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What's the difference between DM1 + DM2?
DM 1: hereditary, younger kid pts, body does not make insulin, aka insulin dependent diabetes
DM 2: lifestyle, any age, body produces insulin that cant get into cells, aka non-insulin dependent
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Hyperglycemia vs Hypoglycemia
hyperglycemia: high blood sugar, presents as polyuria, polydipsia, fatigue, headache, leads to ketoacidosis. call doc
hypoglycemia: shaking, confusion, hunger, unconsciousness. give OJ
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What are some of the consequences of untreated DM?
- Hypoglycemia/Hyperglycemia
- Macrovascular damage
- -heart disease, hypertension, stroke
- Microvascular damage
- - retinopathy, nephropathy, neuropathy, ED
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Common diagnosis test of DM
- Fasting Plasma Glucose (FPG)
- -test needs to be positive 2 separate days
- -pt needs to fast for 8 hours before taking test
- -normal FPG: 70-100
- -pre DM: 101-125
- -diabetic: >126
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DM 1 therapy vs DM 2 therapy
DM 1: needs the insulin, mgmt of BP & lipids
DM 2: maybe insulin & anti-diabetic drugs
both need: diet and exercise
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How do you check the progress of treatment?
- Hgb A1c: gets the avg sugar lvls of the past 2-3 months
- Self-Monitoring of blood glucose (SMGB): finger prick at home
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Know the 4 types of insulin & what makes them different from another
- Insulin Lispro (Humalog) - quick one, take with meals
- Regular Insulin (Humulin R, Novolin R) - human insulin, take with meals to anticipate increased glucose OR take through out the day to maintain glucose levels. IV in ER
- Neutral Protamine Hagedorn (NPR) Insulin suspension - its cloudy, mixable, sugar control between meals and at night (2 times a day)
- Insulin Glargine (Lantus) - 24 hour hold, only once a day,
- Premixed
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Rules of mixing insulin
- Short acting & longer lasting insulin mix
- -NPH the only long lasting insulin allowed to mix
- -short acting drawn up, then long lasting drawn.
- -in the syringe it looks like cloudy to clear
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Administration of insulin
sub q: injection sites in upper arm, thigh and abs. abs most common. always move injection site 1 in away from the previous.
insulin pump: just replace the the meds in a couple of days. allows a steady flow of insulin then a bolus of insulin before meals
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Other uses for insulin
- IV - for ER and ketoacidosis
- hyperkalemia - increase cellular uptake of K = lower K levels
- diagnosis of growth hormone (GH) deficiency
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dosage considerations of insulin
- Exercising: Blood sugar is decreased = decrease insulin
- stressed: causes an increase in blood sugar = increase insulin
- diet: good diet lowers sugar intake = lower insulin
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3 types of dosing schedules for insulin
- Conventional therapy: mixed insulin at breakfast and dinner. only 2 shots
- Intensive conventional therapy (sliding scale): One shot of Insulin Glargine at night, then a shot of regular insulin before every meal. flexible
- Continuous subQ infusion: this is with the pump, same idea with sliding scale but with a pump.
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What is diabetic ketoacidosis?
- It is more common in DM 1 pts.
- There is an extreme low of insulin
- presents as: hyperglycemia, waterloss, appears to be drunk, fruity breath, production of ketoacids
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How do you treat diabetic ketoacidosis?
correct the glucose level, insulin replacement, bicarbonate to correct pH, H2O and Na replacement,K replacement
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What is Hyperglycemic hyperosmolar nonketotic syndrome (HHNS)?
- Hyperglycemia caused by insulin deficiency
- more common in DM2
- No fruity breath, no change in pH, no ketoacids
- happens during stress, s/s are slow to appear
- presents as: dehydration, thickened blood,
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Metformin (Glucophage)
- Uses, MOA, AE, Toxicity, Memory Trick
- uses: DM for pts who skip meals, prevention of DM2, gestational DM,
- MOA: lowers glucose levels by decreasing the absorption and stopping glucose production in liver, increases sensitivity of insulin receptors in fat and muscle cells
- AE: nausea, diarrhea, appetite suppression (wt loss), decrease absorption of B12 & folic acid
- Toxicity: lactic acidosis (brings the pH lvl low)
- Memory trick: Glucophage - eat up the glucose. reduces glucose lvls
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Sulfonylureas (Micronase)
MOA, AE, D2D, Memory trick
- MOA: stimulates the pancreas to produce more insulin. "squeezes to get the insulin"
- AE: hypoglycemia - if you forget to eat
- teratogenicity - no prego
- D2D: alcohol - decrease BS
- beta blockers - hides the effect of hypoglycemia
- Memory trick: sulfonylureas = squeeze
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Repaglinide (Prandin)
MOA, AE, Memory Trick
- MOA: promotes insulin release
- AE: Hypoglycemia, Teratogenicity
- must eat a meal within 30 mins, or else hypo
- Memory trick: prandin = brandin...has DM2 and eats every 30 mins
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Pioglitazone (Actos)
MOA, AE, D2D, Memory Trick
- MOA: makes receptors more sensitive to insulin, lowers glucose production
- AE: common- respiratory tract infection, headache, myalagia, heart failure, fluid retention, hypoglycemia, ovulation in postmenopausal women, bladder CA, fractures in women
- D2D: insulin
- Memory: pioGLITAzone, glitter like jems, jems are rare, this is the only one with crazy AE
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Acarbose (Precose)
MOA, AE, D2D, Memory Trick
- MOA: delays the absorbtion of dietary carbs (carbs are made up of glucose)
- AE: GI effects, anemia - because cant absorb iron, hepatoxicity
- D2D: metformin - more GI effects, and acarbose lowers the absorption of metformin (acarbose dominates)
- Memory: aCARbose, in the car someone always farts, or delayed car ride
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Sitagliptin (Januvia)
MOA, AE, Memory Trick
- MOA: stimulates incretin hormones = ↥ insulin release and suppresses release of glucagon
- AE: upper respiratory tract infection, headache, pancreatitis
- Memory: sitaglipTIN - stimulates increaTIN
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Exenatide (Byetta)
MOA, AE, D2D, Memory
- MOA: mimics increatin - slows gastic emptying, stimulates glucose dependent release, slows release of glucagon, suppresses appitite
- AE: hypoglycemia, reducing effects of med eventually, pancreatitis, fetal harm
- D2D: slows absorption of oral drugs, OCP, give dx 1hr before
- Memory: byetta - BYE appitite
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