Patients’ pathways to Accident and Emergency (A&E) Patients’ pathways to Accident and Emergency (A&E). COPD, chronic obstructive pulmonary disease; GP, general practitioner; HF, heart failure; NHS, National Health Service; OOH, out-of-hours service. Patients’ pathways to Accident and Emergency (A&E). COPD, chronic obstructive pulmonary disease; GP, general practitioner; HF, heart failure; NHS, National Health Service; OOH, out-of-hours service. Jeong Su Lee et al. BMJ Open Resp Res 2018;5:e000244 ©2018 by British Thoracic Society