I'm a UK respiratory consultant: This is how we manage COVID-19 patients with failing lungs

As the second wave of the coronavirus pandemic hits hospitals, the hiss and bubble of advanced respiratory support is an increasingly familiar sound on medical wards.

This is because some patients who become severely unwell with COVID-19 suffer from respiratory failure and so require breathing support.

This support can be both invasive, where a ventilator delivers air to the patient via a tube inserted into the windpipe, or non-invasive, where patients are assisted