What are the symptoms from mixing two blood types inside body?

When two incompatible blood types are mixed, it can lead to a condition called a transfusion reaction or hemolytic transfusion reaction. Here are some symptoms that may occur:

1. Fever: A rapid rise in body temperature often occurs within 15-30 minutes after the incompatible blood has been transfused.

2. Chills and Rigors: The person may experience shivering and intense shaking.

3. Back Pain: Severe lower back pain can be a symptom of a transfusion reaction.

4. Difficulty Breathing: Shortness of breath or respiratory distress may occur as a result of fluid in the lungs.

5. Rapid Heart Rate (Tachycardia): The heart rate may increase significantly.

6. Hypotension or Low Blood Pressure: A significant drop in blood pressure can occur.

7. Confusion or Altered Mental Status: The person may become confused or disoriented.

8. Nausea and Vomiting: Upset stomach, nausea, and vomiting may be present.

9. Pain at the Infusion Site: There may be pain or discomfort at the site where the blood transfusion is being administered.

10. Dark Urine: In severe cases, the urine may appear dark red or brown due to the presence of red blood cell breakdown products (hemoglobin).

11. Jaundice: Yellowing of the skin or eyes (jaundice) may indicate significant red blood cell destruction.

12. Hemoglobinuria: This is the presence of hemoglobin in the urine, which can give the urine a red or brown color.

13. Kidney Failure: In severe cases, the incompatible blood transfusion can lead to kidney damage and even kidney failure.

Transfusion reactions, especially severe ones, are medical emergencies and require immediate medical attention. Therefore, careful blood typing and compatibility testing are essential before any blood transfusion to prevent these reactions.