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Tareq Abadl: What Happens If You Transfuse the Wrong Blood Group?
Dr. Tareq Abadl/LinkedIn
Jun 14, 2026, 19:54

Tareq Abadl: What Happens If You Transfuse the Wrong Blood Group?

Tareq Abadl, Medical Lab Specialist, shared a post on LinkedIn:

“What Happens If You Transfuse the Wrong Blood Group?

Imagine a patient urgently needs blood.

The transfusion starts, but the blood unit is incompatible with the patient’s blood group.

What happens next?

The patient’s immune system immediately recognizes the donor red blood cells as foreign.

Naturally occurring antibodies bind to the incompatible cells and trigger their destruction inside the bloodstream.

This can result in an Acute Hemolytic Transfusion Reaction (AHTR) — one of the most serious complications in transfusion medicine.

Signs and symptoms may include:

  • Fever and chills
  • Severe back or chest pain
  • Shortness of breath
  • Dark or red-colored urine
  • Low blood pressure
  • Acute kidney injury

In severe cases, the reaction can progress to shock, disseminated intravascular coagulation (DIC), multiple organ failure, and even death.

This is why blood bank professionals never rely on blood group labels alone.

Before a blood unit reaches a patient, several critical steps are performed:

  • ABO and Rh typing
  • Antibody screening
  • Crossmatching
  • Strict patient identification procedures.”

Tareq Abadl

Other posts featuring Tareq Abadl on Hemostasis Today.

Acute Hemolytic Transfusion Reaction AHTR DIC Disseminated Intravascular Coagulation Health Hematology Hemostasis Hemostasis News Hemostasis Today Medicine Tareq Abadl
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