Diabetes Pharmacological treatment Flashcards

1
Q

which elements are present on the physical activity checklist to manage diabetes?

A
  • minimum of 150min of moderate-to-vigorous intensity aerobic exercise per week (brisk walk)
  • resistance exercise (strength training) > 2x/week (arms, chest, back, legs, abdomen)
  • PA goals and involve multidisciplinary team
  • minimize uninterrupted sedentary time
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2
Q

on which evidence does the PA checklist base itself?

A
  • delay progression of disease itself and complication

- help in glycemic control and reducing medication for insulin resistance

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3
Q

why is a multidisciplinary team required when engaging in PA

A

when you start a new program of PA/exercise the whole treatment of diabetes will be affected -> medication and diet changes

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4
Q

which conditions must be assess before prescribing an exercise regimen

A
  • neuropathy
  • retinopathy
  • coronary artery disease
  • peripheral arterial disease
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5
Q

what are the ABCDES^3 of diabetes care and their targets

A
  • A1c: optimal glycemic control (usually <7%)
  • BP: optimal blood pressure control (<130/80)
  • Cholesterol: LDL <2.0mmol/L or >50% reduction
  • Drugs to protect the HEART
  • Exercise/Healthy Eating
  • Screening for complications
  • Smoking cessation
  • Self-management, stress and other barriers
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6
Q

which are the 2 insulin therapies for type 1 diabetes

A
  1. Basal [once a day] and bolus [at meals times] injection therapy
  2. continuous subcutaneous insulin infusion (insulin pump therapy)
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7
Q

why is insulin secretion so rapid?

A

when beta cells produce insulin, insulin is stored in vesicles which are ready to be released when there’s an increase in blood glucose

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8
Q

why is the blood glucose response at breakfast higher than at other meals?

A

during the overnight fasting period there are enzymatic reactions occurring promoting glucose anabolism (gluconeogenesis/glycogenolysis) which have to be stoped due to incoming glucose -> this switch takes time

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9
Q

what does basal insulin injection cover

A

the minimal amount on insulin circulating in blood - 50pm

used for overnight fasting period and in between meals

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10
Q

what are analogue types of insulin

A

human insulin produced by bacteria.
they are just formulated differently so that the release will be slower and cover only basal needs for basal injection or they can react faster with a higher peak and be removed from circulation more rapidly which reduces risks of hypo and hyperglycemia

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11
Q

what is the more conventional type of regiment for treating T1D compared to the intense regimen?

A

only 2 injections per day (vs. minimum of 3)
consistes of a premix which consists of rapid acting and intermediary acting insulin
NO BASAL

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12
Q

advantages and disadvantages of conventional type of regimen

A

advantage: doesn’t require education, good for someone who does not want to count their CHO or does not like to inject themselves
However, this is a last resort regimen because there is a risk of hyperglycemia at lunch time and hypoglycaemia after breakfast and dinner
=> more chronic hyperglycemia although controlled
+ FIXED insulin plan: it requires a strict meal plan in regards to CHO content, no skipping meals, as meal revolves around the insulin injection + physical activity could lea dot hypoglycemia

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13
Q

characteristics of Bolus types of insulin

A
  • rapid acting has a short onset, peaks sooner, and lasts for a shorter amount of time
  • short acting has a delayed onset, peaks later, but lasts for a longer time
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14
Q

characteristics of Basal types of insulin

A
  • intermediate acting has a delayed onset with a peak much later ans lasts for 3/4 day
  • long acting has a faster onset, no peak is observed and can last up to 24h => covers basal needs
    both require only one injection per day
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15
Q

intensive insulin regimen is recommended for ____

A

better glycemic control

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16
Q

advantages of intensive insulin therapy

A
  • more flexibility in timing and content of meals: insulin is adjusted according to CHO intake [must learn carb counting]
  • insulin dose may be adjusted to exercise
  • delays onset and slows progression of complications
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17
Q

what was observed during the follow-up of patients who underwent conventional vs intensive therapy

A

A1c levels maintained very high for conventional regimen (9%) where as goal is around 7% which was achieved by intensive therapy
+ there was a decrease in retinopathy, nephropathy, and neuropathy for those who followed intensive regimen+ significant reduction in MI, stroke, or CV death

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18
Q

insulin injection is done intravenously. True or false

A

FALSE, it is a subcutaneous injection: in the belly or button or leg by doing a simple pinch

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19
Q

what are the drugs called for management of type 2 diabetes?

A

antihyperglycemic agents

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20
Q

what is the first line medication prescribed to treat T2D? why?

A

Metformin because it is highly effective and doesn’t come with major side effects: we know of its safety, no risk of hypoglycemia, helps with weight control, affordable and easily accessible

21
Q

what is the mechanism of action of metformin?

A
  • decreases gluconeogenesis in liver which decreases glucose production
  • increases insulin sensitivity and in turn increases glucose uptake
22
Q

what are a few side effects of metformin?

A
  • affects mostly the GI (transient), B12 deficiency (10-30% of cases)
23
Q

mechanism of action of alpha-glucosidase inhibitors

A

delay intestinal glucose absorption

24
Q

mechanism of action of insulin secretagogues

A

stimulate insulin secretion by pancreas

short-acting (4-7h), long-acting (once daily)

25
Q

mechanism of action of incretin mimetics

A

stimulate insulin and reduce glucagon secretion; delay gastric emptying [induces satiety]

26
Q

what are two examples of incretin mimetics

A

DPP-4 inhibitors

GLP-1 receptor agonists

27
Q

mechanism of action of thiazolidinediones (TZDs)

A

increase insulin sensitivity in peripheral tissues and liver

28
Q

mechanism of action of SGLT2 inhibitors

A

reduce glucose absorption by the kidney by blocking glucose transport in the proximal renal tubule -> glucose is excreted in the urine: glycosuria

29
Q

when do you take antihyperglycemic agents other than metformin

A

when metformin is no longer efficient, when it reaches maximum dosage and glycemic target is not reached

30
Q

what is the problem associated with insulin secretagogues

A

they have an associated risk of hypoglycemia because they stimulate insulin secretion [too much stimulation relative to the meal/amount of CHO consumed]

31
Q

what is the particularity of incretin mimetics

A

they are peptides and must be injected, cannot be taken as capsules or else they will be digested/broken down

32
Q

mode of action of DPP-4 inhibitors

A

they inhibit DPP-4 enzyme which allows for GLP-1 secretion by the intestine which stimulates insulin release, inhibits glucagon release, slows gastric emptying which overall lowers blood glucose and increases satiety [better weight control]

33
Q

mode of action of GLP-1RA

A

GLP-1RA is a receptor agonist that binds to GLP-1 receptor and acts like GLP-1

34
Q

effects of semaglutide

A

those who took this drug and had predisposition to developing prediabetes => reverted

35
Q

advantages of SGLT2 inhibitors

A

when added to metformin there is a better efficacy on lowering A1c than other agents
rare hypoglycemia, lower BP, limit progression of chronic kidney disease, raise HDL

36
Q

what are the stages in treatment at diagnosis of type 2 diabetes

A
  • assess glycemic control, cardiovascular/renal status, dietary patterns and weight change
  • select individualized A1c target
  • start healthy behaviour interventions
  • lifestyle changes help attain A1c target by 3 months -> no pharmacotherapy, if not reached within 3 months: start metformin
  • start metformin is A1c is >1.5% above target, if target not reached after 3 months: adjust or advance therapy
  • symptomatic hyperglycemia: start insulin + metformin
37
Q

which antihyperglycemic drugs are the least favored

A

insulin secretagogues (hypoglycemia) and TZDs (weight gain)

38
Q

which antihyperglycemic drugs are preferred

A

GLP-1RA [very expensive though] and SGLT2 inhibitor

39
Q

which is the first factor to consider when prescribing an antihyperglycemic drug?

A

the relative A1c lowering when added to metformin

40
Q

why is there weight gain when injecting exogenous insulin but not with endogenous insulin secretion

A

the amount of insulin injected to have the same effect on reducing blood glucose is higher in terms of units compared to what is secreted naturally by pancreas
[pancreas Secretes insulin which goes straight to liver through portal vein -> suppress endogenous glucose production [less glucose production by liver] as opposed to exogenous insulin -> doesn’t go straight to insulin, reaches liver after those tissues -> glucose production continues during that time -> more insulin is injected vs than what would be secreted by pancreas facing same glucose challenge -> anabolic action of insulin explains weight gain

41
Q

which antihyperglcemic drugs are associated with weight loss

A

GLP-1RA and SGLT2 inhibitors

42
Q

drug-nutrient interaction associated with metformin

A

can reduce vitamin B12 absorption, take with meals

43
Q

drug-nutrient interaction associated with alpa-glucosidase inhibitors

A

take with first bite of meal (3X) or else NO EFFECT on lowering glucose absorption
limit alcohol

44
Q

drug-nutrient interaction associated with insulin secretagogues

A

avoid alcohol due to possibility of hypoglycemia with this drug

45
Q

drug-nutrient interaction associated with incretin mimetics

A

caution with alcohol, GI side effects: heartburn, belching, nausea, diarrhea

46
Q

drug-nutrient interaction associated with TZDs

A

none

47
Q

when diabetics are at risk of dehydration due to vomiting/diarrhea, what are the 2 recommendations

A
  • rehydrate appropriately [water, broth, diet soft drinks, diet Jell-O]
  • Hold SADMANS meds, restart once able to eat/drink normally [secretagogues, ACE-inhibitors, diuretics, metformin, angiotensin receptor blockers, non-steroidal anti-inflammatory drugs, SGLT2 inhibitors]
48
Q

who patients are recovering from illness and can eat and drink again, what should they do?

A
  • take DM medications as prescribed
  • may need more frequent small meals/snack
  • SMBG often: >4/d
49
Q

who should receive statins on top of antihyperglycemic agents and metformin regardless of baseline LDL-c

A
  • CVD or
  • age >40yrs or
  • microvascular complications or
  • DM >15yrs duration and age >30yr
  • warrants therapy