Opportunities for infrared thermometry in predicting obstetric perineal rupture
https://doi.org/10.17749/2313-7347/ob.gyn.rep.2020.134
Abstract
Materials and Methods. There was conducted a prospective analysis of 40 childbirth cases recorded in 2019-2020. There were stratified 2 study groups: Group 1 included 30 women without perineal injuries; Group 2 - 10 women with obstetric perineal rupture. Infrared thermometry in the posterior perineal junction projection was performed during the second period of labor at two timepoints: 1 - onset of the second labor period; 2 - descent of fetal head parietal tubercles.
Results. The temperature difference between the first and second timepoints in Group 1 was 1.8 [1.71; 1.99] °C, in Group 2 - 2.7 [2.42; 2.82] °C (U = 54.000, p = 0.002). The rate of perineal temperature decline > 2.0 °C in Group 1 was 20 % (6/30), in Group 2 - 80 % (8/10) of cases (х2 = 11.868; p = 0.001). Such observation exhibited relatively high strength of relationship (V = 0.545). It is noteworthy that if perineal temperature decline at least by 2.0 °C for 2 minutes from descent of fetal head parietal tubercles to full birth of fetal head, the perineal rupture occurred in 100 % of cases (х2 = 7.556; p = 0.006), also featured with relatively high strength (V = 0.435).
Conclusion. Perineal skin temperature decline at least by 2.0 °C for 2 minutes or more from descent of fetal head parietal tubercles may potentially be used as a criterion justifying episiotomy.
About the Authors
A. M. ZiganshinRussian Federation
Aydar M. Ziganshin - MD, PhD, Associate Professor, Department of Obstetrics and Gynecology with the Course of Additional and Professional Education, Bashkir State Medical University.
3 Lenin Str., Ufa 450008.
V. A. Mudrov
Russian Federation
Viktor A. Mudrov - MD, PhD, Associate Professor, Department of Obstetrics and Gynecology, Medical and Dental faculties, Chita State Medical Academy.
39a Gorkogo Str., Chita 672090.
A. Yu. Mironenko
Russian Federation
Anastasia Yu. Mironenko - MD, Assistant, Department of Obstetrics and Gynecology, Medical and Dental Faculties, Chita State Medical Academy.
39a Gorkogo Str., Chita 672090.
V. A. Kulavskiy
Russian Federation
Vasiliy A. Kulavskiy - MD, Dr Sci Med, Professor, Department of Obstetrics and Gynecology with the Course of Additional and Professional Education, Bashkir State Medical University.
3 Lenin Str., Ufa 450008.
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Review
For citations:
Ziganshin A.M., Mudrov V.A., Mironenko A.Yu., Kulavskiy V.A. Opportunities for infrared thermometry in predicting obstetric perineal rupture. Obstetrics, Gynecology and Reproduction. 2020;14(5):577-586. (In Russ.) https://doi.org/10.17749/2313-7347/ob.gyn.rep.2020.134

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