LE Amputation Etiology Flashcards

(40 cards)

1
Q

It is estimated that > ________ individuals are living with the loss of 1 or more limbs in the US. Rates increase dramatically with _____.

A
  • 2 million

- age

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2
Q

82% of amputations are due to _________.

-Secondary to complications of _____, _____.

A
  • vascular disease

- diabetes, PAD

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3
Q

What is important in reducing the incidence of amputations?

A
  • Early patient education

- Proper foot care

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4
Q

Majority of LE amputations are due to __________ while a majority of UE amputations are due to _________.

A
  • vascular disease

- trauma

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5
Q

Why are the rates of amputation decreasing among diabetics, trauma patients, and cancer patients, despite an overall increase in these conditions?

A

We are doing a better job of educating patients and managing diabetes.

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6
Q

Do comorbidities increase the risk of amputations?

A

Yes

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7
Q

Are males or females more likely to have dysvascular and trauma related amputations?

A

Males

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8
Q

Is there racial disparity in regards to amputations?

A

Yes, African Americans, Hispanic American, and Native Americans are more likely.

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9
Q

Trauma and cancer related amputations are on the _______.

A

decline

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10
Q

What are the top 4 causes of amputation (in order)?

A
  • Diabetes and PAD (Dysvascular Disease)
  • Trauma
  • Cancer
  • Congenital Deficiencies
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11
Q

____________ is the most common risk factor for ulcer development in diabetes.

A

Peripheral Neuropathy

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12
Q

Describe the cascade of symptoms of peripheral neuropathy in diabetics that leads to amputation.

A
  • Elevated Blood Sugars damages blood vessels and nerves leading to
  • Loss of Protective Sensation resulting in blister or minor injury leading to a
  • Ulceration that is non-healing causing
  • Amputation
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13
Q

What are the 3 clinical signs of peripheral neuropathy?

A
  • Deficits in sensation
  • Motor impairments
  • Autonomic dysfunction (different color, hair loss)

All these lead to a vulnerability of the foot to high-pressure and repetitive low-pressure traumas.

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14
Q

What are some other diabetic complications that lead to amputation other than peripheral neuropathy?

A
  1. ) Severe ischemic pain
  2. ) Absent pulses
  3. ) Local necrosis
  4. ) Osteomyelitis (bone infection)
  5. ) Systemic toxicity
  6. ) Acute embolism
  7. ) DVT
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15
Q

What are the 2 classic symptoms of PAD?

A
  1. ) Intermittent claudication (leg pain brought about by activity)
  2. ) Loss of one or more LE pulses
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16
Q

What are the 3 risk factors of PAD?

A
  1. ) Poorly managed HTN
  2. ) High cholesterol and triglyceride levels
  3. ) History of tobacco use
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17
Q

The 3 risk factors for PAD are also risk factors for _________ and _________.

A
  • Stroke

- Cardiovascular Disease

18
Q

How do we prevent limb loss in patients with diabetes?

A
  • Foot screens (protective sensation, skin temp, distal pulses, visual observation)
  • Patient recommendations (daily foot checks)
19
Q

Do all diabetic patients receive foot screens?

20
Q

What is included in a foot screen?

A
  • Protective sensation with 10g monofilament
  • Skin Temp with palpations for distal pulses (looking for elevated)
  • Distal Pulses (arteriosclerosis obliterans)
  • Visual Observation (nail shape and color, deformities, swelling, callus formation)
21
Q

Protective sensation portion of the foot screen is done with a __g monofilament.

22
Q

Why are we looking for elevated temperatures when doing a foot screen?

A

Elevated temps show signs of inflammatory response.

23
Q

When educating patient on performing daily foot checks, what do we tell them to look for?

A
  • Increased temp
  • Check pulse
  • Nail color change
  • Open wounds
24
Q

What do we do if our patients cant see their feet either from obesity or lack of mobility?

A
  • Teach them to use a mirror

- Teach caregiver

25
Bottom Line: - ___________ and _____ are the major predisposing risk factors for LE amputation in individuals with DM. - Amputations in this population are associated with: - Significant __________ - Significant _________ limitations - Future disability - Another LE amputation - __________ (33% in 1 year) - Increased health care costs
-Peripheral neuropathy and PAD - morbidity - functional - mortality
26
Why would an amputation due to diabetes predispose an individual for a second amputation or revision?
- Can be contralateral limb but often times the same limb | - Surgical incisions don't have good blood flow or blood getting there isn't oxygenated leading to a 2nd amputation.
27
What is the 2nd leading cause for amputations behind Diabetes and PAD?
Trauma
28
What are the leading causes of trauma amputation?
- MVA - Farming accidents - Power tools - Firearms - Burns and electrocutions
29
What is the typical patient profile for an individual who suffers limb loss from trauma?
- MEN - 20-29 yo - Primary cause of UE amp.
30
There tends to be an increased __________ impact with trauma amputations.
psychological
31
What are some challenges of traumatic amputations?
- Limb length, shape (for prosthetics) - Partial vs. full amputation - Multiple surgeons - Tissue viability and loss - Pain - Other injuries
32
What is the 3rd leading cause for amputations behind trauma?
Cancer
33
Cancer amputation is a result of _________ at or near epiphysis of long bones such as distal ______, proximal _______, proximal ________.
- osteosarcoma | - distal femur, proximal tibia, proximal humerus
34
What is the typical patient profile for an individual who suffers limb loss from cancer?
- Male | - Late childhood through early adulthood (~12-24)
35
What are some other factors of cancer amputation?
- chemo and radiation | - surgery
36
What do we look for in patients with osteosarcoma?
- Pain with weightbearing - Hx of worsening, deep local pain - Fractures (often first sign)
37
What is the 4th leading cause for amputations behind cancer?
Congenital Deficiency
38
Surgical intervention is ____ common with congenital deficiency.
less
39
What are challenges for pediatric amputees?
- Rapid growth - Cosmesis - Provide for function
40
Main Takeaways: - ________ disease is the leading cause of LE amputation (diabetic complications). - ______ more affected than ________. - Lower limb __x more likely that upper limb - Traumatic amputations are more likely to occur in men, __-__ yo. - _______ is third leading cause. - Congenital deformity/deficiency is less than _% of all amputations.
- Dysvascular - Males, females - 11x - 20-29 yo - Cancer - 1%