114A031
- A 26-year-old woman presented to the emergency room with palpitations and shortness of breath that started suddenlywhile she was eating breakfast. Although the health-screening examination performed three weeks ago showed delta wavesin herECG, echocardiography takenat anearbyhospital showed no abnormal findings. Atpresentation, she was slightlyhypotensive with a blood pressure of 96/68 mmHg. HerECGonadmission showed a narrowQRS-complex tachycardia at arate of 180/min. Neither ST elevation nor T wave abnormality was present.
- What is themostprobable diagnosis of the arrhythmia?
- a Sinus tachycardia
- b Sick sinus syndrome
- c Ventricular tachycardia
- d Supraventricular tachycardia
- e Complete atrioventricular block