Obstructive sleep apnoea, intermittent hypoxia and heart failure with a preserved ejection fraction

To the Editor We have read the review article entitled ‘Obstructive sleep apnoea, intermittent hypoxia and heart failure with a preserved ejection fraction’ by John E Sanderson, Fang Fang, Mi Lu, Chen Yao Ma and Yong Xiang Wei, published in Heart , the official journal of the British Cardiovascular Society. Despite the authors' meritorious efforts in the present review, we believe some considerations may take part in an important complementary discussion. The review article has demonstrated that obstructive sleep apnoea (OSA) …