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There are many factors which may affect uterine contraction, this study aims to explore the risk factors of uterine contraction triggered by ureteroscopy in pregnant women with renal colic.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>One hundred and one pregnant women were retrospectively analyzed, the patients were hospitalized because of severe renal colic. All patients received ureteroscopy during which double J catheters were inserted into ureters for drainage. Patients received other medical treatments individually according to their condition and uterine contractions were detected by EHG within 12\u00a0h after operation. Patients were classified as group A (uterine contraction) and group B (no uterine contraction) according to the presence or absence of continuously regular uterine contraction. Clinical characteristics were collected for further analysis, including history of childbirth, anesthesia method, application of phloroglucinol or not, operation time, Oxygen inhalation or not, pain relief or not after surgery, systemic inflammatory response syndrome (SIRS) occurred or not. A binary logistic regression analysis model was established to explore whether such clinical characteristics were relevant to uterine contraction after ureteroscopy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Continuously regular uterine contraction presented in 46 pregnant women within 12\u00a0h after ureteroscopy, making the incidence of uterine contraction as high as 45.54%. The presence of uterine contraction was related to the following factors(\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&lt;\u20090.05): history of childbirth (primipara versus multipara)(OR 6.593, 95% CI 2.231\u201319.490), operation time (each quarter additional) (OR 2.385, 95% CI 1.342\u20134.238), application of phloroglucinol (yes versus not) (OR 6.959, 95% CI 1.416\u201334.194), pain relief after surgery(yes versus not)(OR 6.707, 95% CI 1.978\u201322.738), SIRS occurred after surgery (yes versus not) (OR 0.099, 95% CI 0.014\u20130.713).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Continuously regular uterine contraction is easy to occur within 12\u00a0h after ureteroscopy in pregnant women. SIRS occurred after surgery is a risk factor for uterine contraction; on the contrary, no history of childbirth, shorter operation time, application of phloroglucinol, pain relief after surgery are protective factors.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s11255-021-02932-5","type":"journal-article","created":{"date-parts":[[2021,7,5]],"date-time":"2021-07-05T14:02:45Z","timestamp":1625493765000},"page":"1987-1993","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Risk factors of uterine contraction after ureteroscopy in pregnant women with renal colic"],"prefix":"10.1007","volume":"53","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4212-2386","authenticated-orcid":false,"given":"Chunjing","family":"Li","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liwen","family":"Guo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mi","family":"Luo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mingjuan","family":"Guo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jierong","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shilin","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guoqing","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,7,5]]},"reference":[{"issue":"12","key":"2932_CR1","doi-asserted-by":"publisher","first-page":"1462","DOI":"10.1016\/j.crad.2015.09.002","volume":"70","author":"G Masselli","year":"2015","unstructured":"Masselli G, Weston M, Spencer J (2015) The role of imaging in the diagnosis and management of renal stone disease in pregnancy. 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