ARDMS Vascular Q-Bank Study Guide (+750 Questions with Verified Answers 100%) Kaplan University

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ARDMS Vascular Q-Bank Study Guide (+750 Questions with Verified Answers 100%) Kaplan University what are some limitations of visceral artery duplex imaging? {{Correct Ans- presence of excessive bowel... gas (air disperses the US and shadows structures beneath); fasting, well hydrated patient can help minimize bowel gas patient obesity inability to properly position patient deep vessels - requires lower frequency (lower resolution than peripheral arteries - deeper imaging results in slower frame rates, particularly with color doppler patient positioning for visceral artery duplex? {{Correct Ans- supine, minimal head elevation right and left lateral decubitus position for access to the flank any position that allows visualization of the vessel of interest multiple acoustic windows are often required what are some indications for mesenteric duplex imaging? {{Correct Ans- identify stenosis or occlusion patient presentation - dull, achy, or crampy abdominal pain 15-30 min after eating as suspect for mesenteric ischemia due to a stenosis or occlusion limiting blood flow necessary for digestion acute vs. chronic mesenteric ischemia: patients with acute ischemia, often from embolus, will present with severe abdominal pain - possible medical emergency due ti intestinal necrosis follow up of known stenosis, post intervention, angioplasty, stent, bypass grafts technique for mesenteric artery duplex? {{Correct Ans- fasting is required curvilinear transducer (2-5 MHz) supine patient, begin imaging (with/without color doppler), longitudinal plane just below the xiphoid process visualization varies due to peristalsis, bowel motility, and presence of gas vessel diameter may be documented in transverse and/or longitudinal plane spectral doppler should be obtained in each vessel segment in longitudinal view if disease is present, additional data will be required (pre, intra, and post-stenosis - document flow profile) evaluate the aorta for size and presence of AAA or ASO (if present, additional data may be required) for a mesenteric artery duplex, spectral doppler PSV measurement should be obtained in the: {{Correct Ans- aorta (juxta-renal segment) celiac artery - hepatic - splenic superior mesenteric artery - origin/ prox - mid - distal inferior mesenteric -origin - mid - distal if possible what is the food challenge in mesenteric artery duplex imaging? {{Correct Ans- not routinely performed perform baseline exam (pre-prandial) patient ingests a high caloric diet (Ensure) repeat exam after 20-30 minutes (sooner if patient becomes symptomatic) hyperemic response = 10", maximal response = 30" obtain post prandial PSV and EDV from SMA document: - amount of high caloric liquid ingested - presence, time, and duration of symptoms - time of post prandial study what is the inferior mesenteric artery? {{Correct Ans- located 1-3 cm prox to the aortic bifurcation if celiac and SMA normal, isolated IMA stenosis is unlikely to be symptomatic often small- if noted to be large, may suggest collateralization 2 possible connections btw the SMA and IMA - marginal artery of the colon (marginal artery of Drummond) - Arc of Riolan IMA may serve as a collateral to the iliac arteries via branches of the IIA interpretation of celiac artery during a mesenteric artery duplex? {{Correct Ans- normal: < 200 cm/sec (reported range 50-160) abnormal: > 200 cm/sec with post stenotic turbulence occlusion: no detectable signal, retrograde common hepatic artery flow interpretation of SMA during a mesenteric artery duplex? {{Correct Ans- normal: < 275 cm/sec (reported range 110-177) abnormal: > 275 cm/sec with post stenotic turbulence occlusion: no detectable signal, often reconstitutes distally via collaterals [Show More]

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