Articles: sutures.
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Expanded polytetrafluoroethylene sutures have been used for the replacement of chordae tendineae of the mitral valve since 1985 at The Toronto Hospital. This study examines the long term results of mitral valve repair with chordal replacement with this material. ⋯ Expanded polytetrafluoroethylene sutures are excellent for chordal replacement during mitral valve repair and do not fail during the first decade following surgery. This material has allowed us to increase the probability of successful mitral valve repair in patients with degenerative disease of the mitral valve and prolapse of both leaflets.
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Randomized Controlled Trial Comparative Study Clinical Trial
Comparison trial of four injectable anesthetics for laceration repair.
To compare four injectable anesthetics (buffered 1% lidocaine, buffered 1% lidocaine with epinephrine, plain 1% lidocaine with epinephrine, and 0.5% diphenhydramine with epinephrine) for pain of infiltration and effectiveness of anesthesia during suturing of minor lacerations. ⋯ Buffered lidocaine with epinephrine and lidocaine with epinephrine were more effective anesthetics during suturing, according to both the physicians and the patients. There was a tendency toward less pain with infiltration in buffered solutions, compared with plain lidocaine with epinephrine, but the comparisons did not reach statistical significance. Diphenhydramine with epinephrine was more painful to inject than were buffered lidocaine with epinephrine and lidocaine with epinephrine, and was less effective anesthetically than the other three solutions.
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Expanded polytetrafluoroethylene (ePTFE) suture has been used clinically for replacement of ruptured mitral valve chordae tendineae. The purpose of this study was to assess mitral valve function after posterior chordal replacement with ePTFE suture. ⋯ This integrated mitral valve finite element model provides a tool to investigate the performance of the valve system. In this study, we have shown that 2-0 ePTFE suture replacement of ruptured posterior chordae tendineae returns the valve to a near normal state, in terms of leaflet stress and coaptation, and chordal stresses.
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Bennett and Xie (1988) described an experimental peripheral neuropathy that is produced by loosely ligating a rat's left sciatic nerve with chromic gut suture. Four ligations, which are tied tightly enough to constrict the nerve and retard epineurial blood flow, produce a chronic constriction injury (CCI). Maves et al. (1993) reported that if the ligations are tied more loosely (i.e., no retardation of blood flow) than those that produce the CCI, rats exhibit postural changes only when the ligations are of chromic gut. ⋯ Though these different suture materials produced similar degrees of nerve constriction, the effects on paw position were greater with chromic gut suture. These results suggest that chromic gut suture, when used to produce the CCI, may have more than just a constrictive effect on the sciatic nerve. However, since all suture materials produced changes in paw position, constriction is likely to play an important role in the development of abnormalities in paw position observed in rats with the CCI.
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The Journal of pediatrics · Jun 1995
Comparative StudyEconomic comparison of a tissue adhesive and suturing in the repair of pediatric facial lacerations.
To determine, from the societal perspective, the most cost efficient of the three methods commonly used to repair pediatric facial lacerations: nondissolving sutures, dissolving sutures, or a tissue adhesive (Histoacryl blue). ⋯ Tissue adhesive is the preferred method of closure of pediatric facial lacerations because it results in the most efficient use of resources and is preferred by the majority of parents.