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127 Cards in this Set
- Front
- Back
continuous glucose monitoring system (CGMS)
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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. |
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continuous subcutaneous insulin infusion, insulin pump
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a small device that delivers insulin on a 24-hour basis as basal insulin
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diabetes
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a group of metabolic diseases characterized by hyperglycemia resulting from defects in insulin secretion, insulin action, or both
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diabetic ketoacidosis (DKA)
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a metabolic derangement in type 1 diabetes that results from a deficiency of insulin; highly acidic ketone bodies are formed, resulting in acidosis
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fasting plasma glucose (FPG)
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blood glucose determination obtained in the laboratory after fasting for at least 8 hours
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gestational diabetes
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any degree of glucose intolerance with its onset during pregnancy
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glycated hemoglobin (glycosylated hemoglobin, Hgb A 1Cor A1C)
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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)
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glycemic index
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the amount a given food increases the blood glucose level compared with an equivalent amount of glucose
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hyperglycemia
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elevated blood glucose level
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hyperglycemic hyperosmolar syndrome (HHS)
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a metabolic disorder of type 2 diabetes resulting from a relative insulin deficiency initiated by an illness that raises the demand for insulin
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hypoglycemia
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low blood glucose level
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impaired fasting glucose (IFG), impaired glucose tolerance (IGT)
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a metabolic stage intermediate between normal glucose homeostasis and diabetes; referred to as prediabetes
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insulin
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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
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ketone
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a highly acidic substance formed when the liver breaks down free fatty acids in the absence of insulin
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medical nutrition therapy (MNT)
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nutritional therapy prescribed for management of diabetes that usually is administered by a registered dietician
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nephropathy
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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
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neuropathy
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a long-term complication of diabetes resulting from damage to the nerve cell
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prediabetes
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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
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retinopathy
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a complication of diabetes in which the small blood vessels that nourish the retina in the eye are damaged
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self-monitoring of blood glucose (SMBG)
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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. |
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sulfonylureas
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a class of oral antidiabetic medication for treating type 2 diabetes; stimulates insulin secretion and insulin action
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thiazolidinediones
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a class of oral antidiabetic medications that reduces insulin resistance in target tissues, enhancing insulin action without directly stimulating insulin secretion
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type I diabetes
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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
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type 2 diabetes
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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
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25.8 million
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It is estimated that more than ________ people in the United States have diabetes, although almost one third of these cases are undiagnosed.
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Minority
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__________ populations are disproportionately affected by diabetes.
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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
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diabetes
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In the United States, ________ is the leading cause of nontraumatic amputations, blindness in working-age adults, and end-stage kidney disease (ESKD).
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death
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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.
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Hospitalization
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___________ rates for people with diabetes are 2.4 times greater for adults and 5.3 times greater for children than for the general population.
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insulin
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When a person eats a meal, ________ secretion increases and moves glucose from the blood into muscle, liver, and fat cells.
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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 |
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Risk Factors: Diabetes
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• 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 |
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Type 1
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5%–10% of all diabetes; previously classified as juvenile diabetes, juvenile-onset diabetes, ketosis-prone diabetes, brittle diabetes, and insulin-dependent diabetes mellitus [IDDM]
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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 |
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Type 2
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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]
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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 |
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Diabetes associated with other conditions or syndromes (previously classified as secondary diabetes)
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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. |
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Gestational diabetes
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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 |
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Gestational diabetes
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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 |
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Prediabetes
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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 |
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Prediabetes
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previously classified as previous abnormality of glucose tolerance [PrevAGT]
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basal
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During fasting periods (between meals and overnight), the pancreas continuously releases a small amount of insulin (________insulin)
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glucagon
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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.
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glycogen; amino acids
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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)
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beta-cell
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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.
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postprandial
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glucose derived from food cannot be stored in the liver but instead remains in the bloodstream, contributes to ________ (after meals) hyperglycemia.
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180 to 200 mg/dL (9.9 to 11.1 mmol/L)
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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).
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osmotic diuresis
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When excess glucose is excreted in the urine, it is accompanied by excessive loss of fluids and electrolytes. This is called _______.
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glycogenolysis
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breakdown of stored glucose
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gluconeogenesis
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production of new glucose from amino acids and other substrates
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hyperglycemia
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Because insulin normally inhibits glycogenolysis and gluconeogenesis, these processes occur in an unrestrained fashion in people with insulin deficiency and contribute further to _______ .
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metabolic derangements
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The three major __________ _______ are hyperglycemia, ketosis, and metabolic acidosis
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Diabetic ketoacidosis (DKA)
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____________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.
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type 2
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The two main problems related to insulin in __________diabetes are insulin resistance and impaired insulin secretion.
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Insulin resistance
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___________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
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metabolic syndrome
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Insulin resistance may also lead to_______________, which is a constellation of symptoms including hypertension, hypercholesterolemia, abdominal obesity, and other abnormities
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impaired insulin secretion
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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.
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hyperglycemic hyperosmolar syndrome (HHS)
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DKA does not typically occur in type 2 diabetes. However, uncontrolled type 2 diabetes may lead to another acute problem— _____________.
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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).
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placental
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Hyperglycemia develops during pregnancy because of the secretion of ____________ hormones, which causes insulin resistance.
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Gestational diabetes
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occurs in as many as 18% of pregnant women and increases their risk for hypertensive disorders during pregnancy
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24 and 28
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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.
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Low-risk women
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_________ 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 (
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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
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Polyuria
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increased urination; occurs as a result of the excess loss of fluid associated with osmotic diuresis
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polydipsia
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increased thirst; occurs as a result of the excess loss of fluid associated with osmotic diuresis
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polyphagia
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increased appetite; results from the catabolic state induced by insulin deficiency and the breakdown of proteins and fats
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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 |
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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.
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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.
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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.
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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.
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glucose tolerance
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A________ test is more effective in diagnosis than urine testing for glucose in older patients due to the higher renal threshold for glucose
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insulin
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The main goal of diabetes treatment is to normalize __________activity and blood glucose levels to reduce the development of vascular and neuropathic complications.
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Diabetes Laboratory Examination
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• Hgb A1C (A1C) • Fasting lipid profile • Test for microalbuminuria • Serum creatinine level • Urinalysis • Electrocardiogram |
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Diabetes: Need for Referrals
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• Ophthalmologist • Podiatrist • Dietitian • Diabetes educator • Others if indicated |
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Diabetes: Physical Examination
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• 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 |
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euglycemia
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The therapeutic goal for diabetes management is to achieve normal blood glucose levels, or _________, without hypoglycemia while maintaining a high quality of life.
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Diabetes management
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__________ has five components: nutritional therapy, exercise, monitoring, pharmacologic therapy, and education.
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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 |
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25 to 29 |
overweight is considered to be a BMI of _____ to _______.
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30 |
obesity is defined as 20% above ideal body weight or a BMI equal to or greater than ____.
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calories
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A meal plan for diabetes focuses on the percentages of ________ that come from carbohydrates, proteins, and fats.
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carbohydrate
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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
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whole grains
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The majority of the selections for carbohydrates should come from _________ .
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300 mg/day
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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
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kidney disease.
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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 ________.
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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
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Soluble fiber
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__________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.
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Insoluble fiber
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___________ 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.
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starchy
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Combining __________ foods with protein- and fat-containing foods tends to slow their absorption and lower the glycemic index.
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raw and whole
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In general, eating foods that are_______ & _______results in a lower glycemic index than eating chopped, puréed, or cooked foods (except meat).
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glycemic index
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Eating whole fruit instead of drinking juice decreases the _________ , because fiber in the fruit slows absorption.
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sugars
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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.
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DKA
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Alcohol is absorbed before other nutrients and does not require insulin for absorption. Large amounts can be converted to fats, increasing the risk for_______ .
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hypoglycemia
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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)
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insulin secretagogues
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medications that increase the secretion of insulin by the pancreas
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hypoglycemia
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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 _______ .
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one; two |
Moderate intake is considered to be __ alcoholic beverage per day for women and __ per day for men.
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sorbitol
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Sweeteners containing ___________may have a laxative effect.
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Nonnutritive
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________ 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.
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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. |
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stress
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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.
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250 mg/dL
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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.
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insulin
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The physiologic decrease in circulating insulin that normally occurs with exercise cannot occur in patients treated with ____ .
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15-g
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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.
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hypoglycemia
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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.
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food
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Patients with type 2 diabetes who are not taking insulin or an oral agent may not need extra _____before exercise.
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Physical fitness
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_________ 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
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Plasma
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_______ 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.
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SMBG
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For patients not taking insulin, ________is helpful for monitoring the effectiveness of exercise, diet, and oral antidiabetic agents.
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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
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before |
To evaluate basal insulin and determine bolus insulin doses, testing is performed ______ meals.
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after
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To determine bolus doses of regular or rapid-acting insulin (lispro [Humalog], aspart [NovoLog], or glulisine [Apidra]), SMBG testing is done 2 hours ______ meals.
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type 2
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Patients with ___________ diabetes are encouraged to test daily before and 2 hours after the largest meal of the day until stabilized.
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3 am
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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.
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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
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120 DAYS |
This complex (hemoglobin attached to the glucose) is permanent and lasts for the life of an individual red blood cell, approximately _________ days.
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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 _____.
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Ketones
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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. |
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purple
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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.
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acetone |
One of the ketone bodies is called _______, and this term is frequently used interchangeably with the term ketone
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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.
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exogenous insulin
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In type 1 diabetes,_________must be administered for life because the body loses the ability to produce insulin.
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long-term
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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.
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Human insulins
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___________ are produced by recombinant deoxyribonucleic acid (DNA) technology and are the only type of insulin available in the United States.
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