HRDx Case Study #1
HRDx Case Study #1
- A 28-year-old lady with history of recurrent dizziness during activity. Ambulatory cardiac monitoring was
obtained. - During once episode of dizziness, a rhythm strip showed narrow-complex tachycardia.
- The patient was diagnosed with paroxysmal SVT, and she underwent an EP study. Dual AVN physiology was
observed but SVT could not be induced. Ablation of the AVN slow pathway performed. - The patient continued having recurrent symptoms, and was treated with antiarrhythmic drug therapy, but with
modest efficacy. - The patient remained anxious about her cardiac disease, presenting to ED on multiple occasions, and she lost
her job
HRDx Case Study #1
- When initial ambulatory cardiac monitoring data were reviewed again by HRDx, the narrow-complex
tachycardia found to represent sinus tachycardia, rather than paroxysmal SVT, based on the gradual onset and
offset of the tachycardia. - Those data required trained technician with EP physician’s input to obtain, as the onset and offset of
tachycardia 20 and 15 minutes before and after the time stamp of symptoms. - The patient was reassured regarding the benign nature of symptoms, and she elected to stop drug therapy as
she could tolerate her symptoms now knowing that they were not dangerous.