[Antibiotic Stewardship 2.0. Individualization of therapy].

Antibiotic resistance is a part of bacterial evolution and therefore unavoidable. In the context of missing novel treatment options, the restrictive use of available antibiotics in order to decelerate the spread of resistance is of high importance. This is the aim of Antibiotic Stewardship (ABS). ABS consists of two sides: a structural one and an individual one. The former deals with the formation of ABS teams, the analysis of antibiotic usage and resistance development, and the implementation of certain measures to improve antibiotic use; the latter is reflected by concrete bedside decisions: How can (broad) spectrum antibiotics be spared without harming the patient? This can be achieved, for example, by de-escalation, limiting duration of treatment, and avoiding nonindicated use. Typical nonindicated uses in both in- and outpatients are viral respiratory tract infections, asymptomatic bacteriuria and nonbacterial exacerbations of chronic obstructive pulmonary disease. Furthermore, respiratory colonization in ventilated patients, ventilator-associated tracheobronchitis, "prolonged" perioperative prophylaxis, and contaminated blood cultures reflect situations where antibiotics should be avoided. In the future, ABS will benefit from accelerated pathogen and resistance detection because early adequate treatment not only lowers the usage of antibiotics but can also improve patient outcome.