ARDMS SPI Exam Review TEST 17October 28, 2017 by Rana Waqar Leave a Comment 1. Which of the following is representative of Ohm’s law?a. V _ IRb. I _ R/Vc. R _ I/Vd. R _ VI2. What is the point at which Reynolds number predicts turbulence?a. 500b. 1200c. 2000d. 40003. In order to maintain flow as a constant, if the area of a vessel increases what must happen to the velocity?a. It increasesb. It decreasesc. It does not change with changes in aread. Not enough information4. Which of the following is not a way in which venous blood is assisted in returning to the heart?a. Calf muscle pumpb. Inspirationc. Expirationd. Venous valves5. In a standing patient, where is the hydrostatic pressure the highest?a. In the feetb. In the armsc. In the abdomend. Near the heart6. 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 increasesb. The peripheral resistance decreasesc. There is no change in peripheral resistanced. Peripheral resistance would decrease but only in presence of disease8. Which of the following will be seen with a stationary reflector?a. There is a higher reflected frequency compared with the incident frequencyb. There is a lower reflected frequency compared with the incident frequencyc. The incident frequency is equal to the reflected frequencyd. The reflected intensity is higher than the incident intensity9. What happens as the frequency of the transducer increases?a. Penetration ability is increasedb. The amount of scatter is increasedc. The frequency shift is decreasedd. The amount of attenuation is decreased10. What occurs as the Doppler angle is increased?a. It decreases the frequency shiftb. It increases the frequency shiftc. It increases the risk for aliasingd. It improves the accuracy of the velocity calculation
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