{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,17]],"date-time":"2026-07-17T22:44:57Z","timestamp":1784328297608,"version":"3.55.0"},"reference-count":32,"publisher":"BMJ","issue":"3","license":[{"start":{"date-parts":[[2020,3,16]],"date-time":"2020-03-16T00:00:00Z","timestamp":1584316800000},"content-version":"unspecified","delay-in-days":15,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2020,2,24]]},"published-print":{"date-parts":[[2020,3]]},"abstract":"<jats:sec>\n                  <jats:title>Objective<\/jats:title>\n                  <jats:p>We evaluated the association between the presence of predelivery uterine contractions and transient tachypnoea of the newborn (TTN) in women undergoing an elective caesarean section.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Design<\/jats:title>\n                  <jats:p>A retrospective cohort study.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Setting<\/jats:title>\n                  <jats:p>National Hospital Organization Kofu National Hospital, which is a community hospital, between January 2011 and May 2019.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Participants<\/jats:title>\n                  <jats:p>The study included 464 women who underwent elective caesarean section. The exclusion criteria were missing data, twin pregnancy, neonatal asphyxia, general anaesthesia and elective caesarean section before term.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Primary and secondary outcome measures<\/jats:title>\n                  <jats:p>Patients were grouped according to the presence or absence of uterine contractions on a 40-min cardiotocogram (CTG) performed within 6\u2009hours before caesarean delivery. We performed a multivariable logistic regression analysis to examine the association between predelivery uterine contractions and TTN.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>The incidence of TTN was 9.9% (46\/464), and 38.4% (178\/464) of patients had no uterine contraction. The absence of uterine contractions was significantly associated with an increased risk of TTN (adjusted OR 2.04; 95% CI 1.09 to 3.82) after controlling for gestational diabetes mellitus, small for gestational age, male sex and caesarean section at 37 weeks.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>Accurate risk stratification using a CTG could assist in the management of infants who are at risk of developing TTN.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1136\/bmjopen-2019-033154","type":"journal-article","created":{"date-parts":[[2020,3,17]],"date-time":"2020-03-17T05:09:25Z","timestamp":1584421765000},"page":"e033154","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":6,"title":["Association between uterine contractions before elective caesarean section and transient tachypnoea of the newborn: a retrospective 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