Which of the following physiological factors can influence transcranial Doppler velocities?

During ultrasound-guided thrombin injection of a femoral pseudoaneurysm, which sonographic feature confirms successful thrombosis of the pseudoaneurysm sac?

Which of the following is a potential adverse effect rather than a health benefit associated with oral contraceptive pills?

Mr. Scott is a 46-year-old male who presents with epigastric pain described as a burning sensation that is reproducible on palpation. He is otherwise healthy and has no medication allergies. He has been ruled out for acute coronary syndrome, and testing is positive for Helicobacter pylori. H. pylori eradication requires combination therapy targeting both bacterial protein synthesis and gastric acid suppression. Which of the following drug regimens represents an appropriate pharmacologic combination for H. pylori eradication?

Which duplex finding is most characteristic of an abdominal aortic aneurysm at risk for rupture?

Which of the following vessels contributes directly to the formation of the main portal vein?

A patient with a history of aortobifemoral bypass grafting presents with new-onset leg pain. Which duplex ultrasound finding is most suggestive of graft stenosis?

A sudden onset of severe leg pain, pulselessness, pallor, and paralysis is most consistent with which condition?

Which transcranial Doppler finding is most suggestive of cerebral vasospasm following subarachnoid hemorrhage?

While performing a transcranial Doppler ultrasound, a transient signal is identified within the Doppler spectral waveform. The signal lasts less than 300 milliseconds, is unidirectional, and has an audible “snap”.  Which condition is consistent with these factors?