Abstract
Hemorrhage from the posterior superior part of the nasal cavity is sometimes so severe that it ends fatally. It is especially severe in patients with high blood pressure and arterial hemorrhage from the posterior lateral nasal artery, which sometimes cannot be reached and ligated directly on the bleeding spot. Some cases have been reported in which the bleeding could be checked only by ligature of the external carotid artery or by ligation of the internal maxillary artery near its branching off from the external carotid artery. However, the retrograde circulation makes the result of such ligation uncertain because of the numerous anastomoses. In 1929 Seiffert<sup>1</sup>worked out what he stated is the method of choice, after having repeatedly used it on living patients. In this procedure the maxillary sinus is opened from the oral cavity, just as in the Caldwell-Luc operation. Through a large opening of the
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