Factors predicting delaying in preterm birth among women who received tocolysis

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ชมพูนุช โสภาจารีย์ อรทัย สิงห์คำ


Objective: To identify predictive factors in delaying preterm birth among women
who received tocolysis.
Design: Descriptive-predictive study.
Procedure: This study was conducted on 153 women recruited by means of convenient
sampling. The participants, all of whom had spontaneous preterm labour, were treated
in a labour and delivery unit and were given tocolysis to inhibit preterm birth. Data were
collected using a personal information questionnaire, a pregnancy and maternal care
questionnaire, and an anxiety questionnaire. All of the questionnaires were validated
by experts and had a content validity index of 1.00, whilst the anxiety questionnaire had
a reliability index of 0.82. Hierarchical multiple regression was used for data analysis.
Results: The predictive factors identifed consisted of childbirth-related factors
(i.e., length of labour pain prior to hospitalisation, cervical effacement, duration of
spontaneous prior to hospitalisation, and interval of uterine contraction), a psychosocial
factor (i.e., anxiety), and personal factors (i.e., maternal age and pre-pregnancy BMI). These
factors were able to predict 78.30% of delaying in preterm birth (F = 26.80, p < .001).
Cervical effacement was identifed as the most powerful predictive factor (Beta = -0.94,
t = -13.24, p < .001), followed by the duration of spontaneous ruptured membranes prior
to hospitalisation (Beta = -0.30, t = -4.26, p < .001), interval of uterine contraction
(Beta = 0.22, t = 3.17, p < .01), and anxiety (Beta = -0.23, t = 3.21, p < .01). On the
other hand, length of labour pain prior to hospitalisation, maternal age, and pre-pregnancy
BMI were not found to have signifcant predictive power (p > 0.05).
Recommendations: Both nurses and pregnant women play an important role in
the delaying in preterm birth. Nurses should, therefore, advise pregnant women to
assess their uterine contraction and decide to go to hospital before the contraction becomes
more frequent that it may cause spontaneous rupture of membranes. In addition, during
hospitalisation, nurses should assess and plan to reduce pregnant women’s anxiety in
order to delay preterm birth.


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โสภาจารีย์ช, สิงห์คำอ. Factors predicting delaying in preterm birth among women who received tocolysis. Thai Journal of Nursing Council [Internet]. 2Aug.2018 [cited 19Aug.2018];33(2):47-8. Available from: https://www.tci-thaijo.org/index.php/TJONC/article/view/125670
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