Academic Editor:Basem Azab, Staten Island university hospital
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Application of a Cardiac Septal Occluder in a Patient Affected by Enteroatmospheric Fistula
Enteroatmospheric fistula is a challenging and emerging clinical situation, mainly related to “open abdomen” technique in damage control surgery for trauma and in case of multiple laparotomies.
We report the case of a 61-year-old male patient, affected by rectal carcinoma, submitted to standard surgical treatment and gradually evolving in persistent proximal jejunal fistula.
The positioning of a cardiac septal occluder (Amplatzer®) was associated with immediate and late favourable effects.
The procedure was conducted “bed-side” and turned out to be easy and safe.
Enteroatmospheric fistula (EAF) is a challenging clinical situation: the increasing frequency that is observed and reported worldwide is mainly correlated to the “open abdomen” technique1, 2: this technique is used in damage control surgery for trauma and in patients submitted to multiple laparotomies3, 4 .
EAF is defined as a single or multiple communications between the visceral lumen and the atmosphere: EAFs (enteroatmospheric fistulas) are superficial or deep depending on the origin of the fistulas.
Standard treatment of EAFs includes:
·Drainage of the output
·Total parenteral (TPN) and/or enteral (TEN) nutrition
·Prevention and control of infection and sepsis
The management of such patients is typically made in Intensive Care Units (ICU) but, in spite of all the above therapies spontaneous closure is extremely unlikely; consequently the morbidity and the mortality are very high, often in association with a long hospitalization.
Furthermore, a “road map” is needed for an accurate definition of the number and site of EAFs5, using radiologic techniques, computed tomography (CT), fistulography and oral or nasogastric ingestion of charcoal or dye.
Despite many adopted surgical and non-surgical techniques, a fully satisfactory method to treat this type of fistulas has not yet been described.
The aim of this study is to present a new technique to attempt the closure of an EAF by the positioning of a nitinol occluder system, a self-expandable double-umbrella-shaped device made of a nickel-titanium alloy (Figure 1, Figure 2).
A 61-year-old male patient, affected by rectal carcinoma, underwent a open standard anterior rectal resection. The postoperative course was particularly complex including postoperative haemorrhage, intestinal obstruction and perforation with the final arising of a jejunal multirecurrent EAF. The multistep treatment included many laparotomies with drainage, jejunal resections, direct closure of the EAF and “fistula- VAC” treatment; during a prolonged hospitalization in ICU, TPN and antibiotic therapy were associated. Despite of the several adopted treatments, the final result was a persistent proximal jejunal EAF surrounded by granulation tissue in the site of multiple laparotomies (Figure 3). The fistula output was 500 ml/day.
So we positioned a Nitinol device (Amplatzer® Septal Occluder 18 mm)6 inside the EAF; such positioning was conducted “bed-side” without anaesthesia and proved to be easy and safe. The distal disk was introduced inside the jejunal lumen and the proximal disk was secured to the surrounding granulation tissue, utilizing the Nitinol’s super-elastic properties for the initial and progressive adaptation to the defect and the subsequent release (Figure 4).
Immediately after the positioning of the device, a standard low-pression VAC therapy was started.
At time of positioning of Nitinol device, the patient was recovered in ordinary unit, not in ICU.
We observed immediate rehabilitation, a better control of fecal output, so a standard oral nutrition was started in 7 days and TPN was discontinued in 15 days.
The patient demonstrated impressive early improvement in general condition and quality of life, particularly from the nutritional and psychological point of view.
VAC was effective with drainage of enteric fluide (50-100 cc/day) and progressive healing of the surrounding tissues; about ¾ of the device was inglobed in these tissues, with the remaining ¼ responsible for the intestinal leakage drained into the reservoir.
Finally the patient was discharged with a standard VAC therapy.
The device is still in place a 3 months, with gradually reduced output from the fistula and initial healing of the surrounding tissues.
Some Authors described an alternative technique of management of EAF consisting in a collapsible fistula isolation device11 with a separation technique using negative pressure wound therapy /reticulated open cell foam on fistula with moderate to high output levels. This technique provides control of effluent reducing complications of sepsi and accelerate wound healing.
Subramaniam et al.12 reported a “floating stoma” method, according to plastic bags are sutured between the edges of fistulated bowel and skin; a controlled fistula resembling a stoma is formed, source management can be provided by a stoma bag and the peritoneal cavity is protected until the granulation of the viscera allows skin grafting.
An other technique is described by Verhaalen et al.13, consisting in isolation of enteric contents from the wound bed by utilising an air and fluid impermeable “ring/silo” within an NPWT (negative pressure wound therapy) system.
The other source of control technique in EAF is the “baby bottle nipple method” defined by Layton et al14.
The Amplatzer Nitinol device is routinely adopted in the percutaneous closure of congenital heart defects; many Authors described the adoption of this device or of similar ones in several clinical and experimental situations. The use of this device in esophagorespiratory fistulas is described by Rabenstein et al.15 and Green et al.16; Kouklakis et al.17 used the device for the closure of a gastro-jejuno-colonic fistula; Perretta et al.18 and Asakuma et al.19 used a similar device for the endoscopic closure of a gastrotomy in an animal model; Malespin et al.20 positioned the device for palliationof a malignant gastrocolic fistula.
In the near future, with advancement of the healing of surrounding tissue, we will evaluate the possibility of removing the device for spontaneous healing or surgical closure of the residual fistula.
In general definitive surgery is delayed from 6 to 12 months to have a soft abdomen and to decrease the risk of bowel injury. In this procedure, it is essential to resect the bowel segment communicating with the fistula, restore intestinal continuity and cover the bowel with well-perfused soft tissue21.
Usually, more than 3 months (and sometimes up to a year) are needed before conditions are ideal for proceeding with surgery.
However the application of such device in an EAF has not yet described and are necessary more applications and outcomes data to fully understand the potential indications and long-term outcome associated with this technique. In our patient was easy, safe and effective; the outstanding advantages were the immediate improvement the quality of life, the early realimentation and the possibility of hospital discharge.