{"id":50471,"date":"2018-10-01T16:02:57","date_gmt":"2018-10-01T14:02:57","guid":{"rendered":"https:\/\/ivi-fertility.com\/?p=47922"},"modified":"2024-01-17T16:12:20","modified_gmt":"2024-01-17T14:12:20","slug":"ovarian-reserve-and-what-does-it-mean-for-fertility","status":"publish","type":"post","link":"https:\/\/ivi-fertility.com\/blog\/ovarian-reserve-and-what-does-it-mean-for-fertility\/","title":{"rendered":"What is the ovarian reserve and what does it mean for fertility?"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>The ovarian reserve simply describes the number of egg follicles remaining in a woman\u2019s ovaries. Clearly the ovarian reserve therefore has implications for fertility or infertility, but it is not a simple yardstick. It is quite possible to have a low ovarian reserve and still conceive naturally, or to have a high reserve and yet have difficulties in becoming pregnant. In this article we explain how the level of a woman\u2019s ovarian reserve can be detected. We also examine how testing the ovarian reserve can help clinicians to recommend the best type of help for infertility issues and how a knowledge of their status can help women to make important decisions about their fertility both currently and for the future.<\/p>\n<p>&nbsp;<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_68_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/ivi-fertility.com\/blog\/ovarian-reserve-and-what-does-it-mean-for-fertility\/#How_can_you_find_out_the_level_of_your_ovarian_reserve\" title=\"How can you find out the level of your ovarian reserve?\">How can you find out the level of your ovarian reserve?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/ivi-fertility.com\/blog\/ovarian-reserve-and-what-does-it-mean-for-fertility\/#What_does_the_ovarian_reserve_level_indicate_for_fertility_in_the_future\" title=\"What does the ovarian reserve level indicate for fertility in the future?\">What does the ovarian reserve level indicate for fertility in the future?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/ivi-fertility.com\/blog\/ovarian-reserve-and-what-does-it-mean-for-fertility\/#i\" title=\"\u00a0\">\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/ivi-fertility.com\/blog\/ovarian-reserve-and-what-does-it-mean-for-fertility\/#How_does_vitrification_of_oocytes_work_and_what_does_the_treatment_involve\" title=\"How does vitrification of oocytes work and what does the treatment involve?\">How does vitrification of oocytes work and what does the treatment involve?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/ivi-fertility.com\/blog\/ovarian-reserve-and-what-does-it-mean-for-fertility\/#Ovarian_stimulation_is_the_first_step\" title=\"Ovarian stimulation is the first step\">Ovarian stimulation is the first step<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/ivi-fertility.com\/blog\/ovarian-reserve-and-what-does-it-mean-for-fertility\/#Next_step_vitrification\" title=\"Next step vitrification\">Next step vitrification<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/ivi-fertility.com\/blog\/ovarian-reserve-and-what-does-it-mean-for-fertility\/#Oocyte_vitrification_for_cancer_patients\" title=\"Oocyte vitrification for cancer patients\">Oocyte vitrification for cancer patients<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"How_can_you_find_out_the_level_of_your_ovarian_reserve\"><\/span><strong>How can you find out the level of your ovarian reserve?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In general, women are born with approximately 1,000,000 oocytes, but by the time puberty is reached and menstruation begins, only about 400,000 follicles remain, of which some 1,000 are lost in each menstrual cycle. Therefore, by the age of 35 the ovarian reserve represents approximately 10% of the initial oocyte count and continues to decline from that point onwards. Age is therefore the deciding factor in terms of ovarian reserve. However, there are tests which will provide an insight into whether your reserve is in line with that expected from a simple calendar calculation.<\/p>\n<p>A test frequently used to determine the level of ovarian reserve is to measure levels of AMH. This refers to the Anti-M\u00fcllerian Hormone, a substance secreted by developing egg sacs (ovarian follicles). The higher the number of eggs remaining in the ovaries, the higher the level of AMH in the bloodstream. Therefore, a low level is considered to be a sign of a low ovarian reserve, i.e. few remaining follicles. This would be normal for a woman who is approaching menopause. Conversely, a woman who has polycystic ovarian syndrome, characterised by the presence of many small ovarian follicles, would normally be expected to show high levels of AMH. You can find out more about low AMH levels and what they mean for fertility in our <a href=\"https:\/\/ivi-fertility.com\/blog\/low-amh-levels-fertility\/\">blog article about low AMH levels <\/a>on the IVI website.<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_does_the_ovarian_reserve_level_indicate_for_fertility_in_the_future\"><\/span><strong>What does the ovarian reserve level indicate for fertility in the future?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In general <strong>ovarian reserve<\/strong> levels are highest in young women. What does this mean for women who would like to start a family in the future, but wish to delay this for career-building or other reasons? There is a growing awareness that there are now options for the preservation of fertility into the later reproductive years. This affords opportunities that were not available to previous generations. The method? The vitrification of oocytes. This allows a woman to delay parenthood until she decides she is ready. This process allows the mature eggs obtained following ovarian stimulation to be cryopreserved so that they can be used at a later date. They will have the same prognosis as they did at the point when they were vitrified. Due to the fact that ice crystals do not form, oocyte survival rates are high, allowing motherhood to be postponed with a reasonable guarantee of success.<\/p>\n<p>Naturally enough, the best time to have oocytes vitrified is when the ovarian reserve remains high, and for most women this means between the ages of 25 and 35. Even though oocyte survival rates are similar when vitrification is undertaken later, the resulting pregnancy rates are lower when the patient is somewhat older. This is also the case when fresh oocytes are used. This fact of nature explains why, if a woman wishes to preserve her fertility for a time in the future, it is a decision best taken well in advance. The technique is also one of the options available to women who are due to undertake cancer treatments and thus want to safeguard their fertility beforehand.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"i\"><\/span>\u00a0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h2><span class=\"ez-toc-section\" id=\"How_does_vitrification_of_oocytes_work_and_what_does_the_treatment_involve\"><\/span>How does vitrification of oocytes work and what does the treatment involve?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The main advantage of the vitrification of oocytes as opposed to traditional freezing is that ice crystals, which would damage the oocyte, do not form. As a result, around 97% of the oocytes survive the process. Furthermore, the same clinical results are obtained as when fresh oocytes are used.<\/p>\n<p>Of the different vitrification techniques that are available, the Cryotop method is the newest and the one with the best results. IVI has pioneered the incorporation of this technique and is the European leader in its clinical use. With the Cryotop technique, survival figures of up to 97% have been achieved for young patients (under 35 years old), with pregnancy rates of 65% and implantation rates of 40%. Vitrification is actually a solidification process in which the oocytes are treated with cryoprotective substances and submerged in liquid nitrogen at a temperature of -196\u00a0\u00b0C<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ovarian_stimulation_is_the_first_step\"><\/span>Ovarian stimulation is the first step<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Treatment follows a similar pattern as that for a standard IVF procedure. First is the administration of daily injections which cause the ovaries, instead of producing a single ovum which is what they do naturally each month, to produce more oocytes so that a larger number of can be obtained for preservation. This treatment takes place at an IVI assisted reproduction clinic and spans between 10 and 20 days, depending on the protocol used and the speed of response of the individual patient. During treatment, a series of 3 or 4 ultrasound scans is carried out and hormonal blood levels are checked to confirm that there is normal growth and development of the follicles. Oocytes are then retrieved in the operating theatre under sedation so that the patient does not feel any kind of discomfort during the procedure, which lasts approximately 15 minutes.<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Next_step_vitrification\"><\/span><strong>Next step vitrification <\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>At this point the method diverges from the traditional IVF technique, whereby the eggs that have been retrieved are fertilised and the most promising embryos transferred to the patient\u2019s uterus. In the case of vitrification, the oocytes are not fertilised but immediately subject to the vitrification process and subsequently stored in liquid nitrogen. It\u2019s as simple as that. The patient is then free to live her life as normal until such time as she decides to use her eggs in order to reach the goal of parenthood. There is no time limit on how long the vitrified oocytes can be stored, so patients really can wait until the time is right.<\/p>\n<p>When that time comes, the procedure again follows the familiar pattern of normal IVF treatment. The de-vitrified eggs are fertilised with sperm from the woman\u2019s partner or a donor and implanted into the patient\u2019s uterus in the normal way. To learn more about how the process works, why not have a look at our <a href=\"https:\/\/www.youtube.com\/watch?time_continue=4&amp;v=DjgnOUpP9xA\">video on the vitrification of oocytes<\/a> on the IVI YouTube channel? Remember also that you can always browse our website for the most up-to-date facts and figures about the options available and how our clinics may be able to help.<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Oocyte_vitrification_for_cancer_patients\"><\/span><strong>Oocyte vitrification for cancer patients<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>As the treatment of choice for the preservation of fertility<a href=\"https:\/\/ivi-fertility.com\/assisted-reproduction-treatments\/preserva\/\">, vitrification is one of the possibilities for patients about to undergo cancer treatment<\/a>. Radiotherapy and chemotherapy speed up the natural reduction in the number of <strong>follicles<\/strong> and prevent them from maturing. This, together with the fact that ovaries cannot regenerate, can lead to premature ovarian failure. Before the advent of egg preservation techniques, this meant that infertility was often inevitable. Luckily, science has since moved on.<\/p>\n<p>The vitrification of oocytes for cancer patients allows pregnancy to be postponed until the patient has recovered from the disease, with the same reproductive prognosis that they had when the oocytes were vitrified. It is important to get advice on the options in terms of preserving fertility as soon as the diagnosis has been made and treatment with chemotherapy is being considered.<\/p>\n<p>There are several factors that we need to take into account when considering the vitrification of a cancer patient\u2019s oocytes. These include her age, her <strong>ovarian reserve<\/strong> and the time available to us before chemotherapy starts. The reproductive prognosis will depend greatly on the number of oocytes which we succeed in vitrifying. While it is not possible to guarantee a pregnancy, we do our utmost to help patients conceive through IVF.<\/p>\n<p>&nbsp;<\/p>\n<p>We hope that this article has helped you to feel better informed about the <strong>ovarian reserve<\/strong>, its implications for fertility, and the options available to you for preserving fertility until the time is right. When the time is right for you, and you feel ready to visit an IVI clinic, you can do so to discuss any concerns you may have in your particular circumstances and the different types of fertility and fertility preservation treatments that may interest you. Your enquiry will be met with a friendly and helpful response.<\/p>\n<p>You are welcome to contact us through our <a href=\"https:\/\/ivi-fertility.com\/ask-for-an-appointment\/\">online contact form<\/a>. A specialist will then get back to you without delay. Alternatively give us a call on 08 000 850 035 if calling from the UK or +34 960 451 185 from other countries.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"&nbsp; The ovarian reserve simply describes the number of egg follicles remaining in a woman\u2019s ovaries. Clearly the ovarian reserve therefore has implications for fertility or infertility, but it is not a simple yardstick. It is quite possible to have a low ovarian reserve and still conceive naturally, or to have a high reserve and&#8230; <a class=\"view-article\" href=\"https:\/\/ivi-fertility.com\/blog\/ovarian-reserve-and-what-does-it-mean-for-fertility\/\">View Article<\/a>","protected":false},"author":1,"featured_media":44514,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,50],"tags":[151],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is the ovarian reserve and what does it mean for fertility? - IVI Fertility<\/title>\n<meta name=\"description\" content=\"&nbsp; The ovarian reserve simply describes the number of egg follicles remaining in a woman\u2019s ovaries. 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