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<p class="title-left"><span class="bold">Postpartum Fecal and Flatal Incontinence:</span></p>
<p class="subtitle">Silence, Stigma, and Psychological Interventions</p>
<div id="abstract"><img src="/publishingimages/new_articles/grey_side_rule.jpg" alt="Vertical divider" />
<p class="abstract-text"><span class="bold">Dr Barnes </span>is a female pelvic medicine and reconstructive surgery fellow at the University of New Mexico Health Sciences Center, Albuquerque, New Mexico.<span class="bold"> Dr Stern</span> is chief of the Avery D. Weisman Psychiatry Consultation Service at Massachusetts General Hospital and the Ned H. Cassem professor of psychiatry in the field of psychosomatic medicine/consultation at Harvard Medical School, Boston, Massachusetts. <span class="bold">Dr Berkowitz</span> is the associate division director of the specialist division in general obstetrics and gynecology and is a board-certified subspecialist in female pelvic medicine and reconstructive surgery at Massachusetts General Hospital, Boston, Massachusetts.</p>
<p class="abstract-citation"><span class="italic">Prim Care Companion CNS Disord 2017;19(5):17f02164</span></p>
<p class="doi-line"><span class="italic">
https://doi.org/</span><span class="doi">10.4088/PCC.17f02164</span></p>
<p class="abstract-copyright"><span class="italic">© Copyright 2017 Physicians Postgraduate Press, Inc.</span></p>
<p class="front-matter first"><span class="bold-italic">Submitted:</span> May 16, 2017; accepted August 10, 2017.</p>
<p class="front-matter"><span class="bold-italic">Published online:</span> October 5, 2017.</p>
<p class="front-matter"><span class="bold-italic">Potential conflicts of interest: </span>None.</p>
<p class="front-matter"><span class="bold-italic">Funding/support: </span>None.</p>
<p class="front-matter"><span class="bold-italic">Corresponding author:</span> K. Lauren Barnes, MD, Department of Obstetrics and Gynecology, University of New Mexico Health Sciences Center, 2211 Lomas Blvd NE, Albuquerque, NM 87106 <span class="hyperlink">(<a href="
mailto:klbarnes@salud.unm.edu">
klbarnes@salud.unm.edu</a>)</span>. </p>
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<p class="byline-regular">K. Lauren Barnes, MD; Theodore A. Stern, MD; and Lori R. Berkowtiz, MD</p>
<p class="drop-cap-with-body-text"><span class="bold-14pt-for-cap"><span class="bold">H</span></span>ave you ever wondered how common bowel and bladder dysfunction are postpartum? Have you ever felt ill-prepared to make a decision with regard to further workup or treatment? Have you been unsure about how to manage the psychological sequelae of postpartum fecal and flatal incontinence? If you have, then the following case vignette and discussion should prove useful.</p>
<p class="subheads_subhead-1-left"><span class="bold">CASE VIGNETTE</span></p>
<p class="body-text">Ms A, a 27-year-old woman (gravida 1, para 1), delivered a healthy baby vaginally. She presented for an annual examination 4 months postpartum. After being asked how she was doing since the delivery, she sheepishly admitted that she had been having issues with bowel control. She reported having passed flatus frequently without intending to do so and had a few episodes of staining her underwear with loose stools each month. She never had this issue before the delivery. Upon further questioning, it became clear that she had a time-consuming repair after the baby was born. The delivery documentation revealed that she had a third-degree laceration.</p>
<p class="body-text">The bowel problems were negatively affecting Ms A’s ability to enjoy intimacy with her partner, and she wanted to know if there was anything she could do to improve the problem. Ms A also wanted to know if having another baby would make the problem worse, since she would like to have another child.</p>
<p class="subheads_subhead-1-left"><span class="bold">WHAT ARE FECAL AND FLATAL INCONTINENCE?</span></p>
<p class="subheads-subhead-3-with-body-text"><span class="italic">Anal incontinence</span> is the overarching term for both fecal and flatal incontinence. Fecal incontinence is the involuntary loss of liquid or solid stool. Liquid stool loss is more common, with incontinence of solid stool indicative of more severe dysfunction. Flatal incontinence describes loss of gas only and is the most prevalent type of anal incontinence.</p>
<div class="clinical-article">
<div class="heading"><img src="/publishingimages/new_tocs/clinical_points.gif" alt="clinical points" /></div>
<p class="take-home-head-clin-pts"></p>
<ul>
<li class="clinical-points">Anal incontinence comprises both fecal and flatal incontinence.</li>
<li class="clinical-points"><span>Identification of risk factors and<a id="_idTextAnchor000"></a> physical examination findings facilitate timely diagnosis and treatment of anal incontinence.</span></li>
</ul>
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<p class="body-text">Anal incontinence may be caused by several mechanisms, as the mechanism of continence itself is complex. Obstetric injury has the potential to cause both neurologic and muscular damage to the pelvic floor. The internal anal sphincter (IAS) comprises smooth muscle that provides resting anal pressure, while the external anal sphincter (EAS) contracts with valsalva maneuvers and can be squeezed voluntarily. Damage to the EAS can cause urge-related or diarrhea incontinence, while dysfunction of the IAS can affect continence during rest. Pelvic floor muscular support adds a further level of support, with the puborectalis muscle acting as a sling under the rectum to maintain the anorectal angle.</p>
<p class="body-text">The pudendal nerve innervates the majority of the pelvic floor and plays an important role in continence. It is a mixed nerve, arising from S2, S3, and S4, with the motor neurons innervating the EAS and part of the puborectalis muscle and the sensory neurons providing sensation to the perianal and genital skin. Damage to this nerve occurs with stretching during passage of the fetal head through the birth canal and is more likely to happen with a larger head, longer duration of pushing, or with forceps deliveries. If a stretch injury (segmental demyelization and no axonal damage) is sustained, function typically returns within 3 months. Injury to the sensory aspect of the pudendal nerve can diminish rectal sensation, leading to constipation and fecal overflow, while damage to motor fibers can affect the anorectal angle and inhibit the contractile function of the EAS. Long-term damage can lead to sphincter degeneration and incontinence later in life.<span class="htm-cite"><a href="#ref1">1</a></span></p>
<p class="subheads_subhead-1-left"><span class="bold">WHO IS AT RISK FOR FECAL AND FLATAL INCONTINENCE?</span></p>
<p class="body-text">Some degree of anal incontinence after pregnancy is common. Women undergoing vaginal delivery are at greatest risk, with an estimated 13%–25% of women affected postpartum.<span class="htm-cite"><a href="#ref2">2</a>,<a href="#ref3">3</a></span> Anal sphincter injury during delivery (described as a third- or fourth-degree perineal laceration) (<span class="callout"><a href="#" onclick="createFigure('t1'); return false;">Table 1</a></span>) is the most strongly correlated risk factor for postpartum incontinence.<span class="htm-cite"><a href="#ref3">3</a>,<a href="#ref4">4</a></span></p>
<div id="figure" class="right"> <a href="#" onclick="createFigure('t1'); return false;"><img src="17f02164T1.gif" alt="Table 1" id="t1" border="0" /></a>
<p class="click-to-enlarge">Click figure to enlarge</p>
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<div id="figure" class="right"> <a href="#" onclick="createFigure('t2'); return false;"><img src="17f02164T2.gif" alt="Table 2" id="t2" border="0" /></a>
<p class="click-to-enlarge">Click figure to enlarge</p>
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<p class="body-text">Factors that place women at risk for anal sphincter laceration are risk factors for early and long-term anal incontinence. Median episiotomy, longer duration of pushing, fetal macrosomia (><span class="thinspace"> </span>4,500 g), and either forceps- or vacuum-assisted delivery increase risk of EAS injury and anal incontinence.<span class="htm-cite"><a href="#ref5">5–7</a></span> Forceps delivery has also been consistently shown to cause more trauma to the pelvic floor than a spontaneous delivery or a vacuum-assisted delivery.<span class="htm-cite"><a href="#ref6">6</a></span> Increasing maternal age at time of delivery increases risk of EAS injury and is an independent risk factor for fecal incontinence.<span class="htm-cite"><a href="#ref7">7</a></span> After the age of 18 years, rates of EAS injury and fecal incontinence go up with an increased odds ratio of 1.06 per year.<span class="htm-cite"><a href="#ref7">7</a> </span><span class="callout"><a href="#" onclick="createFigure('t2'); return false;">Table 2</a></span> provides the risk factors for postpartum fecal and flatal incontinence.</p>
<p class="body-text">Cesarean delivery is not completely protective. In a mixed cohort of women who had labored prior to Cesarean delivery and those who had not, fecal incontinence occurred in 7% at 6 months postpartum and in 4.5% 3–5 years after delivery.<span class="htm-cite"><a href="#ref2">2</a>,<a href="#ref4">4</a>,<a href="#ref5">5</a></span> Theoretically, women who have not labored would have less impact to both the muscles of the pelvic floor and the nerves that supply it; however, no trials have conclusively demonstrated a substantial difference in these 2 populations. A 2010 Cochrane review<span class="htm-cite"><a href="#ref8">8</a></span> thus does not advise Cesarean delivery for the prevention of anal incontinence. </p>
<p class="subheads_subhead-1-left"><span class="bold">HOW SHOULD FECAL AND FLATAL INCONTINENCE BE EVALUATED AND TREATED?</span></p>
<p class="body-text">The patient’s history should be elicited to assess the frequency of accidents, description of stool patterns, preceding urgency, severity of symptoms, and precipitating events. Presence or absence of back pain should be noted. The physical examination should include inspection of the perianal area and a digital rectal examination. Perianal reflexes to assess for the presence of an anal wink will demonstrate contraction of the EAS. The EAS is innervated by the pudendal nerve and demonstrating an intact anal wink suggests at least some intact nerve innervation and anatomic integrity of the EAS.</p>
<p class="body-text">The first-line intervention involves use of stool-bulking agents, in particular, powder-based supplementation. Fiber, such as methylcellulose, can improve stool consistency and accidental loss of both stool and gas. If diarrhea is a trigger, loperamide can be helpful in reducing urgency and stool loss. Completing a food diary helps women discover dietary triggers, which then can be avoided. Common offenders are caffeine, lactose, and fructose. Eating small meals rather than large meals can decrease the sense of urgency as well.</p>
<p class="body-text">Physical therapy with biofeedback can be helpful in women with low EAS tone. In women who have EAS lacerations following delivery, pelvic floor muscle training within a month of delivery results in reduced rates of anal incontinence.<span class="htm-cite"><a href="#ref9">9</a></span> Physical therapy can be conducted by trained therapists who guide patients or use vaginal biofeedback sensors to direct patients to contract the muscles of the pelvic floor. The goal is to target both fast- and slow-twitch muscle fibers and contract the genital hiatus. Patients are also counseled to avoid constipation, carrying heavy objects, and weight-bearing exercises during the early healing period.<span class="htm-cite"><a href="#ref9">9</a></span></p>
<p class="body-text">Few medications have been shown to be effective in treating anal incontinence. A small study<span class="htm-cite"><a href="#ref10">10</a></span> demonstrated some efficacy in using amitriptyline, which is thought to work by decreasing the amplitude and frequency of rectal motor complexes and by slowing colonic transit, leading to firmer stools.</p>
<p class="subheads_subhead-1-left"><span class="bold">WHAT IS THE TYPICAL CLINICAL COURSE OF POSTPARTUM FECAL AND FLATAL INCONTINENCE?</span></p>
<p class="body-text">Generally, anal incontinence symptoms will improve on their own, with studies<span class="htm-cite"><a href="#ref1">1</a>,<a href="#ref9">9</a></span> suggesting that neuromuscular injuries sustained during pregnancy, labor, and delivery resolve within 12 months of delivery in most women. Of the interventions suggested, only pelvic floor physical therapy has shown benefit in improving these injuries. One long-term study<span class="htm-cite"><a href="#ref11">11</a></span> with 12-year follow-up demonstrated lower rates of fecal incontinence 1 year after delivery with postpartum intervention of pelvic floor physical therapy, but there were no differences in outcomes 12 years after delivery. Improvement and long-term continence are unpredictable, although 2 predictors of long-term fecal incontinence are known: continued fecal incontinence 3 months postpartum and repeat EAS injury with subsequent delivery. Of women reporting fecal incontinence 3 months postpartum, 43% had symptoms 12 years after delivery.<span class="htm-cite"><a href="#ref11">11</a></span> Additionally, the most consistent predictor of long-term fecal incontinence is a second EAS injury in a subsequent delivery.<span class="htm-cite"><a href="#ref12">12–14</a></span> In women with a second EAS injury, 50% had continued anal incontinence 5 years after delivery and 23.7% had fecal incontinence.<span class="htm-cite"><a href="#ref13">13</a></span></p>
<p class="subheads_subhead-1-left"><span class="bold">HOW DO WOMEN REACT TO HAVING POSTPARTUM FECAL AND FLATAL INCONTINENCE?</span></p>
<p class="body-text">A majority of women feel some degree of shame and are reluctant to discuss this issue. Although extremely common, anal incontinence is reported much less frequently than urinary incontinence, and patients rarely bring up this issue themselves, even to their obstetric provider. In one study,<span class="htm-cite"><a href="#ref14">14</a></span> only 30% of women experiencing severe urinary or fecal incontinence discussed the problem with their health care provider in the year following delivery.</p>
<p class="body-text">Depression and anxiety are extremely common in patients affected by anal incontinence. One study<span class="htm-cite"><a href="#ref15">15</a></span> noted a range of coping strategies employed to handle the stress. The most common strategies included restricting activity, denial, knowing the location of toilets when out in public, working outside the home, and using sanitary pads.<span class="htm-cite"><a href="#ref15">15</a></span> The impact on relationships was evident when some women described controlling sexual activity, sleeping in separate bedrooms than partners, and obsessively washing.<span class="htm-cite"><a href="#ref15">15</a></span> For some, the anxiety of leaving home due to the concern of losing stool due to fecal incontinence can be similar in appearance to agoraphobia. Given the high prevalence of anxiety and depression, screening is warranted in all fecal incontinence patients. Unfortunately, new-onset anal incontinence after childbirth leads 1 in 4 affected women to report a persistently negative quality of life 2 years after delivery.<span class="htm-cite"><a href="#ref8">8</a></span></p>
<p class="subheads_subhead-1-top-left"><span class="bold">WHAT ARE THE LONG-TERM COMPLICATIONS OF FECAL AND FLATAL INCONTINENCE?</span></p>
<p class="body-text">In the long term, anal incontinence impacts quality of life with patients noting increased rates of depression, lower self-perception, embarrassment, and negative impact on their daily lives.<span class="htm-cite"><a href="#ref16">16</a></span> The condition impacts quality of life in older women, causing isolation and a decreased enjoyment of sexual activity.<span class="htm-cite"><a href="#ref17">17</a>,<a href="#ref18">18</a></span> Unfortunately, women with moderate to severe fecal incontinence also have a high prevalence of urinary incontinence symptoms, worsening their distress.<span class="htm-cite"><a href="#ref19">19</a></span> Older women affected by both urinary and fecal incontinence have the worst overall quality of life scores in studies<span class="htm-cite"><a href="#ref19">19</a>,<a href="#ref20">20</a></span> of women with pelvic floor disorders and the highest rates of depression.</p>
<p class="subheads_subhead-1-left"><span class="bold">WHAT IS THE IMPACT OF FECAL AND FLATAL INCONTINENCE ON FUTURE PREGNANCIES?</span></p>
<p class="body-text">If anal sphincter injury is present at the first delivery, the incidence of repeat anal sphincter injury is 6.3%–7% with the subsequent delivery, which significantly increases the risk of long-term anal incontinence.<span class="htm-cite"><a href="#ref12">12–14</a></span> Many women with persistent, severe incontinence from the first delivery subsequently opt for elective Cesarean delivery with the hope of preventing long-term and worsened incontinence.<span class="htm-cite"><a href="#ref12">12</a></span> No recommendation regarding Cesarean versus vaginal delivery for women with history of incontinence following the first delivery or continued symptoms has been universally accepted and thus should lead to a discussion of shared decision-making between the patient and the provider.</p>
<p class="subheads_subhead-1-left"><span class="bold">HOW CAN PERSISTENT FECAL AND FLATAL INCONTINENCE BE MANAGED?</span></p>
<p class="body-text">For persistent incontinence that does not improve despite management, several options are available and are typically performed by colorectal surgeons or female pelvic medicine and reconstructive surgeons. Further diagnostic studies identify the etiology of the dysfunction. Anal manometry uses pressure sensors to assess if anal tone is normal. Pudendal nerve terminal motor latency testing assesses for conduction abnormalities of the pudendal nerve. Electromyography can be used to assess the contraction of the EAS and measures the strength of depolarization using surface or needle electrodes but is not used as often since the advent of endoanal ultrasound. Endoanal and pelvic ultrasound can visualize defects in the EAS and evaluate other pelvic floor defects, such as a rectocele, which may contribute to defecatory dysfunction. Functional tests of defecation can be performed with barium defecography.</p>
<p class="body-text">Advanced treatment options can include sphinteroplasty, use of injectable bulking agents, and sacral nerve stimulation, depending on the etiology of the dysfunction, but no treatment option is perfect, and fecal incontinence returns in many patients despite these treatments.</p>
<p class="subheads_subhead-1-left"><span class="bold">WHICH TECHNIQUES ARE HELPFUL FOR MANAGEMENT OF PSYCHOLOGICAL DISTRESS ASSOCIATED WITH FECAL AND FLATAL INCONTINENCE?</span></p>
<p class="body-text">As a provider, assuring a patient that her symptoms are experienced by other postpartum women is a first step toward addressing the distress and isolation associated with fecal and flatal incontinence. Additionally, experts suggest the terminology <span class="italic">accidental bowel leakage</span> should be used when asking about this condition. Once patients realize that they are not the only ones who experience these symptoms, they may be better able to accept treatment strategies. Online support groups exist for women with these symptoms, and they can be helpful as a destigmatizing and anonymous outlet. Pelvic floor physical therapy can be helpful to treat the physical manifestations and reassure the patient that this condition is shared by many women.</p>
<p class="subheads_subhead-1-left"><span class="bold">CASE VIGNETTE: OUTCOME</span></p>
<p class="body-text">	Ms A’s symptoms greatly improved after initial treatment with a stool-bulking medication and pelvic floor physical therapy. By 6 months postpartum, Ms A was no longer having inadvertent loss of stool, and she rarely lost control of flatus. She became pregnant again 18 months after the delivery of her first child and was asymptomatic at that time with regard to anal incontinence. She decided to move forward with a vaginal delivery, which did not result in an EAS laceration. She had symptoms of anal incontinence following the birth of her second child, which improved within the first postpartum year with use of stool-bulking agents.</p>
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