A 45-year-old man presents with exertional dyspnea and pitting pedal edema. His neck veins are dilated. A diagnosis of superior vena cava (SVC) syndrome is made. What will you do next?
**Core Concept**
The patient's presentation of exertional dyspnea, pitting pedal edema, and dilated neck veins is indicative of right heart failure, likely due to obstruction of the superior vena cava (SVC) by a tumor, thrombus, or other mass lesion. SVC syndrome is a medical emergency that requires prompt diagnosis and treatment to alleviate symptoms and prevent further complications.
**Why the Correct Answer is Right**
The correct answer is to administer **furosemide**, a loop diuretic that will help reduce fluid overload and alleviate symptoms of right heart failure. Furosemide works by inhibiting the sodium-potassium-chloride cotransporter in the ascending limb of the loop of Henle, leading to increased urine production and decreased fluid volume in the body. This will help decrease venous pressure, alleviate neck vein distension, and improve symptoms of dyspnea and edema.
**Why Each Wrong Option is Incorrect**
* **Option A:** Administration of **nitrates** may actually worsen symptoms by increasing venous capacitance and reducing cardiac preload, potentially exacerbating right heart failure.
* **Option B:** **Digoxin** is not indicated in this scenario as it is primarily used for the treatment of atrial fibrillation and heart failure with reduced ejection fraction, not for acute management of SVC syndrome.
* **Option C:** **Anticoagulation** may be necessary in some cases of SVC syndrome, but it is not the immediate next step in management and is not directly related to the patient's symptoms of fluid overload.
**Clinical Pearl / High-Yield Fact**
In patients with SVC syndrome, it is essential to quickly diagnose and treat the underlying cause, as delayed intervention can lead to severe consequences, including respiratory failure, cardiac arrest, and even death.
**Correct Answer:** C. Furosemide