diabetes Flashcards
(1) Acinar cells 1.make up what percent of the pancreas? 2. secretes what? 3. via what duct?
(1) Acinar cells 1.make up what percent of the pancreas? --The exocrine portion of the pancreas accounting for 98- 99% of the pancreas weight. 2. secretes what? -- They are responsible for synthesizing and secreting digestive enzymes and bicarbonate into the pancreatic ducts to aid in digestion 3. via what duct? --through sphincter of oddi
objectives
- define glucagon, glycogenesis, lipogenesis, gluconeogenesis, glycogenolysis, and lipolysis.
- explain the causes and complications of diabetes mellitus, including the metabolic/physiologic implications of the disease process.
- recognize the cardiovascular issue sassociated with diabetes, particularly ANS neuropathy and CHF.
- differentiate the types of diabetes mellitus.
- discuss the perioperative management of the patient with DM, including BS management.
- describe the symptoms of and the treatment for diabetic ketoacidosis, hyperglycemic hyperosmolar nonketotic syndrome, and hypoglycemia.
- discuss various anitdiabetogenic agents for the patient with type I or type II diabetes and anesthetic implications of these medications.
- recognize the anesthetic implications for the diabetic patient.
(2)
Islet’s of Langerhans:
1. what is function?
2. makes up what percent of pancreas weight?
3. what is produced?
4. what controls (innervates) islets?
5. what is the path of endocrine hormones into general circulation?
(2)
Islet’s of Langerhans:
1. what is function?
– endocrine portion of panceras;
2. makes up what percent of pancreas weight?
– 1-2% of the pancreas weight. There are more than 1 million islets in a pancreas.
3. what is produced?
–Produces hormones that are secreted directly into the capillary blood vessels.
4. what controls (innervates) islets?
– Innervated by adrenergic and cholinergic fibers of the autonomic nervous system.
5. what is the path of endocrine hormones into general circulation?
– Each islet has an abundant blood supply → hepatic portal vein→ general circulation.
(3) define: 1. glucagon 2. glycogenesis 3. lipogenesis 4. gluconeogenesis 5. glycogenolysis 6. lipolysis
(3)
define:
1. glucagon
–glucagon- secreted by alpha (A) cells; it is a hormone for glucose release (opposite of insulin).
2. glycogenesis
–glyco-genesis-formation of glycogen (for storage)from glucose
3. lipogenesis
–lipo-genesis-storage of lipids
4. gluconeogenesis
– gluco-neo-genesis-the creation of glucose from lactate, pyruvate, amino acids, and glycerol in the liver
5. glycogenolysis
–glycogen-o-lysis-the breakdown of glycogen into glucose
6. lipolysis
– lipo-lysis-the breakdown of triglycerides into fatty acids and glycerols
(4)
1a. what causes diabetes type 1(what chromosome)?
1b. What age is onset?
1c. what happens in terms of insulin?
1d. What will be needed.
2. what causes diabetes type 2
2b. When is onset?
2c. what happens in terms of insulin?
(4)
1a. what causes diabetes type 1(what chromosome)?
- -most likely autoimmune etiology (destruction of cells of islets of langerhan d/t human lymphocyte antigen (HLA) on chromosome 6)
1b. What age is onset?
- - onset usually at puberty but can be prior to 20-40 yrs old, abrupt onset
1c. what happens in terms of insulin?
- - destruction of islets decreases insulin production
1d. What will be needed.
- - lifelong insulin replacement
2a. what causes diabetes type 2
- -caused by obesity and sedintary lifestyle
2b. When is onset?
- -type 2- late onset (usually after 40 y/o)
2c. what happens in terms of insulin?
- -insulin resesitance at receptor causes decreased uptake of insulin (and thus glucose) at skeletal muscle
(5)
complications of diabetes (CARDIOVASCULAR):
a) what vascular issues accompany diabetes?
b) this can lead to what cardiac issues (related to coronary vessels)?
c) what can this do diabetes do to the heart itself? ___% of ___ patients are diabetics.
d) what nerve condition caused by diabetes has severe cardiac manifestations?
e) why do diabetics develop feet problems?
f) in essence how are the vascular changes caused by diabetes classified?
(5)
complications of diabetes (CARDIOVASCULAR):
a) what vascular issues accompany diabetes?
–increased risk of thrombotic lesions (which increase risk of: nepropathy, atherosclerosis, stroke, retinopathy & CAD (which is the leading cause of diabetic death))
b) this can lead to what cardiac issues (related to coronary vessels)?
–higher disk of myocardial ischemia, MI, silent MI, increased infarct size in MI
c) what can this do diabetes do to the heart itself? ___% of ___ patients are diabetics.
–CHF/ diabeic cardiomyopathy. 35% of CHF paients are diabetics
d) what nerve condition caused by diabetes has severe cardiac manifestations?
– ANS neuropathy (cardiac manifestations)
e) why do diabetics develop feet problems?
–diabetes causes PVD (and PAD)
f) in essence how are the vascular changes caused by diabetes classified?
–vascular changes caused by diabetes are either micro or macrovascular changes
(6)
- what does insulin do?
2a. when is insulin production highest?
2b. Lowest?
2c. what about post prandial? - what works against insulin (counterregulatory hormones)?
- how much insulin is produced per hour and per day?
- what type of cells does insulin come from?
(6)
- what does insulin do?
- - insulin causes the storage of glucose, fats and amino acids until needed;
- -insulin is a hormone of growth (anabolic)
- -favors lipogenesis and inhibits lipolysis
2a. when is insulin production highest?
- - Insulin levels are highest in AM (0800)
2b. Lowest?
- -lowest between 12 & 4 pm
2c. what about post prandial?
- -insulin is highest 30-60 mintes after a meal(post prandial) - what works against insulin (counterregulatory hormones)?
- -counterregulatory hormones: glucagon, cortisol, growth hormone and epinephrine - how much insulin is produced per hour and per day?
- -insulin release: 1 unit for hour; increases 5-6 units after a meal for a total of 60 units daily. - what type of cells does insulin come from?
- - beta cells of langrahan
(7)
- what blood pressure medications should be used with diabetics?
- what medications are USUALLY avoided (but are used more frequently)?
- why?
(7)
1. what blood pressure medications should be used with diabetics?
–ACE inhibitors are usually used with diabetics
2. what medications are USUALLY avoided (but are used more frequently)?
–beta blockers had been avoided for a long time
3. why?
d/t blocking the s/s of hypoglycemia (tachycardia) and the fact that it may block beta cell function causing an alteration in glucose and lipid metabolism (blocks insulin causing increased blood glucose)
(8)
- define diabetes?
- what happens to cause diabetes (in the body)?
- how many types of diabetes are there and what are they?
(8)
1. define diabetes?
–a disease of glucose dysregulation and carbohydrate intolerance, associated with acute and long term, predictable systemic consequences which may significantly affet morbidity and mortality
2. what happens to cause diabetes (in the body)?
–a)when insulin production is low or absent
OR
b)the tissues become resistant to normal levels of insulin
OR
c) both decreased insulin production with increased resistance
3. how many types of diabetes are there and what are they?
–4 types-
-type 1 (insulin dependent)
-type 2 (non insulin dependent)
-gestational (during pregnancy)
-situational (d/t conditions such as pancreatitis, acromegaly, cystic fibrosis, pheochromocytosis, steroids)
(9)
- how many americans have diabetes?
- how many type 1 (%)?
- how many type 2 (%)?
(9)
- how many americans have diabetes?
- - 20 million - how many type 1 (%)?
- - 5-10% - how many type 2 (%)?
- -90% of diabetics are type 2 (50% of them don’t even know they have it)
(10)
- what is diabetic cardiomyopathy?
- what happens to the ventricles?
- is it eccentric or concentric?
- what is the goal of anesthesia of a patient with diabetic cardiomyopathy?
- when does diabetic cardiomyopathy develop?
(10)
- what is diabetic cardiomyopathy?
- -a form of heart failure (similar to alcoholic cardiomyopathy) that occurs independent of CAD, HTN or valvular disease; caused by hyperglycemia - what happens to the ventricles?
- -progressive ventricular relaxation causing DD (DIASTOLIC DYSFUNCTION) (d/t high filling pressures from stiffness of ventricles) –systolic function is preserved–dilated cardiomyopathy like alcohol related cardiomyopathy - is it eccentric or concentric?
- -diabetic cardiomyopathy is eccentric (in which the heart grows outward in size and the volume is enlarged-but it cannot contract as well). - what is the goal of anesthesia of a patient with diabetic cardiomyopathy?
- -goal of anesthesia is to prevent and treat hypertension (lower SVR allows for better ventricle emptying). - when does diabetic cardiomyopathy develop?
- - diabetic cardiomyopathy occurs 4-5 years after diagnosis
(11)
Complications of diabetes (AIRWAY):
1. what condition would cause a type 1 diabetic to be intubated with a glidescope?
1b. what test tests for this condition?
2. what condition would make intubating a type 2 diabetic difficult?
3. what condition should you consider when intubating a diabetic; and what should be done?
(11)
Complications of diabetes (AIRWAY):
1. what condition would cause a type 1 diabetic to be intubated with a glidescope?
–1/3 of type 1 diabetics are difficult to intubate d/t glycosylation of tissue proteins leading to stiff joint syndrome; especially atlanto-occipital joint (the joint between atlas of neck and occiput)
1b. what test tests for this condition?
–prayer sign
2. what condition would make intubating a type 2 diabetic difficult?
– obesity in type 2 diabetics makes intubation challenging
3. what condition should you consider when intubating a diabetic; and what should be done?
–gastroparesis in diabetics makes them an aspiration risk; give aspiration prophylaxis and consider RSI or awake intubation.
(12)
- what are microvascular changes?
- what are macrovascular changes?
- which type of diabetic (type 1 or 2) gets which type?
(12)
- what are microvascular changes?
- - microvascular changes affect the retina and kidney - what are macrovascular changes?
- - macrovascular changes affect the coronary and peripheral vasculature - which type of diabetic (type 1 or 2) gets which type?
- -type 1= microvascular; type 2=macrovascular (1 is smaller than 2; 1=micro & 2=macro)
(13)
- what are the side effects of diabetes (vascular)
- and integument
(13)
- what are the side effects of diabetes (vascular)
- -PVD (circulatory insuffeciency to feet and legs) - and integument.
- -delayed wound healing
(14) diabetics have how many "x" more of a chance of developing these? 1. atherosclerosis: 2. CVA 3. MI: 4. PVD: 5. CHF (male & female)
(14) diabetics have how many "x" more of a chance of developing these? 1. atherosclerosis: -- atherosclerosis: 2.5x 2. CVA --CVA: 2x 3. MI: -- MI: 2-10x 4. PVD: -- PVD: 5-10x 5. CHF (male & female) -- CHF: male=2x; female=5x
(15)
what are the neurological s/e of diabetes?
(15)
what are the neurological s/e of diabetes?
-ANS neuropathy
(16)
- ANS neuropathy is diagnosed how?
- what are the symptoms seen with this test?
(16)
- ANS neuropathy is diagnosed how?
- - diagnosed by abnormal CV results to reflex tests - what are the symptoms seen with this test?
- - symptoms seen:
a) orthostatic hypotension
b) resting tachycardia at fixed rate
c) absent beat to beat variability
d) excercise intolerance
(17)
- what are GU alterations with diabetes?
- what medications (for HTN) slow the progression of diabetic nephropathy
- what does that medicine cause regarding blood pressure
3b. what medication wont work? - what does the renal disease make the diabetic patient prone to?
(17)
- what are GU alterations with diabetes?
- -a) acute renal failure
- -b) end stage renal disease (ESRD)
- –type 1: 30%
- –type 2: 4-20% - what medications (for HTN) slow the progression of diabetic nephropathy
- -ace inhibitors - what does that medicine cause regarding blood pressure
- - causes hypotension
3b. what medication wont work?
- -ephedrine - what does the renal disease make the diabetic patient prone to?
- - volume overload, hyperkalemia, longer half life of drugs (insulin and NDMR (aminosteroids))