This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Smoking in pregnancy causes:a) IUGRb) PIHc) APHd) PPH 
Select and explain. 
A. ac, B. bc, C. ad, D. b
A: ac
Answer: A: ac 
Explanation: Smoking increase the risk of :

Preterm labour
Fetal growth restriction
Low birth weight
Attention deficit/Hyperkinetic disorder t ypically identified by school age
Behavioural learning problems
Besides the above fetal problems it increase the risk of pregnancy complications related to vascular damage, such as placental insufficiency and placental abruption.