If 7.7g of blood from the digestive tract is equal to 7.7ml of blood, the amount of bleeding is relatively small and usually does not require blood transfusion. If the hemoglobin is taken into account, 7.7g of hemoglobin is about 1,500ml of blood, and a larger amount of bleeding will require blood transfusion.
If the amount of bleeding in the digestive tract is 7.7ml, the amount of bleeding is relatively small, usually there will not be vomiting blood and black stools, but only in the detection of fecal occult blood test appears positive indicators. This condition is usually seen in peptic ulcers, and blood transfusion is usually not needed.
If the bleeding volume is around 1500ml, the bleeding volume is relatively large, and there are usually symptoms of vomiting blood and black stools, and systemic shock symptoms, such as dizziness, palpitations, fatigue, fainting, etc., may also occur. Blood transfusion is required in this case, otherwise it may lead to life-threatening conditions such as decreased blood pressure and shock, and endoscopic or surgical hemostasis should be performed immediately.
Other indicators include changes in blood pressure and heart rate, and you cannot rely solely on blood counts to determine the need for blood transfusion. If there is bleeding in the digestive tract, it is recommended to go to the hospital as soon as possible and give relevant measures with the help of doctors.