A new porcine skull base model: fibrin glue improves strength of cerebrospinal fluid leak repairs. 2009

John R de Almeida, and Kemel Ghotme, and Iona Leong, and James Drake, and Adrian L James, and Ian J Witterick
Department of Otolaryngology-Head and Neck Surgery, Mount Sinai Hospital, Toronto, Ontario, Canada. john.dealmeida@utoronto.ca

OBJECTIVE Fibrin glue is used in addition to grafts and flaps to repair cerebrospinal (CSF) leaks. We designed a porcine model to test the hypothesis that fibrin glue increases biomechanical strength. METHODS A randomized experimental animal study. METHODS Ten pigs underwent craniotomy with creation of a fistula through the cribriform plate into the nasal cavity. CSF leaks were endoscopically confirmed and repaired using pericranial grafts. The animals were randomized into a fibrin glue group (n=5) and a control group (n=5). Seven days later, endoscopic examination assessed for CSF leaks. The skull bases were harvested and examined for the degree of graft adherence (graded I-V) and subjected to burst pressure testing and histopathological analysis. RESULTS Eight animals survived, four in each group. There were no CSF leaks in the fibrin glue group and one in the control group. The fibrin glue group showed greater graft adherence (P=0.029) and higher burst pressures (13.8+/-5.4 vs 4.6+/-3.1 psi, P=0.021). Histopathological analysis revealed no difference in inflammation and bone remodeling. CONCLUSIONS The porcine model is a good model for anterior skull base defects. The model confirmed that fibrin glue reduces the rate of CSF leak by improving graft adherence and strength of repair.

UI MeSH Term Description Entries
D007828 Laryngoscopy Examination, therapy or surgery of the interior of the larynx performed with a specially designed endoscope. Laryngoscopic Surgical Procedures,Surgical Procedures, Laryngoscopic,Laryngoscopic Surgery,Surgery, Laryngoscopic,Laryngoscopic Surgeries,Laryngoscopic Surgical Procedure,Laryngoscopies,Procedure, Laryngoscopic Surgical,Procedures, Laryngoscopic Surgical,Surgeries, Laryngoscopic,Surgical Procedure, Laryngoscopic
D011897 Random Allocation A process involving chance used in therapeutic trials or other research endeavor for allocating experimental subjects, human or animal, between treatment and control groups, or among treatment groups. It may also apply to experiments on inanimate objects. Randomization,Allocation, Random
D002559 Cerebrospinal Fluid Rhinorrhea Discharge of cerebrospinal fluid through the nose. Common etiologies include trauma, neoplasms, and prior surgery, although the condition may occur spontaneously. (Otolaryngol Head Neck Surg 1997 Apr;116(4):442-9) Cerebrospinal Rhinorrhea,CSF Rhinorrhea,Cerebrospinal Fluid Rhinorrhea, Post-Traumatic,Cerebrospinal Fluid Rhinorrhea, Spontaneous,Cerebrospinal Fluid Rhinorrhea, Traumatic,Post-Traumatic Cerebrospinal Fluid Rhinorrhea,Post-Traumatic Rhinorrhea, Cerebrospinal Fluid,Rhinorrhea, Cerebrospinal Fluid, Post-Traumatic,Rhinorrhea, Cerebrospinal Fluid, Spontaneous,Rhinorrhea, Cerebrospinal Fluid, Traumatic,Rhinorrhea, Post-Traumatic, Cerebrospinal Fluid,Rhinorrhea, Spontaneous Cerebrospinal Fluid,Rhinorrhea, Traumatic Cerebrospinal Fluid,Spontaneous Cerebrospinal Fluid Rhinorrhea,Spontaneous Rhinorrhea, Cerebrospinal Fluid,Traumatic Cerebrospinal Fluid Rhinorrhea,Traumatic Rhinorrhea, Cerebrospinal Fluid,CSF Rhinorrheas,Cerebrospinal Fluid Rhinorrhea, Post Traumatic,Cerebrospinal Fluid Rhinorrheas,Cerebrospinal Rhinorrheas,Post Traumatic Cerebrospinal Fluid Rhinorrhea,Post Traumatic Rhinorrhea, Cerebrospinal Fluid,Rhinorrhea, CSF,Rhinorrhea, Cerebrospinal,Rhinorrhea, Cerebrospinal Fluid,Rhinorrheas, CSF,Rhinorrheas, Cerebrospinal,Rhinorrheas, Cerebrospinal Fluid
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013524 Surgical Flaps Tongues of skin and subcutaneous tissue, sometimes including muscle, cut away from the underlying parts but often still attached at one end. They retain their own microvasculature which is also transferred to the new site. They are often used in plastic surgery for filling a defect in a neighboring region. Island Flap,Island Flaps,Flap, Surgical,Flaps, Surgical,Pedicled Flap,Surgical Flap,Flap, Island,Flap, Pedicled,Flaps, Island,Flaps, Pedicled,Pedicled Flaps
D013552 Swine Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA). Phacochoerus,Pigs,Suidae,Warthogs,Wart Hogs,Hog, Wart,Hogs, Wart,Wart Hog
D015718 Fibrin Tissue Adhesive An autologous or commercial tissue adhesive containing FIBRINOGEN and THROMBIN. The commercial product is a two component system from human plasma that contains more than fibrinogen and thrombin. The first component contains highly concentrated fibrinogen, FACTOR VIII, fibronectin, and traces of other plasma proteins. The second component contains thrombin, calcium chloride, and antifibrinolytic agents such as APROTININ. Mixing of the two components promotes BLOOD CLOTTING and the formation and cross-linking of fibrin. The tissue adhesive is used for tissue sealing, HEMOSTASIS, and WOUND HEALING. Autologous Fibrin Tissue Adhesive,Fibrin Adhesive,Fibrin Glue,Fibrin Sealant System,Fibrinogen Adhesive,Beriplast,Crosseal,Fibrin Klebe System Immuno,Fibrin Seal,Fibrin Sealant,Fibrin Sealant, Human,Tisseel,Tissel,Tissucol,Transglutine,Adhesive, Fibrin,Adhesive, Fibrin Tissue,Adhesive, Fibrinogen,Glue, Fibrin,Human Fibrin Sealant,Seal, Fibrin,Sealant System, Fibrin,Sealant, Fibrin,Sealant, Human Fibrin,Tissue Adhesive, Fibrin
D016896 Treatment Outcome Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series. Rehabilitation Outcome,Treatment Effectiveness,Clinical Effectiveness,Clinical Efficacy,Patient-Relevant Outcome,Treatment Efficacy,Effectiveness, Clinical,Effectiveness, Treatment,Efficacy, Clinical,Efficacy, Treatment,Outcome, Patient-Relevant,Outcome, Rehabilitation,Outcome, Treatment,Outcomes, Patient-Relevant,Patient Relevant Outcome,Patient-Relevant Outcomes
D019291 Skull Base The inferior region of the skull consisting of an internal (cerebral), and an external (basilar) surface. Basicranium,Cranial Base,Base of Skull,Basis cranii,Base, Cranial,Base, Skull

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