CPD Webinar Questions - Intraoperative Case Conference

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I confirm that I either attended the live webinar on 17 August 2026 or viewed the on-demand webinar prior to completing these CPD questions and claiming CPD points.:: Yes
1. Which TOE feature is most characteristic of the FALSE lumen in acute aortic dissection?:: A. Systolic expansion with brisk antegrade flowB. Diastolic expansion with sluggish flow and spontaneous echo contrastC. Higher systolic velocity than the adjacent lumenD. Consistent collapse during diastole
2. A patient with acute type A dissection has severe eccentric AR. The annulus and sinotubular junction are not dilated, but the dissection extends into the root and one normal cusp prolapses. What is the most likely mechanism of AR?:: A. Functional malcoaptation secondary to sinotubular junction dilatationB. Disruption of commissural support from extension of the dissection into the rootC. Primary degenerative leaflet prolapseD. Dynamic LVOT obstruction altering cusp closure
3. Which region of the thoracic aorta is classically most difficult to visualise adequately with TOE?:: A. Aortic rootB. Proximal ascending aortaC. Distal ascending aorta and proximal archD. Descending thoracic aorta
4. During CPB via femoral cannulation, TOE in a patient with extensive type A dissection shows rapid false-lumen expansion, systolic true-lumen compression and markedly reduced true-lumen flow. What is the most concerning interpretation?:: A. Successful decompression of the false lumenB. Retrograde false-lumen perfusion causing dynamic true-lumen obstructionC. Static branch-vessel obstructionD. An expected physiological change following initiation of CPB
5. A linear echogenic structure is seen within the ascending aorta on TOE. Which finding most strongly supports a true dissection flap rather than reverberation artefact?:: A. It is visible in only one imaging planeB. It remains at a fixed distance from the transducerC. It lies parallel to the posterior aortic wallD. It demonstrates independent motion and is reproducible in multiple imaging planes
6. Following ascending aortic/root replacement for type A dissection with coronary button reimplantation, TOE shows a new regional wall-motion abnormality after separation from CPB. What targeted TOE assessment should be performed next?:: A. Measure the residual descending false lumenB. Quantify LV diastolic functionC. Assess flow in the reimplanted coronary arteries and look for coronary button kinking or obstructionD. Measure the prosthetic aortic valve gradient
7. During TOE examination of an acute aortic dissection, an intimal flap is visualised in the descending thoracic aorta. Which finding most strongly supports the location of an intimal entry or re-entry tear?:: A. A focal colour Doppler jet traversing the intimal flap between the true and false lumensB. Spontaneous echo contrast within the false lumenC. Diastolic expansion of the false lumenD. Thrombus within part of the false lumen
8. Following repair of a type A dissection, the proximal repair is satisfactory. Which descending-aortic TOE finding is most concerning for persistent high pressure within the residual false lumen?:: A. Small false lumen containing dense spontaneous echo contrastB. Complete false-lumen thrombosis with expansion of the true lumenC. Persistent false-lumen patency associated with marked true-lumen compressionD. Slow retrograde false-lumen flow with a widely patent true lumen

CPD Webinar Questions - Intraoperative Case Conference - Aortic Dissection

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CPD Webinar Questions - Intraoperative Case Conference - Aortic Dissection

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