Pharmacotherapy of Oral Diabetes Medications Exam 2 Flashcards
What is the role of self-monitoring blood glucose (SMBG)?
- Assessment of current glycemic status
- Confirms hypo- or hyperglycemia symptoms
- Assessment of current therapy
- Assessment of impact of intervention on glycemic control
- Evaluation for trends in control
- Quicker feedback than A1c
- Identification of asymptomatic hypoglycemia
- Identify A1c mismatch with perceived glycemic control
- Evaluation of food and other factors on glycemia
What would be a reason to set an alternate A1c goal from normal?
- High risk for hypoglycemia
- High risk of complication if hypoglycemia occurs: Fall risk, hypo unawareness, etc.
- Barriers to drug therapy required for optimal control
- Lower risk for chronic complications (short life expectancy)
- Elderly
Biguanide PK
- decreases hepatic glucose production
- insulin sensitization in muscle and fat
Biguanide use
Should always be used in type 2 unless there is a C/I
Metformin dosing
most people don’t get a clinical response over 2000mg per day
Metformin renal dosing
- eGFR ≥45 – 59: Monitor renal function every 3-6 months
- eGFR ≥30-44: Use caution, consider 50% dose reduction, no new therapy
- eGFR <30: Use C/I
Biguanide ADE
- Diarrhea
* Decreased B12
What are risk factors for lactic acidosis? (not underlined; FYI)
- acute CHF
- dehydration
- excessive alcohol intake
- hepatic or renal impairment
- sepsis
- note: stop 48 hrs prior to imaging proc; contrast dye can put pt in acute kidney injury which would also increase risk of lactic acidosis
Biguanide monitoring parameters
- Renal function
* B12
Biguanide pearls
- Start low dose and titrate up
- CVD events UKPDS
- Can improve lipid profile
Sulfonylurea PK
increases insulin secretion
Glipizide dosing
- for the BID dosing, should tailor medication to what time the problem of the day happens to the pt
Glyburide renal dosing
Not recommended if eGFR<60
Sulfonylurea ADE
- Hypoglycemia
* Weight gain
Sulfonylurea C/I
Sulfa allergy
Sulfonylurea Place in Therapy
- 2nd or 3rd line
- A1c lowering 1-2% when started as monotherapy; not as good when added as adjunct therapy
Sulfonylurea pearls
Glyburide is on the Beer’s List of Drugs to AVOID in elderly
Metglitinides PK
increases insulin secretion (glucose dependent)
Metglitinides dosing
- dosing with meals
- no renal considerations
Metglitinide ADE
- Hypoglycemia
* Weight gain
Metglitinide C/I
Don’t use with
gemfibrozil (decreases metabolism of metglitinide)
Metglitinide Place in Therapy
2nd or 3rd line
Metglitinide Pearls
Skip if patient skips meal
Thiazolidinediones PK
- Max clinical effect not apparent for 6-12 wks
* Increased insulin sensitivity
TZDs Hepatic Considerations
- Pioglitazone: If liver function test (LFT) are >3 x ULN, discontinue therapy. Do not reinitiate therapy if due to drug
- Rosiglitazone: Do not initiate if active liver disease or LFTs >2.5 x ULN
- no renal dosing
TZD ADE
- Peripheral edema / fluid retention
* Elevated LFTs
TZD C/I
- NYHA III or IV heart failure (for initiation of therapy)
* DI: gemfibrozil (decreases TZD metabolism)
TZD Warnings
- Can exacerbate HF at any stage with fluid retention (BBW)
* Hepatotoxicity
TZD Monitoring parameters
- LFT
- Alkaline phosphatase
- Total bilirubin at baseline
TZD Pearls
- Can take up to 12 weeks to see effect
* Pioglitazone preferred over rosiglitazone
GLP-1 PK
- increase insulin secretion
- decrease glucagon secretion (glucose dependent)
- slows gastric emptying
- increases satiety
GLP-1 dosing
there are different dosing frequency anywhere from once daily to once weekly
Exenatide renal dosing
CrCl <30 stop
GLP-1 ADE
GI upset (nausea, vomiting, diarrhea)
GLP-1 C/I
Personal or family history of medullary thyroid carcinoma (BBW) (Except Lixisenatide)
GLP-1 warnings
- Acute pancreatitis
- Gallbladder disease
- Gastroparesis
GLP-1 Place in Therapy
- Patient must be okay with injections
* CVD (Liraglutide) benefits
GLP-1 Pearls
- Promote weight loss
* CV protection
LEADER
- specific to liraglutide
- reduced CV events and CV deaths
- reduced all cause mortality
- FDA added indication: risk reduction of MACE (major adverse CV events) in adults with DMII and established CVD
DDP4 Inhibitor PK
- indirectly increases insulin secretion
- decreases glucagon secretion
- glucose dependent
DDP4 Inhibitor renal dosing
All but Tradjenta
DDP4 Inhibitor ADE
Increased LFT’s
DDP4 Inhibitor Warnings
• Heart failure
(saxagliptin and alogliptin) added April 2016
• Hepatotoxicity
DDP4 Inhibitor Pearls
No weight gain
SGLT-2 Inhibitor PK
blocks glucose reabsorption by the kidney
SGLT-2 Inhibitor renal dosing
just know that they all have renal dosing
SGLT-2 Inhibitor ADE
Urinary tract infections
SGLT-2 Inhibitor C/I
eGFR <30
SGLT-2 Inhibitor Warnings
- Increased risk of bone fractures
- Ketoacidosis
- Bladder cancer (dapagliflozin)
- Lower limb amputations (BBW) (canagliflozin)
- Fournier’s Gangrene
- Pancreatitis
SGLT-2 Inhibitor Pearls (not underlined)
- CV protection (empagliflozin)
- No weight gain
- Pleiotropic effects (decreased BP, decreased uric acid)
EMPA-REG
- specific to empagliflozin
- reduction in: primary endpoint, CV death, all cause mortality, heart failure
- FDA added indication: risk reduction of CV mortality in adults with type 2 and CVD
Alpha Glucosidase Inhibitors PK
slows intestinal CHO digestion / absorption
Alpha Glucosidase Inhibitors dosing
- 25mg TID with meals
- skip if meal is skipped
Alpha Glucosidase Inhibitors ADE
Significant GI upset (increase in gas (74%) due to fermentation of unabsorbed CHO, bloating, diarrhea)
Alpha Glucosidase Inhibitors C/I
- Inflammatory bowel disease
- colonic ulceration
- intestinal obstruction
- malabsorption disorders
Alpha Glucosidase Inhibitors Warnings
- Hepatoxicity
* Renal impairment
Amylin Analogue PK
reduces postprandial elevations by prolonging gastric emptying, suppresses glucagon secretion and produces satiety
Amylin Analogue ADE
- Significant hypoglycemia (BBW)
- Headache
- Nausea
- Anorexia
Amylin Analogue C/I
Gastroparesis
Amylin Analogue Warnings
Hypoglycemia
Amylin Analogue Place in Therapy
Must be okay with injections
Place in Pearls
- Weight loss
* BBW Severe hypoglycemia when co-administered with insulin (decrease mealtime insulin by 50%)
Dopamine-2 Agonist PK
increases insulin sensitivity
Dopamine-2 Agonist dosing
- once daily in the morning
- no renal dosing
Dopamine-2 Agonists ADE
Hypoglycemia
Dopamine-2 Agonists Warnings
CV effects (not expected with Cycloset)
Bile Acid Sequestrant (BAS) PK
- 4-6 weeks onset
* decrease hepatic glucose production and increase incretin levels
Bile Acid Sequestrant (BAS) Warnings
Gastroparesis
Which medications should be used if patient is having trouble with their fasting blood glucose?
- biguanide
- TZD’s
- SU’s
- SGLT-2
- Dopamine agonists
- Bromocriptine
- DPP4 inhibitors
Which medications should be used if patient is having trouble with their post-prandial blood glucose?
- metglitinide
- DPP-4 inhibitors
- GLP-1
- AGi
When should you measure a post-prandial blood glucose?
2 hrs after same meal or before the next meal
initiation of oral therapy
- Lifestyle therapy (diet and exercise) stressed for all patients
- Start metformin and other adjunct therapy if needed
- The rest of the order of adding medication use the step-wise thought process and think about patientcentered factors
- Titrate medications where there is room to titrate
Which drugs has a contraindication for Heart failure?
- TZD
- DPP4 inhibitors
Which drugs has a contraindication for Renal impairment?
metformin
Which drugs has a contraindication for GI Disorders?
- Agi
- GLP1
Which drugs has a contraindication for Bone Fractures?
- SLGT2
- TZD
Which drugs has a contraindication for Hepatotoxicity?
- TZD
- DPP4
- AGi
Which drugs has a contraindication for Thyroid carcinoma?
GLP1
ADA Recommendations in Prediabetes
- Target A1c goal of 5.7-6.4%
- Encourage lifestyle changes: 7% weight loss, increase physical activity (150min/wk)
- Consider metformin if: BMI >35, Age <60, Women with prior GDM
Common Barriers to Monitoring and Control
- Concurrent health conditions
- Life stressors with higher priority
- Inadequate knowledge of why and how
- Inadequate access or cost to meds / supplies / food
- Poor adherence to monitoring, follow up, or meds
- Fear of hypoglycemia, injections, monitoring or discomfort
- World view / life view undervaluing health or future health
- Health professional inertia
Which medications have possible β-cell preservation?
- TZD
- GLP-1
- DPP-4 inhibitors
What are the meds that decrease A1c by < 1%?
- GLP-1
- Dopamine-2 Agonists
- DDP4 Inhibitor
- BAS
- AGi
- Amylin Analogue
- Metglitinide
- SGLT-2 Inhibitor
What are the meds that decrease A1c by > 1%?
- GLP-1
- Dopamine-2 Agonists
- TZD
- Biguanide
- Sulfonylurea