The goal of this clinical trial is to learn if it is feaseble to conduct a superiority trial comparing two methods for endotracheal intubation in critically ill patients. It will also learn about validity of outcomes regarding endotracheal intubation. The main questions it aims to answer are:
* Does performing intubation via Delayed Sequence Induction lower the incidence of severe hemodynamic complications compared to Rapid Sequence Induction? * How are hemodynamic complications in the severely ill to be measured in order to minimize bias?
Participants will:
* receive emergency endotracheal intubation via Delayed or Rapid Sequence induction * receive a phone call 90 days after endotracheal intubation * outcome parameters outside of follow up phone calls will be routinely collected during the regular ICU-stay, there won't be any additional testing
Adult patients 18 years or older in need of emergency endotracheal intubation in the following 60 minutes.
The planned operateur routinely performs endotracheal intubation in critically ill patients.
Endotracheal Intubation performed during cardiopulmonary resuscitation or during "unstable ROSC", defined as Norepinephrine or Epinephrine dose > 0,5 µg/kgKG/min after return of spontaneous circulation.
Participation in the study is not warranted because of increased risk for the patient or otherwise not justifiable (e.g. active oral bleeding).
Known allergy against Ketamine, Esketamine, Midazolam or Rocuronium.
Known contraindication against Ketamine, Esketamine Midazolam or Rocuronium.