EKG Challenge No. 7: Young Lady Swooning?

A 22-year-old female with no past medical history presents to the Emergency Department after a syncopal episode at home. She reports feeling lightheaded and then noticed her heart was pounding, prior to passing out. Her mother caught her, and she came to in "about a minute." She was brought to the ED by EMS. On further history, she stated she had not eaten anything today and had just gotten back from a jog outside when she began to feel lightheaded. She had a few similar episodes in the past when she has had blood drawn. Now she feels slightly weak but otherwise back to normal. Fingerstick glucose is normal, as well as CBC, BMP, and U/A. Her pregnancy test is negative. Her EKG is below.

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Read the Case Conclusion  here