Final answer:
The correct position for a non-stress test is supine with modifications like a left-lateral tilt to prevent supine hypotensive syndrome, accomplished by placing a wedge under one hip.
Step-by-step explanation:
When a nurse is preparing to perform a non-stress test, the correct position to recommend for the client is to be in a comfortable semi-recumbent position with a slight lateral tilt, usually achieved by using a wedge under one hip. This is commonly referred to as the 'left-lateral' position and helps prevent supine hypotensive syndrome by avoiding compression of the inferior vena cava. Therefore, the appropriate answer from the given options would be c. The person is supine with adjustments made for comfort and safety. Options a. and b. are incorrect for a non-stress test, and the details about administering thallium-201 or measuring blood pressure are not directly relevant to positioning for a non-stress test. For a non-stress test (NST), it is commonly recommended that the client be placed in a semi-Fowler's position. In this position, the client's head and upper body are elevated at an angle of approximately 30 degrees. This position is considered comfortable for the client and facilitates the monitoring of fetal heart rate and uterine contractions during the non-stress test. It allows for optimal placement of monitoring equipment and easy access for the healthcare provider performing the test.