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Conventional IVF
Gonadotrophin hCG OR ET
GnRH agonist
progesterone
0 7 14 21 28 35 42 49 56 63
GnRH antagonist
Gonadotrophin hCG or GnRH agonist progesterone
• GnRH agonist trigger
• More complex luteal support
Collection - transfer
(E2, P4, hCG.... GnRH agonist)
GnRH antagonist
oestradiol
days
0 7 14 21 28
OR ET
Youssef et al, Cochrane 2014
Conventional IVF
Gonadotrophin hCG OR ET
GnRH agonist
progesterone
0 7 14 21 28 35 42 49 56 63
GnRH antagonist
Gonadotrophin hCG or GnRH agonist progesterone
• Intravenous colloids at oocyte
retrieval: Hydroxyethyl starch
(HES) OR 0.12 95%CI 0.04-0.40
0 7
14 21 28
days
GnRH antagonist
Cabergoline 0.5mg
Youssef et al, Cochrane 2011 Tang et al, Cochrane 2016
oestradiol
OR ET
Collection - transfer
• Dopamine agonists inhibit VEGF:
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