Block 9 Flashcards
invented the fogarty catheter that is being used to remove thrombus that has been formed within the arterial system.
THOMAS FOGARTY
professor of vascular surgery who attempted the first cannulation of vessels and taking an x-ray of the wire which is located inside his blood vessels which allows physicians today to do interventional procedures intraluminally of the blood vessels.
ANDREAS GRUNTZIG
very famous thoracic and cardiovascular surgeon. He pioneered the treatment for aortic aneurysms and aortic dissections. He is also part of the team who first invented the artificial heart.
MICHAEL DEBAKEY
invented the palmaz stent which is used to open up blood vessels and also to close those vessels that are abnormally open.
JULIO PALMAZ
one of the endovascular surgeons who invented the stent graft that is being used to exclude large vessel aneurysms.
JUAN PARODI
These are signs that will tell you that the patient may have an arterial occlusive disease.
- Pallor on leg elevation
- Dependent rubor
- Ischemic ulcer
Most common chronic arterial occlusive disease
Atherosclerosis
Intermittent claudication
pain, cramping, discomfort with exercise, relieved with rest
Affects muscle group distal to site of pathology
Intermittent claudication
it is an arterial occlusive disease involving the iliacs.
Leriche’s syndrome
Associated with drop in pressure in affected extremity
Intermittent claudication
abdominal pain, discomfort after consumption of large meal
Visceral angina
Visceral angina can happen in patients with?
Superior mesenteric artery occlusion
- “Fear of eating”
* Weight loss
Visceral angina
Chronic arterial ischemia signs
• Chronic • Hair loss • Thin shiny-looking skin • Brittle, thickened and/or deformed nails • Critical limb ischemia → This happens when occlusion of the blood vessel already reaches 95% or more. • Coolness of distal extremity • Elevation pallor of toes • Dependent rubor upon lowering below heart level • Delayed wound healing • Ulceration • gangrene
2 classifications of peripheral arterial disease
- Fontaine classification
2. Rutherford classification
Fontaine Classification:
Stage I
Asymptomatic
Fontaine Classification:
Stage IIa
Mild claudication
Fontaine Classification:
Stage IIb
Moderate to severe claudication
Fontaine Classification:
Stage III
Ischemic rest pain
Fontaine Classification:
Stage IV
Ulceration or gangrene
Rutherford Classification:
Grade 0
Asymptomatic
Rutherford Classification:
Grade 1
Mild claudication
Rutherford Classification:
Grade 2
Moderate claudication
Rutherford Classification:
Grade 3
Severe claudication
Rutherford Classification:
Grade 4
Ischemic rest pain
Rutherford Classification:
Grade 5
Minor tissue loss (equivalent to ulceration)
Rutherford Classification:
Grade 6
Major tissue loss (equivalent to gangrene)
These classifications are for chronic occlusive arterial disease and should not be confused in patients having an acute arterial occlusion.
Fontaine and Rutherford classification
Decrease LDL to
<100 mg/dl
Virchow’s triad:
o Stasis
o Endothelial injury
o Hypercoagulability
Medications given for chronic arterial ischemia:
- Trental
- Pletal
- Aspirin
- Plavix
generally last resort for chronic arterial ischemia, reserved for life-style changing pathology
Arterial bypass graft
Surgical procedures for chronic limb ischemia
- Arterial bypass graft
- Balloon angioplasty with or without wall stent
- Endarterectomy
- Embolectomy
Thrombolytic agents:
Tissue Plasminogen Activator (tPa)
Streptokinase
Urokinase
Management for CLI candidate for revascularization:
- Imaging (Duplex, angiography, MRA, CTA)
2. Revascularization as appropriate
Management for CLI not candidate for revascularization:
Stable pain and lesion
Medical treatment (non-operative)
Management for CLI not candidate for revascularization:
Not tolerable pain, spreading infection
Amputation
The hardening of tissue or part due to chronic inflammation
Sclerosis
Any of a group of chronic diseases in which thickening, hardening and loss of elasticity of arterial walls result in impaired blood circulation.
Arteriosclerosis
A form of arteriosclerosis characterized by the formation of atheromatous plaques containing cholesterol & lipids on the innermost walls of large and medium sized arteries.
Atherosclerosis
Most common cause of chronic arterial occlusive disease
Atherosclerosis
Hypertension
A systolic blood pressure of >140 mmHg and/or a diastolic blood pressure of >90 mmHg
a.k.a. accelerated hypertension
Malignant hypertension
a.k.a. essential hypertension- unknown etiology
Primary hypertension
clot that is localized on a specific area
Thrombotic
a thrombus that travels
Embolic
6Ps of Acute Arterial Occlusion
→ Pain → Pulselessness → Pallor → Paresthesia → Paralysis → Polar (Poikilothermy)
Clinical Category of Acute Limb Ischemia
Description/Prognosis:
Not immediately threatened
Viable
Clinical Category of Acute Limb Ischemia
Description/Prognosis:
Salvageable if promptly treated
Threatened marginally
Clinical Category of Acute Limb Ischemia
Description/Prognosis:
Salvageable with immediate revascularization
Threatened immediately
Clinical Category of Acute Limb Ischemia
Description/Prognosis:
Major tissue loss or permanent nerve damage
Irreversible
Clinical Category of Acute Limb Ischemia
Sensory Loss:
None
Viable
Clinical Category of Acute Limb Ischemia
Sensory Loss:
Minimal (toes) or none
Threatened marginally
Clinical Category of Acute Limb Ischemia
Sensory Loss:
More than toes; associated with rest pain
Threatened immediately
Clinical Category of Acute Limb Ischemia
Sensory Loss:
Profound, anesthetic
Irreversible
Clinical Category of Acute Limb Ischemia
Muscle weakness:
None
- Viable
2. Threatened marginally
Clinical Category of Acute Limb Ischemia
Muscle weakness:
Mild, moderate
Threatened immediately
Clinical Category of Acute Limb Ischemia
Muscle weakness: Profound paralysis (rigor)
Irreversible
Clinical Category of Acute Limb Ischemia
Arterial Doppler Signals:
Audible
Viable