In addition to this, people who are in the last weeks of life may find oxygen therapy of symptomatic benefit and comfort and should be referred to the care of the dying adult guideline (https://www.nice.org.uk/guidance/ng31). The committee also discussed the recently published British Thoracic Society Guideline for oxygen use in adults in healthcare and emergency settings (https://www.brit-thoracic.org.uk/document-library/clinical- use-in-adults-in-healthcare-and-emergency-settings/) which states that people should only be prescribed oxygen in palliative care when arterial oxygen saturation is Chronic Heart Failure Advanced heart failure and palliative care NICE 2018. All rights reserved. Subject to Notice of rights. ISBN: 978-1-4731-3093-7 less than 90% or where people report significant relief of breathlessness from oxygen. The committee acknowledged that this guideline was not specifically formulated for people with advanced heart failure but agreed with the approach nonetheless. The committee also acknowledged the British Thoracic Society Guidelines for Home Oxygen use in adults which state that people with advanced heart failure should be offered long term oxygen therapy if they have a resting Pa02 7.3 kPa or 8 kPa in the presence of peripheral oedema, polycythaemia (haematocrit 55%) or evidence of pulmonary hypertension on ECG or echocardiography. Where symptomatic hypoxaemia was identified with unknown cause, this would need to be investigated by the appropriate specialist in order that a root cause can be identified and treatment tailored appropriately. With regard to the evidence included within review, the committee acknowledged that the discontinuation of the trial due to poor adherence was suggestive that the trial population were not receiving any significant benefit from oxygen therapy to justify them adhering to the intervention. 10.3 Discussing Implantable Cardioverter Defibrillatior (ICD) deactivation An increasing number of people are undergoing an implantable Cardioverter Defibrillator (ICD) implantation, with or without Cardiac Resynchronisation Therapy (RCT). 