The nurse is assessing blood flow in the lower extremities of a client. What should the nurse keep in mind when using a Doppler for this assessment? (Select all that apply)
a) Apply gel to the skin before using the Doppler
b) Use a continuous wave Doppler for accurate measurements
c) Place the Doppler probe at a 45-degree angle to the blood vessel
d) Assess for the presence of arterial and venous flow
