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Purpose To assess whether ultrasound guidance improves central venous catheter placement outcomes compared to the landmark technique in critically ill children. Methods A prospective multicentre observational study was carried out in 26 paediatric intensive care units over 6 months. Children 0–18 years old who received a temporary central venous catheter, inserted using either ultrasound or landmark...
Landmark use has been demonstrated in a variety of organisms, yet the manner in which landmarks are encoded and subsequently used appears to vary between and sometimes within species, even when faced with identical landmark arrays. In the present experiments, orangutans and human children were shown a square array of identical landmarks and were trained to locate a hidden goal in the centre of the...
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