Title: All About Diabetes
1All About Diabetes
By Shirley(My Notes)
2What Causes Diabetes?
- Type I-The pancreas is unable to produce insulin.
Childhood and genetic tendency are two
possibilities. Theres a change in the pancreatic
function and the cells that normally produce
insulin are destroyed. The bodys own immune
system may think the pancreas is a foreign body!
This form often appears at a time of physical
stress or during illness when the body produces
more glucose. Unable to metabolize carbohydrates. - Type II-The pancreas can still produce insulin
but the amount is inadequate and/or the insulin
cant be used to its full extent by the tissues.
Most people who have this type are overweight.
This type is the most prevalent.
Glucose-70-110 mg/dl
3Signs Symptoms
- Type I-Polyuria (Frequent Urination)-Polydipsia
(Excessive thirst)-Polyphagia (Excessive
hunger)-Fatigue/Weakness-Weight
loss-Ketoacidosis (ketonform of acetone.
Acidosisaccumulation of ketones in the body
resulting from extensive breakdown of fats
because of bad carbohydrate metobolism.)
- Type II-Often nonspecific but may have some of
the same classic symptoms as Type I.
-Fatigue-Recurring infections-Delayed wound
healing. - -Visual disturbances.
4Type I Type IIWhats the difference?
- Type II(90)-Patients are usually 35 but it
can occur at any age. -Signs symptoms occur
gradually. -Excessive endogenous insulin may be
adequate but inadequate secretion and
use.-Patient usually obese May be normal
weight. -Islet cells are absent.-Insulin
required for some. Diet, exercise my be only
necessary treatment for others.-Obesity
sedentary lifestyle are environmental factors.
-Resistant to ketosis except during infection or
stress. -Frequent neurologic and vascular
complications. -
- Type I(5-10)-More common in young people but
can happen at any age.-Signs and symptoms have
abrupt onset.-Minimal or ABSENT endogenous
insulin.-Patient usually thin.-Need insulin to
live!-Islet cell antibodies are often present at
onset. -Virus Toxins are environmental
factors. -Prone to ketosis at onset or during
insulin insufficiency.-Frequent neurologic and
vascular complications. -
5- Diabetes is more often seen in Hispanics, Native
Americans, and African Americans. However, anyone
can get it.
6Diagnosing Diabetes
- Diagnosis must be confirmed on a subsequent day
by any of the diagnostic methods used. - FPG (Fasting Plasma Glucose)-Preferred method of
diagnosis. Exceeding 200 mg/dl - Random plasma glucose measurement exceeding 200
mg/dl. Must have other signs and symptoms too. - 2-hour OGTT (Oral-glucose tolerance test)
exceeding 200 mg/dl using glucose load of 75g.
7Treatment-Insulin
- Regular(Humulin R, Novolin R, Regular
Iletin)Short-actingOnset ½ -1 hourPeak 2-3
hoursDuration 4-6 hours - NPH or Lente(Humulin N, Novolin N, Humulin L,
Novolin L)Intermediate-actingOnset 2
hoursPeak 6-8 hoursDuration 12-16 hours - Ultralente(Humulin U)Long-actingOnset 2
hoursPeak 16-20 hoursDuration 24 hours
- Lispro (Humalog)Rapid-ActingOnset 15
minutesPeak 60-90 minutesDuration 3-4 hours - Insulin glargine (Lantus)Long-actingOnset 1-2
hoursPeak No pronounced peakDuration 24
hours
In the past, pork and beef insulin was used. Now
mostly human insulin which is derived from common
bacteria or yeast cells using recombinant DNA. It
is not harvested from humans.
8Insulin Regimens
Regimen Type of insulin Time interval Positives Negatives
Single Dose Intermediate 7 AM to a little after 6 PM One injection should cover lunch and dinner. No coverage of fasting, breakfast, or nighttime coverage of hyperglycemia is available.
Split-Mixed 70/30 Intermediate Regular or Humalog 2 injections cover 24 hours. 2 injections are required. Patient has to have set meal pattern.
Split-Mixed Intermediate Regular or Humalog 3 injections cover 24 hours, especially during early AM hours. Reduced potential for 2-3 AM hypoglycemia. 3 injections are required.
Multiple Dose Intermediate Regular or Humalog More flexibility allowed at mealtimes and for how much eaten. 4 injections are required. Need premeal glucose checks. Pts. W/Type I will need basal insulin.
Multiple Dose(Split-Dose long-acting) Ultralente Regular or Humalog and long-acting insulin Insulin delivery more like normal insulin delivery. Requires 3 or 4 injections, premeal glucose checks retiring too.
9Mixing Insulins
- Wash Hands.
- After inspection, carefully rotate NPH insulin
bottle to mix insulin. - Wipe off tops of insulin vials with alcohol swab.
- Draw back air into the syringe that will equal
the total dose. Ex 36 U of air/36 U of NPH
insulin. - Inject that equal amount of air into NPH vial.
- Inject same amount of air equal to regular dose
of regular insulin. Ex. 12 U of air/12 U of
Regular insulin. - Invert regular insulin bottle and withdraw
regular insulin dose. - Dont add more air to NPH vial but follow Regular
by withdrawing NPH. - 36 1248 U (Total Dose)
10Injection Sites
- Most commonly by subcutaneous (SQ). Given by
intravenous (IV) when immediate action needed. - Fastest absorption in the abdomen, then the arm,
then the thigh, and lastly the buttock. - Do not inject into a site that is going to be
exercised. - Prevent lipodystrophy (lumps dents in the
skin-Human insulin reduces risk) by rotating
sites. Rotate injection within one particular
site. Think of the abdomen as a checkerboard.
11Insulin syringes
- Most are U100 which equal 1 ml.
- 0.5 ml used for 50 U or less.
- 0.3 ml used for 30 U or less.
- Smaller syringesMore advantages
- No need to use alcohol swab on site before
injection when self-injecting. - Insulin pens are good too. Usually preloaded with
insulin and look less medical. InDuo combines
an insulin syringe with a blood glucose monitor!
? - Insulin pumps-Continuous SQ insulin infusion.
Looks like a pager. Catheter inserted into SQ
tissue in the abdominal wall. - Intensive insulin therapy-An alternative to the
insulin pump. Consists of multiple daily insulin
injections with frequent self-monitoring of blood
glucose.
12Insulin, Insulin, Insulin
- After you open the insulin, write the date on the
vial. - Insulin can be stored at room temperature for 30
days. After that, throw it away even if there is
some still left. - Do not store insulin in very cold places or very
warm places. - Dont store it in direct light.
- Take your insulin before you eat. If you take
Lantus, take it at bedtime. Also, never mix
Lantus with another insulin. - Take Humalog or Novolog 15 minutes before eating.
- Take your insulin and eat at the same time every
single day. - Side Effects? Hypoglycemia, weight gain.
13Medicine
- Sulfonylureas-Primary use is to increase insulin
production from the pancreas. Examples
tolbutamide (Orinase), acetohexamide (Dymelor),
tolazamide (Tolinase), and chlorpropamide
(Diabinese). - Meglitinides-Also increases insulin production.
Offers reduced potential for hypoglycemia because
of fast absorption. Examples repaglinide
(Prandin), and nateglinide (Starlix). - Biguanides-Primary action is to reduce glucose
production from the liver. Also enhances insulin
sensitivity at tissue level and improves the
transport of glucose to the cells. Example
metformin (Glucophage). Combinations include
metformin with glyburide (Glucovance),
rosiglitazone (Avandia), and glipizide
(Metaglip). - a-Glucosidase inhibitors-Starch blockers.Works by
slowing down the absorption of carbohydrates in
the small intestine. Most effective in lowering
post-prandial blood glucose when taken with the
first bite of each main meal. Not effective
against fasting hyperglycemia. Examples acarbose
(Precose), and miglitol (Glyset). - Thiazolidinediones-Insulin sensitizers. Most
effective with people who have insulin
resistance. Improve insulin sensitivity,
transport, and utilization of target tissues.
Will not cause hypoglycemia when used alone but
still risky if used with a sulfonylurea or
insulin. This med may even improve lipid profiles
and blood pressure levels! Examples pioglitazone
(Actos), and rosiglitazone (Avandia).
14Complications of Diabetes
- Hypoglycemia
- Diabetic Ketoacidosis (DKA)
- Hyperosmolar Hyperglycemic Nonketotic Syndrome
(HHNS) - If the patient is sick, make sure they know to
stay on their insulin or meds for diabetes and to
continue their nutritional therapy.
15Acute Complications
- Diabetic Ketoacidosis (DKA)-Also known as
diabetic acidosis and diabetic coma. -Caused by
a major deficiency of insulin.-Is characterized
by hyperglycemia, ketosis, acidosis, and
dehydration.-Most often seen in Type I but can
occur in Type II also.-Factors that cause it
include illness, infection, inadequate insulin
dose, undiagnosed Type I diabetes, poor self-care
and management.-Renal failure may occur from
hypovolemic shock. -Patient may become comatose
from dehydration, electrolyte imbalance, and
acidosis. If untreated, the patient would die.
-Signs and Symptoms of DKA include poor skin
turgor from dehydration, dry mucous membranes,
tachycardia, and orthostatic hypotension. Early
symptoms may show lethargy and weakness. Skin may
become dry and loose and the eyeballs may become
soft and sunken in. Abdominal pains is another
symptom. There may be anorexia and vomiting.
Breath may have a fruity, acetone odor.-Kussmaul
respirations (rapid, deep breathing) will be
another ultimate sign.
LabBlood Glucose gt250 mg/dl, pH lt7.35, serum
bicarbonate lt15 mEq/L, ketones in blood and
urine.
16Emergency Treatment for DKA
- Initial Interventions-Ensure patent
airway.-Administer O2 via nasal cannula or
non-rebreather mask.-Establish IV access with
large-bore catheter.-Begin fluids with 0.9 NaCl
solution 1L/hr until blood pressure is stable and
urine output is 30-60 ml/hr.Begin continuous
regular insulin drip. 0.1 U/kg/hr.-Identify
history of diabetes, time patient last ate, and
time/amount of last insulin injection.
- Monitoring-Monitor VS, level of consciousness
(LOC), cardiac rhythm, O2 Sat., and urine output.
-Assess breath sounds for fluid overload.
-Monitor serum glucose and serum potassium.
-Give potassium to correct hypokalemia. -Give
sodium bicarbonate if acidosis is severe. (pH
lt7.0)
17Another Complication
- Hyperosmolar hyperglycemic nonketotic syndrome
(HHNS)-Life-threatening!-May occur in the
diabetic who can produce enough insulin to
prevent DKA but not enough to avoid severe
hyperglycemia, osmotic diuresis, and
extracellular fluid depletion.-Unlike the
patient with DKA, the patient with HHNS usually
has enough insulin so that ketoacidosis does not
occur. -In the early stages of HHNS, there are
few symptoms which means that blood glucose
levels can get really high before the problem is
noticed. -Often occurs in the older Type II
diabetes patient. -Signs Symptoms of HHNS
include extreme hyperglycemia, severe osmotic
diuresis, decreased sodium, potassium, and
phosphorous, dehydration, decreased renal
perfusion, hypotension, hemoconcentration,
oliguria, thrombosis, increased lactic acid.
-Ultimately seizures, shock, coma, and death.
Lab Blood glucose gt400 mg/dl, marked increase in
serum osmolality. Ketone bodies are absent or
minimal in blood or urine.
18Emergency Treatment for HHNS
- High mortality rate. Needs greater fluid
replacement than DKA. - Therapy is similar to that of DKA and includes
immediate IV administration of 0.9 or 0.45 NaCl
at a rate dependent on the patients cardiac
status and the degree of fluid volume deficit. - Regular insulin given by IV bolus. Afterwards
its given as an infusion after fluid replacement
therapy is begun to help in reducing the
hyperglycemia. - After the blood glucose levels fall to about 250
mg/dl the IV fluids that contain glucose are
given to prevent hypoglycemia. - Electrolytes are monitored and will be replaced
if necessary. - Hypokalemia (low potassium) is not as significant
in HHNS as in DKA although there may still be
potassium deficits that need replacement. - VS, IO, skin turgor, lab values, and cardiac
monitoring are constantly assessed to keep a
check on the fluid and electrolyte replacement. - Patients with renal or cardiac problems need
special monitoring to avoid fluid overload.
19Hypoglycemia
- Low blood glucose. This occurs when there is too
much insulin in proportion to available glucose
in the blood, causing the blood glucose level to
fall to lt70mg/dl. - As the brain needs a constant supply of glucose,
mental functioning can be compromised. - Signs Symptoms confusion, irritability,
diaphoresis, tremors, hunger, weakness, and
visual disturbances. - Can look a lot like drunkenness.
- If untreated, it can progress to loss of
consciousness, seizures, coma, and death. - Hypoglycemic Unawareness-Patient may not have
any warning signs or symptoms. Autonomic diabetic
neuropathy interferes with the secretion of the
hormones that cause the symptoms. Also at risk
are elderly patients who are on B-adrenergic
blockers. -If patient has a risk factor for
hypoglycemic unawareness they shouldnt aim for
intense blood glucose control.
20Hypoglycemia Care
- Get a blood glucose immediately.
- Get patients history if possible and physical
examination. - Try and find out what caused the hypoglycemia
after you correct the problem. - To the conscious patient, give 15-20g of a
quick-acting carb (Ex 6-8 oz Coke, 8-10 Life
Savers, a tablespoon of syrup or honey, or
frosting in a tube.) Avoid sweet foods that also
contain fat. Monitor blood glucose. - Repeat the treatment in 15 minutes if first
treatment didnt work. - Give more food of longer-acting carbs (Ex slice
of bread, crackers) after symptoms calm down. Be
careful not to overtreat! (Hyperglycemia!) - If patient outside hospital, notify HCP
immediately if symptoms dont subside after 2 or
3 administrations of quick-acting carbs. - Worse symptoms or comatose patient-SQ or IM
(quickest in deltoid) injection of 1 mg glucagon.
Watch for rebound effect of hypoglycemia.-IV
administration of 50 ml 50 glucose.
Once blood glucose is gt70 mg/dl the patient
should eat the regularly scheduled meal or snack
to keep hypoglycemia from happening again.
21Chronic Complications
- End-organ disease from chronic hyperglycemia.
Possible causes include-The accumulation of
damaging by-products of glucose metabolism, like
sorbitol, which is associated with nerve cell
damage.-Abnormal glucose molecules forming in
the basement membrane of small blood vessels like
those that circulate to the eye and
kidney.-Derangement of red blood cell function
that leads to a decrease in oxygen to tissues. - Angiopathy-Blood vessel disease. -Estimated to
account for the majority of deaths from
diabetes.This chronic blood vessel dysfunction is
divided into two categories-Macrovascular
Complications-Microvascular Complications
22Angiopathy
- Macrovascular Complications-Diseases of the
large and medium-sized blood vessels that happen
more often and earlier in people with diabetes.
-Even though the formation of atherosclerotic
plaque is believed to have a genetic origin, its
development appears related to the altered lipid
metabolism common in diabetes. -Tight glucose
control may help. -These diseases include
cerebrovascular, cardiovascular, and peripheral
vascular diseases. -Risk factors are smoking,
obesity, HTN, high fat intake, and sedentary
lifestyle. -Insulin resistance plays an
important role in the development of CV disease
and is implicated in the pathogenesis of
essential HTN and dyslipidemia.-The term insulin
resistance syndrome is clinically associated with
insulin resistance, HTN, increased
very-low-density lipoprotein (VLDL) and decreased
high-density lipoprotein (HDL).
- Microvascular Complications-Results from
thickening of the vessel membranes in the
capillaries and arterioles in response to
conditions of chronic hyperglycemia. -Differs
from macrovascular in that it is specific to
diabetes. -Areas most affected are the eyes
(retinopathy), the kidneys (nephropathy), and the
skin (dermopathy). -Thickening of cap basement
membrane has been found in some people.
-Clinical manifestations usually dont appear
until 10-20 years following the onset of
diabetes.
23Diabetic Retinopathy
- This refers to the process of microvascular
damage to the retina because of chronic
hyperglycemia in patients with diabetes. Very
common in people who have had diabetes for a long
time, more-so in those with Type I.
Nonproliferative Proliferative
-Most common form.-Partial occlusion of the small blood vessels in the retina causes microaneurysms in the capillary walls.-Capillary fluid may leak out causing retinal edema, hard exudates, and intraretinal hemorrhaging. If the macula is involved, vision may be affected. Treatment-Early photocoagulation of the retina. -Cryotherapy-Vitrectomy -Most severe form.-Involves the retina and the vitreous. -Neovascularization-When the body tries to compensate by forming new blood vessels to supply the retina the blood. -Glaucoma may result from this. -These new vessels are extremely fragile and hemorrhage easily which produces vitreous contraction. -Light cant reach the retina.-Patient sees black or red spots or lines. -Complete retinal detachment can occur. -If the macula is involved, vision is lost. -Without treatment, more than half the patients will go blind.
24Nephropathy
- A microvascular complication that is associated
with damage to the small blood vessels that
supply glomeruli of the kidney. - Leading cause of end-stage renal disease in the
U.S.A! - Risk about the same in either Type I or Type II.
- Risk factors for diabetic nephropathy are HTN,
genetic predisposition, smoking, and chronic
hyperglycemia. - Kidney disease can be reduced a lot with
maintenance of near-normal blood glucose. - HTN can speed up nephropathy. Patient may be put
on ACE inhibitors (ex.lisinopril). Patient may be
put on ACE inhibitors even if theyre not
hypertensive. - This is because ACE inhibitors have a protective
effect on the kidney. - Angiotensin II receptor agonists (losartan) may
also be used to protect the kidney. - Need yearly screening for presence of
microalbuminuria (MAU) in the urine.
25Neuropathy
- This is nerve damage that is associated with
diabetes. About 60-70 of diabetics have some
degree of neuropathy. - Most common is sensory neuropathy which can lead
to the loss of sensation in the lower
extremities. The other major classification is
autonomic neuropathy. - Coupled with other factors, this increases the
risk of complications that can result in a lower
limb amputation. - May be caused by an accumulation of sorbitol and
fructose in the nerves from persistant
hyperglycemia. - Sensory Characteristics besides loss of feeling
(numbness) are abnormal sensations (feeling like
youre walking on pillows), pain, and
paresthesias. - Pain usually described as burning, crushing,
cramping, or tearing. - Control of blood glucose is the only treatment.
- Drug therapy Topical creams (capsaicin),
antiseizure meds (gabapentin), Tricyclic
antidepressants (to control the symptoms). - Autonomic Bowel incontinence and diarrhea,
urinary retention complication is delayed
gastric emptying. Can trigger hyperglycemia by
delaying food absorption! - Sexual dysfunction in men and women. Is the
problem organic or physiologic? - Patient may need to learn self-catheterization.
26Complications of the feet and lower extremities
- The most common cause of hospitalization in the
person with diabetes. - Results from a combination of macrovascular and
microvascular diseases. - Sensory neuropathy (remember, loss of feeling)
and peripheral vascular disease are risk factors,
along with clotting problems, impaired immunity,
and autonomic neuropathy. - Smoking and PVD increase the risk for amputation.
- Reduce and manage risk factors, especially
smoking, high cholesterol, and HTN. - LOPS-Loss of Protective Sensation. Person may not
know they hurt their foot! Need to check daily! - Neuropathic arthropathy (Charcot foot) Ankle and
foot changes abnormal distribution of weight
over the foot. Increases chance of foot ulcers
from new pressure points. Neuropathic ulcers look
like a BB shot or punched out. - Danger of infection!
27Foot Care!
- Use lanolin on feet to keep from drying but not
between toes. - Use mild foot powder for sweaty feet.
- Do not use OTC remedies to get rid of calluses or
corns. - Do not use iodine, rubbing alcohol, or strong
adhesives on cuts. - Report skin infections or sores that dont heal
to HCP right away! - Cut toenails straight across. Do not cut down
corners. - Overlapping toes? Use lambs wool to separate
them. - Dont wear open-toe, open-heel, or high-heel
shoes. Leather shoes are preferred over plastic. - Wear cotton or wool socks. If you wear colored,
make sure theyre colorfast. - Dont wear clothing that leaves fabric
impressions-Circulation! - Dont use hot water bottles or heating pads to
warm the feet.
- Wash feet daily with mild soap and warm water.
- Test water temp with hands first!
- Pat them dry gently, especially between the toes.
- Examine daily for cuts, blisters, swelling, and
tender areas. Dont forget to look on the
bottoms! - Protect against frostbite.
- Exercise feet daily by walking or flexing. Dont
sit or stand for long time or cross legs.
Dont go barefoot!
28Skin Complications
- Diabetic dermopathy
- Necrobiosis lipoidica diabeticorum-believed to
be a result of the breakdown of collagen in the
skin. - Shin spots
- Mechanisms for susceptibility to infection
include defective mobilization of inflammatory
cells and impaired phagocytosis by neutrophils or
monocytes. - May see recurring or persistent infections,
boils, and furuncles. - LOS (loss of sensation) may delay detection of
infection. - Need prompt, vigorous, antibiotic therapy.
29Nutritional Therapy for Diabetes
- Type I-May need to increase calories to gain
weightand restore body tissues. -Glucose
control is via diet and insulin.-Equal
distribution of carbs via meals or adjusting the
amount of carbs for insulin activity.-Consistency
needed for glucose control.-Timing of meals
very important for NPH/lente insulin programs.
Need flexibility with multidose rapid-acting
insulin.-Snacks throughout day and at bedtime
are frequently needed.-Need 20 g/hr of carbs for
regular physical activity.
- Type II-Need to reduce caloric intake lose
weight. -Control of diet may be only thing
necessary for glucose control.-Need equal
distribution. Best to have low-fat diet. Need
consistency of carbs during meals. -Consistency
necessary for weight loss and controlling blood
glucose levels. -Timing of meals would be good
but not absolutely essential.-Snacks throughout
the day and at bedtime not recommended. -May
need nutritional supplements of patients
diabetes is controlled with sulfonylurea or
insulin.
30Food Groups
- Protein-15 to 20. If the patient has
nephropathy(disorder of the kidney). - Fat-Less than 10 from saturated fat. Cholesterol
needs to be lower than 300 mg/day. - Carbohydrates-Should make up the remaining
necessary calories after meeting protein and fat
needs. Should be whole grains, and fresh
vegetables and fruit. Simple sugar is acceptable
in small amounts when counted as part of the carb
intake. - Sodium-Should be lower than 2400 mg/day.
- Fiber-25 to 30 g/day needed from a variety of
food sources.
Meal planning Learn the plate method, the
amount of necessary food that will fill a 9-inch
plate.
31Alcohol?
- Its high in calories and has no nutritional
value. It also promotes hypertriglyceridemia (an
excess of glycerides, especially triglycerides,
in the blood.) - Had really bad effects on the liver. Alcohol can
inhibit glucose production and cause severe
hypoglycemia in patients who are on insulin or
oral hypoglycemic agents that increase insuline
secretion. - It can increase the risk of lactic acidosis.
- If glucose is well-controlled then alcohol could
possibly be safe if glucose under control and if
the patient is not on meds that can cause
reactions. - If youre going to drink alcohol, eat carbs!
- Drink with food, use sugar-free mixes, and drink
dry, light wines.
32Exercise
- Increases insulin sensitivity and can help lower
blood glucose levels. - May also help lower triglyceride and LDL
cholesterol levels, lower blood pressure, and
improve circulation. - Schedule exercises about 1 hour after a meal if
on meds that cause hypoglycemia or have a 10-15g
carbohydrate snack before exercising. - If on meds that place the patient at risk or if
already hypoglycemic, advise to carry glucose
tablets, hard candy like Life Savers, or frosting
in a tube, when exercising.
- Strenuous exercise can be perceived by the
body as stress so dont overdo it. - Dont exercise at the time of the day when
insulin action is waning.
33Patient Teaching
- Monitor blood glucose at home and record in log.
- Take insulin and oral meds as prescribed.
- Get a HgB1c blood test every 3-6 months.
- Carry some form of glucose at all times to treat
hypoglycemia. - Instruct family members in giving glucagon in
case of emergencies. - Dont skip doses of insulin, even if sick.
- Dont run out of insulin!
- Dont get involved in fad diets.
- Dont rub area where injection was given.
- Follow diet, regular meals-regular times.
- Learn cholesterol level and dont eat fried
foods. - Dont exercise if blood glucose levels very high.
- Get annual eye exam.
- Get annual urine protein exam.
- Treat other medical problems, especially high
blood pressure. - Know the symptoms of hyperglycemia and
hypoglycemia. - Quit smoking.
Carry Identification that says you have Diabetes!
34Diabetes Links
- http//www.diabetes.org
- http//www.diabetes.com
- http//www.cdc.gov/diabetes/
- http//www.diabetes.ca/Section_Main/welcome.asp
- http//www.niddk.nih.gov/
- http//www.jdf.org/