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ACCP-SEEK Board Review Question of the Month |

Abnormal Finding in an Overnight Sleep Study*

Susan M. Harding, MD, FCCP
Author and Funding Information

*From the ACCP-SEEK program, reprinted with permission. Items are selected by Department Editors Richard S. Irwin, MD, FCCP, and John G. Weg, MD, FCCP. For additional information about the ACCP-SEEK program, call 1-847-498-1400.

Correspondence to: Susan M. Harding, MD, FCCP, Department of Pulmonary/CCM-THT Room 215, University of Alabama at Birmingham, 1900 University Blvd, Birmingham, AL 35294-0015



Chest. 2000;118(6):1817-1818. doi:10.1378/chest.118.6.1817
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Extract

The accompanying Figure 1 is a montage from an overnight sleep study in which each vertical dotted line represents a 30-s epoch. Which of the following is the most likely cause of the findings displayed with arrows in the right and left leg electromyograms (EMGs)?

A. Arousals from obstructive sleep apneas

B. Periodic limb movements of sleep

C. Nocturnal leg cramps

D. Arousals from obstructive sleep hypopneas

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