1/27/2024 0 Comments High flow oxygen![]() To say that these resources have been condensed into the summary below would be unfair to the definition of condensation. The more recent review by Papazian et al (2016) offers a decent overview of the evidence to support all the indications for HFNP. There is also a great article by J-D Ricard (2012) which dissects this oxygen delivery system. LITFL notes on this topic cover the subject in enough detail to answer it. Then, in the first paper of 2017 Question 3 asked the candidates to critically evaluate high flow nasal prongs. ![]() To cover all bases, this chapter was written to answer Question 2 as if it were a "critically evaluate" style SAQ. Question 2 from the first paper of 2013 asked for indications, contraindications and complications of high flow nasal prong therapy. All CICM trainees will be familiar with the device - it is a single-limb circuit which connects a gas blender to a heater/humidifier, and then funnels a mixture of oxygen and air into the patient, essentially using their respiratory system as a PEEP valve. Though the first paper to describe these devices ( Dewan & Bell, 1994) gave us this terminology, subsequent authors have occasionally referred to these devices as "high flow nasal cannulae" or "high flow nasal oxygen", because presumably the word "prongs" is somehow uncivilized or intrinsically comical. For the patient whose inspiratory flow rate exceeds even the generous threshold of Venturi masks, high flow nasal oxygen is an excellent option.
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