Children

The Incidence of and Predictors for Severe Perineal Trauma and Intact Perineum in Women Having a Waterbirth in England: A Hospital-Based Study (2021)

Posted on by

Type of publication:
Journal article

Author(s):
*Dimitrios Papoutsis, Angeliki Antonakou, *Adam Gornall, and Chara Tzavara

Citation:
Journal of Women's Health; May 2021; vol. 30 (no. 5); p. 681-688

Abstract:
Background: To determine the incidence of and predictors for obstetric anal sphincter injuries (OASIS) and intact perineum in women giving birth in the water and compare with the general obstetric population.
Materials and Methods: Data were retrospectively collected for women who had singleton cephalic presentation vaginal births in the water and the general obstetric population between August 2007 and December 2017.
Results: We identified 1,007 women who had a waterbirth and 36,924 women from the general obstetric population. There was no significant difference in the incidence of OASIS between waterbirths and the general obstetric population (2.3% vs. 2.0%). Having a waterbirth was associated with a lower probability for an intact perineum (odds ratio [OR] = 0.83; confidence interval [95% CI]: 0.73–0.94) when compared with the general obstetric population (44.7% vs. 51.3%). Nulliparous women with a waterbirth when compared with multiparous women had an eightfold higher likelihood for the occurrence of OASIS (OR = 8.28; 95% CI: 2.64–25.86). The risk for a higher degree of OASIS was associated with increased maternal age in the total sample (OR = 1.08; 95% CI: 1.06–1.11) and with a lower body mass index (BMI) at booking in multiparous women (OR = 0.96; 95% CI: 0.92–0.99). The risk for any type of perineal trauma was associated with increased maternal age in the total sample (OR = 1.10; 95% CI: 1.07–1.13) and with a lower BMI at booking in multiparous women (OR = 0.95; 95% CI: 0.91–0.99).
Conclusions: We found that giving birth in the water reduced the chance of having an intact perineum. We have also shown that nulliparity, increased maternal age in all women, and a lower BMI at booking in multiparous were associated with OASIS and lower rates of intact perineum in waterbirths.

Link to full-text [no password required]

Effect of hyperventilation on rate corrected QT interval of children (2013)

Posted on by

Type of publication:
Journal article

Author(s):
*A Kannivelu, V Kudumula, V Bhole

Citation:
Archives of Disease in Childhood. 2013 Feb;98(2):103-6

Abstract:
BACKGROUND: Hyperventilation is known to cause ST segment changes and QT variability in adults, but this has not been systematically studied in children.
AIM: To investigate the effect of hyperventilation on rate corrected QT interval (QTc) in children.
METHODS AND RESULTS: 25 children (male=10) with a median age of 14 (range 8.3-17.6) years were asked to hyperventilate for 1 min before exercise testing using the modified Bruce protocol. Mean QTc at rest, after hyperventilation, at peak exercise and at 1 min of recovery was 425(±31), 460(±30), 446(±38) and 420(±32) ms, respectively. Mean increase (95% CI) in QTc after hyperventilation was 35(19 to 51) ms (p<0.001), while there was minimal difference between QT interval at rest and after hyperventilation (mean QT 352(±41) vs 357(±44) ms). In six children, there were abnormalities in T wave morphology following hyperventilation. The QTc increment following hyperventilation was more pronounced in children with resting QTc <440 ms (n=14, mean increment (95% CI): 55 (33 to 78) ms) compared to children with QTc ≥440 ms (n=11, mean increment (95% CI): 9 (-4 to 22) ms) (p=0.001). QTc prolongation following hyperventilation was seen in children with both low and intermediate probability of long QT syndrome (LQTS). Peak exercise and early recovery did not cause a statistically significant change in QTc in either of these groups.
CONCLUSIONS: Hyperventilation produces repolarisation abnormalities, including prolongation of QTc and T wave abnormalities in children with low probability of LQTS. The likely mechanism is delayed adaptation of QT interval with increased heart rate. Thus, a hyperventilation episode can be misdiagnosed as LQTS, especially in an emergency department.

Link to more details or full-text: http://adc.bmj.com/content/early/2012/12/13/archdischild-2012-302663.full.pdf