What action should a nurse take when preparing to measure the fundal height of a pregnant client?

When measuring the fundal height of a pregnant client, having the client empty her bladder is crucial. A full bladder can unavoidably push the uterus higher than its actual position, leading to inaccurately elevated measurements. Emptying the bladder ensures that the measurement reflects the true distance from the pubic symphysis to the fundus of the uterus, which is essential for evaluating fetal growth and development accurately.

While lying on the left side may be beneficial during certain assessments to improve uteroplacental blood flow, it is not a specific requirement for fundal height measurement. Performing Leopold's maneuvers, which helps in assessing fetal position, is not necessary before measuring fundal height. Additionally, giving the client cold juice to drink does not have a direct correlation with the measurement process and might not provide any benefit in this context. Thus, ensuring the bladder is empty is the key preparatory action for an accurate fundal height assessment.