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Obstetric injuries affect impact and severity of anal incontinence two decades later
Sweden: Researchers from Sweden observed a consistent additive effect of 1 or 2 sphincter injuries on the impact and severity of anal incontinence in women 20 years after two vaginal births. The study, published in the American Journal of Obstetrics and Gynecology, comprised more than 11,000 women who had given birth vaginally in Sweden twice between 1987 and 2000.
The results showed that the severity and impact of anal incontinence doubled and quadrupled in women with 1 or 2 consecutive sphincter injuries, respectively, compared with those without injury. The second sphincter injury had an equally large additive effect compared to the first injury. However, the study found that 1 or 2 sphincter injuries did not affect other pelvic floor disorders or lower urinary tract symptoms compared to women without injury.
This study investigated the long-term severity and subjective impact of anal incontinence among women who had experienced 1 or 2 consecutive obstetrical anal sphincter injuries compared with those without injuries. The study used prospectively registered data and a questionnaire to analyze outcomes, including the frequency of faecal and gas incontinence, the impact on daily life, and the effect on other pelvic floor disorders.
Bowel leakage, the need for anal incontinence protection and a restricted social life may cause severe, decades-long suffering among women with obstetric injuries to the anal opening, according to a study from the University of Gothenburg.
The researchers have previously described how the risk of accidental bowel leakage increases after obstetric anal sphincter injuries (OASIs) during childbirth. The present study focuses on the severity of these problems and their potential impact on women’s lives two decades later.
Three groups were studied: women with no anal sphincter injuries, those who incurred the OASI during one of the births, and those with an OASI both times they gave birth. The data analysed came from the Swedish National Birth Register and replies to a questionnaire concerning the women’s symptoms of bowel leakage and the psychological impact and effect on the social life of incontinence after 20 years.
Problems increase with the number of injuries
Of the women with two OASIs, 10.5 percent report leakage of liquid faeces two times or more monthly; this is categorized in the study as high-frequency anal incontinence. When women with low-frequency incontinence are included, the proportion is 34.9 percent. Of all the women with two injuries, 29.6 percent state that leakage affects their everyday life.
The results thereafter follow a descending scale. Of the women with one anal sphincter injury, 6.4 percent report high-frequency leakage and 21.7 percent high and low frequency leakage. For 19.7 percent of the latter, the injury affects their everyday life. Of the women with no OASI, 2.7 percent report high-frequency leakage and 10.8 percent either high- or low-frequency leakage, while 8.6 percent report that the incontinence impacts everyday life.
In terms of the severity of these problems, going from no injury to one injury is roughly equivalent to the step from one to two injuries. Thus, the problems are cumulative, and this is also reflected in the women’s subjective perception of how their everyday lives are affected by fecal incontinence.
Incontinence pads for fecal leakage are used by 2.3 percent of the women with no OASI, 7.1 percent of those with one OASI and 8.4 percent of those with two OASIs. The study found no influence of OASIs on other pelvic floor disorders or symptoms in the lower urinary tract.
Major impact on quality of life
Attitudes vary, too. In women with no OASI, faecal incontinence is found to be “bothersome” by 28.2 percent. The corresponding share in the group with one injury is 43.9 percent, against 46.0 percent among those with two injuries.
The first and corresponding author of the study is Ida Nilsson, a researcher affiliated with Sahlgrenska Academy, University of Gothenburg, in obstetrics and gynaecology. She is also a resident obstetrician at Södra Älvsborg Hospital Women’s Clinic in Borås.
“An anal sphincter injury considerably raises the risk of accidental bowel leakage later in life. With repetition of the injury, the risk of persistent faecal incontinence is doubled. The degree of severity also rises, with a higher frequency of leakage occasions, more severe incontinence, and a greater impact on quality of life,” Nilsson states.
Reference:
Ida E.K. Nilsson, Sigvard Åkervall, Mattias Molin, Ian Milsom, Maria Gyhagen. Severity and impact of accidental bowel leakage two decades after no, one, or two sphincter injuries. American Journal of Obstetrics and Gynecology, 2022; DOI: 10.1016/j.ajog.2022.11.1312
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751