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Lorne H. Blackbourne-Surgical recall, Sixth Edition 2011.pdf
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510 Section II / General Surgery

What are the possible postoperative complications after a CEA?

What is the mortality rate after CEA?

What is the perioperative stroke rate after CEA?

What is the postoperative medication?

What is the most common cause of death during the early postoperative period after a CEA?

Define “Hollenhorst plaque”?

CVA, MI, hematoma, wound infection, hemorrhage, hypotension/hypertension, thrombosis, vagus nerve injury (change in voice), hypoglossal nerve injury (tongue deviation toward side of injury—“wheel- barrow” effect), intracranial hemorrhage

1%

Between 1% (asymptomatic patient) and 5% (symptomatic patient)

Aspirin (inhibits platelets by inhibiting cyclo-oxygenase)

MI

Microemboli to retinal arterioles seen as bright defects

CLASSIC CEA INTRAOP QUESTIONS

What thin muscle is cut right

Platysma muscle

under the skin in the neck?

 

What are the extracranial

None

branches of the internal

 

carotid artery?

 

Which vein crosses the carotid bifurcation?

What is the first branch of the external carotid?

Which muscle crosses the common carotid proximally?

Which muscle crosses the carotid artery distally?

Facial vein

Superior thyroidal artery

Omohyoid muscle

Digastric muscle (Think: Digastric Distal)

Which nerve crosses approximately 1 cm distal to the carotid bifurcation?

Which nerve crosses the internal carotid near the ear?

What is in the carotid sheath?

Chapter 66 / Vascular Surgery 511

Hypoglossal nerve; cut it and the tongue will deviate toward the side of the injury (the “wheelbarrow effect”)

Facial nerve (marginal branch)

1.Carotid artery

2.Internal jugular vein

3.Vagus nerve (lies posteriorly in 98% of patients and anteriorly in 2%)

4.Deep cervical lymph nodes

SUBCLAVIAN STEAL SYNDROME

What is it?

Arm fatigue and vertebrobasilar

 

insufficiency from obstruction of the left

 

subclavian artery or innominate proximal to

 

the vertebral artery branch point; ipsilateral

 

arm movement causes increased blood flow

 

demand, which is met by retrograde flow

 

from the vertebral artery, thereby “stealing”

 

from the vertebrobasilar arteries

512 Section II / General Surgery

 

Which artery is most

Left subclavian

commonly occluded?

 

What are the symptoms?

Upper extremity claudication, syncopal

 

attacks, vertigo, confusion, dysarthria,

 

blindness, ataxia

What are the signs?

Upper extremity blood pressure

 

discrepancy, bruit (above the clavicle),

 

vertebrobasilar insufficiency

What is the treatment?

Surgical bypass or endovascular stent

RENAL ARTERY STENOSIS

 

 

 

What is it?

Stenosis of renal artery, resulting in

 

decreased perfusion of the juxtaglomerular

 

apparatus and subsequent activation of the

 

renin-angiotensin-aldosterone system (i.e.,

 

hypertension from renal artery stenosis)

What is the incidence?

10% to 15% of the U.S. population have

 

HTN; of these, 4% have potentially

 

correctable renovascular HTN

 

Also note that 30% of malignant HTN

 

have a renovascular etiology

What is the etiology of the stenosis?

66% result from atherosclerosis (men women), 33% result from fibromuscular dysplasia (women men, average age 40 years, and 50% with bilateral disease)

Note: Another rare cause is hypoplasia of the renal artery

What is the classic profile of

Young woman with hypertension

a patient with renal artery

 

stenosis from fibromuscular

 

dysplasia?

 

What are the associated

Family history, early onset of HTN, HTN

risks/clues?

refractory to medical treatment

 

Chapter 66 / Vascular Surgery 513

What are the signs/

Most patients are asymptomatic but may

symptoms?

have headache, diastolic HTN, flank

 

bruits (present in 50%), and decreased

 

renal function

What are the diagnostic tests?

 

A-gram

Maps artery and extent of stenosis (gold

 

standard)

IVP

80% of patients have delayed nephrogram

 

phase (i.e., delayed filling of contrast)

Renal vein renin ratio

If sampling of renal vein renin levels

(RVRR)

shows ratio between the two kidneys

 

1.5, then diagnostic for a unilateral

 

stenosis

Captopril provocation test

Will show a drop in BP

Are renin levels in serum ALWAYS elevated?

No: Systemic renin levels may also be measured but are only increased in malignant HTN, as the increased intravascular volume dilutes the elevated renin level in most patients

What is the invasive

Percutaneous Renal Transluminal

nonsurgical treatment?

Angioplasty (PRTA)/stenting:

 

With FM dysplasia: use PRTA

 

With atherosclerosis: use PRTA/stent

What is the surgical

Resection, bypass, vein/graft

treatment?

interposition, or endarterectomy

What antihypertensive

ACE inhibitors (result in renal

medication is

insufficiency)

CONTRAINDICATED in

 

patients with hypertension

 

from renovascular stenosis?

 

SPLENIC ARTERY ANEURYSM

 

 

What are the causes?

Women—medial dysplasia

 

Men—atherosclerosis

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