The Valsalva maneuver duration during labor expulsive stage: repercussions on the maternal and neonatal birth condition
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| Format: | Artículo científico |
| Sprache: | en |
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Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia
2011
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| _version_ | 1876441403086602240 |
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| author | Andrea Lemos |
| author_facet | Andrea Lemos |
| contents | The Valsalva maneuver duration during labor expulsive stage: repercussions on the maternal and neonatal birth condition Andrea Lemos Elizabeth Dean Armèle Dornelas de Andrade Salud pushing "labour obstetric" umbilical cord Valsalva maneuver OBJECTIVES: This cross-sectional study was designed to examine the effects of the Valsalva Maneuver (VM) and its duration on the acid- base equilibrium of the neonate and its maternal repercussions during the expulsive stage of labor, after standard breathing and pushing instructions were given. METHODS: A convenience sample of women with low risk pregnancy (n=33; mean age 22.5±3.7y and gestational age 38.1±1.12wks) and their newborns were studied during the expulsive stage of vaginal labor. Coaching consisted of standard recommendations for breathing including prolonged VMs coordinated with pushing. Maternal outcomes included the need for uterus fundal pressure maneuver and episiotomy, perineal trauma and posture. Neonatal outcomes included blood gases sampled from the umbilical cord, and Apgar scores. Data were analyzed with the Fisher's exact test, chi-square test, and Pearson correlation coefficient. RESULTS: None of the maternal outcomes were associated with VM duration. With respect to neonatal outcomes, increased VM duration was associated with reduced venous umbilical pH (r=-0.40; p=0.020), venous base excess (r=-0.42; p=0.014) and with arterial base excess (r=-0.36; p=0.043). Expulsive stage time was negatively associated with umbilical venous and arterial pH. CONCLUSIONS: VM duration during fetal expulsion in labor negatively affects fetal acid-base equilibrium and potentially the wellbeing of the neonate. Our results support the need to consider respiratory strategies during labor, to minimize potential risk to the mother and neonate. 2011 artículo científico 1413-3555 https://www.redalyc.org/articulo.oa?id=235019132007 en http://www.redalyc.org/revista.oa?id=2350 Revista Brasileira de Fisioterapia application/pdf Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia Revista Brasileira de Fisioterapia (Brasil) Num.1 Vol.15 |
| format | Artículo científico |
| id | redalyc_235019132007 |
| institution | Redalyc |
| language | en |
| publishDate | 2011 |
| publisher | Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia |
| spellingShingle | The Valsalva maneuver duration during labor expulsive stage: repercussions on the maternal and neonatal birth condition Andrea Lemos Salud pushing "labour obstetric" umbilical cord Valsalva maneuver The Valsalva maneuver duration during labor expulsive stage: repercussions on the maternal and neonatal birth condition Andrea Lemos Elizabeth Dean Armèle Dornelas de Andrade Salud pushing "labour obstetric" umbilical cord Valsalva maneuver OBJECTIVES: This cross-sectional study was designed to examine the effects of the Valsalva Maneuver (VM) and its duration on the acid- base equilibrium of the neonate and its maternal repercussions during the expulsive stage of labor, after standard breathing and pushing instructions were given. METHODS: A convenience sample of women with low risk pregnancy (n=33; mean age 22.5±3.7y and gestational age 38.1±1.12wks) and their newborns were studied during the expulsive stage of vaginal labor. Coaching consisted of standard recommendations for breathing including prolonged VMs coordinated with pushing. Maternal outcomes included the need for uterus fundal pressure maneuver and episiotomy, perineal trauma and posture. Neonatal outcomes included blood gases sampled from the umbilical cord, and Apgar scores. Data were analyzed with the Fisher's exact test, chi-square test, and Pearson correlation coefficient. RESULTS: None of the maternal outcomes were associated with VM duration. With respect to neonatal outcomes, increased VM duration was associated with reduced venous umbilical pH (r=-0.40; p=0.020), venous base excess (r=-0.42; p=0.014) and with arterial base excess (r=-0.36; p=0.043). Expulsive stage time was negatively associated with umbilical venous and arterial pH. CONCLUSIONS: VM duration during fetal expulsion in labor negatively affects fetal acid-base equilibrium and potentially the wellbeing of the neonate. Our results support the need to consider respiratory strategies during labor, to minimize potential risk to the mother and neonate. 2011 artículo científico 1413-3555 https://www.redalyc.org/articulo.oa?id=235019132007 en http://www.redalyc.org/revista.oa?id=2350 Revista Brasileira de Fisioterapia application/pdf Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia Revista Brasileira de Fisioterapia (Brasil) Num.1 Vol.15 |
| title | The Valsalva maneuver duration during labor expulsive stage: repercussions on the maternal and neonatal birth condition |
| topic | Salud pushing "labour obstetric" umbilical cord Valsalva maneuver |
| url | https://www.redalyc.org/articulo.oa?id=235019132007 |