{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T13:30:07Z","timestamp":1790861407456,"version":"4.1.0"},"reference-count":21,"publisher":"Elsevier BV","issue":"2","license":[{"start":{"date-parts":[[2009,4,1]],"date-time":"2009-04-01T00:00:00Z","timestamp":1238544000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["International Journal of Obstetric Anesthesia"],"published-print":{"date-parts":[[2009,4]]},"DOI":"10.1016\/j.ijoa.2008.09.006","type":"journal-article","created":{"date-parts":[[2009,1,21]],"date-time":"2009-01-21T20:10:08Z","timestamp":1232568608000},"page":"118-124","source":"Crossref","is-referenced-by-count":8,"title":["The effects of meperidine and epidural analgesia in labor on maternal heart rate variability"],"prefix":"10.1016","volume":"18","author":[{"given":"A.","family":"Weissman","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"O.","family":"Torkhov","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.I.","family":"Weissman","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Drugan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.ijoa.2008.09.006_bib1","doi-asserted-by":"crossref","first-page":"S16","DOI":"10.1016\/S0002-9378(02)70179-8","article-title":"The nature of labor pain","volume":"186","author":"Lowe","year":"2002","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ijoa.2008.09.006_bib2","unstructured":"Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology. Heart rate variability. Standards of measurement, physiological interpretation, and clinical use. Circulation 1996; 93: 1043\u201365."},{"key":"10.1016\/j.ijoa.2008.09.006_bib3","doi-asserted-by":"crossref","first-page":"220","DOI":"10.1126\/science.6166045","article-title":"Power spectrum analysis of heart rate fluctuation: a quantitative probe of beat-to-beat cardiovascular control","volume":"213","author":"Akselrod","year":"1981","journal-title":"Science"},{"key":"10.1016\/j.ijoa.2008.09.006_bib4","doi-asserted-by":"crossref","first-page":"2297","DOI":"10.1073\/pnas.88.6.2297","article-title":"Approximate entropy as a measure of system complexity","volume":"88","author":"Pincus","year":"1991","journal-title":"Proc Nat Acad Sci"},{"key":"10.1016\/j.ijoa.2008.09.006_bib5","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1111\/j.1445-5994.1995.tb00573.x","article-title":"Application of the Poincar\u00e9 plot to heart rate variability: a new measure of functional status in heart failure","volume":"25","author":"Kamen","year":"1995","journal-title":"Aust NZ J Med"},{"key":"10.1016\/j.ijoa.2008.09.006_bib6","doi-asserted-by":"crossref","first-page":"571","DOI":"10.2337\/diacare.29.03.06.dc05-2009","article-title":"Power spectral analysis of heart rate variability during the 100-g oral glucose tolerance test in pregnant women","volume":"29","author":"Weissman","year":"2006","journal-title":"Diabetes Care"},{"key":"10.1016\/j.ijoa.2008.09.006_bib7","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1159\/000151754","article-title":"Effect of phototherapy on neonatal heart rate variability and complexity","volume":"95","author":"Weissman","year":"2009","journal-title":"Neonatology"},{"key":"10.1016\/j.ijoa.2008.09.006_bib8","doi-asserted-by":"crossref","first-page":"1342","DOI":"10.1109\/10.959330","article-title":"Do existing measures of Poincar\u00e9 plot geometry reflect nonlinear features of heart rate variability?","volume":"48","author":"Brennan","year":"2001","journal-title":"IEEE Trans Biomed Eng"},{"key":"10.1016\/j.ijoa.2008.09.006_bib9","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1097\/00045391-200201000-00010","article-title":"Meperidine: A critical review","volume":"9","author":"Latta","year":"2002","journal-title":"Am J Ther"},{"key":"10.1016\/j.ijoa.2008.09.006_bib10","doi-asserted-by":"crossref","first-page":"2051","DOI":"10.1016\/S0140-6736(99)03313-9","article-title":"Acute pain","volume":"353","author":"Carr","year":"1999","journal-title":"Lancet"},{"key":"10.1016\/j.ijoa.2008.09.006_bib11","first-page":"315","article-title":"Sympathovagal effects of spinal anesthesia assessed by heart rate variability analysis","volume":"80","author":"Introna","year":"1995","journal-title":"Anesth Analg"},{"key":"10.1016\/j.ijoa.2008.09.006_bib12","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1097\/00000542-200407000-00006","article-title":"Autonomic nervous system response to epidural analgesia in laboring patients by wavelet transform of heart rate and blood pressure variability","volume":"101","author":"Deschamps","year":"2004","journal-title":"Anesthesiology"},{"key":"10.1016\/j.ijoa.2008.09.006_bib13","first-page":"189","article-title":"Analysis of heart rate dynamics as a measure of autonomic tone in obstetrical patients undergoing epidural or spinal anesthesia","volume":"19","author":"Landry","year":"1994","journal-title":"Reg Anesth"},{"key":"10.1016\/j.ijoa.2008.09.006_bib14","doi-asserted-by":"crossref","first-page":"23","DOI":"10.1016\/S0197-4580(01)00266-4","article-title":"What is physiologic complexity and how does it change with aging and disease?","volume":"23","author":"Goldberger","year":"2002","journal-title":"Neurobiol Aging"},{"key":"10.1016\/j.ijoa.2008.09.006_bib15","doi-asserted-by":"crossref","first-page":"333","DOI":"10.1016\/S0029-7844(03)00567-2","article-title":"A comparison of the effects of epidural and meperidine analgesia during labor on fetal heart rate","volume":"102","author":"Hill","year":"2003","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ijoa.2008.09.006_bib16","first-page":"249","article-title":"Approximate entropy: a regularity measure for fetal heart rate analysis","volume":"79","author":"Pincus","year":"1992","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ijoa.2008.09.006_bib17","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1016\/j.ejogrb.2005.11.033","article-title":"Effect of pethidine administered during the first stage of labor on the acid-base status at birth","volume":"129","author":"Sosa","year":"2006","journal-title":"Eur J Obstet Gynecol Reprod Biol"},{"key":"10.1016\/j.ijoa.2008.09.006_bib18","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1016\/S0029-7844(97)00177-4","article-title":"Risk factors for acidemia at birth","volume":"90","author":"Herbst","year":"1997","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ijoa.2008.09.006_bib19","doi-asserted-by":"crossref","first-page":"5","DOI":"10.1046\/j.1523-536x.2001.00005.x","article-title":"Maternal analgesia during labor disturbs newborn behavior: effects on breastfeeding, temperature, and crying","volume":"28","author":"Ransjo-Arvidson","year":"2001","journal-title":"Birth"},{"key":"10.1016\/j.ijoa.2008.09.006_bib20","doi-asserted-by":"crossref","first-page":"495","DOI":"10.1097\/00003081-198709000-00005","article-title":"Systemic analgesics during labor","volume":"30","author":"Spielman","year":"1987","journal-title":"Clin Obstet Gynecol"},{"key":"10.1016\/j.ijoa.2008.09.006_bib21","doi-asserted-by":"crossref","first-page":"839","DOI":"10.1016\/S0022-3565(24)36852-1","article-title":"Promethazine affects autonomic cardiovascular mechanisms minimally","volume":"282","author":"Brown","year":"1997","journal-title":"J Pharmacol Exp Ther"}],"container-title":["International Journal of Obstetric Anesthesia"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0959289X08001556?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0959289X08001556?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,2,7]],"date-time":"2025-02-07T03:12:33Z","timestamp":1738897953000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0959289X08001556"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,4]]},"references-count":21,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2009,4]]}},"alternative-id":["S0959289X08001556"],"URL":"https:\/\/doi.org\/10.1016\/j.ijoa.2008.09.006","relation":{},"ISSN":["0959-289X"],"issn-type":[{"value":"0959-289X","type":"print"}],"subject":[],"published":{"date-parts":[[2009,4]]}}}