Résumé
Il reste beaucoup à apprendre au sujet de la physiologie des varices œsophagiennes. L’histoire naturelle du saigncment sur varices n’est pas mieux définie, et on ne dispose d’aucun facteur clinique ou biochimique prédictif d’un saignement variqueux chez les patients sans hémorragie antérieure. Bien que certains signes endoscopiques, tels que les indices de coloration rouge des varices, puissent avoir une valeur de prédiction du saignement, ces données sont encore trés restreintes.
Au cours des 7 à 8 dernières années, la littérature médicale a vu une hausse considérable des travaux consacrés à la sclérothérapie. Leurs informations manquent ďuniformité, quant aux différents aspects techniques de la sclérothérapie des varices; néanmoins les résultats obtenus par différentes approches semblent satisfaisants. L’indication de la sclérothérapie est franche chez les patients en décompensation hépatique et non opérables, mais la technique n’a pas été évaluée de façon spécifique chez les patients à pronostic favorable et susceptibles d’être soumis à une intervention chirurgicale. Chez les patients à haut risque, la sclérothérapie des varices a été comparée au shunt porto-cave en urgence, mais aucun essai comparatif n’a concerné la chirurgie chez les patients à pronostic favorable.
Les injections sclérosantes des varices œsophagiennes se sont avérées bénéfiques dans le contrôle du saignement. L’oblitération des veines variqueuses paraît en rapport direct avec cette réponse favorable. Certaines études rapportent une amélioration des taux de survie mais il faudrait disposer de plus de données pour permettre une réponse formelle.
La liste des complications de la sclérothérapie s’allonge. II n’est pas certain que les complications soient ou non liées à des facteurs techniques, tels le choix des agents sclérosants ou la méthode d’injection.
Summary
There is much to be learned about the pathophysiology of variceal hemorrhage. The natural course of variceal bleeding is now better defined, but there are no proved clinical or biochemical factors that predict variceal hemorrhage in patients without prior bleeding. Although certain endoscopic features, such as red color signs, may be of value in the prediction of bleeding, the data in support of this are limited at present.
There has been a remarkable increase in the literature on sclerotherapy over the past 7 to 8 years. There is no uniformity with respect to the technical aspects of variceal sclerotherapy; however, the results with many different approaches appear to be satisfactory. Sclerotherapy is clearly indicated for patients with poor liver function who are not candidates for sugery, but the procedure has not been evaluated specifically in good risk patients who might be candidates for surgery. Variceal sclerotherapy has been compared to emergency shunt surgery in poor risk patients, but there are no comparison trials with surgery in good risk patients.
Injection sclerosis of esophageal varices has been shown to be of benefit with regard to control of bleeding. Obliteration of varices appears to be related to a favorable response. There are some reports of improved survival as well, although more data on this point are required.
The list of sclerotherapy related complications is growing. It is not certain whether or not certain complications might be related to technical factors such as the choice of sclerosing agent(s) or the method of injection.
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Tirés à part: Dr Michael V. Sivak Jr., Cleveland Clinic, 9500 Euclid Avenue Cleveland, OH 44106 (U.S.A.).
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Sivak, M.V. La sclérothérapie des varices œsophagiennes: Etat de la question. Acta Endosc 15, 355–383 (1985). https://doi.org/10.1007/BF02966207
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DOI: https://doi.org/10.1007/BF02966207