Which of the following are true regarding the cardiopulmonary system during pregnancy?
a) Cardiac output may increase by 85% during delivery
I)) In peripartum cardiomyopathy, cardiac size can predict prognosis
c) Amniotic fluid embolism may be associated with disseminated intravascular coagulation (DIC)
d) Spontaneous pneumothorax during pregnancy is common
e) Cardiac activity is visualised by transvaginal scan when crown-to-rump length (CRL) is 5 mm

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