A client has a full bladder during labor. What complication may occur?

Maternal illicit drug use, particularly cocaine or methamphetamines, causes profound vasoconstriction of the uterine arteries. This leads to acute placental abruption, intrauterine growth restriction, or sudden fetal hypoxia. These substances cross the placental barrier easily, directly affecting the developing fetal central nervous and cardiovascular systems.

A. Fetal demise: The most catastrophic outcome of maternal drug use is intrauterine death due to severe hypoxia or placental detachment. Vasoconstrictive agents cause a sudden cessation of oxygen delivery, leading to terminal fetal distress. This risk is highest with stimulants that cause spikes in maternal and fetal blood pressure.

B. Jaundice: While neonatal jaundice can occur due to prematurity associated with drug use, it is not the most severe or immediate risk. It is a manageable condition involving bilirubin accumulation in the skin. It does not carry the same level of morbidity or mortality as absolute fetal loss.

C. LBW: Low birth weight (LBW) is a very common result of chronic drug exposure due to restricted nutrient transfer through narrowed placental vessels. However, while significant, it is a non-lethal complication compared to fetal demise. LBW infants often require intensive care but generally survive with proper medical intervention.

D. Polyhydramnios: Illicit drug use is more frequently associated with oligohydramnios, or low amniotic fluid, due to decreased fetal renal perfusion and output. Polyhydramnios involves excessive fluid and is more common in gestational diabetes. Drug use typically restricts fetal growth and fluid production rather than increasing it.

Sexually transmitted infections (STIs) often trigger pelvic inflammatory disease (PID), leading to irreversible scarring of the reproductive tract. This anatomical damage frequently involves the fallopian tubes, causing tubal factor infertility or ectopic pregnancy. Screening allows for early antibiotic intervention to prevent long-term sequelae.

A. "Untreated STIs can cause infertility.": Pathogens like Chlamydia trachomatis can cause subclinical infections that lead to tubal occlusion. Chronic inflammation destroys the delicate ciliary epithelium required for ovum transport. Screening and treatment are essential preventative measures for preserving future reproductive capacity.

B. "It replaces vaccines.": STI screening is a diagnostic tool and does not provide immunity or replace immunizations like the HPV vaccine. Screening detects existing infections, while vaccines prevent them from occurring. Both are complementary components of preventative medicine but serve different functions.

C. "It prevents menstruation.": STIs do not typically interfere with the hormonal regulation of the menstrual cycle. While they may cause intermenstrual spotting or abnormal discharge, they do not cause amenorrhea. Menstruation is governed by the ovarian-pituitary axis, not by the presence of pathogens.

D. "It improves fertility.": Screening itself does not "improve" baseline fertility but rather protects existing fertility from degradation by infection. It is a defensive health measure. High fertility depends on gamete quality and uterine receptivity, which are not directly enhanced by a test.