from Section 3 - Reproductive Endocrinology and Infertility
Published online by Cambridge University Press: 24 November 2021
Ovarian hyperstimulation syndrome (OHSS) mostly occurs due to excessive FSH stimulation, with final follicle maturation by hCG for IVF. Symptoms usually start 2–4 days after oocyte retrieval; alternatively, endogenous hCG from an implanting embryo can initiate OHSS some days later. Luteinized follicles synthesize vascular endothelial growth factor (VEGF) which induces angiogenesis and increased capillary permeability by inhibition of the cell adhesion molecule vascular endothelial-cadherin (VE-cadherin). This causes fluid leakage from the vascular bed to the third space, resulting in enlarged lutein cysts and ascites. Initial symptoms are bloated abdomen with pain, and in more severe cases dyspnoea, decreased renal and hepatic function and thromboembolism. There is no causal treatment of established OHSS, but there are several prophylactic strategies based on risk evaluation of each patient. In established OHSS, treatment is mainly supportive, by correcting fluid, salt and protein deficits, and low molecular weight heparin for thrombosis prophylaxis.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.