Diabetes Mellitus Flashcards
(208 cards)
What is Type 1 diabetes?
Deficiency of insulin SECRETION
Absolute lack of secretion
What is Type 2 diabetes?
Combo of insulin RESISTANCE and inadequate SECRETION to compensate for the resistance
Relative insulin deficiency
What is Prediabetes?
Impaired fasting glucose
impaired glucose tolerance
Highest incidence of diabetes is in the…
American Indian/Alaska native population
There is a strong genetic component in…
Diabetes Type 1
Obesity and visceral abdominal fat is a risk factor for…
Type 2 diabetes
Type 2 diabetes causes…
Accelerated gastric emptying
Excess hepatic glucose production
Defective uptake of glucose in the muscles
Defective insulin secretion
Clinical manifestations of type 1 diabetes…
Polyuria Polydipsia Polyphagia Blurred Vision Weight loss Muscle catabolism Paresthesia DKA typically is their presenting factor
Clinical manifestations of type 2 diabetes…
Initially asymptomatic polyuria polydipsia polyphasic skin infections pruritus Vaginitis (fungal) Overweight/obese acanthuses nigricans- dark spots in skin folds HHNK- rare presenting factor
Polysdipsia, polyuria is caused by…
osmotic diuresis secondary to hyperglycemia and dumping of glucose in the urine
Screening for type 2 diabetes. Consider testing (2018 recommendations)...
- Informal assessment of risk factors in all patients
- In asymptomatic adults with BMI > 25
- Asian americans with BMI > 23 who have 1 or more additional DM risk factors
- Yearly testing of pre diabetes patients, if normal then test every 3 years
- ALL patients over the age of 45
Screening for type 2 diabetes diagnostics should include…
- Fasting Plasma Glucose
- 2 hour plasma glucose
- Hemoglobin A1C
Who should be screened for type 2 diabetes?
A1C > 5.7% First degree relative with diabetes High risk race/ethnicity (AA, Latino, Native American, Asian, Pacific islander) Women diagnosed with gestational diabetes History of CVD HTN HDL Women with PCOS Physical inactivity Severe obesity
Diagnostic criteria for Type 2 diabetes…
Plasma glucose > 126 on more than one occasion after 8 hour fast
> 200 random glucose
Fasting BG 100-125 - proceed to oral glucose tolerance test
OGTT 2 hour value of > 140-199 (IGT)
OGTT > 200
HbA1C > 6.5 - gold standard for diagnosis
How to perform an oral glucose tolerance test…
Drink 75 mg glucose in 300 cc H2O within 5 minutes
Perform in the AM
No smoking or activity during the test
Obtain samples 0-120 minutes
The gold standard for diagnosis of type 2 diabetes is…
HbA1c
HbA1C is not accurate in…
pregnancy increased red blood cell turnover sickle cell disease hemodialysis recent blood loss or transfusion Epo therapy
Pre-diabetes diagnostic values…
FPG 100-125
2 hour glucose (140-199)
HbA1C 5.7-6.4
Implement lifestyle changes
Additional labs needed in patients with pre-diabetes or diabetes
Fasting lipid LFT Urinary albumin-creatinine ration creatinine, GFR TSH Microalbuminuria ECG Urinalysis (ketone, protein, sediment)
High TSH
Decreased TSH
Decreased insulin production and utilization
High insulin production and utilization
Higher incidence of thyroid disfunction in patients with diabetes.
The preferred initial pharmacologic agent for Type 2 DM is…
Metformin
Monitor Vitamin B 12 periodically
Consider insulin if for initial managment of type 2 DM if…
symptomatic
elevated BG levels > 300
HbA1c > 10
Start a second oral agent, a GLP-1 receptor agonist or basal insulin if…
non insulin mono therapy is at the maximal tolerated dose and does not achieve or maintain the A1C target over 3 months.
Treatment of patients with T2DM and ASCVD should be..
lifestyle management
metformin
then subsequently incorporate an agent proven to reduce major adverse CV events such as: empagliflozin and liraglutide
Can also consider canagliflozin