Following initiation of blood transfusion, she experienced a sudden onset of rigorous chills, accompanied by elevated temperature, tachycardia, and hypertension.
[ncbi.nlm.nih.gov]
[…] clinical indicators are present: shock hypertensive (systolic rises > 30mm Hg) hypotensive (systolic falls > 30mm Hg) fever (2ºC or 3.5ºF rise in temperature) rigors
[slideshare.net]
Common signs of AHTR are: fever, chills/rigors, facial flushing, chest pain, abdominal pain, back/flank pain,nausea/vomiting,diarrhea, hypotension, pallor, jaundice, oligoanuria
[notifylibrary.org]