Identify four major obstetric complications associated with grand multiparity, and explain the primary pathophysiological mechanism that increases the risk of postpartum hemorrhage (PPH) in these patients.

The slide lists several obstetric problems that may be more frequent—**anaemia, cord prolapse, cephalopelvic disproportion and obstructed labour, APH, PPH, malpresentation, and uterine rupture**—and gives brief suggested context for some, such as malpresentation or a floating fetal head in relation to cord prolapse, and increasing fetal size or malposition in relation to obstructed labour. It poses 'Why?' for APH, PPH, malpresentation, and uterine rupture but does **not** supply explanations for each of those items. A rigorous answer should separate what the source states from what might be inferred or learned elsewhere. It is not appropriate to invent or attribute specific mechanisms to the lecture when they are absent from the supplied text. **Key takeaway:** Report the stated associations accurately and identify when the source does not provide a causal explanation. **Glossary:** - **APH**: Antepartum haemorrhage, bleeding from the genital tract before delivery during pregnancy. - **PPH**: Postpartum haemorrhage, excessive bleeding after childbirth. - **Malpresentation**: A fetal presenting part other than the usual vertex presentation.