Sleep disordered breathing in interstitial lung disease: A review

Table 1 Sleep characteristics in interstitial lung disease

Sleep characteristic	Abnormality	Patient group	Ref.
Respiratory rate	Decreased	ILD	[15]
	Unchanged	ILD, IPF	[11-14]
Stage 1/2 sleep	Increased	ILD	[14]
		IPF	[19,20]
REM sleep	Reduced	ILD	[11,14,15,25]
		Scleroderma	[26]
		IPF	[2,19,20]
Slow wave sleep	Reduced	IPF	[13]
		ILD	[17,25]
Arousal index	Increased	ILD	[12,14,15]
		IPF	[2,19,20]
Sleep efficiency	Reduced	ILD	[25]
		IPF	[13,19,20]

ILD: Interstitial lung disease; IPF: Idiopathic pulmonary fibrosis; REM: Rapid eye movement.