A 25-year-old woman in early labour at term complains of right calf pain. Of note, she had developed a deep vein thrombosis in her previous pregnancy. Which of the following options is most accurate...

A 25-year-old woman in early labour at term complains of right calf pain. Of note, she had developed a deep vein thrombosis in her previous pregnancy. Which of the following options is most accurate regarding the management of this patient? a. A raised d-dimer result is useful when confirming a deep vein thrombosis b. Low molecular weight heparin therapy may be continued through labour, until the start of the second stage c. Regional anaesthesia should not be undertaken until at least 12 hours after the last dose of therapeutic LMWH d. An epidural catheter should not be removed within 6 hours of a dose of LMWH e. A thrombo-prophylactic dose of LMWH may be given 4 hours after Caesarean section