rvt ardms exam review questions and answers 100 accurate rated a 3 causes of venous thrombosis also called
virchows triad venous stasis
traumaendothelial damage
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RVT ARDMS exam review Questions and
answers. 100% Accurate. Rated A
3 causes of venous thrombosis also called, Virchow's Triad - ✔✔Venous stasis, trauma/endothelial
damage, hypercoagulability
Venous stasis - ✔✔Slowed blood flow in veins. Caused by immobility, myocardial infarction, CHF,
hypotension, COPD, obesity, pregnancy, previous DVT, extrinsic compression, SVC syndrome, paraplegia,
surgery associated conditions.
2 types of Trauma/endothelial damage - ✔✔Intrinsic and extrinsic
Intrinsic trauma is - ✔✔Damage to the vessel wall from intravenous drugs or a catheter. Increased use
of PICC line results in higher incidence of upper extremity thrombus, usually developing at most
proximal portion of PICC line.
Extrinsic trauma is - ✔✔Damage caused by an accident, which can occur at any site of the body.
Hypercoagulability is associated with - ✔✔Pregnancy, cancer, oral contraceptives and/or hormone
replacement therapy, inherited states,e.g., factor V Leiden or protein C, protein S, or Antithrombin III
deficiency
Sensitivity, and
How to calculate? - ✔✔-Ability of a test to detect disease, how many tests are correctly called positive.
- # of true positives divided by # of all positive tests by gold standard, or TP/TP+FN
Specificity, and how to calculate? - ✔✔-Ability of a test to identify normality, or how many results were
correctly called negative.
- # of true negative divided by # of all negative tests by gold standard, or TN/TN+FP
, Positive predictive value, and how to calculate? - ✔✔-percentage of test results that accurately predict
abnormality, or what % correctly predicted disease.
- # of true positive test divided by # of all positive tests, or TP/TP+FP
Negative predictive value, and how to calculate? - ✔✔- percentage of test results that accurately predict
normality, or what % correctly predicted absence of disease.
- # of true negatives divided by # of all negative tests, or TN/TN+FN
Accuracy, and how to calculate? - ✔✔- % of correct tests, or how well does the test both detect and rule
out disease.
- total # of correct tests divided by total # of all tests, or TP+TN/TP+FP+FN+TN
Brachiocephalic/ Innominate vien formed from confluence of? - ✔✔Subclavien and Internal jugular vein
Vascular disease more common in women? - ✔✔Takayasu's arteritis-tennage to young women more
common.
FMD- younger women.
Celiac band syndrome- young athletic women.
Vascular disease more common in men? - ✔✔Obliteritis angitis(bergers disease)- younger <40 men,
heavy smokers.
Popliteal artery entrapment syndrome- young athletic men.
Celiac artery supplies blood to what organs? - ✔✔Stomach, liver, pancreas, duodenum, and spleen.
SMA supplies blood to what organs? - ✔✔Small intestine, cecum, ascending colon, part of transverse
colon.
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