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95 Cards in this Set
- Front
- Back
Familial hypercholesterimia pathogenesis?
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defective LDL receptor especially in the liver, hard time removing LDL cholesterol from blood stream= very high cholesterol in blood stream--> early onset artherosclerosis
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Diseases associated with familiar hypercholsteremia?
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angina, stable angina, MI, ischemia, PVD, stroke, artherosclerosis
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What is the cause for all these diseases with familial hypercholesterolemia?
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cholesterol deposits in wall, cholesterol stays in blood longer and leads to serious disease
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How familiar hypercholesteremia inherited?
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autosomal dominant
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what is it Familial adenomatous polyposis
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APC geneon chromosome 5q..tons of polyps in colon can develop into CRC
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What age is FAP usually discovered
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before age 35, disease of the young!
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What is spherocytosis
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sphere-shaped RBCS bc lack of spectrin
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Problem with shape of RBC in spherocytosis
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spleen can not take abnormal shape, can not remove them anymore, eventually get a splenectomy
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Is anything wrong with the function of these RBC?
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no 100% function just not bi-concave shaped
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Von Willebrand disease is what
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excessive bleeding bc no VWF factor
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What 2 things does a lack VWF effect
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can't attach to glycoprotein 1b or VIII..disrupts both wayts to form a clot
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What is ehlers-Danlos syndrom
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Connective tissue disease, many forms of abnormal collagen/elastin
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How will the patient appear in Ehlers-danlos
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hyperextensive skin and joints
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What is Marfan syndrome?
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fibrillin deficiencye, yielding defected microfibrils
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How does a pt look with marfan syndrome?
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tall thin, lens disolcation (CT in lens needs this), aortic dilation/aneurysms (microfibrils strengthen BV wall), arachnodactyly (long & slender fingers/toes) , mitral valve prolapse (can't sustain P so prolapse can lead to mitral regurgitation)
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What is the path of achondroplasi
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decreased chrondrocyte proliferation in growth plate of long bones, short bones
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What happens to the growth plate?
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early ossification- reach adolescents and won't grow anymore
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What if there's a fracture in the growth plate?
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will not grow anymore and scar tissue develops in site of fracture
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Neurofibromatosis 1 "Von Recklinghausen Disease"
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neurfibromas, optic nerve gliomas, pigmented nodules in iris, cafe au lait spots, axillary freckiling..neurologic tissue
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Neurofibromatosis 2
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acoustic neurofibromatosis- bilateral schqannomas on acoustic nerve, multiple meningiomas, hearing loss..
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Tuberous sclerosis
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hamartomas and benign tumors of brain, sprouts out like a potatoe..cysts of liver, kidney, & pancreas..red elevated lesions on benign tumors face..MR, facial, cutaneous lesions (shagreens' yellow patch pre-sacral/ ash leaf patches hypopigmented ash-leaf lesions)
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Von-Hippel Lindau
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high risk of RCC! capillary heamngiomas in cerebellum and retina...cysts of liver, kidney, & pancreas
CHeck RCC every time! Most get polycythemia bc too much erythropoiten...too much alkaline phosphatase |
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Huntington's disease
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inherited- won't see symptoms till 30-40, degeneration of caudate nucleus, putamen, and frontal cortex
see chorea, psychiatric disturbance, cognitive decline--> death, trinucleotide repeat CAG on chromosome 4 |
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What do we anticipate with huntington's disease
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each generation has an earlier expression of it
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Polycystic kidney disease
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renal cysts early adulthood, high risk of berry anyeurms..anywhere cysts renal tubule loses function there..good if can get a kidney transplant
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What hapens if a berry anyeursm explodes
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subarachnoid hemorrhage- worst headache of my life- poor prognoosis
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Polycystic Kidney Disease
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kidney and liver cysts, fatal in infant
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Describe hemochromatosis
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small intestin take up excess iron, even w a normal diet
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Where does this excess iron usually deposit
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liver, pancreas, heart, & skin--> can lead to cirrhosis
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What are the complications of hemochromatosis
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cirhosis, cardiomyopathy, bronze-colored skin..."bronze diabetes"
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What is chediak-higashi syndrome
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WBC have abnormal microtubules, fault movement
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What do you see common with Chediak-Higashi syndrom
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recurrent infection, development of lymphoid cancers, partial albinism, neuropathy
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why do you get partial albinism with this syndrome
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cant make melanin- pigment skin/hair devoid- lighter complex
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Beranrd-soulier disease causes
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excessive bleeding due to lack of GpIb needed for platelet adhesion to VWF
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Glanzmann's THombasthemia
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results in excessive bleeding bc no gpIIbIIIa can not plate-plate adhese!
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Glucose-6Phosphate dehydroganse deficiency causes
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iability to eradicate radical oxygen species especially in RBC
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What enzyme do RBC use to eradicate radicals?
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glucose-6-phosphate dehydrogenase
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What happens to the RBC when G6PDHD is defieicnt
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they start hemolysising when excess radicals develop
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What drugs must you keep G6PD deficient people away from?
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sulfa-drugs, will incr radicals and incr hemolysis
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G6PD is crucial in what pathway?
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to make NADPH
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what happens if you have low NADPH
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glutathion stays oxidized which increases free radicals
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What are Heinz bodies?
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oxidized hemoglobins precipitates in RBCs
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what are bit cells?
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they come from phagocytic removal of Heinz bodies by splenic macrophages
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What is fragile X syndrome?
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structural defects in chromosome X... X = diff shape (dangly arm)
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What are the clinical findings associates with fragile X?
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MR, large ears & jaw, males= macroorchidism, 50% female have MR
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what is triple repeated?
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CGG..demonstrates acnticipation
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Fragile X
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X-large jaw, ears, testes
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What gene is this linked with expression and methylation?
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FMR1
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What type is Fabry disease?
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spingolipidosis, but x-linked! not AR
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What is decreased in fabry?
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alpha-galactosidase A
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What are the characteristics of Fabry
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angiojeratomoas (wart-like growth w telangiectasisa) and renal failure
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What is the unique thing with Fabry disease?
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won't see CNS dysfunction as much
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What is LEsch-Nyhan syndrome
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defective purine salavge due to deficiency of HGPRT
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Describe the salvaging of purines
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cells are constantly broken down and when they are they release DNA.. and its made up of purines that are constantly re-integrated to DNA and recycled by this enzyme
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What happens if the purines are not recycled?
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excess production of uric acid
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What are clinical findings of Lesch-Nyhan?
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very high uric acid serum levels, gout, self-mutilation (eating fingers), retardation, choreoathetosis
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Describe supersaturation of HGPRT and when would this happen?
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When you breaking too many cells and releasing purines, happens w excessive drinking, protein bars, chemo/radiation therapy, tumor lysis, & organ meat
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What is commonly found after excessive drinking pain in ?
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toes= gout
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Any injury to skeletal m. cardiac or brain
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increases creatinine kinase
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Duchenne muscular dystrophy linked with
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lack of dystrophin- protein for muscle tone and function
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Without muscle tone you get
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muscle atrophy, increase in creatinine kinase, and eventually wheelchair and death
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What is becker muscular dystrophy
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some loss of dystrophin, go on longer without wheelchair bound- can last longer
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what do you see in bruton's agammaglobuinemia
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no antibodies in blood, low mature B cells..don't mature enough to make antibodies!
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bruton agammaglobulinemia likely to hav
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recurrent bacterial infections
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What is wiskott-aldrich syndrome
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Lack of making igM (first antibody made when encounter a microbe--> igG)
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Most common recurrent infection
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otitis media
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Eczema is?
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type I hypersensitivity, inability to have normal igM is one part of the story, also have some anomaly with type I hypersensitivite= overactivity
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Thrombocytopenia?
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lower # platelets..not that their bleeding a lot, but it is low! Small platelets all the time (MPV..mean platelet volume)
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Lack of NADPH oxidase?
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chronic granulomatous disease
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Why does a granuloma form?
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Neutrophil can't get rid without ROS, so macrophages keep coming and bring T-cells eventually form a granuloma
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B27 HLA: triad
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sacroilitis, bamboo spine, uveitis (iris)
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Reactive arthritis in HLA B27
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Cant see, cant pee, cant climb a tree
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The conjunctivitis, urethritis and arthritis is caused by
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immune system
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Someone w HLA B27 with chlymdia trichomatos can develop?
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reactive arthiritis
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Urethritis is due to?
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chylmadia triggers in appropriate response so inflammation occurs in conjunctiva, urethra, and joints...treat chylmdia urethritis still htere
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HLA b27 w bacterial gastroenteritis severe by shigella/ecoli etc.
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high risk to develop urethritis as well, not bc shigella- just like chlymdia trigger immune system to bring it about
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Psoriatic arthritis
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psoriasis, rheumatoid arthritis like symptoms- no rheumatoid factor- can be a serum marker
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Rheumatoid arthritis
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autoimmune effects on the joints, ultimately cartilage on bone of joint eaten away by MAC...acutely inflammed but feels hot to touch and to patient as well- feels inflammed, burning sensation
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HLA Dr2 disease at risk?
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narcolepsy, multiple sclerosis, type I diabetes
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Triad of narcolepsy
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sleep attacks, cataplexy, sleep paralysis- suddenly fall asleep and go right into REM- usually w stress- Dreams
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what is cataplexy
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loss of voluntary muscle control, brought in pt by significant emotionally upsetting event
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Sleep paralysis
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fall asleep, but lose voluntary muscle skeletal control- bc the skeletal muscle paralysis in 3-4, can intiate premature in an early stage for them...wide awake but wont be able to move at all!
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Multiple sclerosis (DR2)
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nystagmus, scanning speech, intention tremor
nystagmus- involuntary moving of eye scanning speech- goes through bad times and remits, bad again etc. loss of good muscle control of speech |
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Scanning speech
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not physical able to say but will keep scanning for the right word
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intention tremor
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intend to do something see a tremor, but when stop doing something the tremor goes away
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Parkinson's tremor
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limb at rest has tremor, when pick up something goes away
diff from MS! |
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Type I diabetes (DR2)
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recurrent or hyperglycemia, DKA, retinopathy, nephropathy
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DR3, SLE, give the insulin to me!
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remember that + diarrhea!
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SLE
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triad: malar rash, nephropathy, arthritis
malar rash wrap around to center..kidney problem in arthritis |
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DR3 also incr risk what eating problem
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celiac disease
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gliadin and gluten found in
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whaeat, rye, barley , oat
MAC destroys the villi with these auto-antibodies...be-headed wont absorb nutrients very well |
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Where does the fat go w malabsorption
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goes out w the stool- steatorrhea
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DR4
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rheumatoid arthritis, juvenile rheumatoid
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Juvenile starts when
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<16 yrs old, Ra-like arthritis burning but no rheumatoid factor
usually will self-resolve prob not life-long disease |
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Rheumatoid arthritis
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4!!!! criteria/7 to make diagnosis and assoc w Dr4! and Dw14!
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