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62 Cards in this Set

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