Preterm birth is defined as a fetus born prior to:

The purpose of tocolytic therapy during preterm labor is to:

A risk factor for preterm premature rupture of membranes (PPROM) is:

A 29-year-old G1P0 patient at 36 weeks reported itchy bumps on the thighs and abdomen for the past week.  Now, all of the skin feels inflamed.  Physical examination revealed itchy small erythematous and edematous papules and plaques in the stretch marks with periumbili­cal sparing and across upper legs (see Figure).  What is the MOST likely diagnosis?       

To prevent listeriosis, all of the following foods should be avoided in pregnancy EXCEPT:

A 39-year-old G3P2 patient at 27 weeks reported a 2-month evolution of pruritic papules on the lower back.  Physical examination revealed grouped erythematous papules, some of which were pustular, and others showed central crusts in the lumbar region (see figure).  What is the likely diagnosis?     

Oligohydramnios is caused by:

Preventive measures to avoid the spread of parvovirus B19 include:

What two factors are essential for a fibroid treatment to be considered optimal?

In the United States, mothers infected with HIV are encouraged to breastfeed their infants because the benefits outweigh the risks.