A 62-year-old loses consciousness in the street and resuscitative efforts are undertaken. In the emergency room an electrocardiogram is obtained, part of which is shown below. Which of the following disorders could account for this Man’s presentation?
## **Core Concept**
The question involves a patient presenting with sudden loss of consciousness, which suggests a cardiac cause given the context of resuscitative efforts and an electrocardiogram (ECG) being performed. The ECG findings are crucial for diagnosing various cardiac conditions.
## **Why the Correct Answer is Right**
The correct answer, **D.**, likely corresponds to a specific ECG pattern or diagnosis that could lead to sudden loss of consciousness, such as a myocardial infarction or a life-threatening arrhythmia. Conditions like ventricular tachycardia or ventricular fibrillation can cause sudden cardiac death and would necessitate immediate medical attention, including resuscitative efforts.
## **Why Each Wrong Option is Incorrect**
- **Option A:** This option does not provide enough information to assess its accuracy directly, but if it represents a benign or unrelated condition (e.g., a normal ECG or a condition not typically associated with sudden loss of consciousness), it would be incorrect.
- **Option B:** Similarly, without specifics, if this option does not align with ECG findings indicative of a life-threatening condition that could cause sudden loss of consciousness, it would be incorrect.
- **Option C:** This option would be incorrect if it represents a condition not associated with the patient's presentation of sudden loss of consciousness or if it does not match the ECG findings suggestive of a severe cardiac condition.
## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **sudden cardiac death** is often due to ventricular arrhythmias (like ventricular tachycardia or fibrillation) in patients with underlying heart disease. An ECG is critical in identifying such conditions.
## **Correct Answer: D.**