Anurysm/triple A

A 69-year-old man with a 40-pack-year smoking history presents for preventive care without abdominal or back pain. BP is 132/78 mm Hg, HR is 72/min, and abdominal examination is unremarkable. What screening study is recommended by the lecture for this patient?

Abdominal ultrasonography. Screening is recommended for men aged 65–75 years who have ever smoked.

A 67-year-old man who currently smokes presents for preventive vascular screening without pain. BP is 138/82 mm Hg, HR is 76/min, and his abdomen is soft and nontender. What intervention should accompany his screening program?

Smoking cessation and cardiovascular risk factor optimization. The lecture recommends including both measures in all screening programs.

A 72-year-old man with hypertension and emphysema undergoes imaging for an unrelated complaint. He has no abdominal pain, BP is 136/80 mm Hg, and imaging reveals a 3.6-cm dilation of the major midline abdominal artery. What is the most likely diagnosis?

Abdominal aortic aneurysm. The lecture defines an aneurysm as an abdominal aortic diameter exceeding 3 cm, and many are discovered incidentally.

A 74-year-old man with smoking-related lung disease presents with intermittent midabdominal pain radiating to his lower back. BP is 142/84 mm Hg, HR is 80/min, and examination reveals an expansile abdominal mass with pain increased by pressure. What is the most likely underlying diagnosis?

Symptomatic abdominal aortic aneurysm. Expansion can cause midabdominal pain radiating to the lower back, with pain exacerbated by palpation or pressure.

A 76-year-old man with hypertension and a long smoking history suddenly develops severe abdominal and lower back pain. BP is 76/44 mm Hg, HR is 126/min, and examination reveals a pulsatile abdominal mass. What is the most likely diagnosis?

Ruptured abdominal aortic aneurysm. Sudden severe pain and hypotension in this setting indicate rupture, typically with bleeding into the retroperitoneum.

A 73-year-old man with atherosclerosis presents with a newly detected pulsatile abdominal mass but no pain. BP is 130/76 mm Hg, HR is 74/min, and he is alert with warm extremities. What is the most appropriate initial diagnostic study?

Abdominal ultrasonography. The lecture identifies abdominal ultrasound as the diagnostic study of choice for suspected abdominal aortic aneurysm.

A 78-year-old man with hypertension develops sudden severe abdominal pain and collapses. BP is 70/40 mm Hg, HR is 132/min, and a pulsatile abdominal mass is palpable while emergency repair is being organized. What bedside imaging modality can rapidly support the suspected diagnosis?

Point-of-care abdominal ultrasonography. The lecture identifies POCUS as an option when evaluating suspected rupture; the presentation requires emergent repair.

A 75-year-old man with a smoking history presents with abrupt abdominal pain and hypotension. BP is 82/48 mm Hg, HR is 118/min, and emergency evaluation confirms a contained rupture of a markedly dilated abdominal artery. What is the next best step in management?

Emergent repair. A contained rupture remains a surgical emergency despite temporary containment of the bleeding.

A 70-year-old man with hypertension has an asymptomatic 5.0-cm dilation discovered during surveillance imaging. BP is 128/76 mm Hg, HR is 70/min, and abdominal examination is nontender. What imaging study should now be obtained to define anatomy for potential repair?

CT angiography with IV contrast. At approximately 5 cm, the lecture recommends CTA to define arterial anatomy and support repair planning.

A 68-year-old man with hyperlipidemia has a stable 3.7-cm dilation detected during abdominal screening. BP is 126/74 mm Hg, HR is 68/min, and he has no abdominal tenderness or back pain. According to the lecture, when should routine surveillance imaging be repeated?

In 3 years. The lecture recommends surveillance every 3 years for diameters of 3.0–3.9 cm.

A 71-year-old man with hypertension has a stable 4.3-cm dilation on abdominal surveillance imaging. BP is 132/80 mm Hg, HR is 72/min, and he denies abdominal or back pain. According to the lecture, what is the recommended surveillance interval?

Every 12 months. The lecture assigns annual follow-up imaging to diameters of 4.0–4.9 cm.

A 72-year-old man with a smoking history has an asymptomatic 5.2-cm dilation that has remained stable after vascular evaluation. BP is 124/72 mm Hg, HR is 66/min, and his abdomen is nontender. According to the lecture, what is the routine surveillance interval if repair is deferred?

Every 6 months. The lecture recommends this interval for diameters of at least 5 cm, while repair decisions also depend on sex, symptoms, growth, and morphology.

A 69-year-old man with atherosclerosis has an asymptomatic 4.7-cm dilation on abdominal ultrasonography. BP is 130/78 mm Hg, HR is 70/min, and examination reveals no tenderness. What specialty referral is indicated now?

Vascular surgery referral. The lecture recommends referral for all abdominal aortic aneurysms larger than 4.5 cm, before the usual male elective repair threshold.

A 73-year-old man with hypertension has a fusiform abdominal arterial dilation measuring 5.6 cm without recent growth or pain. BP is 128/74 mm Hg, HR is 72/min, and examination is nontender. What is the next best management step?

Elective repair. The lecture recommends elective repair at a diameter of at least 5.5 cm in men.

A 70-year-old woman with hypertension and a smoking history has a 5.1-cm fusiform abdominal arterial dilation. BP is 134/78 mm Hg, HR is 74/min, and she has no pain or tenderness. What is the next best management step?

Elective repair. The lecture uses a lower repair threshold for women: at least 5.0 cm.

A 68-year-old man with hypertension has an abdominal arterial dilation that increased from 4.1 cm to 4.8 cm over 6 months. BP is 132/76 mm Hg, HR is 70/min, and he denies pain. What is the next best management step?

Proceed toward repair because of rapid expansion. Growth greater than 0.5 cm in 6 months is an indication for repair even below the usual diameter threshold.

A 74-year-old man with a smoking history develops new persistent midabdominal pain radiating to his back. BP is 138/82 mm Hg, HR is 88/min, and a previously documented 4.8-cm arterial dilation is now tender on examination. What is the next best step in management?

Urgent repair evaluation. Pain and tenderness may indicate impending rupture and override routine surveillance based on diameter alone.

A 66-year-old man with hypertension undergoes evaluation of an incidental 4.2-cm abdominal arterial abnormality. BP is 128/76 mm Hg, HR is 68/min, and imaging shows a localized pouch projecting from only one side of the vessel. What management is indicated by this morphology?

Repair evaluation for a saccular aneurysm. Saccular morphology carries a higher rupture risk and is an additional indication for repair in the lecture.

A 71-year-old man with atherosclerosis has an incidental abdominal arterial enlargement without symptoms. BP is 130/78 mm Hg, HR is 72/min, and imaging shows a symmetrical spindle-shaped dilation involving all sides of the vessel. What morphological classification describes this finding?

Fusiform aneurysm. Fusiform aneurysms produce uniform circumferential enlargement and are the most common morphological type.

A 70-year-old man with hypertension undergoes preoperative assessment for a large abdominal arterial dilation. BP is 126/74 mm Hg, HR is 68/min, and imaging shows that the abnormal segment lies entirely below the origins of the kidney-supplying branches. What anatomical subtype describes this lesion?

Infrarenal abdominal aortic aneurysm. An infrarenal aneurysm lies entirely below the renal arteries and is the most common anatomical subtype.

A 72-year-old man with a smoking history undergoes imaging for an asymptomatic abdominal arterial enlargement. BP is 132/78 mm Hg, HR is 70/min, and the enlarged segment begins immediately below the kidney-supplying branch origins. What anatomical subtype describes this lesion?

Juxtarenal abdominal aortic aneurysm. The lecture defines juxtarenal aneurysms as located immediately below the renal arteries.

A 69-year-old man with hypertension undergoes repair planning for an abdominal arterial dilation. BP is 128/76 mm Hg, HR is 72/min, and imaging shows that the abnormal segment involves the origins of the branches supplying both kidneys. What anatomical subtype describes this lesion?

Pararenal abdominal aortic aneurysm. Pararenal aneurysms occur at the level of the renal arteries and involve their origins.

A 67-year-old man with atherosclerosis undergoes imaging for an abdominal arterial enlargement. BP is 134/80 mm Hg, HR is 74/min, and the dilated segment extends above the origins of the kidney-supplying branches. What anatomical subtype describes this lesion?

Suprarenal abdominal aortic aneurysm. Suprarenal aneurysms extend above the renal arteries and may involve nearby branch vessels.

A 75-year-old man with coronary artery disease is being evaluated for repair of a 5.8-cm abdominal arterial dilation. BP is 128/72 mm Hg, HR is 68/min, and his anatomy permits placement of a stent-graft through femoral access. Which repair approach has lower perioperative morbidity and mortality in the lecture?

Endovascular aneurysm repair, or EVAR. EVAR introduces a stent-graft through femoral access and has lower reported perioperative morbidity and mortality than open repair.

A 73-year-old man with hypertension returns after successful placement of an abdominal arterial stent-graft. BP is 124/70 mm Hg, HR is 66/min, and he has no abdominal pain or tenderness. What long-term follow-up requirement should be emphasized?

Lifelong monitoring. The lecture specifically identifies lifelong monitoring as a requirement after EVAR.

A 76-year-old man with coronary artery disease undergoes open graft repair of a large abdominal arterial dilation. Postoperatively, BP is 118/70 mm Hg, HR is 82/min, and the team monitors closely for the complication identified as most common in the lecture. Which complication is this?

Myocardial infarction. The lecture identifies MI as the most common complication of open repair and the leading cause of death among patients who survive repair.

A 69-year-old man with hypertension has a chest radiograph obtained during an unrelated evaluation. BP is 138/80 mm Hg, HR is 74/min, and the film shows a calcified outline of an enlarged central arterial contour within the chest. What is the most appropriate definitive imaging study?

CT of the chest with IV contrast. The lecture identifies contrast-enhanced CT as the imaging modality of choice for diagnosis and screening of thoracic aortic aneurysm.

A 66-year-old woman with hypertension undergoes evaluation of an incidentally enlarged arterial contour in the chest. BP is 130/76 mm Hg, HR is 70/min, and she has no acute pain or pulse asymmetry. Which alternative imaging modality can characterize the lesion’s anatomy and size according to the lecture?

Magnetic resonance angiography. The lecture identifies MRA as an option for evaluating thoracic aortic anatomy and aneurysm size.

A 64-year-old man with long-standing hypertension develops sudden severe persistent chest pain radiating down his back. BP is 196/108 mm Hg, HR is 104/min, and examination reveals unequal peripheral pulses with a new diastolic murmur. What is the most likely diagnosis?

Aortic dissection. Abrupt severe chest pain, unequal pulses, hypertension, and a new diastolic murmur are characteristic findings in the lecture.

A 58-year-old man with uncontrolled hypertension presents with sudden chest pain radiating to his neck and back. BP is 188/104 mm Hg, HR is 98/min, and his left radial pulse is diminished; imaging confirms blood tracking between layers of the arterial wall. Which wall layer contains the dissecting blood?

The tunica media. A spontaneous intimal tear permits blood to enter and dissect through the aortic media.

A 62-year-old man with hypertension develops abrupt severe chest pain and transient right-sided weakness. BP is 190/106 mm Hg, HR is 102/min, and peripheral pulses are unequal. What mechanism best explains the neurological deficit in the suspected vascular disorder?

Extension of the dissection into a carotid artery. The lecture describes propagation into branch vessels, including the carotids, which can compromise cerebral perfusion.

A 65-year-old man with hypertension presents with sudden severe chest pain radiating to his back. BP is 184/102 mm Hg, HR is 96/min, and his right radial pulse is weaker than his left; he remains alert and adequately perfused. What is the imaging modality of choice?

CT of the chest, abdomen, and pelvis with IV contrast. The lecture identifies this study as the modality of choice for evaluating suspected aortic dissection and its extent.

A 60-year-old man with uncontrolled hypertension develops sudden persistent chest pain radiating to his back. BP is 192/110 mm Hg, HR is 100/min, and examination reveals unequal pulses despite a normal ECG. What is the next best diagnostic step?

CT of the chest, abdomen, and pelvis with IV contrast. Up to one-third of patients with aortic dissection have a normal ECG, so a normal tracing does not exclude the diagnosis.

A 63-year-old man with hypertension presents with abrupt severe chest pain and syncope. BP is 178/98 mm Hg, HR is 98/min, and examination reveals unequal pulses; a chest radiograph is obtained during evaluation. What radiographic finding would support the suspected diagnosis?

A widened mediastinum. The lecture identifies mediastinal widening as a possible chest radiograph finding in aortic dissection.

A 59-year-old man with poorly controlled hypertension presents with sudden severe chest and back pain. BP is 198/112 mm Hg, HR is 110/min, and unequal radial pulses raise concern for an acute arterial wall tear. What is the first-line IV pharmacologic agent specifically named in the lecture?

IV labetalol. Labetalol blocks alpha and beta receptors, lowers heart rate, and provides rapid blood pressure control.

A 61-year-old man with hypertension develops sudden chest pain radiating to his back. BP is 194/108 mm Hg, HR is 108/min, and unequal pulses prompt initiation of IV labetalol. What physiological effect makes beta-blockade first-line therapy for this condition?

Reduction of left ventricular ejection force. The lecture prioritizes beta-blockers because they reduce the force acting on the diseased arterial wall while lowering heart rate and blood pressure.

A 57-year-old man with hypertension presents with abrupt chest and back pain and unequal peripheral pulses. BP is 188/106 mm Hg, HR is 104/min, and IV medical therapy is started after confirmation of an acute arterial wall tear. According to the lecture, what blood pressure and heart rate targets should guide treatment?

Systolic BP 100–120 mm Hg and HR 60–70/min. These are the lecture’s stated targets for aggressive blood pressure and heart rate lowering.

A 64-year-old man with hypertension presents with sudden severe chest pain radiating to his back. Initial BP is 202/112 mm Hg and HR is 110/min; after labetalol, HR is 66/min but systolic BP remains 158 mm Hg. Which additional IV medication is named in the lecture for inadequate blood pressure control?

Nicardipine. The lecture lists this calcium channel blocker when beta-blockade does not adequately lower blood pressure.

A 60-year-old man with hypertension has sudden severe chest and back pain with unequal pulses. BP is 182/100 mm Hg, HR is 96/min, and he continues to report severe pain while definitive treatment is organized. Which analgesic is specifically recommended in the lecture?

Morphine. The lecture includes morphine for pain control as part of medical management of aortic dissection.

A 56-year-old man with hypertension presents with abrupt chest pain and a new diastolic murmur. BP is 186/104 mm Hg, HR is 100/min, and imaging shows a wall tear involving the segment immediately above the heart and extending through the arch into the descending segment. Which Stanford classification describes this pathology?

Stanford type A. Any dissection involving the ascending aorta is type A, regardless of how far it extends.

A 55-year-old woman with hypertension presents with sudden severe anterior chest pain. BP is 180/98 mm Hg, HR is 96/min, and imaging shows a wall tear confined to the initial upward-running segment immediately above the heart. Which DeBakey classification describes this pathology?

DeBakey type II. Type II originates in and remains confined to the ascending aorta.

A 58-year-old man with hypertension develops sudden chest pain followed by back pain. BP is 190/106 mm Hg, HR is 102/min, and imaging shows a tear beginning immediately above the heart and propagating through the arch into the downward-running thoracic segment. Which DeBakey classification describes this pathology?

DeBakey type I. Type I originates in the ascending aorta and propagates at least into the arch, often extending farther distally.

A 67-year-old man with hypertension develops abrupt severe back and chest pain. BP is 188/102 mm Hg, HR is 98/min, and imaging shows a tear confined to the downward-running thoracic segment with no involvement of the initial segment above the heart. Which Stanford classification describes this pathology?

Stanford type B. Type B dissections do not involve the ascending aorta.

A 62-year-old man with hypertension develops sudden severe back pain. BP is 182/100 mm Hg, HR is 94/min, and imaging shows a tear originating in the downward-running thoracic segment and extending toward the abdomen without proximal involvement. Which DeBakey classification describes this pathology?

DeBakey type III. Type III originates in the descending aorta and extends distally.

A 59-year-old man with hypertension presents with sudden chest pain and unequal pulses. BP is 176/98 mm Hg, HR is 96/min, and imaging confirms a wall tear involving the segment immediately above the heart. What is the definitive next step in management?

Urgent surgical repair. All Stanford type A dissections require urgent surgical intervention according to the lecture.

A 68-year-old man with hypertension presents with abrupt chest and back pain. BP is 180/100 mm Hg, HR is 98/min, and imaging shows a tear confined to the downward-running segment; his kidneys, abdominal organs, and extremities remain adequately perfused. What management approach is supported by the lecture?

Blood pressure control with consideration of early stent-graft treatment. The lecture states that type B dissections without malperfusion can be managed with BP control and early stent grafts.

A 65-year-old man with hypertension develops sudden severe back pain followed by a cold, painful right leg. BP is 184/102 mm Hg, HR is 104/min, and the right pedal pulses are absent; imaging shows a tear confined to the downward-running segment with branch-vessel compromise. What is the next best step in management?

Urgent intervention to restore perfusion. The lecture requires urgent surgery for type B dissection complicated by renal, visceral, or extremity malperfusion.

A 63-year-old woman with hypertension returns for long-term follow-up after treatment of an acute arterial wall tear that created a false channel. BP is 122/72 mm Hg, HR is 66/min, and she has no recurrent pain or pulse asymmetry. According to the lecture, what routine long-term imaging is required?

Yearly CT imaging. The lecture recommends annual CT because an aneurysm may develop in the false lumen.

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