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62 Cards in this Set
- Front
- Back
When is asymptomatic AVR indicated in severe AS?
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AVR is indicated for pts with severe LV dysfunction and EF <0.50 or when getting other surgery
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When is AVR indicated in patients with severe AS
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if symptoms
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How often should you echo patients with AS
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Echo for change in symptoms, yearly in severe AS, reeval pts every 1-2y for moderate, and 3-5 for mild AS
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What about vasodilators in AR?
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Vasodilator therapy is indicated or chronic therapy in patients with severe AR who have symptoms or LV dysfunction when in operable
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What do the guidelines state about AR and AVR regarding function
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AVt is indicated for symptomatic pts with sever AR irrespective of LV fxn
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What about aortic root therapy in setting of AVR
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Concomintant Aortic Root placement if root >5.0cm, or increasing rate >0.5cm/yr
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How often do patients with aortic roots > 4.0 need echos?
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Pt’s with Asc Aort >4.0cm need yearly echos
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When should bicuspids getting heart surgery get AVR also
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Pt with Bicuspids underoing repair for seve AR or AS, should have repair or replacement of root if > 4.5cm
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What do the guideliens state about anticoag and patients with MS and Afib, and what about MS patietns without afib?
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Anticoag is indicated in pts with MS and Afib (parox, persis or perm) Anticoag is indicated in pts with MS and prior embolic event or presence of LA thrombus (even in SR) Class I loe b
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What are the effects of radiation on the heart?
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Radiation heart disease..typically 5 years after therapy, assoc with caclificaitoon of valves and fibrous structure…AR with AI most common, MR and TR also common. Restrictive cardiomyopathy, aortic and other vascular calcification, coronary arter stenosis (often at OS) pericardial lesions and conduction abnormalities
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List valvular lesions of MItral that are associated with high materal or fetal risk in pregnancy
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MS FC II-IV and MR with FC III-IV, any MV dz with severe pulm htn (p pressures that are >75% of systemic pressure), mitral valve disease iwht EF less than 40%, mechanical prosthetic valve requiring anticoag
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List valvular lesions of AORTA that are associated with high materal or fetal risk in pregnancy
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Severe AS with or without symptoms, AR with FC II-IV, aortic disease with p hten with pressure >75% of systemic) Aortic disease with EF < 40%, marfan syndrome with or without AR
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IS balloon aortic valvuloplasty useful in children?
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yes and should be tried 1-2x before surgery
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AVR for AR in asymptomatic pts with
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pts with LV dysfxn , especially if severe, also recommend if EF is normal an End diast Dim > 7.5
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Asymptomatic patients with AR monitor three things:
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symptoms, depressed EF (<0.5) or increased volume >7.5 diastt, >5.5 Systd
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WILKINS (not the BLOCK SCORE)
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4…8 Below valve + leaflet thickness or calcification, kinesis of valve
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Carvallo’s sign:
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A lower left parasternal systistolic murmur that may increase on inspiration… characterstic of Severe
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Pergolide
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(for Parkinson’s) excess frequency of carcinoid –like vasculopathy.
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Gaucher diseasee
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Gaucher disease = heritable deficiency of b-glucosidase, w/accumulation of cerebrosides in spleen, liver, bone marrow, lymph nodes, brain, and heart.
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Davies disease
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Davies disease= Endomyocardial fibrosis or
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Löffler endocarditis,
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Löffler endocarditis parietalis fibroplastica= hypereosinophilic syndrome,
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ECHINOCOCCUS (HYDATID CYST):
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ECHINOCOCCUS (HYDATID CYST): sheep-raising areas, mebendazole and albendazole, surgical excision is generally recommended
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Trichinella spiralis:
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Trichinella spiralis: reatment is with anthelmintics and corticosteroids, heart may be dilated and flabby
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hypersensitivity myocarditis:
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hypersensitivity myocarditis: Myocardial biopsy may reveal eosinophilic or lymphocytic infiltrates
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SMALLPOX VACCINATION:
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SMALLPOX VACCINATION: myopericarditis, military recruits…
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clozapine,
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clozapine, currently indicated for resistant schizophrenia:::::rapid-onset hypersensitivity myocarditis
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tricyclic antidepressants
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tricyclic antidepressants: sinus tachycardia, postural hypotension, disturbances in rhythm, abnormalities of atrioventricular conduction, and even sudden death
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phenothiazines:
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phenothiazines:
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Radiation therapy:
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Radiation therapy: related to the cumulative dose of the radiation and the mass of heart irradiated. Fibrosis, coronary stenosis (at os) occas acute pericarditis
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Hypothermia:
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Hypothermia: cardiac dilation, microinfarcts, sinus brady, conduction disturbances, a and f fib, osburn waves,
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Giant cell myocarditis:
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Giant cell myocarditis: extremely malignant and aggressive course, many respond to immunosuppr, many need Tx
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Dallas criteria:
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Dallas criteria: for diagnosis of myocarditis by histology, allow low sens 2nd to patchy nature. 4 categories : based on Clinical, CMR, (echo,angio or lab) and biopsy
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Treatment for Myocarditis:
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Treatment for Myocarditis: Diuretics, vasodilators, Acei, ARb, if unstable all shock Rx, immune therapy,
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marantic endocarditis
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marantic endocarditis nonbacterial thrombotic endocarditis, large friable, sterile vegations on valves, assoc with DIC and system embolism, commong in HIV
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NAME syndrome:
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NAME syndrome: (Nevi, Atrial myxoma, Myxoid neurofibroma, and Ephelides
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LAMB syndrome
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LAMB syndrome (Lentigines, Atrial Myxoma, and Blue nevi),
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Carney syndrome, w
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Carney syndrome, which includes myxomas arising in a noncardiac location (breast or skin), nonmyxomatous extracardiac tumors (e.g., pituitary adenoma), skin pigmentation, and hyperendocrine states
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At the starting point, how wide is the sound beam width?
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The sound beam's width is the same as the transducer diameter
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As the sound beam gets further from the transducer, what happens to it?
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The sound beam narrows, like a funnel
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After the sound beam narrows, what happens to its shape?
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The sound beam expands
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What is the location where the beam diameter is the narrowest called?
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Focus or Focal Point
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What is the region from the transducer to the focus called?
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Near Zone
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At the far end of the near zone, what is the diameter of the near zone?
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1/2 the diameter of the active element
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The distance from the transducer to the focus is called what?
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Focal Length
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The region starting at the focus and extending deeper is called what?
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Far Zone
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When the beam is two near zone lengths from the transducer, how wide is it?
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The beam is as wide as the active element again
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What happens to the sound beam width beyond two near zone lengths from the transducer?
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The beam widens beyond the width of the active element, and continues expanding
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The region around the focus where the beam is relatively narrow is called what?
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Focal Zone
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Why is the focal zone important to sonographers?
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Reflections arising from the focal zone create images of superior detail, compared to other depths
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What marks the end of the near zone?
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Focus
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At what point does the sound beam first begin to widen?
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The focal zone is found where?
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Half in the near zone
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The distance from the transducer to the focus is called what?
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Focal Depth
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Is focal depth adjustable by sonographers on most modern ultrasound systems? If so, what is this called?
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Yes. Adjustable focus systems are called Phased Array
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For a fixed-focus transducer, what two characteristics determine the focal depth?
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1. Transducer Diameter and Sound Frequency
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What is the relationship between transducer diameter and focal depth?
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Directly Related
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What is the relationship between frequency and focal depth?
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Directly Related
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High frequency transducers are used to image superficial, or shallow structures. How can this be when a high frequency beam will produce a deep focus (direct relationship)?
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Transducer manufacturers overcome this by making exceptionally small diameter crystals for high frequency transducers in order to locate the focus shallower for superior images
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The gradual spread of the sound beam beyond the focus is called what?
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Beam Divergence
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What two characteristics of a transducer determine beam divergence?
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Transducer and Sound Frequency
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What is the relationship between crystal diameter and beam divergence?
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Inversely Related
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(Smaller|Larger) crystals produce beams that spread out (more|less) in the far field
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Small|more and Larger/less
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