Diabetes Mellitus Flashcards
Leading cause of ESRD?
DM
What two types of Abs in T1DM?
GAD-65 and islet cell Abs
2 etiologies of T1DM?
autoimmune, idiopathic
describe the rate of beta cell destruction in T1DM…
variable, marked decline after immunologic trigger
Insulin resistance in T2DM has what effect on liver glucose?
increased output
Abnormal fat metabolism (increased lipolysis) in T2DM leads to what two conditions?
dyslipidemia (increased LDL/TGs)
FLD/NASH
Pre-diabetes is defined as…
insulin insensitivity with impaired glucose tolerance
Describe the 4 steps of progression in T2DM…
peripheral insulin resistance
IGT
overt T2DM (fasting hyperglycemia)
Beta cell failure
The following are indications of what condition?
elevated post-prandial glucose
decreased insulin secretion
increased hepatic glucose production
impaired glucose tolerance
When should intervention be made in the progression of T2DM
IGT
The below presentation is suspicious for T1DM or T2DM?
polyuria polydipsia nocturia blurred vision acanthosis nigracans
T2DM
FHx is a powerful predictor of which type of DM?
T2DM
Who should get DM screening?
BMI 25+ and 1+ RF
45+ yo
Women with what two conditions have increased risk for DM?
PCOS, Gestational DM
What three medication classes put patients at higher risk for DM?
GCs
HIV meds
atypical antipsychotics
What CV conditions increase risk for DM?
dyslipidemia (HDL < 25, TGs > 250)
HTN
CVD hx
three tests for DM
FPG
OGTT
HbA1c
Prediabetes and DM for FPG test
pre-DM: 100-125
DM: 126+
Prediabetes and DM for OGTT
Pre-DM: 140-199
DM: 200+
Prediabetes and DM for HbA1c
Pre-DM: 5.7-6.4
DM: 6.5+
as A1c rises, DM risk rises in what fasion?
disproportionate (curvilinear relationship)
How often should prediabetes pts be tested?
at least annually
what medication can be started for pre-DM?
metformin
What are 2 non-medical approaches to pre-DM?
education/prevention
behavioral/lifestyle intervention
Normal DM screen should be retested at minimum of…
3 year intervals
What three vaccinations should be up to date with DM?
HBV
Flu
Pneumococcal
T1DM often coincides with what comorbidity?
autoimmune disorders
7 lab tests for DM…
HbA1c lipids LFTs Urinary albumin:Cr BMP B12 TSH
What is the leading cause of morbidity and mortality from DM?
ASCVD (CHD, CVD, PAD)
Other than ASCVD, what is another major cardiovascular cause of morbidity/mortality in DM?
HF
How often should ASCVD risk be calculated w. DM patients?
at least annually
5 treatment strategies for ASCVD and DM…
lifestyle
BP & Lipid control
Anti-Platelet (ASA, plavix)
Three microvascular complications of DM?
Diabetic nephropathy
diabetic retinopathy
diabetic neuropathy
Diabetic nephropathy is related to…when does it develop
chronic hyperglycemia
10 years of T1DM
Albuminuria +/- reduced eGFR…
diabetic kidney disease
Diabetic nephropathy progression…
progressive albuminuria (> 300), HTN, decreased eGFR
What is screening for diabetic nephropathy, and how often should it occur?
urinary albumin:Cr (UACR) + eGFR
at least annually
2-3 abnormal specimens of UACR collected between 3-6 weeks indicates…
diabetic nephropathy
When should diabetic nephropathy screening begin w. T1DM and T2DM
T1DM: 5+ years into dz
T2DM: at time of dx
What can be used to tx diabetic nephropathy
ACE/ARBs
What is the leading cause of new blindness between 20-74 yo?
diabetic retinopathy
The prevalence of diabetic retinopathy is related to what 2 factors?
duration od DM and glycemic control
diabetic nephropahty often occurs with…
other microvascular conditions
What three non-DM factors increase the risk of retinopathy
nephropathy
HTN
dyslipidemia
Which type of diabetic retinopathy?
hemorrhage
yellow exudate
cotton wool spots
non-proliferative
Which type of diabetic retinopathy?
neovascularization at disc
proliferative
When do diabetic retinopathy sxs typically develop?
very late stages
When should screening for diabetic retinopathy occur in T1DM and T2DM?
Exam includes dilated, comprehensive exam
T1DM: w/in 5 years of dx
T2DM: at dx
If there is no evidence of retinopathy for one or more eye exams AND well controlled glycemia, when can retinopathy screening occur?
q 1-2 yers
If any level of diabetic retinopathy is present, when should screening occur?
annually
Two types of diabetic neuropathy…
peripheral, autonomic
A patient presents with the below, which is concerning for…
distal, symmetric polyneuropathy
stocking-glove sensory loss
loss of protective sensation/foot ulcers
loss of vibratory sensation
diabetic peripheral neuropathy
What complication of DPN is a major cause of morbidity and mortality?
foot ulcer
Comprehensive foot evaluation should occur at least annually, and should begin when for T1DM and T2DM?
T1DM: w/in 5 yrs of Dx
T2DM: at dx
Comprehensive foot exam includes history, INSPECTION, vascular testing and neuro exam.
What is included in vascular?
palpation of DP and PT pulses
ABI
Comprehensive foot exam includes history, INSPECTION, vascular testing and neuro exam.
What is included in neuro exam?
monofilament testing +
pinprick, temp, vibratory, ankle reflex
The below are S/S for what DM assoc. condition?
hypoglycemia unawareness
gastroparesis
sexual/bladder dysfunction
abn. pupillary response
autonomic neuropathy
The below medications can decrease what comorbidity w. DM?
empagliflozin/canagliflozin
dulaglutide/semaglutide/liraglutide
ASCVD
DM + ASCVD are indications for what 2 cardioprotective drugs?
high-intensity statin
ASA
The below are contraindications for…
CKD
Hepatic Dz
Acute/unstable HF
acidosis
metformin
Which drug can cause GI Sfx and deplete b12?
metformin
What 4 things should be monitored with metformin administration?
GFR
CBC (b12 concerns)
LFTs
B12
What drug class?
pioglitazone
rosiglitazone
increase insulin sensitivity
TZDs
when should TZDs be considered?
price an issue
Early DM + high insulin resistance
3 common reactions to TZDs
edema, fluid retention, weight gain
osteoporosis/fx in women
Black box warning for TZDs
CHF
active bladder cancer means which TZD should be avoided?
pioglitazone
Which drug class?
glimepiride, glipizide, glyburide
stimulates beta cell insulin release
sulfonylureas
why should sulfonylureas be considered?
cheap, effective in early stages
3 concerns with sulfonylureas…
low dose if used w. insulin/GLP-1
avoid w. elderly
weight gain
which drug class?
-gliptins
slows breakdown of GLP-1 to restore insulin and glucagon to physiologic levels –> increase insulin release
DPP-4 inhibitors
DPP-4 inhibitors have what effect on HbA1c
modest decrease
two adverse effects with DPP-4 inhibitors…
peripheral edema
pancreatitis
Which DPP-4 inhibitor is excreted in feces, and therefore can be used with renal impairment?
linagliptin
Which Class?
-Glutides
activates GLP-1 to have the following effects:
increased insulin
decreased glucagon
slow gastric emptying
increase beta cells
GLP-1 agonists
What is the route for GLP-1 agonists?
IM ,weekly prep available
black box warning for GLP-1 agonists…
Thyroid tumor if FHx or MEN2
C/Is for GLP-1 agonists…
gastroparesis
pancreatitis
Which GLP-1 agonists should be avoided with GFR < 30??
exenatide
Which GLP-1 agonist can be given weekly as depot, meaning may take 6-7 weeks for onset?
exenatide weekly
Which drug class?
-gliflozin
reduce glucose reabsorption and increase urinary secreiton
SGLT-2 inhibitors
SGLT-2 inhibitors are contraindicated when?
GFR < 30 (all)
GFR < 45 (cana, empa)
GFR < 60 (dapa, ertu)
What is a major problem with SGLT-2 inhibitors>
increased amputation risk
FDA warning for SGLT-2 inhibitors for…
DKA
Indications for insulin?
A1C > 10
Glucose 300+
what type of insulin?
effects hours after injection
even action over 24 horus
long-acting
What type of insulin?
effects 2-4 hrs, peak 4-12 hrs
not commonly used
NPH
What type of insulin?
onset w.in 30 mins, peak 2-3 hours, effective for 3-6 hrs
not commonly used
regular/short acting
What type of insulin?
mealtime/correction
onset 15 min, peak w/in 1 hr, effective for 2-4 hours
rapid acting (bolus)
Who can get premixed insulin?
same diet daily
poor adherence to basal-bolus
what is a dangerous consideration for premixed insulin?
high risk hypoglycemia
The below is caused by… what can be added?
fasting glucose normal, elevated A1c
overbasalization
+ mealtime/bolus
What pattern of hyperglycemia is described below?
morning hyperglycemia
response to undetected nocturnal hypoglycemia
common w/ excessive insulin admin
somogyi effect
What pattern of hyperglycemia is described below?
morning hyperglycemia due to elevated AM hormone levels (HGH, Cortisol, Epi)
Dawn phenomenon
What condition of hyperglycemia?
-excess glucacon, catecholamines, cortisol, GH
Hyperglycemia
Ketonemia
Acidemia
Rapid oonset
DKA
4 precipitating events of DKA…
sepsis
skipped dose
sickness
stress (surg)
patient presents with…
dehydration polydipsia/polyphagia NV abd. pain Weight loss
DKA
In DKA glucose is usually…
> 250
What labs for DKA with what results?
UA + glucose/ketone \+ Serum ketones \+ anion gap on BMP \+ Leukocytosis \+ metabolic acidosis (ABGs)
Tx for DKA…
hospitalize
IV fluids
IV insulin
correction of lytes
What is described below?
glucose > 600
osmotic diuresis/dehydration
no acidosis
no ketones
HHS (hyperglycemic hyperosmolar syndrome)
HHS is more common in what population of T2DM?
older
Patient presents with T2DM and…
AMS polyuria polydipsia weakness tachy hypotension dehydration shock
HHS
How is HHS treated?
Hospitalize
IV Fluids
IV Insulin
lyte correction