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Corresponding author: Anantha Padmanabhan, MD, FACS, FASCRS, 5965 E Broad St, Suite 250, Columbus, OH 43213 (e-mail: apaddy{at}phy.mchs.com).
| Abstract |
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Objective To evaluate the safety of the Flexi-Seal Fecal Management System in hospitalized patients with diarrhea and incontinence.
Methods A prospective, single-arm clinical study with 42 patients from 7 hospitals in the United States was performed. The fecal management system could be used for up to 29 days. The first 11 patients (all from critical care) underwent endoscopic proctoscopy at baseline; 8 of these had endoscopy again after treatment. The remaining 31 patients (from critical or acute care) did not have endoscopy.
Results Rectal mucosa was healthy after use of the device in all patients who had baseline and follow-up endoscopy. Physicians and nurses reported that the system was easy to insert, remove, and dispose of; its use improved management of fecal incontinence; and it was practical, caregiver- and patient-friendly, time-efficient, and efficacious. Skin condition improved or was maintained in more than 92% of patients. Patients reports of discomfort, pain, burning, or irritation were uncommon. Adverse events were reported for 11 patients (26%). Death (considered unrelated to study treatment) occurred in 5 patients, 2 patients had generalized skin breakdown, and 1 patient had gastrointestinal bleeding after 4 days of treatment.
Conclusions The fecal management system can be used safely in hospitalized patients with diarrhea and fecal incontinence. Additional well-designed, controlled clinical trials may help to measure clinical and economic outcomes associated with the device.
The first step in management is to identify and, if possible, eliminate the source of the incontinence.7 However, fecal incontinence in hospitalized patients, particularly in intensive care, often is of unknown cause, the result of multiple factors, or the result of another treatment that cannot be discontinued. Therefore, interventions that divert and contain feces often are essential to reduce perineal dermatitis in hospitalized patients. Protection of the skin from exposure to moisture and chemical damage from stool becomes a priority.
The Flexi-Seal Fecal Management System (FMS; ConvaTec, Division of E. R. Squibb & Sons, LLC, Princeton, New Jersey) is indicated for the fecal management of patients with little or no bowel control and liquid or semiliquid stool.8 The device consists of a soft silicone cannula approximately 1 m long with an annular silicone low-pressure balloon at the distal end and a pouch flange adapter at the proximal end that connects to the collection bag. The catheter balloon is collapsed to permit nontraumatic insertion into the rectal vault. The balloon is wrapped around the free end of the tubing and has a finger pocket for introducing the catheter through the anal sphincter (Figure 1A
). The catheter cannula is 23 mm in diameter and collapses to 8 mm in diameter for insertion.
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This study was conducted as part of the development of FMS before the system was marketed in the United States. Our primary objective was to describe the safety of the device in hospitalized patients who were experiencing diarrhea and incontinence. Secondary objectives included evaluations of FMS performance and ease of use.
| Methods |
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| Management of fecal incontinence is a priority in ICUs and acute care units.
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| Our primary objective was to describe the safety of the FMS device in hospitalized patients who had diarrhea and incontinence.
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Eligibility Criteria
At each site, the investigator or study coordinator selected hospitalized patients of legal consenting age for inclusion if the patients had incontinence and liquid or semiliquid stool. Key exclusion criteria included recent rectal surgery, anastomosis of the lower part of the large bowel within the preceding year, and recent cardiac event requiring hospitalization within the preceding 3 months. Each patient (or legally authorized representative) provided written informed consent.
Interventions and Assessments
Patients could be managed with FMS for up to 29 days, in accordance with the maximum duration of usage indicated in the package insert for the system. The device was removed sooner if an investigator or a study coordinator determined it was no longer clinically indicated.
The first 11 patients were recruited exclusively from ICUs, and endoscopic proctoscopy was performed to assess the condition of the rectal mucosa before insertion of the FMS. These patients were to have endoscopy again after removal of the device. However, endoscopy was completed at the final visit for only 8 patients; among the other 3 patients, 2 died and 1 had final endoscopy deferred because of the patients status. When the endoscopic results and a review of adverse events in the first 11 patients indicated no safety concerns, an additional 31 patients were enrolled from ICUs and acute care sites. Endoscopy was not required in these 31 patients. Caregivers, investigators, and study coordinators recorded all adverse events. At each site, the investigator categorized each adverse event according to severity, presumed cause, and seriousness (ie, if the event was fatal, was life-threatening, or prolonged hospitalization).
For study of the performance of the FMS, the following demographic and clinical information was recorded for each patient at baseline: diagnoses, mental response status (alert and responsive, sedated and sluggish, sedated and nonresponsive, comatose, or other), physical response status (responsive to touch or command, responsive to pain only, medication-induced paralysis, or other), consistency of stool (totally liquid, liquid with few solid flecks, or semiliquid), frequency of stool (every 812 hours, every 68 hours, every 46 hours, every 24 hours, or continuous), skin care protocol, and presumed cause of diarrhea. At each site, the investigator or study coordinator also used a nonvalidated scale, scored from 0 to 4 (Table 1
), to rate each patients skin condition separately for the perineal and buttocks areas. A digital rectal examination was performed; if fecal impaction was detected, disimpaction was performed and enrollment into the study continued at the discretion of the investigator or study coordinator. The investigator or study coordinator inserted the device and recorded whether it was easy to insert.
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Caregivers classified each occurrence of leakage as incidental (nonproblematic, anticipated leakage with a stool management device) or significant (stool leakage around the device). Incidental leakage was categorized further as one of the following: no moisture or stool detected from rectum, detectable clear wetness visually and to touch, small amount of disclosed wetness with odor, source unknown, or other. Significant leakage was categorized further as one of the following: FMS remained in place but stool had soiled skin and bed linens confined to area protected by absorbent pads, FMS remained in place but stool had soiled skin and bed linens extending beyond areas protected by absorbent pads, FMS was expelled with large amounts of stool soilage, or other.
Caregivers evaluated skin condition daily by using the skin condition rating scale (Table 1
). If a patient was alert and responsive, caregivers asked about the presence of discomfort, pain, irritation, or burning in the rectal area. Caregivers recorded the presence of odor, the presence of obstruction in the device, and collection bag changes. Using a subjective rating scale from 1 (strongly agree) to 5 (strongly disagree), caregivers rated how well the FMS improved control of fecal incontinence. Care-givers used the same scale from 1 to 5 to rate how FMS compared with other fecal management strategies in regards to being time-efficient, caregiver friendly, practical, efficacious, and patient friendly.
At the final visit, the investigator or study coordinator removed the device and recorded whether the device was easy to remove and whether it was easy to dispose of.
Statistical Analyses
Comparative statistical tests were not performed. Safety summaries included data on all enrolled patients who were treated with the study device. Descriptions of device performance were summarized for the intent-to-treat population, consisting of all enrolled patients who were treated with the study device and had at least one assessment after initial evaluation.
| Results |
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Device Performance
Investigators and study coordinators reported that the FMS was easy to insert for 37 (97%) of 38 patients. At the final visit, ease of removal and disposal were not rated for 2 patients who had died, and ease of removal was not rated for 1 additional patient who could not retain the device. For the remaining patients, investigators and study coordinators rated FMS easy to remove for 34 (97%) of 35 patients and easy to dispose of for 36 (100%) of 36 patients.
Caregivers completed a total of 200 daily reports of device performance (Table 4
). On 83% to 90% of these reports, caregivers said they agreed or strongly agreed with each of the following statements: the device improved fecal incontinence control, and it was practical, caregiver- and patient-friendly, time-efficient, and efficacious. Caregivers also reported that odor and blockage were uncommon (15% and 16%, respectively) and reported changing the collection bag at 26% of daily assessments.
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| Discussion |
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| Rectal mucosa was healthy after FMS use for all 8 patients who had baseline and follow-up endoscopy.
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External fecal incontinence collectors can be applied to perirectal skin to contain stool, but this approach usually requires 2 caregivers to install the device correctly, and removal of the adhesive barrier may damage already fragile skin.12 Another alternative to fecal management with bed linens involves the insertion of tubing (eg, urinary drainage catheters, mushroom catheters, nasal trumpets) into the rectum for stool diversion. Preliminary clinical studies have indicated that these approaches can divert feces effectively,1315 but a device must be created from parts intended for other uses and the safety of the makeshift devices is not well defined.
In contrast, the FMS was approved specifically for fecal management in patients with little or no bowel control and liquid or semiliquid stool.8 The shape, size, and softness of the rectal balloon of the system were designed to minimize mucosal damage after insertion into the rectum yet allow the device to be retained in the rectum for up to 29 days. Of the 42 patients in our study, 35 were able to retain the FMS until removal, and the device was reinserted successfully for 3 of the 7 patients who expelled it. Thus, most patients were able to retain the FMS. Patients with reduced sphincter tone who cannot retain the balloon may require fecal management with traditional strategies instead of a fecal diversion and collection device.
A major clinical objective of fecal management is to protect skin integrity. Two-thirds of patients in this study had multiple comorbid conditions, and more than three-quarters of patients had abnormal skin of the perineum and buttocks at baseline. Despite the presence of these risk factors for ulceration,9 skin integrity was either maintained or improved in more than 92% of patients during use of the FMS. Only one patient began the study with intact skin and had open skin on the buttocks at the final evaluation. The maintenance or improvement of skin integrity for most patients in this small study may have been related to the ability of the device to divert and collect stool with minimal or no leakage. Exposure of perineal skin to excess wetness and feces increases the risk for perineal dermatitis and ulceration.2,7 By diverting the stool and collecting it in a pouch attached to the catheter, thereby minimizing stool leakage, the FMS also may minimize skin breakdown and associated complications.
Few well-controlled studies have been undertaken to demonstrate the effect of continence aids on skin condition.16 According to a national prevalence and incidence survey of pressure ulcers in acute care settings,17 incidences of new-onset ulcers ranged from 7% to 9% between 1999 and 2004. However, those rates were reported for hospitalized patients overall, whereas more than three-quarters of the patients in our study were from the ICU. In a systematic review2 of 16 prospective studies, the incidence of pressure ulcers was higher in ICU patients (up to 56%) than among all hospitalized patients (up to 22%). Additional controlled studies are required to confirm whether the use of the FMS influences the risk for perineal dermatitis or pressure ulcers in hospitalized patients with fecal incontinence.
Eight patients had endoscopic proctoscopy both before and after use of the FMS, and rectal mucosa was normal at the end of the study in each of these patients. One patient had an admitting diagnosis of gastrointestinal bleeding and was receiving anticoagulant and antiplatelet therapies before use of the FMS. After 4 days of FMS treatment, the patient had gastrointestinal bleeding that the investigator considered probably related to the study device and the patient was dropped from the study. Endoscopy after removal of the device revealed ulceration, but the patient had not had endoscopy before insertion of the FMS, so we could not determine whether FMS use preceded the ulceration. As noted in the prescribing information for FMS, the device should not be used in patients with suspected or confirmed impairment of the rectal mucosa.8
Although performance and safety are key considerations for the evaluation of a new device for fecal management, determining whether achievement of these clinical goals results in undue discomfort or embarrassment for patients is also important. Caregivers reported that the majority of patients who were alert and responsive had no pain or discomfort with an FMS in place. Most of the daily evaluations indicated that the device was patient -friendly and that no odor was present. A comparative study of FMS with traditional fecal management strategies that includes more direct input from patients would be required to confirm the effects of the FMS on patients dignity and comfort.
| Despite the presence of risk factors for ulceration, skin integrity was either maintained or improved in more than 92% of patients during use of the FMS.
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Caregivers reported the device was time-efficient, practical, and caregiver-friendly, and they reported changing FMS collection bags on only 1 in 4 study days. Investigators and study coordinators reported that all of the device disposals and almost all of the device insertions and removals were easy. We did not evaluate economic outcomes in this study, but fecal incontinence can be costly to manage not only because of the direct costs of nursing time and supplies but also because of the indirect costs associated with pressure ulcers and nosocomial infections.5,18,19 Prospective, well-controlled trials are required to analyze the comparative cost-benefit of FMS and other fecal management strategies.
The subjective assessments of skin condition and the lack of a control group in this study limit the conclusions that can be drawn about a direct effect of the FMS on skin condition. Caregivers were not evaluated for interrater reliability on their use of the skin condition assessment scale, and the scale itself was not validated, but even established instruments for the evaluation of pressure ulcers are subject to variance in interpretation.20
| This device adds an important option for the management of diarrhea and fecal incontinence in hospitalized patients.
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| Conclusion |
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Caregivers from both ICUs and acute care units reported that the FMS improved control of fecal incontinence with minimal leakage and was practical, efficacious, time-efficient, and caregiver- and patient-friendly. Patients reports of pain and discomfort with the device were uncommon. Investigators and study coordinators reported that the FMS was easy to insert and easy to remove for almost all of the patients. This device adds an important option for the management of diarrhea and fecal incontinence in hospitalized patients. Additional well-designed, controlled clinical trials may help measure the clinical and economic outcomes associated with the use of the FMS device.
| ACKNOWLEDGMENTS |
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eLetters
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This study was supported by a grant from ConvaTec, a Division of E. R. Squibb & Sons, LLC.
| REFERENCES |
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K. M. Baldwin A Case for Using Evidence-Based Assessment Scales Am. J. Crit. Care., July 1, 2007; 16(4): 394 - 395. [Full Text] [PDF] |
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