Preventing Cardiovascular Collapse With Vasopressors During Tracheal Intubation

Inclusion Criteria: * Patient is admitted or scheduled for admission to a participating study hospital * Planned procedure is tracheal intubation and planned operator is a provider expected to routinely perform endotracheal intubation in the participating unit * Critical illness (i.e. life-threatening condition with intubation required for cardiorespiratory failure or neurological impairment) * Administration of sedation (with or without neuromuscular blockade) is planned * Age 18 years or older Exclusion Criteria: * No vasopressors/inotropes at the moment of screening for eligibility * MAP \< 60 mmHg or \> 120 mmHg at the moment of screening for eligibility * Urgency of intubation precludes safe performance of study procedures * Intubation performed during cardiopulmonary resuscitation of a patient in cardiac arrest * Enrolled in another clinical trial that is unapproved for co-enrollment * Pregnant or suspected pregnancy