn-up by the experts. Then, two bibliographic experts analysed the literature published since January 2000 using predefined keywords according to PRISMA recommendations. The quality of the data identified from the literature was assessed using the GRADE® methodology. Due to the lack of powerful studies having used mortality as main judgement criteria, it was decided, before drafting the recommendations, to formulate only "optional" recommendations.


After two rounds of rating and one amendment, a strong agreement was reached by the SFPT-SFAR guideline panel for 21 optional recommendations and a recapitulative algorithm for care covering four areas: (i) pharmacokinetic variability, (ii) PK-PD relationship, (iii) administration modalities, and (iv) therapeutic drug monitoring (TDM). The most important recommendations regarding βLA administration in ICU patients concerned (i) the consideration of the many sources of PK variability in this population; (ii) the definition of free plasma concentration between four and eight times the Minimal Inhibitory Concentration (MIC) of the causative bacteria for 100% of the dosing interval as PK-PD target to maximize bacteriological and clinical responses; (iii) the use of continuous or prolonged administration of βLA in the most severe patients, in case of high MIC bacteria and in case of lower respiratory tract infection to improve clinical cure; and (iv) the use of TDM to improve PK-PD target achievement.


The experts strongly suggest the use of personalized dosing, continuous or prolonged infusion and therapeutic drug monitoring when administering βLA in critically ill patients.


Beta-lactam antibiotics; Continuous infusion; Dosage; Pharmacodynamics; Pharmacokinetics; Therapeutic drug monitoring

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