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Endoscopic approach to gastric remnant outlet obstruction after gastric bypass:A case report
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作者 Arash Zarrin Sufian Sorathia +2 位作者 Vivek Choksi Steven Robert Kaplan Franklin Kasmin 《World Journal of Gastrointestinal Endoscopy》 CAS 2020年第9期297-303,共7页
BACKGROUND Acute gastric remnant bleeding is a rare complication of bariatric surgery.Furthermore,acute bleeding from the gastric remnant resulting in gastric remnant outlet obstruction has not been described previous... BACKGROUND Acute gastric remnant bleeding is a rare complication of bariatric surgery.Furthermore,acute bleeding from the gastric remnant resulting in gastric remnant outlet obstruction has not been described previously.Endoscopic management of gastric remnant bleed has been challenging due to difficulty accessing the excluded stomach.Traditionally,this necessitates surgical intervention.Recently,however,the adoption of endoscopic ultrasound-directed transgastric intervention provides an alternative approach to management.CASE SUMMARY A 65-year-old male with a prior gastric bypass presented with the sudden onset of progressive abdominal distension,nausea,and melena of two days duration.His imaging illustrated a massively distended stomach.A nasogastric tube did not result in drainage of fluid or decompression of his abdomen.His endoscopy revealed a normal-appearing gastro-jejunal anastomosis and confirmed the distended"fluid"-filled gastric remnant.An endoscopic ultrasound-directed gastrogastrostomy was created to decompress the gastric remnant.Two liters of blood was suctioned before a large adherent clot was visualized in the gastric antrum.The patient underwent emergent angiography with embolization of the gastroduodenal artery.He was discharged with a stable hemoglobin level and resolution of symptoms.Healing superficial gastric ulcers were visualized on a follow-up endoscopy.Gastric biopsies were consistent with Helicobacter pylori infection for which the patient was treated,and successful eradication was achieved.CONCLUSION This patient benefited from a timely diagnosis and effective therapy of an acute gastric remnant obstruction from a bleeding ulcer with endoscopic ultrasound directed transgastric intervention. 展开更多
关键词 Gastrointestinal bleeding Gastric outlet obstruction Gastric remnant Endoscopic ultrasound directed transgastric intervention Gastrogastrostomy Case report
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胎儿脐血流检测电路的研究
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作者 许俊烽 陆尧胜 《医疗卫生装备》 CAS 2014年第2期4-7,共4页
目的:针对目前胎儿脐血流监护仪的灵敏度与方向性的不足,设计一种新型的胎儿脐血流检测电路。方法:基于超声多普勒血流测量的理论模型,通过比较不同检测电路的特点,提出并实现由有源晶振超声发射电路和谐振放大同步解调接收电路组成的... 目的:针对目前胎儿脐血流监护仪的灵敏度与方向性的不足,设计一种新型的胎儿脐血流检测电路。方法:基于超声多普勒血流测量的理论模型,通过比较不同检测电路的特点,提出并实现由有源晶振超声发射电路和谐振放大同步解调接收电路组成的脐血流检测电路的方案。结果:使用血流动力学模拟实验装置进行检测,能正确地显示脐血流方向的声谱图,不存在反向的血流假象。结论:该脐血流检测电路灵敏度高,提取脐血流方向的性能显著提高,为医生评估胎儿状态提供了良好的参考指标。 展开更多
关键词 超声多普勒 脐血流检测 解调 灵敏度 方向性
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