A patient develops sudden palpitation with HR 150/ min, regular. What could be the cause –
**Core Concept**
The patient's symptoms suggest a sudden onset of tachyarrhythmia, likely supraventricular tachycardia (SVT), characterized by a rapid heart rate originating above the ventricles. This condition often presents with palpitations, regular rhythm, and a heart rate exceeding 100 beats per minute.
**Why the Correct Answer is Right**
The likely cause of SVT is an abnormal electrical conduction pathway in the heart, often involving the atrioventricular (AV) node. In this case, a re-entrant circuit is formed, allowing the electrical impulse to propagate rapidly through the AV node and cause a rapid heart rate. This can be triggered by various factors, including stress, caffeine, or certain medications.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided. Please provide the complete question for a thorough explanation.
* **Option B:** This option is not provided. Please provide the complete question for a thorough explanation.
* **Option C:** This option is not provided. Please provide the complete question for a thorough explanation.
* **Option D:** This option is not provided. Please provide the complete question for a thorough explanation.
**Clinical Pearl / High-Yield Fact**
SVT can be a life-threatening condition, and prompt recognition and treatment are essential. A key diagnostic clue is the presence of a regular rhythm, which distinguishes SVT from other tachyarrhythmias like atrial fibrillation.
**Correct Answer:** .
Please provide the rest of the options to complete the explanation.