Sorry ,it is not possible even theoretically to transfuse patient with o+ve blood group by A+ ve,
And if that blunder happens by ignorance ,
The patient will have severe allergic reaction within minute
1. Rashes
2.breathing difficulty
3.low blood pressure
5.fever and chills
4. Even death if proper treatment was not given immediately
Next Steps
if u get to see any reactions ,
stop blood transfusion immediately
call for help ,either the sister or doctor
Health Tips
this would never happen ,
hope this question is just a doubt...
and o+ve blood will be available in all blood banks it's not rare blood group..