Pablo Blanco and Giovanni Volpicelli have written a very useful guide to errors in point of care ultrasound, showing how they may occur and proving practical tips to avoid getting caught out.
They cover the following areas:
If you are performing PoCUS this paper provides a useful guide to reflect on your current practice.
Blanco P, Volpicelli G. Common pitfalls in point-of-care ultrasound: a practical guide for emergency and critical care physicians. Crit Ultrasound J. 2016 Dec;8(1):15