{"id":85820,"date":"2024-12-06T17:12:06","date_gmt":"2024-12-06T08:12:06","guid":{"rendered":"https:\/\/www.hiro-clinic.or.jp\/nipt\/fetal-heartbeat-timing\/"},"modified":"2024-12-12T14:27:32","modified_gmt":"2024-12-12T05:27:32","slug":"fetal-heartbeat-timing","status":"publish","type":"post","link":"https:\/\/www.hiro-clinic.or.jp\/nipt\/fetal-heartbeat-timing\/?lang=en","title":{"rendered":"When can I check my heartbeat?Timing and how to see it explained"},"content":{"rendered":"\n<div style=\"border:solid #ffe6e6 0.8rem;background-color: #fff9f9;padding:3% 5%;margin:1rem 0 3rem;\">\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 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\" style=\"cursor:inherit\">\u76ee\u6b21<\/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:\/\/www.hiro-clinic.or.jp\/nipt\/fetal-heartbeat-timing\/?lang=en\/#Summary_of_this_article\" >Summary of this article<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/fetal-heartbeat-timing\/?lang=en\/#Table_of_Contents\" >Table of Contents<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/fetal-heartbeat-timing\/?lang=en\/#1_When_heartbeat_confirmation_becomes_possible\" >1. When heartbeat confirmation becomes possible<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/fetal-heartbeat-timing\/?lang=en\/#2_Specific_Methods_of_Heart_Rate_Confirmation\" >2. Specific Methods of Heart Rate Confirmation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/fetal-heartbeat-timing\/?lang=en\/#3_Causes_and_remedies_when_a_heartbeat_cannot_be_confirmed\" >3. Causes and remedies when a heartbeat cannot be confirmed<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/fetal-heartbeat-timing\/?lang=en\/#4_Pregnancy_Continuation_Rate_After_Heartbeat_Confirmation\" >4. Pregnancy Continuation Rate After Heartbeat Confirmation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/fetal-heartbeat-timing\/?lang=en\/#5_Relevance_to_NIPT_testing\" >5. Relevance to NIPT testing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/fetal-heartbeat-timing\/?lang=en\/#6_Be_careful_after_confirming_heartbeat\" >6. Be careful after confirming heartbeat<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/fetal-heartbeat-timing\/?lang=en\/#7_Summary\" >7. Summary<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 style=\"margin-top:1rem;\"><span class=\"ez-toc-section\" id=\"Summary_of_this_article\"><\/span>Summary of this article<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Checking the heartbeat during pregnancy is an essential process in knowing the health status of the fetus. Especially for those considering <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> (non-invasive prenatal testing), heartbeat confirmation is a factor that affects the timing of the test and its success or failure. In this article, we will explain in detail when it is possible to check the heartbeat, the specific method of checking, what to do if the heartbeat cannot be checked, and the progress of pregnancy after the heartbeat is confirmed.\n<\/p><\/div>\n\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Table_of_Contents\"><\/span>Table of Contents<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"single-post\">\n<div class=\"post_content\">\n<ul class=\" number \">\n<li>When heartbeat can be confirmed<\/li>\n<li>Specific method for checking heartbeat<\/li>\n<li>Causes and countermeasures when heartbeat cannot be confirmed<\/li>\n<li>Pregnancy continuation rate after heartbeat confirmation<\/li>\n<li>Relationship with <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> test<\/li>\n<li>Things to be careful after checking the heartbeat<\/li>\n<li>Summary<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_When_heartbeat_confirmation_becomes_possible\"><\/span>1. When heartbeat confirmation becomes possible<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>A fetal heartbeat is an important sign that occurs in the early stages of pregnancy.<br>The heartbeat can generally be seen on ultrasound around late 5 to 6 weeks of gestation<\/p>\n\n\n\n<p>However, the timing of confirmation may vary depending on the following factors<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Displacement of the date of ovulation or fertilization<\/strong><br>The number of weeks of pregnancy is usually calculated based on the start of the last menstrual period. However, due to individual differences in the timing of ovulation and fertilization, the confirmation of the heartbeat may be later than expected.<\/li>\n\n\n\n<li><strong>Ultrasonic Equipment Performance<\/strong><br>With the latest high-resolution ultrasound equipment, a heartbeat can often be detected as late as the fifth week of pregnancy, but the difference depends on the type of equipment.<\/li>\n<\/ul>\n\n\n\n<p><br>Studies have shown that a heartbeat is usually detectable by the sixth week of pregnancy, and ultrasound resolution and manipulation techniques affect the success rate of confirmation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Specific_Methods_of_Heart_Rate_Confirmation\"><\/span>2. Specific Methods of Heart Rate Confirmation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Heartbeat confirmation is an ultrasound performed in early pregnancy<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Transvaginal ultrasound<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Primary methods used in early pregnancy (5-12 weeks)<\/strong><\/li>\n\n\n\n<li>A probe is inserted into the vagina for a closer look inside the uterus<\/li>\n\n\n\n<li>Heartbeat can be confirmed in the second half of the 5th to 6th week of pregnancy<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Transabdominal ultrasonography<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mainly used after the second trimester (after 12 weeks)<\/li>\n\n\n\n<li>Probe is applied to the abdomen<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Causes_and_remedies_when_a_heartbeat_cannot_be_confirmed\"><\/span>3. Causes and remedies when a heartbeat cannot be confirmed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>If a heartbeat cannot be confirmed at 6 weeks gestation, the following causes are possible<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Main Causes<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Gestational week discrepancy<\/strong><br>The timing of fertilization may be delayed.<\/li>\n\n\n\n<li><strong>Equipment Limitations<br><\/strong>Older ultrasound equipment can be difficult to confirm.<\/li>\n\n\n\n<li><strong>Possibility of miscarriage<\/strong><br>If a heartbeat is not confirmed, there is a possibility of a comitted abortion.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Counter-measure<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Reinspection conducted<\/strong><br>A repeat examination is performed one to two weeks later to reconfirm fetal growth and heartbeat.<\/li>\n\n\n\n<li><strong>Consultation with a physician<br><\/strong>Follow your doctor&#8217;s instructions for the final decision.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Pregnancy_Continuation_Rate_After_Heartbeat_Confirmation\"><\/span>4. Pregnancy Continuation Rate After Heartbeat Confirmation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>When a fetal heartbeat is confirmed, the risk of subsequent miscarriage is greatly reduced. Studies show that if a heartbeat is confirmed at 8 weeks gestation, the miscarriage rate is less than 5%.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Data<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Heartbeat confirmed at 6 weeks gestation<\/strong>: approximately 16% miscarriage rate<\/li>\n\n\n\n<li><strong>Heartbeat detected at 8 weeks gestation:<\/strong> &lt;5% miscarriage rate<\/li>\n\n\n\n<li><strong>After 12 weeks<\/strong>: &lt;1% miscarriage rate<\/li>\n<\/ul>\n\n\n\n<p><br>Studies have shown a dramatic decrease in miscarriage rates after heartbeat confirmation.<\/p>\n\n\n\n\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Relevance_to_NIPT_testing\"><\/span>5. Relevance to NIPT testing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> is usually performed after 10 weeks of pregnancy, and heartbeat confirmation is an important preparatory step.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Confirmation of indications for testing<\/strong><br>A confirmed heartbeat confirms that the pregnancy is progressing normally.<\/li>\n\n\n\n<li><strong>Timing of Inspection<\/strong><br>After the heartbeat is confirmed, waiting until 10 weeks&#8217; gestation improves the accuracy of the test.<\/li>\n<\/ul>\n\n\n\n<p>For more information on <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> testing, we recommend that you consult with a specialist or clinic.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/user0514.cdnw.net\/shared\/img\/thumb\/OZP73_kensakekkawosetumeisuru20140321_TP_V.jpg\" alt=\"\" style=\"width:570px;height:auto\"\/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Be_careful_after_confirming_heartbeat\"><\/span>6. Be careful after confirming heartbeat<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Even after a heartbeat is confirmed, the early stages of pregnancy should be carefully monitored.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Avoid excessive exercise and stress<\/li>\n\n\n\n<li>Consult a doctor immediately if you experience bleeding or abdominal pain<\/li>\n\n\n\n<li>Undergo regular antenatal checkups<\/li>\n<\/ul>\n\n\n\n<p>Especially in the early stages of pregnancy, it is important to take it easy and get some rest because of morning sickness and physical changes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_Summary\"><\/span>7. Summary<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Heartbeat confirmation is an important step in confirming the health of the fetus and the progress of the pregnancy.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Heartbeat can be confirmed at 5-6 weeks gestation<\/li>\n\n\n\n<li>Miscarriage rate drops significantly after heartbeat confirmation<\/li>\n\n\n\n<li>Heart rate confirmation is also important as a preparatory step for <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> testing<\/li>\n<\/ul>\n\n\n\n<p>Pregnancy is a time of much anxiety, but you should feel comfortable working with your doctor based on accurate information.<\/p>\n\n\n\n\n\n\n<p><strong>Evidence Reference Links<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/26449398\/\">Ultrasound and Early Fetal Cardiac Activity<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC5471675\/\">Early Pregnancy Loss and Fetal Cardiac Activity<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"Summary of this arti&#8230;\n <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/fetal-heartbeat-timing\/?lang=en\">\u7d9a\u304d\u3092\u8aad\u3080<\/a>","protected":false},"author":71,"featured_media":84938,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[97],"tags":[],"class_list":["post-85820","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts\/85820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/users\/71"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/comments?post=85820"}],"version-history":[{"count":4,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts\/85820\/revisions"}],"predecessor-version":[{"id":86055,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts\/85820\/revisions\/86055"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/media\/84938"}],"wp:attachment":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/media?parent=85820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/categories?post=85820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/tags?post=85820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}