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正确地判断出血量对指导医生及时采取正确的抢救措施至关重要。通常可采用下列方法判断失血量的多少。一、出血方式一般说来,粪便潜血试验阳性时,提示24小时出血量达5ml 以上;失血量在60ml 以上时即可出现黑粪;如粪便呈咖啡色时,失血量已达100ml 左右;胃内积血量达到250～300ml 时才出现咖啡样呕吐物。根据呕吐物与黑粪多少,只能粗略估计失血量大小,这是因为呕吐物中除含血液外,尚混有其他胃内容物;粪便与血液混在一起。呕血与黑粪的多少还与出血部位,出血速度及出血量等因素有关。如贲门以上的病变,即使出血较少亦可出现呕血。当肠蠕动缓慢
Correctly determine the amount of bleeding to guide the doctor to take timely and proper rescue measures is essential. The following methods can usually be used to determine the amount of blood loss. First, the bleeding mode In general, when the fecal occult blood test was positive, suggesting that 24 hours bleeding amounted to 5ml above; blood loss of 60ml or more when you can appear black droppings; brown when the stool was brown, the blood loss has reached 100ml; stomach When the amount of blood reached 250 ~ 300ml coffee-like vomit. Depending on how much vomit and black droppings, only a rough estimate of the amount of blood loss, this is because vomit, in addition to blood, mixed with other stomach contents; mixed with blood stool. Hematemesis and the number of black manure and bleeding sites, bleeding speed and bleeding and other factors. Such as the lesions above the cardia, even if bleeding may occur vomiting less. When the peristalsis slowly