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127 Cards in this Set

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continuous glucose monitoring system (CGMS)
a device used to continuously monitor blood glucose levels;

A sensor attached to an infusion set, which is similar to an insulin pump infusion set, is inserted subcutaneously in the abdomen and connected to the device worn on the patient’s clothing or placed in a pocket.

continuous subcutaneous insulin infusion, insulin pump
a small device that delivers insulin on a 24-hour basis as basal insulin
diabetes
a group of metabolic diseases characterized by hyperglycemia resulting from defects in insulin secretion, insulin action, or both
diabetic ketoacidosis (DKA)
a metabolic derangement in type 1 diabetes that results from a deficiency of insulin; highly acidic ketone bodies are formed, resulting in acidosis
fasting plasma glucose (FPG)
blood glucose determination obtained in the laboratory after fasting for at least 8 hours
gestational diabetes
any degree of glucose intolerance with its onset during pregnancy
glycated hemoglobin (glycosylated hemoglobin, Hgb A 1Cor A1C)
a measure of glucose control that is a result of glucose molecule attaching to hemoglobin for the life of the red blood cell (120 days)
glycemic index
the amount a given food increases the blood glucose level compared with an equivalent amount of glucose
hyperglycemia
elevated blood glucose level
hyperglycemic hyperosmolar syndrome (HHS)
a metabolic disorder of type 2 diabetes resulting from a relative insulin deficiency initiated by an illness that raises the demand for insulin
hypoglycemia
low blood glucose level
impaired fasting glucose (IFG), impaired glucose tolerance (IGT)
a metabolic stage intermediate between normal glucose homeostasis and diabetes; referred to as prediabetes
insulin
a hormone secreted by the beta cells of the islets of Langerhans of the pancreas that is necessary for the metabolism of carbohydrates, proteins, and fats; a deficiency of insulin results in diabetes
ketone
a highly acidic substance formed when the liver breaks down free fatty acids in the absence of insulin
medical nutrition therapy (MNT)
nutritional therapy prescribed for management of diabetes that usually is administered by a registered dietician
nephropathy
a long-term complication of diabetes in which the kidney cells are damaged; characterized by microalbuminuria in early stages and progressing to endstage kidney disease
neuropathy
a long-term complication of diabetes resulting from damage to the nerve cell
prediabetes
impaired glucose metabolism in which blood glucose concentrations fall between normal levels and those considered diagnostic for diabetes; includes impaired fasting glucose and impaired glucose tolerance, not clinical entities in their own right but risk factors for future diabetes and cardiovascular disease
retinopathy
a complication of diabetes in which the small blood vessels that nourish the retina in the eye are damaged
self-monitoring of blood glucose (SMBG)

a method of capillary blood glucose testing in which the patient pricks his or her finger and applies a drop of blood to a test strip that is read by a meter.

sulfonylureas
a class of oral antidiabetic medication for treating type 2 diabetes; stimulates insulin secretion and insulin action
thiazolidinediones
a class of oral antidiabetic medications that reduces insulin resistance in target tissues, enhancing insulin action without directly stimulating insulin secretion
type I diabetes
a metabolic disorder characterized by an absence of insulin production and secretion from autoimmune destruction of the beta cells of the islets of Langerhans in the pancreas; formerly called insulindependent diabetes, or juvenile diabetes
type 2 diabetes
a metabolic disorder characterized by the relative deficiency of insulin production and a decreased insulin action and increased insulin resistance; formerly called non–insulin-dependent diabetes, and/ or adult-onset diabetes
25.8 million
It is estimated that more than ________ people in the United States have diabetes, although almost one third of these cases are undiagnosed.
Minority
__________ populations are disproportionately affected by diabetes.

African Americans; Native Americans; Hispanic origin

______ Americans and members of other racial and ethnic groups (_______ Americans and persons of _________ origin) are more likely to develop diabetes, are at greater risk for many of the complications, and have higher death rates due to diabetes
diabetes
In the United States, ________ is the leading cause of nontraumatic amputations, blindness in working-age adults, and end-stage kidney disease (ESKD).
death
Diabetes is a leading cause of _________ from disease, primarily because of the high rate of cardiovascular disease (myocardial infarction [MI], stroke, and peripheral vascular disease) among people with diabetes.
Hospitalization
___________ rates for people with diabetes are 2.4 times greater for adults and 5.3 times greater for children than for the general population.
insulin
When a person eats a meal, ________ secretion increases and moves glucose from the blood into muscle, liver, and fat cells.

insulin function in cells

• Transports and metabolizes glucose for energy


• Stimulates storage of glucose in the liver and muscle (in the form of glycogen)


• Signals the liver to stop the release of glucose


• Enhances storage of dietary fat in adipose tissue


• Accelerates transport of amino acids (derived from dietary protein) into cells


• Insulin also inhibits the breakdown of stored glucose, protein, and fat

Risk Factors: Diabetes

• Family history of diabetes


• Obesity (i.e., ≥20% desired weight or BMI ≥30 kg/m2)


• Race/ethnicity (e.g., African Americans, Hispanic Americans, Native Americans, Asian Americans, Pacific Islanders)


• Age ≥45 years


• Previously identified impaired fasting glucose or impaired glucose tolerance


• Hypertension (≥140/90 mm Hg)


• High-density lipoprotein (HDL) cholesterol level ≤35 mg/dL and/or triglyceride level ≥250 mg/dL


• History of gestational diabetes or delivery of a baby over 9 lb

Type 1
5%–10% of all diabetes; previously classified as juvenile diabetes, juvenile-onset diabetes, ketosis-prone diabetes, brittle diabetes, and insulin-dependent diabetes mellitus [IDDM]

Type 1

Onset any age, but usually young (<30 y)

Usually thin at diagnosis; recent weight loss


Etiology includes genetic, immunologic, and environmental factors (e.g., virus)


Often have islet cell antibodies


Often have antibodies to insulin even before insulin treatment


Little or no endogenous insulin


Need exogenous insulin to preserve life


Ketosis prone when insulin absent


Acute complication of hyperglycemia: diabetic ketoacidosis

Type 2
90%–95% of all diabetes: obese—80% of type 2, nonobese—20% of type 2; previously classified as adult-onset diabetes, maturity-onset diabetes, ketosis-resistant diabetes, stable diabetes, and non–insulin-dependent diabetes mellitus [NIDDM]

Type 2

Onset any age, usually >30 y

Usually obese at diagnosis


Causes include obesity, heredity, and environmental factors


No islet cell antibodies


Decrease in endogenous insulin, or increased with insulin resistance


Most patients can control blood glucose through weight loss if obese


Oral antidiabetic agents may improve blood glucose levels if dietary modification and exercise are unsuccessful


May need insulin on a short- or long-term basis to prevent hyperglycemia


Ketosis uncommon, except in stress or infection


Acute complication: hyperglycemic hyperosmolar syndrome

Diabetes associated with other conditions or syndromes (previously classified as secondary diabetes)
Accompanied by conditions known or suspected to cause the disease: pancreatic diseases, hormonal abnormalities, medications such as corticosteroids and estrogen-containing preparations

Depending on the ability of the pancreas to produce insulin, the patient may require treatment with oral antidiabetic agents or insulin.

Gestational diabetes
Onset during pregnancy, usually in the 2nd or 3rd trimester

Due to hormones secreted by the placenta, which inhibit the action of insulin


Above-normal risk for perinatal complications, especially macrosomia (abnormally large babies)


Treated with diet and, if needed, insulin to strictly maintain normal blood glucose levels


Occurs in about 2%–5% of all pregnancies

Gestational diabetes

Glucose intolerance transitory but may recur:


• In subsequent pregnancies


• 30%–40% will develop overt diabetes (usually type 2) within 10 years (especially if obese)


Risk factors include obesity, age >30 y, family history of diabetes, previous large babies (>9 lb)


Screening tests (glucose challenge test) should be performed on all pregnant women between 24 and 28 weeks of gestation


Should be screened for diabetes periodically

Prediabetes
Previous history of hyperglycemia (e.g., during pregnancy or illness)

Current normal glucose metabolism


Impaired glucose tolerance or impaired fasting glucose screening after age 40 years if there is a family history of diabetes or if symptomatic


Encourage ideal body weight, because loss of 10–15 lb may improve glycemic control

Prediabetes
previously classified as previous abnormality of glucose tolerance [PrevAGT]
basal
During fasting periods (between meals and overnight), the pancreas continuously releases a small amount of insulin (________insulin)
glucagon
another pancreatic hormone called _______ (secreted by the alpha cells of the islets of Langerhans) is released when blood glucose levels decrease, which stimulates the liver to release stored glucose.
glycogen; amino acids
Initially, the liver produces glucose through the breakdown of _________ (glycogenolysis). After 8 to 12 hours without food, the liver forms glucose from the breakdown of noncarbohydrate substances, including ________ (gluconeogenesis)
beta-cell
Combined genetic, immunologic, and possibly environmental (e.g., viral) factors are thought to contribute to _________ destruction, which results in decreased insulin production, unchecked glucose production by the liver, and fasting hyperglycemia.
postprandial
glucose derived from food cannot be stored in the liver but instead remains in the bloodstream, contributes to ________ (after meals) hyperglycemia.
180 to 200 mg/dL (9.9 to 11.1 mmol/L)
If the concentration of glucose in the blood exceeds the renal threshold for glucose, usually ____ to ______ mg/dL (____ to ______ mmol/L), the kidneys may not reabsorb all of the filtered glucose; the glucose then appears in the urine (glycosuria).
osmotic diuresis
When excess glucose is excreted in the urine, it is accompanied by excessive loss of fluids and electrolytes. This is called _______.
glycogenolysis
breakdown of stored glucose
gluconeogenesis
production of new glucose from amino acids and other substrates
hyperglycemia
Because insulin normally inhibits glycogenolysis and gluconeogenesis, these processes occur in an unrestrained fashion in people with insulin deficiency and contribute further to _______ .
metabolic derangements
The three major __________ _______ are hyperglycemia, ketosis, and metabolic acidosis
Diabetic ketoacidosis (DKA)
____________is commonly preceded by a day or more of polyuria, polydipsia, nausea, vomiting, and fatigue with eventual stupor and coma if not treated. The breath has a characteristic fruity odor due to the presence of ketoacids.
type 2
The two main problems related to insulin in __________diabetes are insulin resistance and impaired insulin secretion.
Insulin resistance
___________refers to a decreased tissue sensitivity to insulin. Normally, insulin binds to special receptors on cell surfaces and initiates a series of reactions involved in glucose metabolism. In type 2 diabetes, these intracellular reactions are diminished, making insulin less effective at stimulating glucose uptake by the tissues and at regulating glucose release by the liver
metabolic syndrome
Insulin resistance may also lead to_______________, which is a constellation of symptoms including hypertension, hypercholesterolemia, abdominal obesity, and other abnormities
impaired insulin secretion
Despite the impaired ___________, that is characteristic of type 2 diabetes, there is enough insulin present to prevent the breakdown of fat and the accompanying production of ketone bodies. Therefore, DKA does not typically occur in type 2 diabetes.
hyperglycemic hyperosmolar syndrome (HHS)
DKA does not typically occur in type 2 diabetes. However, uncontrolled type 2 diabetes may lead to another acute problem— _____________.

Type 2 diabetes symptoms

If the patient experiences symptoms, they are frequently mild and may include fatigue, irritability, polyuria, polydipsia, poorly healing skin wounds, vaginal infections, or blurred vision (if glucose levels are very high).
placental
Hyperglycemia develops during pregnancy because of the secretion of ____________ hormones, which causes insulin resistance.
Gestational diabetes
occurs in as many as 18% of pregnant women and increases their risk for hypertensive disorders during pregnancy
24 and 28
If the high-risk women do not have gestational diabetes at initial screening, they should be retested between ____ and ____weeks of gestation, as well as all women with average risk.
Low-risk women
_________ are those who meet all of the following criteria: age younger than 25 years, normal weight before pregnancy, member of an ethnic group with low prevalence of gestational diabetes, no history of abnormal glucose tolerance, no known history of diabetes in first-degree relatives, and no history of poor obstetric outcome (
105 mg/dL (5.8 mmol/L)

130 mg/dL (7.2 mmol/L)

Goals for blood glucose levels during pregnancy are_____ mg/dL (5.8 mmol/L) or less before meals and________ mg/dL (7.2 mmol/L) or less 2 hours after meals
Polyuria
increased urination; occurs as a result of the excess loss of fluid associated with osmotic diuresis
polydipsia
increased thirst; occurs as a result of the excess loss of fluid associated with osmotic diuresis
polyphagia
increased appetite; results from the catabolic state induced by insulin deficiency and the breakdown of proteins and fats

Diabetes manifestations

polyuria, polydipsia, polyphagia


fatigue & weakness


sudden vision changes


tingling/numbness in hands or feet


dry skin


lesions or wounds that are slow to heal


recurrent infections

Onset of type 1 diabetes

The onset of _________ diabetes may also be associated with sudden weight loss or nausea, vomiting, or abdominal pains, if DKA has developed.

Criteria for diagnosis of diabetes

Symptoms of diabetes plus casual plasma glucose concentration equal to or greater than 200 mg/dL (11.1 mmol/L). Casual is defined as any time of day without regard to time since last meal. The classic symptoms of diabetes include polyuria, polydipsia, and unexplained weight loss.

Criteria for diagnosis of diabetes

Fasting plasma glucose greater than or equal to 126 mg/dL (7.0 mmol/L). Fasting is defined as no caloric intake for at least 8 hours.

Criteria for diagnosis of diabetes

Two-hour postload glucose equal to or greater than 200 mg/dL (11.1 mmol/L) during an oral glucose tolerance test. The test should be performed as described by the World Health Organization, using a glucose load containing the equivalent of 75 g anhydrous glucose dissolved in water.
glucose tolerance
A________ test is more effective in diagnosis than urine testing for glucose in older patients due to the higher renal threshold for glucose
insulin
The main goal of diabetes treatment is to normalize __________activity and blood glucose levels to reduce the development of vascular and neuropathic complications.
Diabetes Laboratory Examination

• Hgb A1C (A1C)


• Fasting lipid profile


• Test for microalbuminuria


• Serum creatinine level


• Urinalysis


• Electrocardiogram

Diabetes: Need for Referrals

• Ophthalmologist


• Podiatrist


• Dietitian


• Diabetes educator


• Others if indicated

Diabetes: Physical Examination

• Blood pressure (sitting and standing to detect orthostatic changes)


• Body mass index (height and weight)


• Funduscopic examination and visual acuity


• Foot examination (lesions, signs of infection, pulses)


• Skin examination (lesions and insulin injection sites)


• Neurologic examination


Vibratory and sensory examination using monofilament Deep tendon reflexes


• Oral examination

euglycemia
The therapeutic goal for diabetes management is to achieve normal blood glucose levels, or _________, without hypoglycemia while maintaining a high quality of life.
Diabetes management
__________ has five components: nutritional therapy, exercise, monitoring, pharmacologic therapy, and education.

Nutritional management of diabetes includes the following goals:


To achieve and maintain:

a. Blood glucose levels in the normal range or as close to normal as is safely possible


b. A lipid and lipoprotein profile that reduces the risk for vascular disease


c. Blood pressure levels in the normal range or as close to normal as is safely possible

25 to 29

overweight is considered to be a BMI of _____ to _______.

30

obesity is defined as 20% above ideal body weight or a BMI equal to or greater than ____.
calories
A meal plan for diabetes focuses on the percentages of ________ that come from carbohydrates, proteins, and fats.
carbohydrate
ADA and the Academy of Nutrition and Dietetics (formerly the American Dietetic Association) recommend that for all levels of caloric intake, 50% to 60% of calories should be derived from __________, 20% to 30% from fat, and the remaining 10% to 20% from protein
whole grains
The majority of the selections for carbohydrates should come from _________ .
300 mg/day
Additional recommendations include limiting the total intake of dietary cholesterol to less than______ mg/day. This approach may help reduce risk factors such as increased serum cholesterol levels
kidney disease.
The meal plan may include the use of some nonanimal sources of protein (e.g., legumes, whole grains) to help reduce saturated fat and cholesterol intake. In addition, the amount of protein intake may be reduced in patients with early signs of ________.

Fiber

Increased ________ in the diet may improve blood glucose levels, decrease the need for exogenous insulin, and lower total cholesterol and low-density lipoprotein levels in the blood
Soluble fiber
__________slows stomach emptying and the movement of food through the upper digestive tract. The potential glucose-lowering effect of fiber may be caused by the slower rate of glucose absorption from foods that contain _____ fiber.
Insoluble fiber
___________ is found in whole-grain breads and cereals and in some vegetables. This type of fiber along with soluble fiber increases satiety, which is helpful for weight loss. At least 25 g of fiber should be ingested daily.
starchy
Combining __________ foods with protein- and fat-containing foods tends to slow their absorption and lower the glycemic index.
raw and whole
In general, eating foods that are_______ & _______results in a lower glycemic index than eating chopped, puréed, or cooked foods (except meat).
glycemic index
Eating whole fruit instead of drinking juice decreases the _________ , because fiber in the fruit slows absorption.
sugars
Adding foods with _______ to the diet may result in a lower glycemic index if these foods are eaten with foods that are more slowly absorbed.
DKA
Alcohol is absorbed before other nutrients and does not require insulin for absorption. Large amounts can be converted to fats, increasing the risk for_______ .
hypoglycemia
A major danger of alcohol consumption by the patient with diabetes is ________, especially for patients who take insulin or insulin secretagogues (medications that increase the secretion of insulin by the pancreas)
insulin secretagogues
medications that increase the secretion of insulin by the pancreas
hypoglycemia
Alcohol may decrease the normal physiologic reactions in the body that produce glucose (gluconeogenesis). Therefore, if a patient with diabetes consumes alcohol on an empty stomach, there is an increased likelihood of _______ .

one; two

Moderate intake is considered to be __ alcoholic beverage per day for women and __ per day for men.
sorbitol
Sweeteners containing ___________may have a laxative effect.
Nonnutritive
________ sweeteners include saccharin, aspartame (NutraSweet), acesulfame-K (Sunett), and sucralose (Splenda), produce minimal or no elevation in blood glucose levels and have been approved by the U.S. Food and Drug Administration (FDA) as safe for people with diabetes.

General considerations for exercise in people with people with diabetes

• Exercise 3 times each week with no more than 2 consecutive days without exercise.


• Perform resistance training twice a week (for people with type 2 diabetes).


• Exercise at the same time of day (preferably when blood glucose levels are at their peak) and for the same duration each session.


• Use proper footwear and, if appropriate, other protective equipment (i.e., helmets for cycling).


• Avoid trauma to the lower extremities, especially in patients with numbness due to peripheral neuropathy.


• Inspect feet daily after exercise.


• Avoid exercise in extreme heat or cold.


• Avoid exercise during periods of poor metabolic control.

stress
An abnormal _________ test may indicate cardiac ischemia. Typically, an abnormal __________ test is followed by a cardiac catheterization and, in some cases, with an intervention such as angioplasty, stent placement, or cardiac surgery.
250 mg/dL
Patients who have blood glucose levels exceeding_______ mg/dL (14 mmol/L) and who have ketones in their urine should not begin exercising until the urine test results are negative for ketones and the blood glucose level is closer to normal.
insulin
The physiologic decrease in circulating insulin that normally occurs with exercise cannot occur in patients treated with ____ .
15-g
Initially, patients who require insulin should be taught to eat a ________ carbohydrate snack (a fruit exchange) or a snack of complex carbohydrates with a protein before engaging in moderate exercise to prevent unexpected hypoglycemia.
hypoglycemia
Another potential concern for patients who take insulin is __________ that occurs many hours after exercise. To avoid postexercise___________, especially after strenuous or prolonged exercise, the patient may need to eat a snack at the end of the exercise session and at bedtime and monitor the blood glucose level more frequently.
food
Patients with type 2 diabetes who are not taking insulin or an oral agent may not need extra _____before exercise.
Physical fitness
_________ in the older adult population with diabetes may lead to improved glycemic control, decreased risk for chronic vascular disease, and an improved quality of life
Plasma
_______ glucose values are 10% to 15% higher than whole blood glucose values, and it is crucial for patients with diabetes to know whether their monitor and strips provide whole blood or plasma results.
SMBG
For patients not taking insulin, ________is helpful for monitoring the effectiveness of exercise, diet, and oral antidiabetic agents.

SMBG

For patients with type 2 diabetes, ______ is recommended during periods of suspected hyperglycemia (e.g., illness) or hypoglycemia (e.g., unusual increased activity levels) and when the medication or dosage of medication is modified

before

To evaluate basal insulin and determine bolus insulin doses, testing is performed ______ meals.
after
To determine bolus doses of regular or rapid-acting insulin (lispro [Humalog], aspart [NovoLog], or glulisine [Apidra]), SMBG testing is done 2 hours ______ meals.
type 2
Patients with ___________ diabetes are encouraged to test daily before and 2 hours after the largest meal of the day until stabilized.
3 am
Patients who take insulin at bedtime or who use an insulin infusion pump should also test at _________ once a week to document that the blood glucose level is not decreasing during the night.

continuous glucose monitoring system (CGMS)

After 72 hours, the data from the device are downloaded, and blood glucose readings are analyzed. Although the _________ cannot be used for making decisions about specific insulin doses, it can be used to determine whether treatment is adequate over a 24-hour period. This device is most useful in patients with type 1 diabetes

120 DAYS

This complex (hemoglobin attached to the glucose) is permanent and lasts for the life of an individual red blood cell, approximately _________ days.

7%

Normal values typically range from 4% to 6% and indicate consistently near-normal blood glucose concentrations. The target range for people with diabetes is less than _____.
Ketones
are by-products of fat breakdown, and they accumulate in the blood and urine;

signal that there is a deficiency of insulin and control of type 1 diabetes is deteriorating.

purple
Most commonly, the patient uses a urine dipstick (Ketostix or Chemstrip uK) to detect ketonuria. The reagent pad on the strip turns _________ when ketones are present.

acetone

One of the ketone bodies is called _______, and this term is frequently used interchangeably with the term ketone

insulin

_____________ is secreted by the beta cells of the islets of Langerhans and lowers the blood glucose level after meals by facilitating the uptake and utilization of glucose by muscle, fat, and liver cells.
exogenous insulin
In type 1 diabetes,_________must be administered for life because the body loses the ability to produce insulin.
long-term
In type 2 diabetes, insulin may be necessary on a_______ basis to control glucose levels if meal planning and oral agents are ineffective or when insulin deficiency occurs.
Human insulins
___________ are produced by recombinant deoxyribonucleic acid (DNA) technology and are the only type of insulin available in the United States.