Survival after out-of-hospital cardiac arrest has improved globally over the last four decades.
Atelectasis during general anaesthesia increases with age up to 50 years and BMI up to 30 kg/m2, but appears curiously limited beyond this.
It is still uncertain whether intraoperative PEEP actually reduces postoperative respiratory complications.
There is an association between after-hours surgery and mortality risk that is not entirely explained by the emergent and morbidity characteristics of patients or the surgical procedure.
Perioperative administration of vasopressors in patients having major abdominal surgery may reduce complications and length of stay.
Although feasible, non-surgical antibiotic treatment of uncomplicated acute appendicitis is associated with both a lower treatment success rate and higher complication rate than primary surgical appendicectomy.
Corticosteroids may reduce length of ICU stay in patients with septic shock.
Corticosteroids may reduce 28 day mortality in patients with severe sepsis or septic shock.
Point-of-care ultrasound performed by emergency physicians to diagnose intussusception has a diagnostic accuracy equivalent to radiology-performed ultrasound.
Intravenous resuscitation with balanced crystalloid fluids does not reduce mortality or kidney injury compared with normal saline in critically ill patients.