{'fraction_non_alphanumeric': 0.02707581227436823, 'fraction_numerical': 0.0, 'mean_word_length': 6.816901408450704, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Haemodynamic effects of proportional assist ventilation during high‐intensity exercise in patients with chronic obstructive pulmonary disease

Background and objective:  Proportional assist ventilation (PAV) has been proposed as a more physiological modality of non‐invasive ventilation, thereby reducing the potential for deleterious cardio‐circulatory effects during exercise, in patients with COPD. We therefore evaluated whether PAV modulates the kinetic and ‘steady‐state’ haemodynamic responses to exercise in patients with moderate‐to‐severe COPD.