1. A 43-Year-Old Man With Daytime Sleepiness and a Heart Murmur
Christian M. Horvath, MD, Stephan Zbinden, MD, Sebastian R. Ott, MD, Anne-Kathrin Brill, MD 
CHEST 
Volume 150, Issue 4, Pages e117-e120 (October 2016)
DOI: /j.chest
Copyright © 2016 American College of Chest Physicians Terms and Conditions

2. Figure 1
A 5-min polysomnographic recording during stage N1 and N1 non-rapid eye movement sleep shows a pattern of cyclic central apneas followed by hyperpneas (Hunter-Cheyne-Stokes respiration) with cycle lengths of 45 to 50 s causing oxygen desaturations.
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Copyright © 2016 American College of Chest Physicians Terms and Conditions

3. Figure 2
Electrocardiogram of V2 with an epsilon wave, T-wave inversions, and ventricular extrasystoles. The open headed arrows indicate epsilon waves.
CHEST  , e117-e120DOI: ( /j.chest )
Copyright © 2016 American College of Chest Physicians Terms and Conditions

4. Figure 3
Echocardiographic four-chamber view showing an enlarged right ventricle and right atrium. There are no hints of hypertrophic cardiac muscle. LA = left atrium; LV = left ventricle; RA = right atrium; RV = right ventricle.
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Copyright © 2016 American College of Chest Physicians Terms and Conditions

5. Figure 4
Cardiac MRI showing enlarged right ventricle; the arrows indicate fibrosis of the right ventricle. See Figure 3 legend for expansion of abbreviations.
CHEST  , e117-e120DOI: ( /j.chest )
Copyright © 2016 American College of Chest Physicians Terms and Conditions