TY - JOUR
T1 - Toward Optimal Tissue Sealants for Neurosurgery
T2 - Use of a Novel Hydrogel Sealant in a Canine Durotomy Repair Model
AU - Preul, Mark C.
AU - Bichard, William D.
AU - Muench, Timothy R.
AU - Spetzler, Robert F.
AU - Bruce, Jeffrey N.
AU - Grossman, Robert G.
AU - Sekhar, Laligam N.
AU - Stimac, Dinko
AU - Wang, Michael Y.
AU - Heilman, Carl B.
PY - 2003/1/1
Y1 - 2003/1/1
N2 - OBJECTIVE: Watertight dural repairs are difficult to achieve, and cerebrospinal fluid leakage causes complications and extends hospital stays. Therefore, a novel synthetic hydrogel film was evaluated as an adjunct to dural closure in a canine model. METHODS: The self-polymerizing, absorbable, and biocompatible hydrogel was sprayed onto tissue and formed a flexible, adherent sealant. A 2-cm incision of cranial dura and arachnoid was created in 26 adult dogs and loosely repaired. Hydrogel was applied over the 2-mm dural gap in 13 dogs; 13 control dogs received no hydrogel application. RESULTS: All dogs remained neurologically intact. Valsalva tests conducted at 1, 4, 7, and 56 days were associated with mean leakage pressures (± standard error of the mean) of 5 ± 0, 5 ± 0, 7 ± 2, and 13 ± 8 cm H2O in the controls and of 53 ± 2, 37 ± 11, 42 ± 6, and 48 ± 4 in the treated animals (P = 0.001, 0.053, 0.010, 0.035, respectively, at each time point; one-tailed t test). Histopathological analysis revealed minimal changes. CONCLUSION: The hydrogel-treated animals exhibited normal progression of dural healing, no dural adhesions, and no underlying effects on the brain. Although dural healing progressed normally, the control animals displayed marked peridural adhesions. The results of this in vivo study suggest that hydrogels, such as that used here, may significantly decrease cerebrospinal fluid leakage, thereby increasing the safety and effectiveness of dural closure in patients and facilitating surgical reexploration.
AB - OBJECTIVE: Watertight dural repairs are difficult to achieve, and cerebrospinal fluid leakage causes complications and extends hospital stays. Therefore, a novel synthetic hydrogel film was evaluated as an adjunct to dural closure in a canine model. METHODS: The self-polymerizing, absorbable, and biocompatible hydrogel was sprayed onto tissue and formed a flexible, adherent sealant. A 2-cm incision of cranial dura and arachnoid was created in 26 adult dogs and loosely repaired. Hydrogel was applied over the 2-mm dural gap in 13 dogs; 13 control dogs received no hydrogel application. RESULTS: All dogs remained neurologically intact. Valsalva tests conducted at 1, 4, 7, and 56 days were associated with mean leakage pressures (± standard error of the mean) of 5 ± 0, 5 ± 0, 7 ± 2, and 13 ± 8 cm H2O in the controls and of 53 ± 2, 37 ± 11, 42 ± 6, and 48 ± 4 in the treated animals (P = 0.001, 0.053, 0.010, 0.035, respectively, at each time point; one-tailed t test). Histopathological analysis revealed minimal changes. CONCLUSION: The hydrogel-treated animals exhibited normal progression of dural healing, no dural adhesions, and no underlying effects on the brain. Although dural healing progressed normally, the control animals displayed marked peridural adhesions. The results of this in vivo study suggest that hydrogels, such as that used here, may significantly decrease cerebrospinal fluid leakage, thereby increasing the safety and effectiveness of dural closure in patients and facilitating surgical reexploration.
KW - Cerebrospinal fluid leak
KW - Dural repair
KW - Dural seafant
KW - Hydrogel
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U2 - 10.1227/01.NEU.0000089481.87226.F7
DO - 10.1227/01.NEU.0000089481.87226.F7
M3 - Article
C2 - 14580287
AN - SCOPUS:10744225432
VL - 53
SP - 1189
EP - 1199
JO - Neurosurgery.
JF - Neurosurgery.
SN - 0148-396X
IS - 5
ER -