{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T20:52:51Z","timestamp":1792788771217,"version":"4.5.0"},"reference-count":64,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"9","license":[{"start":{"date-parts":[[2025,7,14]],"date-time":"2025-07-14T00:00:00Z","timestamp":1752451200000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"name":"ZonMW MKMD Synthesis of Evidence","award":["114024176"],"award-info":[{"award-number":["114024176"]}]},{"name":"Nierstichting","award":["24OSR032"],"award-info":[{"award-number":["24OSR032"]}],"id":[{"id":"https:\/\/ror.org\/020k6v967","id-type":"ROR","asserted-by":"crossref"}]}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":["CJASN"],"published-print":{"date-parts":[[2025,9]]},"abstract":"<jats:sec>\n                    <jats:title>Key Points<\/jats:title>\n                    <jats:p>\n                      <jats:list list-type=\"bullet\">\n                        <jats:list-item>\n                          <jats:p>Outcomes for women with mild CKD are reassuring: Pregnancy does not impair long-term kidney function in mild CKD.<\/jats:p>\n                        <\/jats:list-item>\n                        <jats:list-item>\n                          <jats:p>Women with advanced CKD should be informed on risks of losing prepregnancy kidney function in pregnancy.<\/jats:p>\n                        <\/jats:list-item>\n                        <jats:list-item>\n                          <jats:p>Animal studies support clinical findings in mild CKD and offer insights in the potential underlying mechanistics.<\/jats:p>\n                        <\/jats:list-item>\n                      <\/jats:list>\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>\n                      Pregnancy may accelerate kidney function decline in women with CKD, particularly in advanced stages. Some clinicians may therefore advise against pregnancy. Exact effect of pregnancy and subgroup risks (\n                      <jats:italic toggle=\"yes\">e.g<\/jats:italic>\n                      ., for patients with proteinuria or hypertension) are still uncertain. For patients with CKD who wish to conceive, establishing the effect of pregnancy and identifying those at risk for progression is crucial.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We conducted a systematic review and meta-analysis in human and animal studies separately, synthesizing all available evidence on long-term kidney function after pregnancy in women with preexisting CKD. Primary outcome was standardized mean difference (SMD) in kidney function before versus after pregnancy. For clinical implications, we calculated mean GFR differences. Secondary outcomes were incidences of kidney failure\/KRT after delivery and kidney function deterioration. Subanalyses stratified studies as mild versus advanced CKD if studies had \u226425% versus &gt;25% of participants CKD stage 3\u20135 (unless cohorts defined otherwise) and chronic hypertension as &lt;25% versus &gt;25% of participants having chronic hypertension.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      We analyzed 36 human studies including 2945 patients, 4623 pregnancies, and 12 animal studies. Pregnancy had no effect on long-term kidney function in mild CKD cohorts (SMD, \u22120.22 [\u22120.56 to 0.13]) over a mean follow-up of 4.4 (SD 0.7) years. However, kidney function was significantly lower after pregnancy in advanced CKD cohorts (SMD, \u22120.55 [\u22120.80 to \u22120.30]), pooled eGFR decline \u22128.96 ml\/min (\u221217.4 to \u22120.48), mean follow-up 2.6 years. Chronic hypertension affected overall SMD (\n                      <jats:italic toggle=\"yes\">\u03b2<\/jats:italic>\n                      =\u22120.01 [\u22120.02 to \u22120.001],\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.03). Pooled kidney failure\/KRT incidence was 9%, with a mean follow-up 6.5 of years. Pregnancy did not affect kidney function after delivery in animal nephropathy models.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The results for patients with mild CKD are reassuring as pregnancy does not affect long-term kidney function. Animal studies support clinical findings in mild CKD and offer insights in the potential underlying mechanisms. Patients with advanced CKD should be informed on risking kidney function decline in pregnancy. Studies including eGFR-slopes prepregnancy and postpregnancy are scarce, limiting understanding of pregnancy's impact next to natural disease progression in advanced CKD. This highlights the need for future research including multiple eGFR measurements over time.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.2215\/cjn.0000000769","type":"journal-article","created":{"date-parts":[[2025,7,14]],"date-time":"2025-07-14T22:00:32Z","timestamp":1752530432000},"page":"1190-1205","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":3,"title":["Pregnancy and Long-Term Kidney Function in CKD"],"prefix":"10.2215","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7682-3685","authenticated-orcid":false,"given":"Margriet E.","family":"Gosselink","sequence":"first","affiliation":[{"name":"Department of Genetics, University Medical Centre Utrecht, Utrecht, The Netherlands"},{"name":"Department of Obstetrics and Gynaecology, Wilhelmina Children's Hospital Birth Centre, University Medical Centre Utrecht, Utrecht, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-5201-1285","authenticated-orcid":false,"given":"Jolijn M.M.","family":"Sluijters","sequence":"additional","affiliation":[{"name":"Department of Genetics, University Medical Centre Utrecht, Utrecht, The Netherlands"},{"name":"Department of Obstetrics and Gynaecology, Wilhelmina Children's Hospital Birth Centre, University Medical Centre Utrecht, Utrecht, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6892-3168","authenticated-orcid":false,"given":"Rozemarijn","family":"Snoek","sequence":"additional","affiliation":[{"name":"Department of Genetics, University Medical Centre Utrecht, Utrecht, The Netherlands"},{"name":"Department of Obstetrics and Gynaecology, Wilhelmina Children's Hospital Birth Centre, University Medical Centre Utrecht, Utrecht, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Albertien M.","family":"van Eerde","sequence":"additional","affiliation":[{"name":"Department of Genetics, University Medical Centre Utrecht, Utrecht, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3635-3660","authenticated-orcid":false,"given":"Kimberley E.","family":"Wever","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology, Pain and Palliative Medicine, Radboud University Medical Center, Nijmegen, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6356-7707","authenticated-orcid":false,"given":"A. Titia","family":"Lely","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynaecology, Wilhelmina Children's Hospital Birth Centre, University Medical Centre Utrecht, Utrecht, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2025,7,14]]},"reference":[{"issue":"11","key":"B1-20261014","doi-asserted-by":"crossref","first-page":"415","DOI":"10.3390\/jcm7110415","article-title":"Pregnancy in chronic kidney disease: need for higher awareness. 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