Diabetes Mellitus Flashcards
Group of metabolic diseases characterized by increased levels of glucose in the blood (hyperglycemia) resulting from defects in insulin secretion, insulin action, or both.
DIABETES MELLITUS
Risk Factors of dm
• Family history of diabetes
• Obesity
• Race (African Americans, Hispanic Americans, Native Americans, Asian Americans, Pacific Islanders)
• Age > 45 yrs. Old
• Hypertension
• HDL cholesterol level <35 mg/dl and triglyceride level >250 mg/dl
Classification of DM:
• Type 1 diabetes
• Type 2 diabetes
• Gestational diabetes
• Diabetes mellitus associated with other conditions or syndromes
Diagnostic tests and findings for dm
Diagnostic tests and findings:
• Fasting plasma glucose
• Random plasma glucose
• Oral Glucose Tolerance Test (OGTT)
Symptoms of diabetes plus casual plasma glucose concentration
equal to or greater than 200 mg/dl (11.1mmol/L).
casual
is defined as any time of day without regard to time since last meal.
classic symptoms of diabetes
polyuria, polydipsia, and unexplained weight loss.
Fasting plasma glucose
greater than or equal to 126 mg/dl (7.0 mmol /L)
no caloric intake for at least 8 hours
fasting
• Characterized by destruction of the pancreatic beta cells.
• Abnormal response in which antibodies are directed against normal tissues of the body, responding to these
tissues as if they were foreign.
type 1
Destruction of the beta cells results in
decreased insulin production, unchecked glucose production by the liver, and fasting hyperglycemia.
concentration of glucose in the blood exceeds the renal threshold for glucose
usually 180 to 200 mg/dl (9.9 to 11.1 mmol/L),
the kidneys may not reabsorb all of the filtered glucose; the glucose then appears in the urine
glycosuria
When excess glucose is excreted in the urine, it is accompanied by excessive loss of
fluids and electrolytes.
When excess glucose is excreted in the urine, it is accompanied by excessive loss of fluids and electrolytes.
osmotic diuresis
resulting in an increase production of ketone bodies
fat breakdown
Ketone bodies are acids that disturb the acid-base balance of the body when they accumulate in excessive amounts
dka
two main problems of type 2
ü Increased Insulin resistance
ü Decreased Insulin sensitivity
ü Impaired insulin secretion.
Describe type 2
• Idiopathic
• This is called metabolic syndrome, which includes hypertension, hypercholesterolemia, and abdominal
obesity.
• Despite the impaired insulin secretion that is characteristic of type 2 diabetes, there is enough insulin present to prevent the breakdown of fat and the accompany production of ketone.
Management for type 2
nutritional therapy
exercises
self monitoring of blood glucose
glycated hemoglobin
testing for ketone
insulin therapy
oral antidisbetic agents
how many pounds to lose per week for type 2?
1-2
how many calories are subtracted from the daily total in type 2?
500-1000
recommend caloric distribution for type 2
higher in carbohydrates than in fat and protein
Foods high in carbohydrates, such as ______ are not totally eliminated from the diet but should be eaten in
moderation because they are typically high in fat and lack vitamins, minerals, and fiber.
sucrose
limit total intake of cholesterol to?
less than 300 mg/day.
improve blood glucose levels, decrease the need the exogenous insulin, and
lower total cholesterol and low-density lipoprotein levels in the blood
increase fiber in the diet
_____ is absorbed before other nutrients and does not require insulin for absorption. ______ amounts can be
converted to ______, increasing the risk for _____
alcohol
large
fats
DKA
_______ lower blood glucose levels by increasing the uptake of glucose by body muscles and by improving
insulin utilization
exercise
Exercise at _______ (preferable when blood glucose levels are at their peak) and in the _______
each day.
at the same time
same amount
_____ is a safe and beneficial.
walking
Eat _________ snack before engaging in moderate exercise to prevent unexpected _____.
15-g carbohydrate
hypoglycemia
Use proper_______. Avoid exercise in extreme heat or cold. Inspect feet daily after exercise. Avoid exercise
during periods of poor metabolic control
footwear
This allows for detection and prevention of hypoglycemia and hyperglycemia and plays a crucial role in
normalizing blood glucose levels,
Self- Monitoring of Blood Glucose
also referred to as glycosylated hemoglobin, HgbA1C, or A1C
Glycated hemoglobin
Glycated hemoglobin (also referred to as glycosylated hemoglobin, HgbA1C, or A1C)
• is a blood test that reflects average blood glucose levels over a period of approximately_______
2 to 3 months.
_______ in the urine signal that there is adeficiency of deficiency of insulin and control of type 1 diabetes is deteriorating. The risk of DKA is high.
ketone
In type 1 diabetes, ______ insulin must be administered for life because the body loses the ability to produce insulin.
exogenous
Rapid acting insulins
lispro
aspart
glulisine
short acting insulins
humalog R
Novolin R
Iletin II R
intermediate acting insulins
nph
novolin L (lente)
Novolin N (NPH)
Long acting insulins
glargine
determir
LISPRO
ONSET
PEAK
DURATION
INDICATION
10-15 min
1hr
2-4hr
Used for rapid reduction of glucose
ASPART
ONSET
PEAK
DURATION
INDICATION
5-15 min
40-50 min
2-4 hr
Level, to treat postprandial
GLULISINE
ONSET
PEAK
DURATION
INDICATION
5-15 min
30-60
2hr
Hyperglycemia, and/or to prevent noctumal hypoglycemia
Regular (Humalog R, Novolin R, Iletin II Regular
ONSET
PEAK
DURATION
INDICATION
1/2-1hr
2-3 hr
4-6 hr
Usually administered 20-30 min before a meal; may be taken alone or in combination with longer-acting insulin
Can be incorporated to an IV infusion
Novolin L [Lente], Novolin N [NPH]
ONSET
PEAK
DURATION
INDICATION
3-4 hr
4-12hr
16-20 hr
Usually taken after food
Glargine (Lantus) Determir (Levemir)
ONSET
PEAK
DURATION
INDICATION
1hr
continuous (no peak)
24hr
used for basal dose
preparations have a shorter duration of action than insulin from animal sources because the presence of animal protein triggers an immune response that results an in the binding of animal insulin.
human insulin
are called regular insulin
short acting insulin
Regular insulin is a ____ solution and is usually administered _________. Regular insulin is the only insulin approved for ______ use.
clear
20-30 mins before meal
IV
NPH insulin
intermediate acting insulin
is absorbed very slowly over 24 hours and can be given once a day.
“Peakless” basal or very long-acting insulins
complications of insulin therapy
local allergic reactions
systemic allergic reactions
insulin lipodystrophy
resistance to injected insulin
morning hyperglycemia
Oral antidiabetic agents
sulfonylureas
biguanide
alpha-glucosidase inhibitors
thiazolidinediones (glitazone)
Dipeptide-pepidase-4 (DDP-4) Inhibitors
Stimulate beta cell of the pancreas to secrete insulin;
sulfonylureas
Ø Inhibits production of glucose by the liver
Ø Increase body tissues sensitivity to insulin
Ø Decrease hepatic synthesis of cholesterol
Ø The only biguanide in the market: Metformin
biguanide
Delay absorption of complex carbohydrates in the intestine and slow entry of glucose into
systemic circulation.
Alpha-glucosidase inhibitors
Sensitized body tissue to insulin;
Thiazolidinediones (Glitazone)
Increase and prolongs the action of incretin, a hormone that increases insulin release and
decreases glucagon levels, with the result of improved glucose control
Dipeptide-pepidase-4 (DDP-4) Inhibitors
Progressive rise in blood glucose from bedtime to morning
Insulin waning