Endoscopy 2022; 54(07): E324-E326
DOI: 10.1055/a-1519-6825
E-Videos

Endoscopic negative pressure therapy for a broad rectal fistula using pull-through open-pore film and polyurethane foam drains

Johannes Müller
Department for General, Abdominal, Thoracic and Vascular Surgery, Katholisches Marienkrankenhaus Hamburg gGmbH, Hamburg, Germany
,
Anna-Maria Goerdt
Department for General, Abdominal, Thoracic and Vascular Surgery, Katholisches Marienkrankenhaus Hamburg gGmbH, Hamburg, Germany
,
Christian T. Müller
Department for General, Abdominal, Thoracic and Vascular Surgery, Katholisches Marienkrankenhaus Hamburg gGmbH, Hamburg, Germany
,
Department for General, Abdominal, Thoracic and Vascular Surgery, Katholisches Marienkrankenhaus Hamburg gGmbH, Hamburg, Germany
› Author Affiliations

A 63-year-old man presented with a large acute pararectal abscess, with a broad suprasphincter fistula. Initial emergency surgical treatment consisted of opening the abscess and insertion of a loop drain ([Fig. 1]). Further therapy was performed by endoscopic negative pressure therapy (ENPT), sequentially using open-pore foam drains (OPDs) and open-pore film drains (OFDs) in a novel pull-through technique [1] [2] [3].

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Fig. 1 Photograph of the external appearance on the first postoperative day showing the wound opening (W), anus (A), and loop drain (D).

The pull-through OPD technique was as follows: an open-pore polyurethane foam was knotted onto the distal end of an 18-Fr nasogastric tube (NGT), which was connected to another 12-Fr NGT, thereby holding the drainage element in the middle of the two tubes. The pull-through OFD technique was as follows: the distal end of the 18-Fr NGT was covered with a thin, open-pore, double-layered drainage film (Suprasorb CNP Drainage Film; Lohmann & Rauscher, Germany), and again a 12-Fr NGT was connected to the distal end of the tube ([Fig. 2]). With OPDs, the size of the foam is adjustable to bigger wound cavities, whereas an OFD has a small diameter (4–6 mm) and is less adhesive to the adjacent tissue [4].

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Fig. 2 Photograph of the materials used for open-pore drainage showing the polyurethane foam (PU) and thin double-layered drainage film, which were used to construct three different pull-through drains: an open-pore PU drain (OPD), an open-pore film drain (OFD), and an OFD with a thread for the final pull-through maneuver. VAC, vacuum suction; X, the point where one channel of the pull-through drain was blocked to allow the application of negative pressure.

ENPT was started by replacing the initial loop drain with an OPD using a pull-through technique ([Video 1]). The drainage element was placed in the wound cavity. The external wound was surgically closed. The end of the tube was passed through the fistula, exiting the body through the anus, where negative pressure of −125 mmHg (Activac, KCI, USA) was established ([Fig. 3]).

Video 1 The pull-through method being used to insert and replace the drainage elements for endoscopic negative pressure therapy in a patient with a broad anal fistula.


Quality:
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Fig. 3 Schema showing the pull-through drainage technique. DE, drainage element; S, sphincter ani, T12, 12-Fr drainage tube; T18, 18-Fr drainage tube; VAC, vacuum suction; X, the point where one channel of the pullthrough drain was blocked to allow the application of negative pressure.

At intervals of 3–4 days thereafter, the wound was re-opened, with the OPD being easily replaced using a pull-through maneuver ([Fig. 4]). After 14 days (four changes), the wound cavity had shrunk to a channel and ENPT was then continued using the small-bore pull-through OFD (two changes in 7 days). For the last cycle, a pull-through OFD with a thread was used.

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Fig. 4 Photograph of the pull-through maneuver being performed for a pull-through open-pore polyurethane foam drain (OPD), which was constructed using a 12-Fr drainage tube (T12) and a second 18-Fr tube (T18). The red arrows indicate the direction of pull.

The ENPT was completed after 21 days, and was followed by 7 days of rinsing with an enema twice a day [5]. Following this, the broad rectal fistula and large abscess had healed completely ([Fig. 5]), with sphincter function being unimpaired and a colostomy having been avoided.

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Fig. 5 Endoscopic view of the healed fistula with a slight scar visible.

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Publication History

Article published online:
09 July 2021

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