SOC 2 & 4: Classification/Dx & medical evaluation Flashcards

1
Q

What is T1DM?

A

Autoimmune destruction of pancreatic B cells –>absolute insulin deficiency

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2
Q

What is T2DM?

A

Progressive loss of pancreatic B-cell insulin secretion usually on background of insulin resistance

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3
Q

What are the specifications for A1c to be able to be used for dx?

A

NGSP certified

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4
Q

In what individuals/dz states should A1c NOT be used?

A

conditions associated w/ RBC turnover:

  • G6PD deficiency
  • sickle cell dz
  • HIV
  • hemodialysis
  • 2nd/3rd trimester pregnancy
  • ESRD
  • blood loss/transfusion
  • erythropoietin therapy
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5
Q

How to verify dx of DM

A
  • 2 abnormal tests- can be same sample or different day
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6
Q

When is confirmation of DM not necessary?

A

BG >200 with s/s of hyperglycemic crisis

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7
Q

What to do if pt is near margin of DM dx?

A
  • re-test in 3-6 months

- tell them s/s to look out for

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8
Q

What % of total DM is T1D?

A

10%

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9
Q

What % of T1D present w/ DKA

A

1/3

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10
Q

Those w/ T1D are at risk for what other autoimmune dz?

A
  • vitiligo
  • myathenia gravis
  • autoimmune hepatitis
  • celiac dx
  • addison’s dz
  • grave’s dz
  • hashimoto thyroiditis
  • pernicious anemia
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11
Q

What is the average age for T1D dx?

A

10-14

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12
Q

Those w/ T1DM are insulin ______

A

sensitive

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13
Q

Typical insulin needs in T1D

A

0.5-1 g/kg/day

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14
Q

How can T1D be distinguished from T2D?

A
  • C-peptide test

- Presence or absence of autoantibodies

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15
Q

S/s of DM

A
polyuria
polydyspia
polyphagia
frequent urination, new bedwetting
unexplained weight loss
Dehydration
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16
Q

What are the most common autoantibodies in T1DM?

A

GAD glutamic acid decarboxylase
IAA insulin autoantibody
ICA islet cell cytoplasmic autoantibody

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17
Q

What did the TEDDY trial establish?

A

About 20% of kids <3 years old with 1 autoantibody later developed T1

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18
Q

What is insulin resistance?

A

Muscle, fat, liver cells are not responding well to insulin, so pancreas makes more insulin. eventually pancreas can’t keep up and glucose isn’t entering cells, blood sugar rises causing hyperglycemia

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19
Q

What is insulin deficiency

A

insulin producing B-cells are damaged or destroyed and stop producing insulin

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20
Q

What meds may be associated w/ DKA in T2DM

A

atypical antipsychotics
SGLT2-i
corticosteroids

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21
Q

When should an overweight or obese adult be tested for pre-DM or DM?

A
  • if BMI >23 if Asian or >25 otherwise with 1 or more risk factor:
  • 1st degree family member w/ T2DM
  • high risk ethnic group (AA x 2, Native American, Pacific Islander, Latino)
  • Physical inactivity
  • HTN or HTN meds
  • CVD hx
  • HDL <35 or TG >250
    • PCOS
  • ancanthosis nigricans or severe obesity
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22
Q

When should women w/ prior GDM be tested for pre-DM/DM?

A
  • 4-12 weeks PP

- if normal, every 3 years

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23
Q

How often should those w/ pre-DM, IFG, or IGT be tested?

A

Yearly

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24
Q

When should A1c testing start for all even if not overweight/obese?

A

Age 45

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25
Q

What % of people w/ DM in US are undx? What groups are chronically underdx?

A

25%; 50% of Asian Americans and Hispanic Americans

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26
Q

What is the appropriate interval b/w screens?

A

q 3 years

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27
Q

Why is community screening not recommended?

A
  • likely to get people already dx or at low risk

- if someone is + may not have access to follow-up care

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28
Q

What is the ominous octet for t2DM?

A
  • 80% loss of amylin at dx –>low satiety
  • increased renal reabsorption
  • decreased gut hormones GLP-1 and GIP
  • increased lipolysis (free FA in blood –> insulin resistance)
  • muscle insulin resistance
  • liver insulin resistance
  • increased alpa cell secretion of glucagon
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29
Q

Factors associated w/ insulin resistance

A
  • abdominal obesity
  • OSA
  • fatty liver
  • CA
  • acanthosis nigricans
  • sedentary lifestyle
  • genetics
  • history of GDM
  • PCOS
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30
Q

What is acanthosis nigricans?

A

dark, velvety patches of skin where skin rubs together (neck, underarm, elbows)

  • signals high insulin in blood
  • skin tags or dark areas around nose/eyes
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31
Q

What is LADA?

When is it typically dx?

A

Latent Autoimmune Diabetes in Adults

>35 years old

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32
Q

What medical tx of LADA is appropriate?

A

start insulin w/ in 6 months; early insulin associated w/ preserved pancreatic ability to produce insulin

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33
Q

How/when to test for LADA

A
  • GAD
  • If there is:
    - absence of metabolic dz (no HTN, no HLD, no obesity)
    - no improvement w/ oral hypo agents
    - other autoimmune dz
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34
Q

CF associated DM- how to test, when to test, prevalence, when to be concerned with complications

A
  • OGTT
  • Starting @ age 10, yearly
  • 20% of kids, 40-50% adults
  • assess for complications annually starting 5 years after dx
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35
Q

Post-transplant DM- how to test, when to test

A
  • OGTT
  • Test once pt stable on immunosuppressive regimen, no active infection
  • insulin always works
36
Q

What are monogenic DM? How common are they?

A

Rare- <5% of DM cases

Caused by single gene mutation

37
Q

What is MODY?
When is it diagnosed?
What is the effect on insulin production and action?

A
  • Maturity Onset Diabetes of the Young
  • Characterized by hyper before age 25
  • Impaired insulin secretion w/o insulin resistance/obesity
38
Q

What are the most common types and associated tx?

A

GCK- no meds (HYPER is mild)

HNF- 1A, 4A, 1 B- sulfonylureas

39
Q

Who should be tested for MODY?

A
  • children/YA dx in early adulthood whose DM differs from T1 , T2
  • ex: low renal threshold, lower than expected CRP, large increase in OTT (>90)
  • ex: lean, autoantibody -, low HDL, high insulin sensitivity, strong family hx DM
40
Q

Neonatal DM

  • when is it dx?
  • what are top 2 causes?
A
  • dx w/in 1st 6 months of life

- 80-85% are monogenic; insulin gene mutation is second most common cause

41
Q

What is Type 3C DM?
What’s another name for it?
What dz cause it?
What functions are impacted that result in dysglycemia?

A

Pancreatic DM, AKA pancroprivic DM

  • structural and functional loss of glucose normalizing insulin secretion
  • occurs from CF, pancreatitis, pancreatic cancer
  • loss of both insulin and glucagon secretion –> hyper and hypoglycemia
  • larger than expected insulin requirements
42
Q

What is GDM vs. diabetes in pregnancy?

A

Diabetes in pregnancy- dx within first 13 weeks gestation

GDM- dx 24-28 weeks gestation

43
Q

Who should be tested for diabetes in pregnancy?

A

Overweight/obese women with 1+ standard risk factor, can use A1c

44
Q

Women found to have pre-DM following GDM should be offered ____ and ____.

A

Intensive lifestyle intervention and Metformin

45
Q

When to test new mom after GDM? Use what test?

A

4-12 weeks postpartum

75 g OGTT using normal (non-pregnant) criteria

46
Q

What are 2 ways GDM is assessed?

Who endorses what method?

A
  1. 1 step- ADA endorsed

2. 2 Step- NIH endorsed- thought that 1 step would medicalize too many pregnancies

47
Q

What is the dx criteria for step 1 GDM test?

A

Fasting >/= 92
1 H >/= 180
2 H >/= 153

48
Q

What % of pregnancies are GDM?

A

7%

49
Q

What is the medical management of GDM?

A

Many can be managed (80%) with diet/lifestyle. Otherwise, use insulin

50
Q

What test is used as average of glycemia in GDM?

A

Fructosamine 2

2-3 week average glycemia

51
Q

What is the dx criteria for 2 step method GDM?

A
1 step- no fasting required, 50g OGTT test- if >140, proceed on another day to 100g OGTT, need 2 criteria to dx
fasting- >/=95
1 H >/180
2 H >/= 155
3 H >/= 140
52
Q

What % of women are dx with T2DM immediately postpartum?

A

5-10%

53
Q

What % of women are dx with T2DM w/in 5 years of a GDM pregnancy?

A

50%

54
Q

What should happen during initial medical eval for DM?

A
  • confirm dx and classify type
  • assess for complications and co-morbidities
  • assess previous medical tx regimen, risk factor management
  • patient engagement in plan
  • plan for continuing care
55
Q

What is a patient centered way to say non-compliant?

A

ambivalent

chose not to/declines

56
Q

What is a patient centered way to say controlled DM

A

managed

57
Q

What type of language should be used?

A

Person w/ diabetes rather than diabetic

neutral, non-judgmental, factual language

58
Q

What is the goal of patient centered communication?

A
  • shared decision making
  • educated, involved patient
  • assessing numeracy, literacy, barriers
  • elicit patient preferences and beliefs
59
Q

Why are PWD at higher risk for Hep B?

A
  • lower socioeconomic status

- may share needles, glucometers

60
Q

How high is mortality rate of nosocomial bacteremia in PWD?

A

up to 50%

61
Q

What factors impact choice of tx in T2DM?

A
  • access to, cost, availability of meds
  • individualized A1c target
  • side effects of meds
  • risk of hypo, weight gain
  • complexity of regimen (frequency, administration)
  • optimize pt adherence and persistence
62
Q

What are pt key characteristics?

A
lifestyle
co-morbidities (HF, CKD, HF)
HgbA1c, weight
motivation, depression
cultural, socioeconomic
63
Q

How often should patient centered glycemic management cycle in T2DM be undertaken?

A

at least 1-2x/year

64
Q

What are s/s of celiac dz?

A
diarrhea
malabsorption
osteoporosis
abdominal pain
vitamin deficiencies
iron deficiency
65
Q

When should PW T1DM be tested for thyroid dz?

A

soon after dx

66
Q

When should pernicious anemia (B12) be suspected?

A
  • unexplained anemia

- peripheral neuropathy

67
Q

What CA’s are associated w/ DM

A
  • liver, pancreas

- breast, colon, endometrial, bladder

68
Q

Each what % A1c rise is associated w/ lower cognitive function in T2M

A

1%

69
Q

How should tx regimen be changed if pt is cognitively impaired?

A

simplify as much as possible &

minimize risk of hypo

70
Q

Risk factors associated w/ hypo

A
  • use of insulin or insulin secretagogue (sulfonylureas or meglitinides)
  • impaired kidney or liver function
  • long duration of DM
  • frail/older
  • hypo unawareness
  • physical or intellectual disability
  • alcohol use
  • polypharmacy (nonselective B blockers, ARB, ACE)
71
Q

Who should be evaluated for NASH or fibrosis of liver?

A

pre-DM or T2DM w/ elevated ALT or fatty liver on ultrasound

72
Q

What % of PW Hepatitis c have DM?

How does hepatitis C affect glycemia?

A
  • 1/3

- viral proteins, proinflammatory cytokines

73
Q

Who should be considered for islet autotransplantation?

A

Undergoing total pacreatectomy

74
Q

Who is most at risk for age-specific risk factors and why?

A
  • Both genders
  • Both T1 & T2
  • T1- osteoporosis
  • T2- despite higher bone mineral density
75
Q

Which of the 5 senses may be impaired?

A

Hearing loss- both high and low-mid frequency tone loss, due to neuropathy or vascular dz

smell loss

vision

76
Q

Which HIV meds increase risk for DM?
Why is there increased risk?
When to test?

A

PI, NRTi
–> insulin resistance, apoptosis of B-cells
B4 starting tx, when switching tx, 3-6 months after starting tx, then annually

77
Q

Who should have testosterone checked?
How to test?
What is a confounding variable?

A

S/s: Hypogonadism, decreased sex drive,
Erectile dysfunction
Test: using morning testosterone
Variable: obesity

78
Q

What is the prevalence of OSA in DM?

What are the s/s:

A

~20-25%

daytime sleepiness, snoring, witnessed apnea, elevated WC/neck circumference/obesity

79
Q

Why is OSA concerning?

A

High risk for CVD

80
Q

When to test kids/adolescents for pre-DM/T2DM?

A

> /= age 10 or start of puberty + overweight >/=85% or obese >/=95% + at least 1 risk factor:
- 1st degree relative w/ T2DM
- SGA or mom had GDM during their pregnancy
- HTN, HLD, PCOS, acanthosis nigricans (insulin resistance)
- high risk ethnicity (African American, Asian American, Hispanic American,
Native American, Pacific Islander)

81
Q

If kid @ risk for pre-DM/DM is found not to have pre-DM/DM based on testing, when should they be re-tested?

A

q 3 years

82
Q

What % Americans have DM?

What % have it and are not dx?

A

13% (35 million)

20% don’t know they have it

83
Q

What % Americans have pre-DM?

What % don’t know they have it?

A

35% (85 million)

85% don’t know they have it

84
Q

Which 3 ethnic groups have highest prevalence?

A
  • Mexicans/Puerto Ricans
  • Indigenous people/Native Americans
  • Asian Indian/Phillipino
85
Q

How does education impact prevalence of DM?

A

7.5% >HS
10% HS
13%

86
Q

What % pancreatic function associated w/ pre-DM vs. DM?

A

pre-DM- 50%

DM- 20%

87
Q

Each % pt for A1c = BG?

A

1% = 29 points