Yin N T
Dental Department, Veterans General Hospital-Taichung, Taiwan, Republic of China.
J Oral Maxillofac Surg. 1994 Aug;52(8):849-54. doi: 10.1016/0278-2391(94)90236-4.
The effect of occlusion of the external carotid system on blood flow of the internal maxillary artery was investigated in 16 dogs.
The external carotid system was occluded by ligation or clamping at different levels separately or simultaneously and the blood flow of the internal maxillary artery was measured with an electromagnetic flowmeter before and after each occlusion.
The ligation of the external carotid artery below (low ligation) and above (high ligation) the origin of the occipital, lingual, and facial arteries reduced the blood flow by 61.1% and 71.5%, respectively. Low ligation together with ligation of the lingual artery reduced the blood flow by 73.5%. Multiple ligations (high and low ligations combined with ligations of the occipital, lingual, and facial arteries) reduced the blood flow by 81.8%. The internal maxillary artery was sectioned after the multiple ligations, and retrograde flow from the distal segment was studied. The flow was only a trace and could not be measured with the flowmeter. Total blood loss from both ends almost equaled the blood flow of the proximal segment, 18.2% of normal.
Multiple occlusion appears to be the most effective treatment for hemorrhage from the initial part of the internal maxillary artery.
在16只犬中研究颈外动脉系统闭塞对颌内动脉血流的影响。
分别或同时在不同水平通过结扎或夹闭闭塞颈外动脉系统，在每次闭塞前后用电磁流量计测量颌内动脉的血流。
在枕动脉、舌动脉和面动脉起点下方（低位结扎）和上方（高位结扎）结扎颈外动脉，血流分别减少61.1%和71.5%。低位结扎联合舌动脉结扎使血流减少73.5%。多次结扎（高位和低位结扎联合枕动脉、舌动脉和面动脉结扎）使血流减少81.8%。多次结扎后切断颌内动脉，研究远段的逆行血流。血流仅为微量，流量计无法测量。两端总失血量几乎等于近段血流，为正常的18.2%。
多次闭塞似乎是颌内动脉起始部出血最有效的治疗方法。
