10 - Diabetes Intro Flashcards
When is a second test required to confirm DM or Pre-DM?
Required UNLESS:
Overtly HYPERglycemic = BG > 200
with Symptoms of DM
Test is RandomPG or 2 HR post 75g OGTT
>200 mg/dl
How often do we test
A1C?
Every 3 MONTHS until goal is achieved
every 6 MONTHS if AT GOAL
Max Fasting Glucose level
140 mg/dl
this is the level where Insulin’s Sensitivity PEAKS
Does not respond to the glucose effectively / efficiently
MicroVascular
Complications of DM
-
EYE
-
High BG / BP -> damages blood vessels
- Retinopathy / Cataracts / Glaucoma
-
High BG / BP -> damages blood vessels
-
KIDNEY
-
Damaged small BV’s / Excess BG
- overworks kidney -> Nephropathy
-
Damaged small BV’s / Excess BG
-
NEROPATHY
- HYPERglycemia -> damages nerves in PNS
-
Pain / Numbness
- Feet wounds -> infection -> Gangrene
-
Pain / Numbness
- HYPERglycemia -> damages nerves in PNS
Second Test for PRE-DM
HgBA1C = 5.7% - 6.4%, THEN,
SECOND TEST NEEDED TO CONFIRM PRE-DIABETES
required if BG is NOT >200 (overtly hyperglycemic) with symptoms
then test 2 Hour PPG (post prandial glucose)
140 - 199 (mg/dl)
IGT (impaired glucose tolerance)
First Line therapy for HYPERTENSION?
ACE INHIBITOR** or **ARB
1st line if proteinuria is present
BP > 140/90
CCB + Thiazide Diuretic
BP > 160/100 use 2 agents
High Risk Ethnicities for DM
Native American
African American
Latino
Asian American = Middle eastern counts
Pacific Islander
ADA 2018 Glycemic Goals
A1C
FBG
2hr PPG
A1C = < 7%
FBG = 80-130 mg/dL
2HR PPG = <180 mg/dL
Major Differences between T1DM
vs T2DM
- T1DM
- <30 y/o
- Abrupt Onset
- Lean Body
- no insulin resistance
- Symptomatic
- Auto AB’s present
- little or no Macro/Microvascular complications at diagnosis
- Ketones at Baseline
S/S of DM
- HYPERglycemia:
- PolyURIA / PolyDIPsia / PolyPHAgia
- Top:
- Headache / blurry VISION / Fatigue
- Body:
- Poor wound healing / dry skin / sexual dysfunction
ADA 2018 Diabetes Screening Guidelines
-
Normal Weight / No Risk factors
- screen at age 45, or if GDM History
- test every 3 years
- screen at age 45, or if GDM History
-
PRE-Diabetes
- Test Annually
-
Overweight or Obese w/ 1> Risk Factors
- Prediabetes / 1st degree relative with DM
- High Risk ethnicity / GDM / PCOS
- h/o CVD / HTN
- Inactive lifestyle
- SCREEN
A1C Correlation with Mean Plasma BG
How much A1C by adding avg BG?
INCREASE A1C by 1%
then add
~30mg/dL to PPG
Ex- 6->7% A1C ——> 150->180mg/dL PPG
Diagnosis for Diabetes
HgbA1C? FPG?
HgbA1c = > 6.5% or
FPG = > 126 (mg/dl) - IFG (impaired fasting glucose)
SECOND TEST NEEDED TO CONFIRM DIABETES
required if BG is NOT >200 (overtly hyperglycemic) with symptoms
then test RPG or 2 Hour post 75mg OGTT (oral glucose tolerance test)
_>_200 (mg/dl) IGT
2013 ACC/AHA Cholesterol Guideline
ASCVD Risk Reduction Trial
-
DM - Aged 40-70
- w/ LDL between 70-189 mg/dl
- 10 year ASCVD risk of 7.5%
- w/ moderate intensity statin
-
10 yr ASCVD risk of > 7.5%
- w/ HIGH intensity statin
- 10 year ASCVD risk of 7.5%
- w/ LDL between 70-189 mg/dl
When to initiate HYPERTENSION medication?
BP > 140 / 90
Ace inhibitor or ARB
1st line if proteinuria is present
CCB / Thiazide Diuretic
Use 2 BP agents if BP >160/100
Second Test for DM
SECOND TEST NEEDED TO CONFIRM DIABETES
required if BG is NOT >200 (overtly hyperglycemic) with symptoms
then test RPG or
2hr post 75g OGTT
> 200 (mg/dl)
Antiplatelet Therapy
ASA 81mg QD
in women & men >50 yrs with
diabetes + 1 major risk factor
ASCVD / HT / Dyslipidemia / Smoking / CKD
not at increased risk of bleeding
Preventative Care / health maintenance
QUIT SMOKING / overdrinking
Dilated Eye Exam
Foot Exam
Dental Exam
Family planning for pregnant women
Pathophysiology of T1DM
- Genetic Predisposition (from birth)
-
Immunologic Abnormalities (onset is later)
- At some point there is a TRIGGER
- -> that leads to the Destruction of B-Cell Mass
- At some point there is a TRIGGER
- Dies gradually over time
-
Honeymoon Period
- Period where B-cell mass APPEARS to regenerate
- but ultimately still dies.
- Period where B-cell mass APPEARS to regenerate
A1C Goal of <8%
Is for what Patient Specific Group?
ELDERLY
H/O of hypoGlycemia or hypoGlycemia unawareness
long disease duration
short life expectance
CVD
poor support system
Pathophysiology of T2DM
“Omnious OCTET”
- Decreased Insulin Secretion
- Decreased Inretin Effect
- Decreased Glucose Uptake
- NT Dysfunction
- Increased Lypolysis
- Increased Glucose Reabsproption
- Increased Hepatic Glucose Production
- Increased Glucagon Secretion
DM Screening for <18 years old
Overweight + _>_1 risk factor –> SCREEN FOR DIABETES
- Overweight =
- >85th percentile for age and sex
- weight for height
- OR weight >120% of ideal for height
- >85th percentile for age and sex
- Risk factors:
- MATERNAL HISTORY of DM or GDM (during child’s gestation)
- F/H of T2DM in 1st or 2nd degree relative
- Other insulin resistance conditions
- HIGH RISK ETHNICITY
Risk Factors
ADA 2018
Overweight / Obese + 1> Risk factor –> SCREEN FOR DIABETES
- 1st degree relative with DM
- PCOS / GDM (gestational) / HTN
- Physically Inactive / Insulin Resistance
- H/o CVD
-
low HDL
- (< 35mg/dl )
- HIGH TG
- ( > 250mg/dl )
Pathophysiology of T2DM
“Egregious Eleven”
By the time diabetes is Diagnosed, 80% of B-cell fxn is LOST
- Addition to the 8:
-
Abnormal Microbiota
- **possible decreased **GLP1 secretion
-
BRAIN
- increased appitite
- decreased morning dopamine surge
- Immune Dysregulation / Inflammation
-
Abnormal Microbiota
Diagnosis for Pre-Diabetes
HgbA1C? FPG?
HgbA1c = 5.7 - 6.4 % or
FPG = 100 - 125 (mg/dl) - IFG (impaired fasting glucose)
SECOND TEST NEEDED TO CONFIRM PRE-DIABETES
required if BG is NOT >200 (overtly hyperglycemic) with symptoms
then test 2 Hour PPG (post prandial glucose)
140 - 199 (mg/dl) IGT
MACROVascular
Complications of DM
-
BRAIN
- Increased risk of Stroke / CVD
- Transient Ischemic Attack / Cognitive Impairment
- Increased risk of Stroke / CVD
-
HEART
-
High BP & Insulin Resistance ->
- increase risk of CAD
-
High BP & Insulin Resistance ->
-
EXTREMETIES
-
Narrowing of BV -> increase risk for reduced or lack of blood flow to legs
- -> Gangrene / Poor Wound Healing
-
Narrowing of BV -> increase risk for reduced or lack of blood flow to legs
HgbA1c Lab Test
- Measure of glucose that is bound to HgB in RBC
- over the previous 2-3 months
-
MEAN VALUE
- does not show DAY to DAY fluctuations
- FASTING NOT REQUIRED