ABSTRACT
We present a case of a 62-year-old woman who developed an aortic dissection after aortic valve replacement for aortic stenosis and supracoronary replacement of the ascending aorta for aneurysmal dilation. Dynamic compression of the distal aorta by the dissection flap was identified with the detection of abnormal continuous wave Doppler signals heard while performing ankle-brachial indices. Duplex ultrasound (US) and Doppler spectral waveforms confirmed dynamic compression of the distal aorta with each cardiac cycle. We review some of the characteristics of continuous wave Doppler signals, specifically discussing the distinguishing characteristics of pulsus bisferiens, and the use of duplex US in imaging the distal aorta.
Subject(s)
Aortic Aneurysm/diagnosis , Aortic Dissection/diagnosis , Aortic Dissection/surgery , Aortic Aneurysm/surgery , Female , Humans , Middle AgedABSTRACT
As more endovascular interventions are being used in the carotid circulation, including carotid angioplasty and stenting, a reliable imaging modality is needed to follow the results. Currently, duplex ultrasonography, magnetic resonance angiography (MRA), and angiography are the main modalities used. This report presents a case of MRA and duplex ultrasonography providing drastically different images, presenting the clinician with an opportunity to evaluate the various imaging modalities that are used in evaluating carotid stent patency.
