“…5,14,17 This modality may provide important information less evident on clinical examination, especially in challenging cases (obesity, unfavourable anatomy/obscured landmarks, cervical spine precautions). 13,14 These factors most likely prompted the recent recommendation of ultrasound in both the Australian/New Zealand and Danish intensive care practice guidelines as a means of improving the safety of the technique. 18,19 Observational data suggests a 10 times higher incidence of complications in conventional groups when compared with ultrasound guidance.…”