A nurse is collecting data from a client during a routine prenatal visit. The client is in their second trimester of pregnancy and reports feeling dizzy, has a racing heart, and becomes pale while lying on their back. Which of the following actions should the nurse take?

A. Provide the client with a glass of orange juice. While orange juice can provide a quick source of sugar and may help if the client is experiencing low blood sugar, the symptoms of dizziness, racing heart, and pallor while lying on their back are more indicative of supine hypotensive syndrome. Therefore, addressing the positioning is more critical. B. Check the client's temperature. Checking the client's temperature may provide some information but is not the most immediate action to take in response to the symptoms presented. The symptoms described are more related to positional changes rather than an infection or fever. C. Instruct the client to take a brisk walk. Encouraging physical activity, especially brisk walking, is not appropriate given the client's symptoms. Walking may exacerbate feelings of dizziness and discomfort. D. Position the client on their left side. Positioning the client on their left side helps relieve pressure on the inferior vena cava, which can occur when a pregnant client lies supine. This action can improve blood flow to the heart and the fetus, alleviating symptoms of dizziness, racing heart, and pallor. It is a recommended intervention for clients experiencing these symptoms in the second trimester.