This document discusses various diseases and complications that can occur during pregnancy. It covers topics such as asthma, diabetes, infections, preeclampsia, and other medical conditions that may impact a pregnancy. It also outlines complications that can arise during labor and delivery, including premature rupture of membranes, abnormal fetal presentation, shoulder dystocia, and fetal-pelvic disproportion. Some complications may require medical interventions like induction of labor, operative vaginal delivery, or Cesarean section. The risks of any medical procedures during pregnancy should be explained to the patient.