What factor is most commonly assessed for a pregnant client concerning group B Streptococcus (GBS) status?

The most commonly assessed factor concerning group B Streptococcus (GBS) status in pregnant clients is the history of previous GBS infections. This evaluation is critical because a previous GBS infection in a past pregnancy can influence the risk of recurrence in subsequent pregnancies.

When a woman has had GBS in a previous pregnancy, healthcare providers may monitor her current pregnancy more closely, as she may be at a higher risk for GBS colonization during labor. The presence of GBS can lead to serious complications, such as neonatal sepsis, if transmitted during delivery. Therefore, knowing whether she has had GBS issues in prior pregnancies is essential for determining the need for antibiotic prophylaxis during labor to reduce the risk of infection in the newborn.

Other factors listed, such as the presence of multiple pregnancies, gestational age, or urinary tract infections, do not provide as direct or relevant information regarding GBS status and the associated management during pregnancy and delivery.