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41 Cards in this Set

  • Front
  • Back
How do you diagnose PAD?
1. Claudication
2. Brachial and Ankle blood pressure before and after exercise is best test for functional impairment.
3. Angiography is the best test for defining location of disease. CT And MR angiography very good at this.
What do you use to treat PAD?
1. Stop Smoking
2. Excercise > 30 min daily
3. Cilostazol- a PDE inhibitor that increases cAMP in plts which results in decreased plt aggregation. Only treats sxs!
4. Pentoxifylline
When should you not use cilostazol
LV dysfunction- causes salt water retention.
If patients have PAD what is their risk of MI and death?
at least double for asx PAD. more than double for sx PAD.
List the causes of PAD
1. arteriosclerosis (smoking and DM)
2. arteritis (CTD, takayasu)
3. Buerger disease (aka thromboangiitis obliterans)
4. Popliteal Artery Entrapment
5. Trauma (jackhammer hands)
What is Popliteal Artery Entrapment?
popliteal artery entrapment is arterial compression caused by congenital abnl in poplitieal muscles which causes claudication in young men when walking but not running.
What is pseudoclaudication?
Lumbar spinal stenosis
relieved by sitting down (flexing spine) but not by standing still.
Exacerbated by anything that extends spine (walking downhill)
What are preventative treatments associated with PAD?
lipid control with statins
consider ASA, plavix as well for cardiac prevention.
What are surgical treatments for PAD?
percutaneous angioplasty and stents.
What should you do with acute peripheral arterial occlusion?
IV heparin protects the collateral circulation.
(many arterial emboli to the lower extremities comes from the heart or aterhomatous emboli from diseased aorta, also possible from aneurysm)
Surgical thrombectom/embolectomy is Treatment of Choice.
What is Buerger's Disease?
Thrombooangitis Obliterans
affects young males <30
associated with smoking
involves medium and small arteries and affects arteries of wrists and hands.
what is PVD?
peripheral vascular disease is the old name for peripheral arterial disease. PAD = PVD
Surgical options for PAD?
aortoiliac/aortofemoral reconstruction, etc
but lots of surgical risk, so percutaneous intervention much preferred
What is raynaud's disease?
constriction of small arteries and arterioles leading to acrocyanosis when cold. usually involves small arteries and arterioles in digits and skin.
what do you use to treat raynaud's disease?
calcium channel blockers, biofeedback, perhaps ntg but that is not first line rx
combination of gangrene and thrombophelbitis makes you think about?
buerger's disease
If you have atherosclerotic carotid disease are you more likely to have MI or TIA?
MI
If TIA symptoms, how should you screen for carotid disease?
Carotid US, or use MRA
At what level of stenosis is CEA indicated?
>70%
Unilateral headache, with TIA sxs or dilated pupil
suspect internal carotid artery dissection
(can also be unilateral neck pain with htn pt)
look for cholesterol emboli on fundoscopic exam
treatment for internal carotid artery dissection which was spontaneous
no treatment, prognosis is excellent.
HTN, Blood Pressure in Arms higher than in legs, young patient, normal CO, LVH on EKG
Coarctation of Aorta
If you meet voltage criteria on EKG, what is your specificity?
95%
You cannot use EKG as screening tool because sensitivity is not high.
What is significant of LVH in terms of prognosis?
LVH Is independent risk factor for early cardiac death based on framingham study.
Complications of Aortic Aneurysms
rupture
atheroembolic disease

(but remember that most emboli originate from heart itself!)
How large does AAA have to be to require surgery?
expanding >0.5cm in 6 months.
any aneurysm larger than 5cm
any aneurysm pressing on surrounding structures
what is peri-operative morbidity and mortality for AAA?
Acute MI and other CAD related problems.
can do preop screening with nuclear stress test if pt has >2 CAD risk factors
what can happened to BP if abdominal aortic aneurysm is not treated?
HTN
Causes of Aortic Dissection
1. HTN
2. Cystic medial necrosis (marfan's)
3. Bicuspid Aortic Valve
3. Coarctation of Aorta
4. 3rd Trimester of Preganancy
DeBakey Classification of Aortic Dissection
I) in ascending and descending aorta
II) proximal to ascending
III) descending aorta alone (after subclavian
Stanford Classification of Aortic Dissection
A) anthing involving ascending aorta
B) Limited to descending aorta
Treatment for Aortic Dissection
decrease the elevated BP by using beta blockers and nitroprusside if necessary.
Ascending dissection - surgery
Descending dissection- medical managment
Diagnose Aortic Dissection
CT and MRI
TEE can accurately diagnose descending dissections
Thoracic Aortic Aneurysms, when to do surgery?
5.5 cm ascending
6.5 descending
if enlarging or pressing on nearby organs
What are the main organisms for subacute IE?
1. Strep Virdians
2. Strep Bovis
3. Staph Epidermidis
4. Enterococcus
5. Fungal
*if strep bovis, must do colonoscopy to rule out cancer
What organisisms cause acute IE?
1. s. aureus
2. group B strep
3. Gram Neg organisism
What do you see in IV drug abusers and pts with prosthetic valves?
staph epidermidis
gram neg endocarditis
staph aureus
Right sided endocarditis makes you wonder about
IV drug abuse
-look for septic embolization
-look for RV enlargement
- onset of RV enlargement is a bad sign
Physical findings in IE?
1. osler nodes (tender, pads of digits)
2. janeway lesions (nontender macules on palms and soles)
3. splinter hemorrhages
4. roth spots- retinal hemorrhage
Endocarditis prophylaxis?
only highest risk patients
1 . prosthetic cardiac valve
2. previous IE
3. congential heart disease, esp with prosthetic device
4. cardiac transplant pts with valvuopathy
endocarditis within 2 months of valvular surgery
seeded during placement, harder to treat, must replace valve if no response to one round of antibx