Compare conditions

Put any two — or three — conditions side by side, adult or pediatric, to spot the look-alike differences fast, row by row.

Hemolytic Anemia

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In one line

·Red blood cells are dying too fast — look for high LDH, low haptoglobin, high indirect bilirubin, and lots of young red cells (reticulocytes) trying to replace them.

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Normal physiology

·Red blood cells are made in your bone marrow, live about 120 days in your bloodstream carrying oxygen, and then are quietly removed by your spleen and recycled.

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What goes wrong

·Red blood cells are dying way too early — sometimes in days instead of months. Something is either attacking them, smashing them, or they were built fragile from the start.

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Hallmark signs

·Pale skin and nail beds
·Feeling very tired and weak
·Yellow color to the skin or whites of the eyes (jaundice)
·Dark or tea-colored urine
·Fast heartbeat (tachycardia)
·Enlarged spleen (splenomegaly)
·Shortness of breath, especially with activity
·Chest pain or confusion (in severe cases)

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Red flags · escalate now

·Sudden, severe chest pain or trouble breathing—may mean the heart or lungs are in danger from too little oxygen
·Confusion, slurred speech, or fainting—signs the brain isn't getting enough oxygen
·Very dark or cola-colored urine with fever and back pain—may signal acute, life-threatening red blood cell destruction (hemolysis) or kidney damage
·Fast, pounding heartbeat that won't slow down, or new heart-failure symptoms (swollen legs, fluid in the lungs)—the heart is struggling to keep up

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Workup

·Reticulocyte count
·Lactate dehydrogenase (LDH)
·Haptoglobin
·Indirect (unconjugated) bilirubin
·Peripheral blood smear
·Direct antiglobulin test (DAT or Coombs test)
·Urinalysis for hemoglobin and hemosiderin
·Complete blood count (CBC) with hemoglobin and mean corpuscular volume (MCV)

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Treatment

·Identify the cause: use DAT (Coombs test), blood smear, LDH, haptoglobin, and reticulocyte count to find whether red blood cell destruction (hemolysis) is immune, mechanical, or from an inherited red blood cell defect
·Warm autoimmune destroying red blood cells (hemolytic) anemia (AIHA): start corticosteroids (prednisone 1 mg/kg/day); Cold AIHA: avoid cold exposure and give rituximab (375 mg/m² weekly for 4 weeks); Drug-induced: stop the offending drug immediately
·Thrombotic thrombocytopenic purple bleeding blotches (purpura) (TTP): urgent plasma exchange (plasmapheresis) daily until platelets normalize; Atypical destroying red blood cells (hemolytic) uremic syndrome (HUS): eculizumab (complement C5 blocker, 900 mg IV weekly); Disseminated intravascular coagulation (DIC): treat the underlying trigger (infection, cancer, trauma); Paroxysmal nocturnal hemoglobinuria (PNH): eculizumab
·G6PD deficiency: avoid oxidative triggers (sulfa drugs, nitrofurantoin, dapsone, fava beans, naphthalene mothballs); Sickle cell disease: hydroxyurea (15–35 mg/kg/day) to increase fetal hemoglobin; Thalassemia: regular red blood cell transfusions and iron chelation (deferasirox or deferoxamine)
·Transfuse packed red blood cells if hemoglobin drops below 7 g/dL or if the patient has chest pain, shortness of breath, confusion, or rapid heart rate despite higher hemoglobin; use crossmatch-compatible units
·Folic acid supplementation (1 mg daily) in chronic destroying red blood cells (hemolytic) anemia
·Monitor reticulocyte count, LDH, haptoglobin, indirect bilirubin, and hemoglobin weekly to track whether red blood cell destruction (hemolysis) is slowing

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NCLEX trap

·In warm AIHA, the patient's immune system attacks their own red blood cells. Any donor blood you give will be attacked just as fast. First, give steroids (usually prednisone or methylprednisolone) to quiet the immune attack. Only transfuse if the patient is about to collapse from not enough oxygen delivery (signs: chest pain, severe shortness of breath, altered mental status, unstable vital signs). Treat the upstream cause—the immune attack—not just the number on the lab report.
·Destroying red blood cells (Hemolytic) anemia means red blood cells are dying too fast, but WHY they are dying splits into three big groups: immune (warm or cold AIHA, drug-induced), mechanical (heart valves shredding cells, microangiopathic destroying red blood cells anemia like TTP or HUS, DIC), or intrinsic defects (G6PD deficiency, sickle cell disease, thalassemia, paroxysmal nocturnal hemoglobinuria). Find which group or the treatment will fail.
·TTP (thrombotic thrombocytopenic purple bleeding blotches (purpura)) is a medical emergency where tiny clots form everywhere, shredding red blood cells and using up platelets. The classic five signs are low platelets, destroying red blood cells (hemolytic) anemia with broken red blood cells (schistocytes on smear), fever, confusion or other brain symptoms, and kidney damage. Even if you only see three, think TTP. Start plasma exchange (plasmapheresis) immediately—it saves lives. Steroids alone or waiting for more tests wastes time and kills people.
·A patient whose hemoglobin drops from 13 to 8 in 24 hours is in much more danger than a patient with hemoglobin 8 that has been stable for months. In destroying red blood cells (hemolytic) anemia, speed matters. Look at the rate of drop, heart rate (is the heart racing to compensate?), respiratory rate, and whether the patient can stand without getting dizzy. Fast red blood cell destruction (hemolysis) means the body has no time to adjust—shock and organ damage are around the corner.
·Yellowing of the skin and eyes (Jaundice) (yellow skin) plus anemia could be destroying red blood cells (hemolytic) anemia, liver disease making anemia worse, or both happening at once. Check indirect bilirubin (the breakdown product of hemoglobin), LDH (lactate dehydrogenase, released when cells break), haptoglobin (a cleanup protein that drops when red blood cells break), and reticulocyte count (young red blood cells the marrow makes to replace the lost ones). High indirect bilirubin + high LDH + low haptoglobin + high reticulocyte count = destroying red blood cells anemia. The pattern points to the cause.
·Cold agglutinin disease (cold AIHA) happens when antibodies stick to red blood cells in the cold and destroy them. Ask: Do your symptoms get worse in winter, after being outside in the cold, or after drinking something icy? Keep the patient warm—literally, warm the room and blankets. Rituximab (a drug that lowers the antibodies) works better than steroids. The upstream cause (cold antibodies) changes the whole treatment plan.

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