A 36 year old female recurrent chest pain and palpitation varying in duration and severity and 6-7 ectopics per minute (Possibly supraventrigation is) not related to exertion. Her BP is 86 mm Hg and pulse rate is 86/min. The ideal investigation is
A 36 year old female recurrent chest pain and palpitation varying in duration and severity and 6-7 ectopics per minute (Possibly supraventrigation is) not related to exertion. Her BP is 86 mm Hg and pulse rate is 86/min. The ideal investigation is
💡 Explanation
## **Core Concept**
The patient's symptoms of recurrent chest pain, palpitations, and ectopic beats (6-7 per minute) that vary in duration and severity, and are not related to exertion, suggest a cardiac arrhythmia. The low blood pressure (86 mm Hg) and relatively normal pulse rate (86/min) could indicate a hemodynamically stable but symptomatic arrhythmia. Supraventricular tachycardia (SVT) is a likely diagnosis given these symptoms.
## **Why the Correct Answer is Right**
The ideal investigation for diagnosing and managing SVT or other arrhythmias, especially when the patient is hemodynamically stable, is an **electrocardiogram (ECG or EKG)**. An ECG provides immediate information on the heart's rhythm, rate, and any potential signs of ischemia or other abnormalities. It can help differentiate between various types of supraventricular and ventricular arrhythmias. Given the patient's presentation, an ECG would be crucial for confirming the diagnosis and guiding further management.
## **Why Each Wrong Option is Incorrect**
- **Option A:** While **echocardiography** can provide valuable information on cardiac structure and function, it is not the first-line investigation for diagnosing arrhythmias like SVT. Echocardiography might be useful later to assess for any structural heart disease but is not ideal for immediate diagnosis of arrhythmias.
- **Option B:** **Holter monitoring** involves recording the heart's activity over 24 hours and can be useful for detecting intermittent arrhythmias. However, it is not the immediate next step for a patient presenting acutely with symptoms suggestive of SVT.
- **Option C:** **Exercise stress test** is typically used to evaluate chest pain or palpitations related to exertion and to assess for ischemia. This patient's symptoms are not related to exertion, making this option less suitable as the initial investigation.
## **Clinical Pearl / High-Yield Fact**
A key point to remember is that for acute management of SVT, especially if the patient is stable, an **ECG** is essential for diagnosis. Vagal maneuvers or adenosine can be used for acute termination of SVT if the patient is hemodynamically stable.