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Case ReportCase Reports and Clinical Observations

Pediatric Nasal Tip Amputation Successfully Treated with Nonmicrovascular Replantation and Hyperbaric Oxygen Therapy

Jason D. Pou and H. Devon Graham
Ochsner Journal June 2017, 17 (2) 204-207;
Jason D. Pou
1Department of Otolaryngology, Head and Neck Surgery, Tulane University School of Medicine, New Orleans, LA
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H. Devon Graham
1Department of Otolaryngology, Head and Neck Surgery, Tulane University School of Medicine, New Orleans, LA
2Department of Otorhinolaryngology, Ochsner Clinic Foundation, New Orleans, LA
3The University of Queensland School of Medicine, Ochsner Clinical School, New Orleans, LA
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Abstract

Background: Nasal tip amputation is a rare but difficult problem to manage. Nonmicrovascular nasal tip replantation is a valid and relatively simple repair option for moderate nasal defects, but tissue ischemia and graft failure occur frequently.

Case Report: We present the case of a pediatric nasal tip amputation from a dog bite treated with replantation within 5 hours. The 2.5-cm avulsed tip contained skin, cartilage, and mucosa and was replanted as a 3-layer composite graft. Hyperbaric oxygen (HBO) therapy was initiated for 2 weeks postoperatively. The outcome was functionally adequate, and the majority of the native nasal tissue was salvaged.

Conclusion: HBO therapy can be used after nonmicrovascular nasal tip replantation to improve graft survival and potentially decrease the need for revision surgery.

Keywords
  • Amputation–traumatic
  • hyperbaric oxygenation
  • nasal surgical procedures
  • nose deformities–acquired
  • otorhinolaryngologic surgical procedures
  • replantation

INTRODUCTION

Traumatic nasal tip amputation is a rare but difficult problem to manage. The majority of nasal tip defects are created by Mohs surgeons and are typically repaired with interpolated or transpositional flaps. For small traumatic nasal defects, more favorable results have been achieved with tissue replantation compared to local flaps; however, graft failure and revision procedures are common.1,2 For large defects, tissue ischemia and necrosis are considered inevitable.3 Microvascular reconstruction has been reported in several successful cases and is recommended for large nasal amputations when viable vessels can be identified on the graft.4

Hyperbaric oxygen (HBO) therapy has proven to be beneficial for graft or flap salvage in cases compromised by decreased perfusion or hypoxia.5 Several animal studies have demonstrated improved composite graft survival with the use of HBO therapy.6-9 Two case reports demonstrate the use of HBO therapy after free tissue replantation on the nasal tip.5,10 We present a case of pediatric nasal tip amputation successfully managed by immediate replantation with postoperative HBO therapy.

CASE REPORT

An 8-year-old male presented to Ochsner Clinic Foundation via ambulance after sustaining a nasal tip amputation from a dog bite. The amputated tip was located, placed in a plastic bag, and transported on ice. Physical examination at presentation revealed a 2.5 × 2.2-cm defect of the left nasal tip. The defect involved the nasal tip with a portion of the left lower lateral cartilage, the soft tissue triangle, a portion of the left alar rim, and the anterior one-third of the columella (Figures 1A and 1B). No identifiable venous or arterial vessels were in the amputated tissue or nasal defect.

Figure 1.
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Figure 1.

Anterior (A) and lateral (B) views of the initial defect that involves a portion of the left lower lateral cartilage, the soft tissue triangle, a portion of the left alar rim, and the anterior one-third of the columella. (To see this image in color, click to https://education.ochsner.org/publishing-services/toc/pou-16-0117-fig1.)

In the operating room, the defect was copiously irrigated with normal saline, and debridement of the wound was performed with an antimicrobial solution and gauze. The amputated tissue was removed from the ice bath and placed in Betadine Solution for sterilization. The lower lateral cartilage was approximated with 5-0 MONOCRYL sutures (Ethicon) in simple, interrupted fashion. The skin was approximated in layers, first using deep dermal 5-0 MONOCRYL sutures. Then the superficial layer was closed using 6-0 nylon sutures in a simple, interrupted fashion. The nasal mucosa in the vestibule was approximated to the graft using 5-0 chromic sutures in simple, interrupted fashion (Figure 2). Tissue ischemia time was approximately 5 hours.

Figure 2.
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Figure 2.

In this photograph of the immediate postoperative repair, mild ecchymosis can be seen on the graft. A Telfa roll in the left nasal passage provides support for the graft. (To see this image in color, click to https://education.ochsner.org/publishing-services/toc/pou-16-0117-fig2.)

Moderate ecchymosis was noted on the lateral portion of the graft, but significant engorgement was not appreciated; thus, leech therapy or induction of external bleeding was not considered. The patient was discharged with amoxicillin/clavulanic acid (Augmentin), and HBO therapy was initiated within 72 hours. He was treated in a multiplace chamber. He underwent 2 treatments on day 1, followed by daily treatments for 2 weeks. He was closely followed in the clinic.

The graft experienced mild epidermolysis at postoperative day 10 (Figure 3), but the foundation of the graft remained viable. The patient is currently 6 months from the date of replantation and has remained functionally asymptomatic (Figure 4). No further surgery has been performed, but he may require a minor revision procedure in the future as growth may lead to worsening alar notching or tip asymmetry.

Figure 3.
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Figure 3.

Ten days postoperatively, epidermolysis involves almost the entire surface of the graft. (To see this image in color, click to https://education.ochsner.org/publishing-services/toc/pou-16-0117-fig3.)

Figure 4.
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Figure 4.

Six months postoperatively, the well-healed graft has excellent contour; mild alar notching is present. (To see this image in color, click to https://education.ochsner.org/publishing-services/toc/pou-16-0117-fig4.)

DISCUSSION

The one reported case of nonmicrovascular pediatric nasal tip replantation by Nichter et al from 1991 demonstrated successful nasal tip reattachment with adjuvant use of HBO therapy.10 In 2000, Rapley et al reported successful use of HBO therapy for auricular composite grafting in a pediatric nasal tip amputation.5 Our case combines both nonmicrovascular replantation and postoperative HBO therapy for a pediatric patient.

Most of the literature on pediatric nasal reconstruction is focused on treatment of congenital anomalies.5 When managing nasal trauma in a child, one must consider that the pediatric nose has several growth centers, has less projection, and is composed largely of cartilage compared to the adult nose.11

Many case reports document the successful use of microvascular reconstruction for repair of nasal tip defects.3,4 Microvascular reconstruction may be considered for large tissue defects, long ischemia time, and defects with identifiable vessels.1,4 However, successful nasal tip microvascular reconstruction requires a skilled microvascular surgeon and extensive operating room time.2 In many cases of nasal tip amputation, microvascular reconstruction may not be a feasible option; therefore, we present this case to highlight an alternative treatment plan that may offer successful functional and cosmetic results.

Several authors have reported improved results when using tissue replantation instead of pedicled flaps or other free-tissue grafts.2-4 Replantation offers the closest match to the surrounding tissue contour and color while restoring nasal function.2 Survival of a multilayered replanted graft is limited by the size, ischemia time, and overall condition of the tissue.12 Establishing adequate venous drainage of replanted tissue is paramount, as vascular congestion quickly leads to graft failure.4 Venous congestion can be improved with leech therapy or induction of external bleeding.2 Despite ideal conditions in nasal tip replantation, even for relatively small grafts, partial failure is common, and revision surgery is frequently necessary.2,3

HBO therapy is approved for numerous disorders including diabetic ulcers and osteoradionecrosis. Several animal studies have demonstrated improvement in composite graft survival with use of HBO therapy6-9; however, little clinical data support its use compared to other treatment modalities.13 The several proposed mechanisms by which HBO therapy enhances graft survival include decreasing hypoxia; inhibiting ischemia-reperfusion injury; enhancing collagen and fibroblast function; decreasing neutrophil adhesion; and increasing nitric oxide production, cell stability, and angiogenesis.14,15 Baynosa and Zamboni reported that early treatment with HBO therapy at the initial sign of graft compromise maximized tissue viability and graft salvage.14

Our case involved a multilayered defect affecting multiple subunits of the nose. The amputated tissue sustained minimal crush injury and was kept on ice, with an ischemia time of approximately 5 hours. We demonstrated successful replantation of a multilayered free-tissue composite graft in a notoriously problematic area of the nose in a pediatric patient. We feel that in this case, HBO therapy enhanced the graft survivability and eliminated the need for a major revision procedure.

CONCLUSION

Nasal tip amputation is a rare encounter; however, surgical repair often results in suboptimal outcomes. Replantation offers improved outcomes compared to local flaps, but partial graft loss requiring revision surgery is common. Microvascular repair of a nasal tip amputation requires a highly trained microvascular surgeon because of the caliber of potential vessels to anastomose. In our experience, nonmicrovascular nasal tip replantation of a 2.5-cm, 3-layer graft followed by 2 weeks of HBO therapy resulted in a successful functional outcome with preservation of the majority of the native nasal tissue. Further studies are necessary to understand its true benefit, but we feel that HBO therapy can be used after nasal tip replantation to improve graft survival and potentially decrease the need for revision surgery.

This article meets the Accreditation Council for Graduate Medical Education and the American Board of Medical Specialties Maintenance of Certification competencies for Patient Care and Medical Knowledge.

ACKNOWLEDGMENTS

The authors have no financial or proprietary interest in the subject matter of this article.

  • © Academic Division of Ochsner Clinic Foundation

REFERENCES

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Pediatric Nasal Tip Amputation Successfully Treated with Nonmicrovascular Replantation and Hyperbaric Oxygen Therapy
Jason D. Pou, H. Devon Graham
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Pediatric Nasal Tip Amputation Successfully Treated with Nonmicrovascular Replantation and Hyperbaric Oxygen Therapy
Jason D. Pou, H. Devon Graham
Ochsner Journal Jun 2017, 17 (2) 204-207;
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Keywords

  • Amputation–traumatic
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  • nose deformities–acquired
  • otorhinolaryngologic surgical procedures
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