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Revista chilena de obstetricia y ginecología

versão On-line ISSN 0717-7526

Resumo

MERINO U, Waldo; VILLAGRAN S, Milca; NOVOA R, Romina  e  ORELLANA C, Juan. Descripción de la Cronología del Dolor de las Contracciones Uterinas para Analgesia del Trabajo de Parto, una tarea pendiente. Rev. chil. obstet. ginecol. [online]. 2017, vol.82, n.2, pp.163-170. ISSN 0717-7526.  http://dx.doi.org/10.4067/S0717-75262017000200010.

Aim: To describe the timing of the moment of maximum intensity of uterine contraction (UC) pain in labor to possibly enable the development of new models for administering endovenous analgesia. Materials and Methods: Full-term pregnant women in labor, recruited from March 2014 for 18 months, using consecutive nonprobability sampling. The moment of maximum pain was ascertained as self-reported by patients previously trained with chronometers. Analysis: Regression for repeated measurements from mixed results at 3-5, 6-7 and 8-10cm of dilation. The response variable was the time interval from the moment of maximum pain of the baseline UC to the following contraction. Results: In 64 patients, 5 time intervals were obtained. For the dilation of 3-5cm, a median=140.92 seconds and regression coefficients (RC) in 4 time intervals relative to the baseline of 4.2, 15.9, -2.7 and -5.8 seconds. For 6-7cm, a median =131.16 sec and RC 13.4, 11.3, 2 and -10 sec. For 8-10cm, a median =129.3 sec and RC -6.7, 0.49, -2.5 and -7.7 sec. There were no significant differences among the regression coefficients. Conclusions: With the data collected we can report that there were no statistically significant differences between the time intervals of the moments of maximum pain during active labor. This information is relevant to support the development of a predictive model for this pain.

Palavras-chave : Labor; labor pain; labor analgesia; analgesia; patient-controlled intravenous analgesia (PCIA); remifentanil; forecasting model.

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