ARDMS SPI Exam Review TEST 17 October 28, 2017 by Rana Waqar Leave a Comment 1. Which of the following is representative of Ohm’s law? a. V _ IR b. I _ R/V c. R _ I/V d. R _ VI 2. What is the point at which Reynolds number predicts turbulence? a. 500 b. 1200 c. 2000 d. 4000 3. In order to maintain flow as a constant, if the area of a vessel increases what must happen to the velocity? a. It increases b. It decreases c. It does not change with changes in area d. Not enough information 4. Which of the following is not a way in which venous blood is assisted in returning to the heart? a. Calf muscle pump b. Inspiration c. Expiration d. Venous valves 5. In a standing patient, where is the hydrostatic pressure the highest? a. In the feet b. In the arms c. In the abdomen d. Near the heart 6. A stenosis of 75% in area is equal to what percent of stenosis in diameter? a. 25% b. 50% c. 75% d. 100% 7. In the exercising patient, what is the response to peripheral resistance with arteriolar dilatation? a. The peripheral resistance increases b. The peripheral resistance decreases c. There is no change in peripheral resistance d. Peripheral resistance would decrease but only in presence of disease 8. Which of the following will be seen with a stationary reflector? a. There is a higher reflected frequency compared with the incident frequency b. There is a lower reflected frequency compared with the incident frequency c. The incident frequency is equal to the reflected frequency d. The reflected intensity is higher than the incident intensity 9. What happens as the frequency of the transducer increases? a. Penetration ability is increased b. The amount of scatter is increased c. The frequency shift is decreased d. The amount of attenuation is decreased 10. What occurs as the Doppler angle is increased? a. It decreases the frequency shift b. It increases the frequency shift c. It increases the risk for aliasing d. It improves the accuracy of the velocity calculation
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