Endocrine Medications - Quiz 6 Flashcards
What meds cause Hyperglycemia?
Steroids
Antipsychotics
HIV Meds
Octreotide
What kind of stress causes Hyperglycemia?
Illness
Trauma
Pregnancy
How is Diabetes Diagnosed?
Fasting BS > 126
or
Random BS > 200
What is the advantage of using a Blood Glucose Monitor?
Portable, instant, and accurate using a tiny bit of blood
What is the disadvantage of obtaining Blood/Plasma Glucose?
Need a lot of blood & delay of results
What is the normal HgA1c?
4 - 6%
ADA recommends < 7-8.5% based on age
How does Insulin work?
Binds to Insulin receptors on the Plasma membrane to translocate Glucose Transporters
What do Glucose Transporters do?
Bring Glucose into Cells
Shift Metabolism to Glucose Storage
Electrolyte & Amino Acid Uptake
Protein Synthesis
Regulate Gene Expression
What happens with Insulin Resistance?
↓Glucose Transport Proteins
↓Glucose Uptake
Compensatory Hyperinsulinemia
Insulin receptor number is _______ related to the plasma concentration of insulin
Insulin receptor number is INVERSELY related to the plasma concentration of insulin
What is the half-life of IV Insulin?
5 - 10 minutes
Kidney Disease prolongs Elimination _______ than Liver Disease
Kidney Disease prolongs Elimination MORE than Liver Disease
How much Insulin is secreted by the Pancreas?
1 unit/hr
5-10x more w/ Food
40 units/day
Insulin response to glucose is ________ for Oral Ingestion than for IV Infusion
Insulin response to glucose is GREATER for Oral Ingestion than for IV Infusion
Which Insulin is Long Acting?
Degludec (2 Days)
&
Glargine (1 Day)
Which Insulin are Intermediate Acting?
NPH (18 Hrs)
&
Detemir (12 Hrs)
Given BID
Which Insulin have Short/Rapid acting onset?
Regular (30 min)
Aspart-Novolog (15 min)
Lispro (15 min)
Glulisine (15 min)
Aspart-Fiasp (15 min)
For Mixed Insulin, what does the larger number represent?
Intermediate Insulin
EX: Novolog Mix 70/30 = 70% Intermediate & 30% Rapid
Older Insulin come from animals. What is different about the Newer Insulin?
No more problems with allergy or immunoresistance from animal products
What are the side effects of Insulin?
Hypoglycemia - Most Serious
HypoK
HypoMag
HypoPhos
Refeeding Syndrome
What are the symptoms of Hypoglycemia?
Compensatory ↑Epinephrine
Diaphoresis
Tachycardia
HTN
Rebound Hyperglycemia
CNS Problems
Lipodystrophy
What can develop with Chronic use of NPH?
Protamine Antibodies
What constitutes as Insulin Resistance?
Pts. needing > 100 units/day
What can cause Insulin Resistance?
Trauma
Surgery
Infection
What is Afreeza?
Rapid Acting Inhaled Insulin
How should Insulin Sliding Scales be managed?
Must give with Basal Glucose Control
What is the Peri-Operative Fasting Glucose Goal?
110 - 180 mg/dL
< 150 mg/dL for Joints
Which Insulin can be completely held Peri-Operatively with the Non-Tight Control Regimen?
Degludec
How do Sulfonylureas work?
Act on Pancreatic Beta Cells to release Insulin - given daily
What are the risks associated w/ Sulfonylureas?
Hypoglycemia (especially w/ Renal Failure)
High Failure Rate
Allergy
Which Sulfonyluria is the safest to use with Renal Failure?
Glipizide - no active metabolites
Which meds are 2nd Gen. Sulfonylureas?
GLyburide
GLipizide
GLimepiride
Which Sulfonylurea has the most risk for Hypoglycemia?
Glyburide
Which meds are Alpha-Glucosidase Inhibitors?
Acarbose
&
Miglitol
How do Alpha-Glucosidase Inhibitors work?
↓Breakdown & Absorption of Carbs
Which meds are Meglitinides?
Repaglinide
&
Nateglinide
How do Meglitinides work?
Same as Sulfonylureas - Increase Insulin from Beta Cells, but faster onset & shorter duration
Meglitinides have ______ risk for Hypoglycemia than Sulfonylureas
Meglitinides have LESS risk for Hypoglycemia than Sulfonylureas
What are the advantages of using the Biguanide, Metformin?
Low Hypoglycemia Risk
Positive Lipid Effects
Weight Loss
How does Metformin work?
↓Liver Glucose Production
↓Glucose Absorption
↑Insulin Sensitivity
Positive Changes in Gut Microbio
What are the side effects of Metformin?
Significant GI Effects - Anorexia, Nausea, Diarrhea
&
Lactic Acidosis
How should Metformin be managed Peri-Operatively and for IV Contrast?
Hold 48hrs before Surgery & IV Dye & 48hrs after IV Dye
Monitor for Lactic Acidosis & Renal Function
Avoid Hypovolemia & Hypoxemia
What are Contraindications to Metformin?
Creat > 1.4 (f), 1.5(m)
GFR < 30
GFR < 45 if never on therapy
> 80 y.o.
Liver Dysfunction
CHF
Which meds are Thiazolidinediones?
Rosiglitazone
&
Pioglitazone
How do Thiazolidinediones (TZDs) work?
Basal Meds
↓Insulin Resistance
↓Liver Glucose Production
Needs Insulin for them to work
What are the side effects of Thiazolidinediones (TZDs)?
Weight Gain
Liver Toxicity
Peripheral Edema
CHF
Bone Fractures
MI
Which meds are DPP-4 Inhibitors?
-gliptins
How do DDP-4 Inhibitors work?
Increase Insulin Secretion & Satiety
&
Decrease Gastric Emptying & Glucagon Secretion
What are the side effects of DDP-4 Inhibitors?
UTI
URI
Pancreatitis
Angioedema
Steven Johnson’s
Joint Pain
Low Hypoglycemic Risk
Which Incretin Mimetics are GLP-1 Analogs and how do they work?
Exanatide & -glutides -
Prolongs gastric emptying & reduces glucagon after meals
Which Incretin Mimetic is an Amylin Analog and how does it work?
Pramlinide
↑Insulin
↑Beta Cell Growth
↓Gastric Emptying
↓Appetite
What are the side effects of GLP-1 Analogs?
N/V/D
Pancreatitis
ARF
Weight Loss
When should the Incretin Mimetic, Exanatide be avoided?
Renal Failure
When should the Incretin Mimetic, Liraglutide (Victoza) be avoided?
Thyroid Carcinoma
What is the Black Box Warning for Amylin Analogs?
Hypoglycemia, especially for DM1
What are the adverse effects of Amylin Analogs?
N/V
Anorexia
Headache
Gastroparesis
Which meds are SGLT2 Inhibitors?
-Flozins
How do SGLT2 Inhibitors work?
↑Urinary Glucose Excretion
When are SGLT2 Inhibitors Contraindicated?
CrCL < 30
&
ESRD
What are Disadvantages to using SGLT2 Inhibitors?
Hypotension
Risk of Toe Amputations
Euglycemic Ketoacidosis
Urinary Side Effects
What does the FDA recommend for managing SGLT2 Inhibitors Peri-Operatively?
Stop 3 Days before Surgery
&
May Restart when pt is eating again
What are the characteristics of Armour Thyroid?
Animal Thyroid
4:1 T4 to T3
Manufacturing Inaccuracies
What are the characteristics of Levothyroxine?
Contains only T4
Long Half-Life (7 Days)
Which Thyroid med only contains T3?
Liothyronine
How does Liothyyronine compare to Levothyroxine?
3x more potent w/ rapid onset & short duration
What is the Disadvantage of Liothyronine?
High Risk for CV Side Effects
What are some Anti-Thyroid Meds?
Proppylthiouracil (PTU)
&
Methimazole
How do Anti-Thyroids work?
Inhibits Thyroid Hormone formation using Iodine
&
Blocks conversion of T4 to T3
Needs few days for it to work
What are the Side Effects of Anti-Thyroids?
Leukopenia
Rash
Arthralgia
Lupus Symptoms
Fever
Granulocytosis
What are some Iodines used for Hyperthyroidism?
Lugol’s
&
Saturated KI
How do Iodines work as Anti-Thyroids?
Used w/ Propranolol to inhibit Thyroid Hormone Release