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Assessment of Painful Diabetic Peripheral Neuropathy (pDPN): An Essential Part of the Diabetic Foot Exam Pfizer Medical Affairs FM-LYR-0022 - 1-0 Approved For your personal use. Not for further distribution

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Page 1: Assessment of Painful Diabetic Peripheral Neuropathy (pDPN) · DPN = diabetic peripheral neuropathy pDPN = painful diabetic peripheral neuropathy 1. Centers for Disease Control and

Assessment of Painful Diabetic

Peripheral Neuropathy (pDPN):

An Essential Part of the

Diabetic Foot Exam

Pfizer Medical Affairs

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Page 2: Assessment of Painful Diabetic Peripheral Neuropathy (pDPN) · DPN = diabetic peripheral neuropathy pDPN = painful diabetic peripheral neuropathy 1. Centers for Disease Control and

Objectives

• Review the epidemiology, burden, pathophysiology, and

clinical features of DPN and pDPN

• Review components of the comprehensive foot examination for

patients with diabetes

• Review risk classification based on the comprehensive foot

examination

• Review current guidelines for the screening, diagnosis, and

management of DPN and pDPN

• Provide patient education for appropriate diabetic foot care

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Diagnosed

Undiagnosed

Prevalence of Diabetes in the United States

1. Centers for Disease Control and Prevention. National Diabetes Statistics Report: Estimates of Diabetes and Its Burden in the United States, 2014. Atlanta, GA: U.S. Department of

Health and Human Services; 2014.

2. CDC. National Diabetes Fact Sheet: Atlanta, GA: Department of Human Services, Centers for Disease Control and Prevention; 2011.

• Diabetes affects 29.1 million people

in the US (9.3% of the population)1

• Prevalence of diabetes by age

group1:

– ≥20 years: 28.9 million (12.3%)

– ≥65 years: 11.2 million (25.9%)

• Diabetes is the 7th leading cause

of death in the US (2010)1

• Diabetes is the leading cause of

kidney failure, nontraumatic lower-

limb amputations, and new cases of

blindness among adults in the US2

• A major cause of heart disease

and stroke1

72.2%

(21 million)

27.8%

(8.1 million)

3

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Diabetes and Associated pDPN

Are Prevalent1,2

Up to 14.6

million of these

have DPN2

~5.8 million of

these have

pDPN2

~20% of patients

with diabetes

have pDPN2

Up to 50% of

patients with

diabetes have DPN2

DPN = diabetic peripheral neuropathy

pDPN = painful diabetic peripheral neuropathy

1. Centers for Disease Control and Prevention. National Diabetes Statistics Report: Estimates of Diabetes and Its Burden in the United States, 2014. Atlanta, GA: U.S. Department of Health and

Human Services; 2014.

2. Tesfaye S, et al. Diabetes Metab Res Rev. 2012;28(suppl 1):S8-S14. 4

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Scope of the Problem

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The Diabetic Foot1

1. Clinical Practice Guideline Diabetes Panel of the American College of Foot and Ankle Surgeons. J Foot Ankle Surg. 2006;45(suppl 5):S1-S66.

• One of the most common complications of diabetes in the lower extremity is the diabetic foot ulcer

– An estimated 15% of patients with diabetes will develop a lower extremity ulcer

– 7% to 20% of patients with foot ulcers will subsequently require amputation

– Foot ulceration is the precursor to approximately 85% of lower extremity amputations (LEAs) in people with diabetes

• Diabetes is the main initiating factor for foot ulceration and the most common cause of nontraumatic LEA in the Western world

– Approximately 45% to 60% of all diabetic ulcerations are purely neuropathic

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The Diabetic Foot

• Patients who have chronic neuropathic pain associated with DPN are also at risk for foot ulcers and subsequent infections1

• Ritzwoller and colleagues demonstrated a higher prevalence of limb complications in pDPN patients compared to matched diabetes controls2: – >2 times as many limb infections (P<.001)

– A nearly 10-fold increase in limb amputations (P<.001)

• The annual cost of foot ulcer care in the US is estimated at $5457 per patient (total annual cost = $5 billion)3

• Direct and indirect costs of LEA range from $20,000 to $40,000 per event3

1. Hartsfield CL, et al. Popul Health Manag. 2008;11(6):317-328.

2. Ritzwoller DP, et al. Curr Med Res Opin. 2009;25(6):1319-1328.

3. Clinical Practice Guideline Diabetes Panel of the American College of Foot and Ankle Surgeons. J Foot Ankle Surg. 2006;45(suppl 5):S1-S66.7

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pDPN Impacts Physical and

Mental Health Status1

0

10

20

30

40

50

60

PhysicalFunctioning

RolePhysical

Bodily Pain GeneralHealth

Vitality SocialFunctioning

RoleEmotional

MentalHealth

Me

an

Sc

ore

General US Population Patients with Diabetes pDPN Patients

SF-12v2 = Short Form Version 2 health form. Higher scores correlate to better health status.

SF-12v2 Scores for Study Subjects and Normative Groups (N=255)

1. Gore M, et al. J Pain Symptom Manage. 2005;30(4):374-385.8

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Relationship Between Pain Severity and Impact of

pDPN on Daily Function1

1. Sadosky A, et al. Patient. 2014;7:107-114.9

42%

26%

12%

34%

20%16%

57%

50%

28%

52%

42% 42%

82%84%

49%

79%

70% 69%

0

10

20

30

40

50

60

70

80

90

100

Sleep Walk Drive Exercise Work Perform DailyActivities

Pe

rce

nt

“A

Lo

t” o

r “S

om

ew

ha

t” A

ffe

cte

d

Mild Pain (n = 50) Moderate Pain (n = 149) Severe Pain (n = 194)

*

*

*

* *

† †

† †

*P ≤ 0.05 versus mild; †P ≤ 0.05 versus mild and moderate. FM-LYR-0022 - 1-0Approved

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Impact of pDPN on Annual

Health Care Costs1

+$7238

+$6246

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

Medstat Data IMS Data

Patients with pDPN were selected from 2 different administrative databases of health care claims and matched to control subjects with a diagnosis of diabetes but no pDPN.

Multivariate regression analyses were used to estimate the differences in health care costs between cases and control subjects.

Annual health care costs for patients with pDPN

were up to $7200 higher when compared to patients

with diabetes but no pDPN

Excess H

ealt

h C

are

Co

sts

Att

rib

uta

ble

to

pD

PN

1. Dworkin RH, et al. J Pain. 2010;11(4)360-368.10

$

$

$

$

$

$

$

$

$

$

$

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Economic Burden of pDPN Increases With

Greater Pain Severity1

111. Sadosky A, et al. Diabetes Metab Syndr Obes. 2013; 6:79-92.

* Average annualized total direct cost per pDPN subject was significantly different by pain severity (P <0.0001). Direct costs include physician visits, other

healthcare provider visits, prescription medications, TENS device, outpatient tests/procedures, emergency room visits, hospital outpatient visits,

hospitalizations, direct medical costs to subjects, and direct non-medical (child care, help with house and/or yard work, and help with activities of daily living)

due to pDPN

** Average annualized total indirect cost per pDPN subject was significantly different by pain severity (P = 0.0003). Total indirect costs include overall work

impairment, activity impairment, disability, unemployment, early retirement, and reduced work schedule due to pDPN

• Scores on the BPI Pain Severity Index were used to classify average pain severity as mild, moderate, or severe.

$4,841 $4,960 $4,853 $4,887

$9,730

$3,077

$8,916

$16,196

$0

$5,000

$10,000

$15,000

$20,000

$25,000

Overall Mild Moderate Severe

Total Direct Costs*

Total Indirect Costs**

Total Cost

$14,571

Total Cost

$8,037

Total Cost

$13,769

Total Cost

$21,083

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Overview of pDPN

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Page 13: Assessment of Painful Diabetic Peripheral Neuropathy (pDPN) · DPN = diabetic peripheral neuropathy pDPN = painful diabetic peripheral neuropathy 1. Centers for Disease Control and

Diabetic Peripheral Neuropathy

1. Tesfaye S, et al. Diabetes Care. 2010;33(10):2285-2293.

2. Boulton AJ, et al. Diabetes Care. 2004;27(6):1458-1486.

• A symmetrical, length-dependent sensorimotor

polyneuropathy attributable to metabolic and microvessel

alterations as a result of chronic hyperglycemia exposure

and cardiovascular risk covariates1

• The most common presentation of neuropathy in diabetes2

• Insidious in onset2

• Up to half of patients may be asymptomatic, with the

diagnosis made during a routine neurological exam or

when the patient presents with a painless foot ulcer2

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Pathophysiology of DPN

• Small fibers (Aδ and C)1,2

– Pain and hyperalgesia (first)

– Loss of sensitivity (later on)

– Autonomic symptoms

– Electrophysiology may not detect nerve

damage

• Large fibers (Aα/β)1,3

– Sensory and/or motor nerves

– Loss of vibration perception and

proprioception

– Wasting of small muscles in hands/feet

– Abnormalities readily detected by

electromyography

• Result of sensory nerve damage2

• Sock-and-glove distribution very common1

• Both small and large fibers can be

affected1

1. Vinik A, et al. Nat Clin Pract Endocrinol Metab. 2006;2(5):269-281.

2. Guastella V, et al. Diabetes Metab. 2009;35(1):12-19.

3. Boulton AJ, et al. Diabetes Care. 2004;27(6):1458-1486.14

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Pathophysiology of DPN

• Small fibers (Aδ and C)1,2

– Pain and hyperalgesia (first)

– Loss of sensitivity (later on)

– Autonomic symptoms

– Electrophysiology may not detect nerve

damage

• Large fibers (Aα/β)1,3

– Sensory and/or motor nerves

– Loss of vibration perception and

proprioception

– Wasting of small muscles in hands/feet

– Abnormalities readily detected by

electromyography

• Result of sensory nerve damage2

• Sock-and-glove distribution very common1

• Both small and large fibers can be

affected1

1. Vinik A, et al. Nat Clin Pract Endocrinol Metab. 2006;2(5):269-281.

2. Guastella V, et al. Diabetes Metab. 2009;35(1):12-19.

3. Boulton AJ, et al. Diabetes Care. 2004;27(6):1458-1486.

It is not known why some patients experience

neuropathic pain and others, with similar nerve

lesions, do not2

15

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Duration of Diabetes and Poor

Glycemic Control Increase Risk for DPN

SD = standard deviation

Prevalence of DPN is related to

glycemic control2Severity of DPN correlates with

duration of diabetes1

17%

24%

29%

41%

0

10

20

30

40

50

< 7 7-8 8.1-9.5 >9.6

Pre

va

len

ce

of

DP

N (

%)

A1C (%)(Adjusted for Duration of Diabetes)

10.3(±7.7)

10.1(±8.1)

12.4(±8.4)

13.3(±8.2)

15.6(±9.7)

0

2

4

6

8

10

12

14

16

18

20

22

24

26

0 B 1 2 3

Du

rati

on

of

Dia

be

tes (

Ye

ars

±S

D)

Severity of Diabetic Neuropathy

1. Fedele D, et al. Diabetes Care. 1997;20(5):836-843.

2. Tesfaye S, et al. Curr Diab Rep. 2009;9(6):432-434.16

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Duration of Diabetes and Poor

Glycemic Control Increase Risk for DPN

SD = standard deviation

Prevalence of DPN is related to

glycemic control2Severity of DPN correlates with

duration of diabetes1

17%

24%

29%

41%

0

10

20

30

40

50

< 7 7-8 8.1-9.5 >9.6

Pre

va

len

ce

of

DP

N (

%)

A1C (%)(Adjusted for Duration of Diabetes)

10.3(±7.7)

10.1(±8.1)

12.4(±8.4)

13.3(±8.2)

15.6(±9.7)

0

2

4

6

8

10

12

14

16

18

20

22

24

26

0 B 1 2 3

Du

rati

on

of

Dia

be

tes (

Ye

ars

±S

D)

Severity of Diabetic Neuropathy

1. Fedele D, et al. Diabetes Care. 1997;20(5):836-843.

2. Tesfaye S, et al. Curr Diab Rep. 2009;9(6):432-434.

Although poor glycemic control is a risk factor for

pDPN, patients who have good glycemic control

are still at risk for developing pDPN2

17

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Odds Ratios for Key Risk Factors

for Development of DPN1

1.21 1.27

1.38

1.41.48

1.57

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Triglycerides BMI History ofSmoking

Duration HemoglobinA1C

Hypertension

1. Tesfaye S, et al. N Engl J Med. 2005;352(4):341-350.18

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Clinical Presentation pDPN

– Burning

– Sharp pain

– Electric shocks

– Shooting

– Stabbing

– Deep aching

– Numbness

– Prickling

– Tingling

– Pins and needles

– Allodynia

– Hyperalgesia

• Up to 50% of patients with DPN experience painful symptoms1-4

1. Boulton AJ, et al. Diabetes Care. 2005;28(4):956-962.

2. Boulton AJ, et al. Diabetes Care. 2004;27(6):1458-1486.

3. Tesfaye S, et al. Diabetes Care. 2010;33(10):2285-2293.

4. Argoff CE, et al. Mayo Clin Proc. 2006;81(suppl 4):S3-S11.19

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Clinical Presentation of pDPN1

• First affects the feet and lower limbs, with the hands

affected later

• Symptoms occur symmetrically in a “stocking and glove”

pattern

• Symptoms tend to be worse at night

• Pain may be constant or intermittent

• Patients often find it difficult to describe the

symptoms, which may differ from the pain they've

previously experienced

1. Argoff CE, et al. Mayo Clin Proc. 2006;81(suppl 4):S3-S11.20

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Clinical Presentation of pDPN

• The majority of patients report their pain as moderate

or severe1,2

• Limited data on the natural history of pDPN3

– Some studies report no appreciable occurrence of remission

or improvement in pain severity over time

– Other studies suggest painful symptoms may improve with

the worsening of sensory loss

• There is no correlation between the intensity of pain

symptoms and the severity of sensory loss4

1. Davies M, et al. Diabetes Care. 2006;29(7):1518-1522.

2. Gore M. J Pain Symptom Manage. 2005;30(4):374-385.

3. Tesfaye S, et al. Diabetes Care. 2010;33(10):2285-2293.

4. Daousi C, et al. Diabet Med. 2006;23(9):1021-1024.21

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The Comprehensive

Foot Exam

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ADA Standards of Medical Care in Diabetes:

Foot Evaluation and Screening for DPN1

• All patients should be assessed

annually for DPN using medical

history and simple clinical tests:‒ Patients with type 1 diabetes for five

or more years

‒ All patients with type 2 diabetes

• Perform a comprehensive foot

evaluation each year to identify risk

factors for ulcers and amputations

• Patients with a history of ulcers or

amputations, foot deformities,

insensate feet, and peripheral arterial

disease should have their feet

examined at every visit

1. American Diabetes Association. Diabetes Care. 2016;39(suppl 1):S72-S80.23

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Key Components of the Foot Exam1

1. Boulton AJ, et al. Diabetes Care. 2008;31(8):1679-1685.

• Patient History

– Includes assessment for neuropathic pain symptoms

• General Inspection

– Dermatologic

– Musculoskeletal

• Vascular Assessment

• Neurological Assessment

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Past History

• Ulceration

• Amputation

• Charcot foot

• Angioplasty or Vascular surgery

• Cigarette smoking

• Foot care practices

Patient History1,2

Neuropathic symptoms

• Positive (eg, burning or

shooting pain, electrical or

sharp sensations etc.)

• Negative (eg, numbness, feet

feel dead)

Other Diabetic Complications

• Renal disease (dialysis)

• Retinopathy (visual impairment)

• Claudication

• Leg fatigue

• Rest pain

• Decreased walking speed

• Nonhealing ulcer

1. Boulton AJ, et al. Diabetes Care. 2008;31(8):1679-1685.

2. American Diabetes Association. Diabetes Care. 2016;39(suppl 1):S72-S80.

Vascular Symptoms

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General Inspection1

1. Boulton AJ, et al. Diabetes Care. 2008;31(8):1679-1685.

• Careful inspection of skin integrity and musculoskeletal deformities

performed in a well-lit room with shoes and socks removed

• Inappropriate footwear and foot deformities are common

contributory factors in the development of foot ulceration

– Inspect the shoes. “Are these shoes appropriate for these feet?”

• Dermatologic

– Skin status: color, thickness, dryness, cracking

– Sweating

– Infection: check between toes for fungal infection

– Ulceration

– Calluses (particularly with hemorrhage), blistering, abnormal erythema

• Musculoskeletal

– Deformity (eg, claw toes, prominent metatarsal heads, Charcot foot)

– Muscle wasting (guttering between metatarsals)

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Vascular Assessment1,2

• Peripheral arterial disease (PAD) is a component cause in

approximately 1/3 of foot ulcers and is often a significant risk

factor associated with recurrent wounds

• Assessment of PAD is important in defining overall lower extremity

risk status

• Assess for symptoms of vascular disease: claudication, rest pain,

leg fatigue, decreased walking speed, nonhealing ulcers

• Vascular examination should include:

– Palpation of the posterior tibial and dorsalis pedis pulses

– Ankle-brachial index testing in patients with signs or symptoms of PAD

271. Boulton AJ, et al. Diabetes Care. 2008;31(8):1679-1685.

2. American Diabetes Association. Diabetes Care. 2016;39(suppl 1):S72-S80.

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Loss of Protective Sensation1

• 5 simple clinical tests available*

• Ideally 2 of these should be

regularly performed during the

screening exam

– Normally the 10-g monofilament

and 1 other test

• One or more abnormal tests

would suggest LOPS

• At least 2 normal tests (and no

abnormal test) would rule out

LOPS

Clinical Tests1

• 10-g monofilament

• Vibration using 128-Hz

tuning fork

• Pinprick sensation

• Ankle reflexes

• Vibration Perception

Threshold (VPT)

Neurological Assessment

* Temperature sensation included as a testing option in the Standards of Medical Care in Diabetes – 2016. The testing

procedure was not specified.2

1. Boulton AJ, et al. Diabetes Care. 2008;31(8):1679-1685.

2. American Diabetes Association. Diabetes Care. 2016;39(suppl 1):S72-S80.28

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ADA Risk Classification Based on the

Comprehensive Foot Exam1

Risk

CategoryDefinition Treatment Recommendations Suggested Follow-up

0No LOPS, no PAD,

no deformity

• Patient education including advice on

appropriate footwear

Annually (by generalist

and/or specialist)

1 LOPS deformity

• Consider prescriptive or

accommodative footwear

• Consider prophylactic surgery if

deformity is not able to be safely

accommodated in shoes. Continue

patient education

Every 3–6 months (by

generalist or specialist)

2 PAD LOPS

• Consider prescriptive or

accommodative footwear

• Consider vascular consultation for

combined follow-up

Every 2–3 months (by

specialist)

3History of ulcer or

amputation

• Same as category 1

• Consider vascular consultation for

combined follow-up if PAD present

Every 1–2 months (by

specialist)

1. Boulton AJ, et al. Diabetes Care. 2008;31(8):1679-1685.29

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American Society of Pain Educators Consensus

Guidelines: Key Elements in the Diagnosis of pDPN1

1. Argoff CE, et al. Mayo Clin Proc. 2006;81(suppl 4):S3-S11.

• Establish presence of neuropathy

– Use validated questionnaires to identify painful symptoms

– Perform neurological assessment (10-g monofilament,

128-Hz tuning fork)

• Assess pain characteristics

– Distal, symmetrical

– Numbness, tingling vs. burning, aching, throbbing pain

– Spontaneous pain (continuous or intermittent) vs stimulus-

evoked pain

• Rule out nondiabetic causes for neuropathy and/or pain

30

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American Society of Pain Educators Consensus

Guidelines: Key Elements in the Diagnosis of pDPN1

1. Argoff CE, et al. Mayo Clin Proc. 2006;81(suppl 4):S3-S11.

• Establish presence of neuropathy

– Use validated questionnaires to identify painful symptoms

– Perform neurological assessment (10-g monofilament,

128-Hz tuning fork)

• Assess pain characteristics

– Distal, symmetrical

– Numbness, tingling vs. burning, aching, throbbing pain

– Spontaneous pain (continuous or intermittent) vs. stimulus-

evoked pain

• Rule out nondiabetic causes for neuropathy and/or pain

There is no correlation between the

intensity of pain symptoms and the severity

of sensory deficit1

31

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Validated Questionnaires to Identify

Neuropathic Pain1-3

• Patients often find it difficult to describe the symptoms of

pDPN as they are different than the pain they have

previously experienced1

• Use of validated questionnaires that can distinguish

neuropathic from non-neuropathic pain is recommended in

routine clinical practice1

• Examples of validated questionnaires1-3:

– ID Pain

– Leeds Assessment of Neuropathic Symptoms and Signs© (LANSS and

S-LANSS)

– Neuropathic Pain Questionnaire© (NPQ and NPQ-SF)

– Neuropathic Pain Diagnostic Questionnaire© (DN4 and DN4-Interview)

1. Argoff CE, et al. Mayo Clin Proc.2006;81(suppl 4):S3-S11.

2. Portenoy R. Curr Med Res Opin. 2006;22(8):1555-1565.

3. Bouhassira D, et al. Pain. 2005;114(1-2):29-36.32

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ID Pain: Patient-Reported Screener1

1. Portenoy. Curr Med Res Opin. 2006;22(8):1555–1565.

• A 6-item validated screening tool that accurately indicates

the presence of a neuropathic component of pain

• Validated using data from 2 independent multicenter study

samples and a statistical and psychometric methodology

informed by expert clinician review

• Self-administered or administered by staff

• Scores range from -1 to 5 with a higher score indicative of

pain that contains a neuropathic component

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ID Pain: Patient-Reported Screener

Neuropathic vs Nociceptive Pain1

A score of 3, 4, or 5 (indicating the likely

presence of a neuropathic component) may

justify a more detailed evaluation

Mark “Yes” to the following items that

describe your pain over the past week and

“No” to the ones that do not.

QuestionScore

Yes No

1. Did the pain feel like pins and needles? 1 0

2. Did the pain feel hot/burning? 1 0

3. Did the pain feel numb? 1 0

4. Did the pain feel like electrical shocks? 1 0

5. Is the pain made worse with the touch of

clothing or bed sheets?1 0

6. Is the pain limited to your joints? -1 0

1. Portenoy. Curr Med Res Opin. 2006;22(8):1555–1565.34

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Electronic Chronic Pain Questions

(eCPQ)*

35

Score: ≥ 3Score: < 3

Consider

Neuropathic Pain

Consider

Nociceptive Pain

“Mostly Yes”Consider

Sensory Hypersensitivity

What was your

average pain over

the last week?

(0–10 NRS Scale)

Thinking of the past week…

How much did pain interfere with your usual activities?

How much did pain interfere with your sleep?

How much did pain interfere with your mood?

(0–10 NRS Scale for each item)

CHRONIC PAIN? PAIN INTENSITY & LOCATION IMPACT ON FUNCTION, SLEEP, & MOOD

No = Exit

Yes

Other information to help diagnose sensory hypersensitivity can be

derived from medical history and other eCPQ questions. It includes:

• Widespread pain from body map image / locations? (Y/N)

• Marked impairment of mood, sleep, and function? (Y/N)

• Medical history of ≥1 other sensory hypersensitivity condition? (Y/N)

PAIN QUALITY & TYPE

Where is your pain?

(Diagram)

Have you had

pain most days in

the past 3 months?

(Y/N)

ID PAIN® Screener

Did the pain feel like pins and needles? (Y/N)

Did the pain feel hot/burning? (Y/N)

Did the pain feel numb? (Y/N)

Did the pain feel like electrical shocks? (Y/N)

Is the pain made worse with the touch of clothing or bed sheets? (Y/N)

Is the pain limited to your joints? (Y/N)

“Sensory Hypersensitivity” or Fibromyalgia-like Pain

Did you have trouble thinking or remembering in the past week?

Were you sensitive to bright lights, loud noises, or smells in the past week?

(0–10 NRS Scale for each item)

*For the purposes of this presentation, the eCPQ questions have been paraphrased.

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Diabetic Foot and Ankle Care,

Peripheral Neuropathy –

Neurological Evaluation (#126)1

Diabetic Foot and Ankle Care,

Ulcer Prevention –

Evaluation of Footwear (#127)1

Diabetes: Foot Exam (#163)2,3

Percentage of patients aged 18-

75 years with diabetes who had

a foot examination during the

measurement period

• Examination through visual, pulse,

and sensory foot exams

(Reportable via EHR only in 2016; Claims/Registry Reporting Method Removed)

Percentage of patients ≥18 years

with a diagnosis of diabetes

mellitus who were evaluated for

proper footwear and sizing

• Foot exam documenting vascular,

neurological, dermatological, and

structural/biomechanical findings;

Foot measured using a standard

device; Footwear counseling based

on risk categorization.

Providers who do not satisfactorily report data on quality measures for covered professional services will

be subject to a 2% negative payment adjustment to Medicare Part B Physician Fee Schedule covered

services beginning in 2015. Program participation during a calendar year will affect payments after two

years (i.e., 2016 program participation will affect 2018 payments).4

Percentage of patients ≥18 years

with a diagnosis of diabetes

mellitus who had a neurological

examination of their lower

extremities within 12 months

• 10-g monofilament plus one of the

following: vibration using 128-Hz

tuning fork, pinprick sensation, ankle

reflexes, or vibration perception

threshold

2016 Diabetes Physician Quality Reporting

System (PQRS) Measures

1. Centers for Medicare and Medicaid Services. 2016 PQRS Individual Claims Registry Measure Specifications. https://www.cms.gov/Medicare/Quality-Initiatives-Patient-Assessment-

Instruments/PQRS/MeasuresCodes.html. Accessed January 19, 2016.

2. Centers for Medicare and Medicaid Services. 2016 PQRS Measures List. https://www.cms.gov/Medicare/Quality-Initiatives-Patient-Assessment-Instruments/PQRS/MeasuresCodes.html.

Accessed January 19, 2016.

3. Centers for Medicare and Medicaid Services. https://www.cms.gov/Regulations-and-Guidance/Legislation/EHRIncentivePrograms/Downloads/EPMeasuresTableMay2015.pdf. Accessed

January 19, 2016.

4. Centers for Medicare and Medicaid Services. Payment Adjustment Information. https://www.cms.gov/Medicare/Quality-Initiatives-Patient-Assessment-Instruments/PQRS/Payment-Adjustment-

Information.html. Accessed January 19, 2016.36

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Clinical Quality Measures (CQMs) for

Meaningful Use

• Beginning in 20141:

– Eligible professionals must report on 9 of the 64 approved CQMs

– Recommended core CQMs are encouraged but not required

– Selected CQMs must cover at least 3 of the National Quality Strategy domains

• EHR Incentive Programs in 2015 through 2017: CQM reporting for both

eligible professionals and hospitals/CAHs remains as previously finalized.2

37

1. Centers for Medicare and Medicaid Services. https://www.cms.gov/Regulations-and-Guidance/Legislation/EHRIncentivePrograms/2014_ClinicalQualityMeasures.html. Accessed January 19, 2016.

2. Centers for Medicare and Medicaid Services. https://www.cms.gov/Regulations-and-Guidance/Legislation/EHRIncentivePrograms/Downloads/2015_EHR2015_2017.pdf. Accessed January 19, 2016.

3. Centers for Medicare and Medicaid Services. https://www.cms.gov/Regulations-and-Guidance/Legislation/EHRIncentivePrograms/Downloads/EPMeasuresTableMay2015.pdf. Accessed January 19, 2016.

Diabetes: Foot Exam (CMS 123v4; NQF #0056)3

DESCRIPTION:

Percentage of patients aged 18–75 years of age with diabetes mellitus who had a foot

exam (visual, pulse, and sensory foot examinations) during the measurement period.

DOMAIN: Clinical Processes/Effectiveness

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Management of pDPN

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ADA Standards of Medical Care in Diabetes:

Foot Care and Treatment for DPN1

• Therapeutic strategies for the relief of

symptoms related to pDPN can potentially

reduce pain and improve quality of life

• Assess and treat patients with a tailored and

stepwise pharmacological strategy with

careful attention to symptom improvement,

medication adherence, and side effects

• Provide general foot self-care education to all

patients with diabetes

• Refer patients who smoke, have LOPS,

structural abnormalities, PAD, or prior lower

extremity complications to foot care

specialists for ongoing preventive care and

lifelong surveillance

• Multidisciplinary approach recommended for

those with foot ulcers and high-risk feet

1. American Diabetes Association. Diabetes Care. 2016;39(suppl 1):S72-S80. 39

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American Society of Pain Educators Consensus

Guidelines: pDPN Treatment Goals1

Goal Recommendation

Primary:

Zero pain

• Be realistic

• Many patients only achieve 30% to 50%

pain reduction

• Aggressive pursuit of maximum relief is

recommended

Secondary:

Restoration or

improvement in

functional measures and

quality of life

• Pain relief may translate to an ability to

return to work or social activities and

improved quality of life and mood

• Hopefully, improved function will follow

pain relief

• If improved function does not follow, take

measures to help patients optimize

function in the presence of residual pain

1. Argoff CE, et al. Mayo Clin Proc. 2006;81(suppl 4):S12-S25.40

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Management of Pain Associated

with pDPN

Neurostimulatory1

Interventional

Regional

Anesthesia1

Pharmacotherapy1

Lifestyle2Psychologic1

Complementary/

Alternative1

Physical

Rehabilitation1

Treatment Approaches

1. Chen H, et al. Mayo Clin Proc. 2004;79(12):1533-1545.

2. Jensen TS, et al. Diabetes Vasc Dis Res. 2006;3(2):108-119.41

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Commonly Prescribed Classes of

Medications for the Management of pDPN1,2

• Anticonvulsants*

• Serotonin-norepinephrine reuptake inhibitors*

• Tricyclic antidepressants

• Opioid analgesics*

• Dermal and topical treatments

*FDA-approved treatment available within these classes.

1. Argoff CE, et al. Mayo Clin Proc. 2006;81(suppl 4):S12-S25.

2. American Diabetes Association. Diabetes Care. 2016;39(suppl 1):S72-S80.42

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American Academy of Neurology Evidence-Based

Guideline: Treatment of pDPN1

• Objective: To develop a scientifically sound and clinically relevant

evidence-based guideline for the treatment of pDPN

• Addresses the efficacy of pharmacologic and nonpharmacologic

treatments to reduce pain and improve physical function and quality of

life in patients with pDPN

• Classified studies according to the AAN classification of evidence

scheme for a therapeutic article. Recommendations were linked to the

strength of evidence

1. Bril V, et al. Neurology. 2011;76:1758-1765.43

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Impact of pDPN on Diabetes Care

• Regular exercise is an important part of the diabetes

management plan1,2:

• “The inclusion of an exercise program or other means of

increasing overall physical activity is critical for optimal

health in individuals with type 2 diabetes”2

– American College of Sports Medicine and American Diabetes Association 2010 Joint

Position Statement on Exercise and Type 2 Diabetes

• pDPN negatively impacts walking ability and mobility3

• Guidelines recommend aerobic exercise (eg, brisk walking)

as part of the diabetes management plan1,2

– Improves blood glucose control

– Reduces cardiovascular risk factors

– Contributes to weight loss

– Improves well-being

1. American Diabetes Association. Diabetes Care. 2016;39(suppl 1):S23-S35.

2. American College of Sports Medicine and the American Diabetes Association. Diabetes Care. 2010;33:e147-e167.

3. Galer BS, et al. Diabetes Res Clin Pract. 2000;47(2):123-128. 44

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Patient Education

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• Control DM

• Check feet every day

• Wash feet every day

• Keep skin soft, smooth,

and dry; smooth corns

and calluses gently

• Trim toenails each week

or when needed

• Wear shoes and socks at

all times

• Protect feet from hot

and cold

• Keep blood flowing to

the feet

• Be active

• Check with your doctor

Management of the Diabetic Foot:

Patient Education1

1. National Diabetes Education Program. http://ndep.nih.gov/media/feet_kit_eng.pdf. Accessed January 19, 2016. 46

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Management of the Diabetic Foot:

Footwear Assessment1

• Examine the inside of the shoes

• Look at the type of footwear

• Look at the fit of the footwear

• Avoid pointed-toe and open-toe shoes, high

heels, thongs and sandals

• Shoes should accommodate any deformities

• Should corrective shoes or inserts be prescribed?

1. National Diabetes Education Program. http://ndep.nih.gov/media/feet_kit_eng.pdf. Accessed January 19, 2016. 47

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Summary

• pDPN is a prevalent chronic complication of diabetes that is associated with significant health and economic burden1

• According to the ADA, an annual comprehensive foot exam and assessment for DPN are standards of medical care for patients with diabetes2

• The American Society of Pain Educators recommends the use of validated questionnaires to identify and assess neuropathic pain in patients with diabetes3

• The ADA recommends both pharmacologic and non pharmacologic therapies to help patients manage and treat symptoms of pDPN2

1. Gore M, et al. J Pain. 2006;12(7):892-900.

2. American Diabetes Association. Diabetes Care. 2016;39(suppl 1):S72-S80.

3. Argoff CE, et al. Mayo Clin Proc. 2006;81(suppl 4):S3-S11. 48

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