Diabetes overview Flashcards
metformin/glyburide
glucovance
Actoplus
metformin/pioglitazone; Actos= pioglitazone
Avandamet
metformin/rosiglitazone; rosiglitazone is Avandia
Janumet
metformin/sitagliptin; (sitagliptin is Januvia)
What is the max daily dose of metformin?
2550mg
What is the BB warning with metformin?
lactic acidosis
When is metformin CI?
SCr> 1.5 males SCr > 1.4 females
When should you temporarily d/c metformin?
when using IV contrast
metformin is weight ____
neutral
What are the most common side effects of metformin & how are they mitigated?
diarrhea, nausea, vomiting, flatulence; often goes away take with food
You should not use sulfonylureas with ______ due to _____ or with _____ due to increased risk of hypoglycemia
meglitinides (Starlix and Prandin); similar MOA:
glipizide
Glucotrol
glimepriride
Amaryl
glyburide
dyabeta
What are the primary SEs of sulfonylureas?
hypoglycemia; weight gain
why is glyburide not a recommended agent?
has partially active, renally cleared metabolite; should avoid if CrCl less than 50
name the sulfonylureas
chlorpromamide glipizide glimepiride glyburide
name the meglitinides
repaglinide nateglinide
Starlix
nateglinide
What are the common SEs of meglitinides?
hypoglycemia, mild weight gain, upper respiratory infections
sulfonylureas and meglitinides work by______ and are generally taken
stimulating insulin secretion from the beta cells
Glipizide IR: 30 min b/4 breakfast & dinner or 30 min b/4 1st meal
Glipizide ER: with first meal of the day
Glyburide: daily with 1st meal
If you miss a dose of nateglinide what should you do?
skip dose and take next one
What is the MOA of thiazolidinediones?
peroxisome proliferator activated gamma (PPARgamma) agonists which cause increased peripheral insulin sensitivity
pioglitazone
Actos
rosiglitazone
Avandia
rosiglitazone/glimepiride
Avandaryl
Which antidiabetic class can exacerbate HR?
thiazolidinediones
Which drug has an increased risk of bladder cancer when used beyond 1 year?
pioglitazone
What are some good SEs of pioglitazone?
increases HDL, and decreases TG/total cholesterol
What are the SEs of the TZD clasS?
peripheral edema, weight gain, URTIs
alpha glucosidase inhibitors do what?
inhibit the enzyme found int he intestine that hydrolyzes carbs to glucose, therfore minimizing glucose absorption and lowering post prandial glucose
acarbose and miglitol belong to which class?
alpha glucosidase inhibitors
How should acarbose and miglitol be taken?
both are started at 25mg with the first bite of each main meal!
what are CI to using alpha glucosidase inhibitors (MAKES SENSE!)
IBD, colonic ulcerationn, intestinal obstruction (this is where they work)
Which drugs are weight neutral?
metformin acarbose/miglitol
Precose
acarbose
What is the MOA of DPP4 inhibitors?
prevent the enzyme from breaking down incretin hormones (GIP and GLP1) which help regulate blood glucose by increasing insulin release from the pancreaus and decreasing glucagon secretion from alpha cels!
Name the DPP4 inhibitors
sitagliptin, saxagliptin, linagliptin, alogliptin
sitagliptin
Januvia
Saxagliptin
Onglyza
sitagliptin/metformin
Janumet
Tradjenta
linagliptin
All DPP4 inhibitors require renal adjustment EXCEPT
linagliptin
Which class is associated with nasopharyngitis, URT infections and UTIs as well as peripheral edema
DPP4 inhibitors
Saxagliptin and linagliptin are major ____ substrates
3A4
Invokana
canagliflozin
What are the SEs associated with canagliflozin
female genital mycotic infections, UTIs, hyperkalemia, increased urination, renal insufficency, hypovolemia
What is the brand/generic of the SGLT2 inhibitor?
Invokana/canagliflozin
Byetta
exenatide
Bydureon
exenatide ER
What is the dosing/administration of IR exenatide?
start at 5mg SC BID (about 60 mins before morning/evening meals) abdomen preferred; count to 5 before withdrawing
How is exenatide ER given?
2mg SC every 7 days without regards to meals
Can exenatide be stored at RT
yes up to 30 days
What is the BB warning with Bydureon and Victoza?
CI in patients with hx of thyroid carcinoma or with multiple endocrine neoplasia syndrome (MEN2)
pancreatitis is a warning associated with which antidiabetic agents
GLP1
Which class requires a medguide?
GLP1 agonist
Which drugs can cause weight loss?
Byetta, SYmlin and Victoza
What is the main SEs with GLP1 agonists?
NAUSEA!!!! Vomiting; diarrhea; weight loss; hypoglycemia
BB warning for thyroid/endocrine neoplasms/carcinoma?
Victoza and Bydureon
What is the DAILY SC injection that can be given without regard to meals?
Victoza
Which SC injection should you never inject after a meal due to risk of hypoglycemia?
Byetta IR always right before meals!
What is the name of the amylin mimetic?
pramlintide (has amlin in it…close!)
pramlinitide
Symlin
If starting Symlin what must you do if patient is on insulin?
decrease rapid; short acting; and mixed insulins by 50%!
What is the MOA of pramlinitide?
amylin analog; slows gastric emptying, prevents increase in serum glucacon following a meal and increases satiety
Nausea is a MAJOR SE of which medications?
exenatide, liraglutide, pramlinitide
Which injectables should be given before meals?
Byetta and Symlin
All injectable antidiabetics (besides insulin) can be stored at RT for _____
30days
welchol
colesevelam
Who is Welchol approved for?
lipids and DM2! (dereases LDL and decrease A1C/postprandial
What is a major SE with Welchol?
constipation
what are the rapidacting insulins and when are they to be administered?
lispro (HumaLog), aspart (NovoLog),glulisine (Apidra) *given up to 15mins prior to eating, right when starting to eat or right after a meal….last about 3 to 5 hours
How should regular insulin be given?
30 mins prior to meal, last 6
How does NPH appear?
cloudy
what is the intermediate insulin, what is its onset/duration?
NPH (Novolin/Humulin N) onset is 1 to 2h and duration is up to 24 hours; usually peaks at 6 to 8h given 1 to 2 times daily
Which basal insulin peaks and puts a patient at increased risk of hypoglycemia?
NPH
What is in Novolog/Humalog Mix?
NovoLog 70/30: insulin aspart protamine suspen + reg. insulin aspart
HumaLog 50/50, 75/25: lispo protamine suspension + reg lispro
What is in Novolin/Humulin mixes?
contains both NPH and regular insulin
how should insulin be drawn into a syringe when mixing?
CLEAR before CLOUDY!! (alphabetical!)
What insulins can be mixed with NPH?
regular and rapid
When looking at insulin mix numbers which number belongs to which insulin? ex. 70/30
70% intermediate or long acting (1st part); 30% shorter acting (second part)
What is the typical starting insulin dose for patients with Type 1?
0.6 units/kg/DAY
How should basal bolus be divided? how about NPH/regular?
50/50 (the 50% bolus is divided amongst the 3 meals) and 2/3 should be NPH and 1/3 should be regular (generally dosed twice daily)
What is the insulin to carb ratio?
A ratio used to adjust insulin dose for carbs in a meal
one way to determine the insulin to carb ratio is using the Rule of ______
500 for rapid acting and 450 for regular
What is the equation to determin the amount of carbs covered by 1 unit of rapid insulin & what is this called?
500/total daily dose (TDD) of insulin = gram of carbs covered by 1 unit rapid acting insulin (Rule of 500)
What is the equation to determin the amount of carbs covered by 1 unit of regular insulin & what is this called?
450/total daily dose (TDD) of insulin = gram of carbs covered by 1 unit rapid acting insulin (Rule of 450)
How do you determine a correction insulin dose?
using correction factors (1800 for rapid and 1500 for regular)
What is the correcton factor equation for rapid acting insulin
1,800/TDD insulin = correction factor for 1 unit of rapid insulin
What is the correcton factor equation for regular acting insulin
1,500/TDD insulin = correction factor for 1 unit of regular insulin
How should insulin be initiated in a type 2 diabetic?
start with HS intermediate or long acting or AM long acting at 10 units or 0.2 units/kg
In type 2 diabetics how should you approach increasing units of insulin?
based on fasting glucose, increase by 2 units every 3 days until it’s consistently in target range of 70 to 130; can increase by larger units ie 4 if fasting >180
sliding scale
varies; generally similar to > 150; give 2 units for every 50 over (ex. for 200 250 give 4 units) of rapid or short acting
unused vials and pens should be ______ but if they’re in current use can be stored at _____
refrigerated; room temp up to a certain period of time
after treating hypoglycemia how soon should you test blood glucose?
15 mins; repeat if not corrected. once stable patient should eat a meal
When is glucagon used?
only if patient is unconscious or not conscious enough to self treat!
What is DKA caused by?
when there is not enough insulin and the body breaks down fat to make energy; this creates ketones which rise in the blood
Metformin cannot be used in ____ (COPD/HF)
hypoxia
How do you calculate the estimated average glucose when given an A1C
eAG = 28.7 x A1C minus 46.7
What are some alternate testing sites for testing glucose?
upper arm, thigh, calf, fleshy parts of hands
liraglutide
Victoza
What are some treatment options for hypoglycemia?
15 to 20 grams of carbohydrates are recommended for treating hypoglycemia which includes 8 oz of milk, 3to 4 glucose tabs, nondiet soda (4 oz), 2 tablespoons of raisins and other items. Be sure to retest in 15 minutes and have the patient eat a small amount of food to prevent recurrence
when should you consider starting insulin therapy?
when BG >300 or when A1C >10
doses of GLP1 agonist should be separated by at least….
6hrs throughout day
Which insulins are available OTC?
NPH and regular insulins
How many days can a levemir flexpen be used once opened?
42 days
What adjustment is necessary when changing twice daily NPH to glargine?
reduce dose by 20%
Diagnostic criteria for diabetes includes what values?
Diagnostic criteria also includes a fasting plasma glucose (FPG) of 126 mg/dL or higher or a 2hour plasma glucose of 200 mg/dL or higher during a 75 g oral glucose tolerance test (OGTT). A1C > 6.5%
How do you convert from once daily NPH to glargine or detemir
Itís a 1:1 ratio
A patient has been using NPH 20units before breakfast and 10units at bedtime. The doctor wants to switch them to Lantus once daily. How many units of lantus should they use?
24units ( add daily dose NPH; reduce by 20%)
How do you convert from glargine to determir or vice versa
1:1 conversion
When in use, which insulin products are good for 42 days
Regular: Novalin R; NPH: Novolin N vial; Mixed:Novolin 70/30 vials; Long acting: Levemir (pens & vials)
When in use, which insulin products are good for 28 days
all rapid acting insulin; NPH:Humalin N vials; Mixed: Humalog, Humalin & Novolog vials; Long acting: Lantus (pens & vials), Bydureon
When in use, which insulin products are good for 30 days
long acting: Byetta; Victoza; Symlin vials and pens
When in use, which insulin products are good for 14 days
NPH:Humalin N & Novolin N pens; Mixed: Novolog 70/30 pens
Humalog & Humalin pens last for how many days when in use
10 days
Humalin R 100 & 500 units last for how many days when in use
31 days
What are the symptoms for hypoglycemia
dizziness HA anxiety shakiness sweating increased hunger confusion jerky movements tremors palpitations blurred vison
Brand name for sitagliptin + Simvastatin
Juvisync
Saxagliptin + metformin
Kombiglyze ER
Linagliptin + metformin
Jentadueto
Generic Nesina
Alogliptin
Alogliptin+metformin
Kazano
Alogliptin+pioglitazone
Oseni
Brand name miglitol
Glyset
A dose reduction of sulfonylureas may be needed with initiation of which agents
TZD
GLP-1agonists
DDP-4 inhibitors
Canagliflozin
What are the Actos combination products
Pioglitazone + metformin =Actoplus Met IR&ER
Pioglitazone + glimepride =Duetact
Pioglitazone + alogliptin =Oseni
Which anti diabetic agents cause hypoglycemia
Sulfonylurea (worst): (chlorpropamide> glyburide> glimepride~ glipizide)
Meglinitides
GLP-1 agonists: (Liraglutide < Exenatide)
SGLT2: canagliflozin
DPP-4 inhibitors