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Ann Thorac Surg 1999;67:212-216
© 1999 The Society of Thoracic Surgeons
a Department of Surgery, Saiseikai Central Hospital, Tokyo, Japan
b Department of Pathology, Saiseikai Central Hospital, Tokyo, Japan
Accepted for publication June 19, 1998.
Address reprint requests to Dr Nomori, Department of Surgery, Saiseikai Central Hospital, 1-4-17 Mita, Minato-ku, Tokyo 108-0073, Japan
Background. Intraoperative pulmonary air leakage is one of the most troublesome complications in video-assisted thoracoscopic surgical procedures. We developed a sealing procedure using gelatin-resorcinol–formaldehyde-glutaraldehyde (GRFG) glue for pulmonary air leaks during such operations.
Methods. Formaldehyde-glutaraldehyde (FG) jelly is prepared by mixing FG fluid with 2.5% sodium carboxymethyl cellulose to make the FG fluid viscous. We performed an adhesion-strength test to determine the optimum ratio of gelatin-resorcinol mixture to FG jelly and then conducted an air leakage test on swine lung to compare the sealing effect between fibrin and GRFG glues. To study the histotoxicity of the GRFG glue, the sealant was applied to injured rabbit lung, and the rabbits were followed for 1 day to 188 days. For clinical studies, we developed an endosyringe to apply the GRFG glue on the target site during video-assisted thoracoscopic surgical procedures and used this technique in 21 patients with intraoperative air leaks. In addition, the side effects of GRFG glue application were studied in 52 patients in whom glue was used in several ways during lung operations.
Results. The results of the adhesion-strength test favored a 2:1 gelatin-resorcinol to FG ratio. The mean pressure required to produce air leakage was significantly higher with GRFG glue than with fibrin glue (p < 0.001). No critical histologic damage was seen in the rabbit lung, and the glue persisted on the lung surface for 188 days after sealing. Clinical application of the glue in 21 patients resulted in complete stoppage of air leakage during operation and long afterward, except in 1 patient with a late-onset lung fistula. The FG jelly helped prevent glue spillage at the target site, regardless of angle. A transient rise in temperature up to 38.6°C was observed as a side effect 7 days after operation in 5 (9.6%) of the 52 patients.
Conclusions. A GRFG glue using FG jelly seals pulmonary air leaks effectively, simply, and safely during video-assisted thoracoscopic surgical procedures.
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